Palash DebnathandClaude Opus 4.8
87eb5ad078
* feat(dub): audio-only dubbing mode (#119) Add an audio→audio dubbing path: upload an audio file, get dubbed audio out, with no video processing. The transcribe → translate → TTS core is unchanged; only the video-coupled stages are skipped. Backend: - dub_core /dub/upload: new `input_type` form field ("video"|"audio"). Audio mode validates the upload is a known audio container (else 400) and threads input_type into the ingest source dict. - dub_pipeline ingest: for audio input, skip scene detection + thumbnail ffmpeg passes (still emits scene_done count=0 so the prep SSE contract the frontend waits on is unchanged); stores input_type on the job. - dub_export /dub/download: for audio jobs, branch to an audio-only export (_build_audio_export_cmd) — no video input/map/codec/subtitle pass. Outputs dubbed_audio_{lang}_{stamp}.{wav|m4a|mp3|flac} via `out_format` (default m4a), optionally mixed with the separated background. Unknown formats fall back to AAC. Frontend: - dubSlice: dubInputType state + setter (default 'video'). - DubTab: auto-select audio-only mode when an audio file is dropped/picked. - dub.ts/useDubWorkflow: pass input_type on upload. Tests (11): _build_audio_export_cmd format/mix matrix; end-to-end audio-only export produces an audio file (no video mux); unknown-format fallback; upload rejects a video extension in audio mode. Closes #119. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * harden(#119): allowlist-sanitize lang_code in audio export path The track id is already constrained to an existing track key, but allowlist-sanitize it before it reaches the output path (same pattern as the existing safe_name) so a path component can never carry separators — clears the CodeQL path-injection flag on the new audio-export branch. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * polish(#119): address Greptile P2s on audio-only dubbing - dub_pipeline: emit scene_start before scene_done(count=0) for audio so the prep SSE stage sequence is symmetric with the video path. - useDubWorkflow: 'Preparing audio…' pill for audio jobs (was always 'Preparing video…'). - DubTab: widen the drop-accept regex + file-input accept to the full supported audio set (aac/opus/wma) so it matches the input-type detection and the backend allowlist. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * fix(#119): drop unused dubInputType read in DubTab (CodeQL) Only setDubInputType is used; the value read was dead. Clears the CodeQL unused-variable alert. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
1011 lines
41 KiB
Python
1011 lines
41 KiB
Python
import os
|
||
import io
|
||
import time
|
||
import uuid
|
||
import asyncio
|
||
import logging
|
||
from typing import Optional
|
||
from fastapi import APIRouter, HTTPException, Query, Response
|
||
from fastapi.responses import FileResponse, StreamingResponse
|
||
|
||
from core.db import db_conn
|
||
from core.config import DUB_DIR
|
||
from core.tasks import task_manager
|
||
from api.routers.dub_core import _get_job
|
||
from services.ffmpeg_utils import find_ffmpeg, run_ffmpeg
|
||
|
||
router = APIRouter()
|
||
logger = logging.getLogger("omnivoice.api")
|
||
|
||
|
||
def _unique_stamp() -> str:
|
||
"""Return a short unique suffix like '20260415T142301-ab12cd34' for export files."""
|
||
return f"{time.strftime('%Y%m%dT%H%M%S')}-{uuid.uuid4().hex[:8]}"
|
||
|
||
|
||
def _native_save(source: str, destination: str, display_name: str, media_type: str):
|
||
"""Copy a generated export file to a user-chosen destination and return JSON."""
|
||
import shutil
|
||
dest = os.path.expanduser(destination)
|
||
# Reject traversal against the user's home dir — Tauri save dialog returns abs path.
|
||
if not os.path.isabs(dest):
|
||
raise HTTPException(status_code=400, detail="save_path must be absolute")
|
||
try:
|
||
os.makedirs(os.path.dirname(dest) or ".", exist_ok=True)
|
||
shutil.copy2(source, dest)
|
||
except PermissionError as e:
|
||
raise HTTPException(status_code=403, detail=f"Permission denied: {e}")
|
||
except OSError as e:
|
||
raise HTTPException(status_code=500, detail=f"Copy failed: {e}")
|
||
if not os.path.exists(dest) or os.path.getsize(dest) == 0:
|
||
raise HTTPException(status_code=500, detail="Copy produced empty file at destination")
|
||
logger.info("Native save wrote %s (%d bytes)", dest, os.path.getsize(dest))
|
||
return {
|
||
"saved": True,
|
||
"path": dest,
|
||
"size": os.path.getsize(dest),
|
||
"media_type": media_type,
|
||
"display_name": display_name,
|
||
}
|
||
|
||
@router.get("/tasks/stream/{task_id}")
|
||
async def stream_task(task_id: str, after_seq: int = 0):
|
||
"""Universal Server-Sent Event stream for background tasks.
|
||
|
||
`?after_seq=N` enables resumption: on reconnect, the client replays
|
||
persisted events with seq > N, then (if the job is still live) attaches
|
||
to the in-memory listener for live updates. After a server restart the
|
||
in-memory task is gone but the persisted tail + final `jobs.status` are
|
||
still readable, so a mid-stream reload still sees the final state.
|
||
"""
|
||
from core import job_store
|
||
job_row = job_store.get(task_id)
|
||
live = task_manager.active_tasks.get(task_id)
|
||
|
||
if not live and not job_row:
|
||
raise HTTPException(
|
||
status_code=404,
|
||
detail="No such task. It may have been cleaned up or was never created.",
|
||
)
|
||
|
||
async def _reader():
|
||
# 1) Replay any persisted events after the client's last-seen seq.
|
||
try:
|
||
persisted = job_store.events_since(task_id, after_seq=after_seq)
|
||
except Exception:
|
||
persisted = []
|
||
for evt in persisted:
|
||
yield evt["payload"]
|
||
|
||
# 2) If the job has finished (whether in-memory or persisted-only), done.
|
||
if not live:
|
||
return
|
||
if live["status"] in ("done", "failed", "cancelled"):
|
||
return
|
||
|
||
# 3) Attach to the in-memory listener for live updates.
|
||
q = asyncio.Queue()
|
||
await task_manager.add_listener(task_id, q)
|
||
try:
|
||
while True:
|
||
evt = await q.get()
|
||
if evt is None:
|
||
break
|
||
yield evt
|
||
finally:
|
||
await task_manager.remove_listener(task_id, q)
|
||
|
||
return StreamingResponse(_reader(), media_type="text/event-stream")
|
||
|
||
|
||
@router.get("/jobs")
|
||
async def list_jobs(status: str | None = None, project_id: str | None = None, limit: int = 100):
|
||
"""List persisted jobs, newest first.
|
||
|
||
`status=active` → running + pending (what the batch-queue UI wants).
|
||
`status=failed|done|cancelled|pending|running` → exact match.
|
||
`project_id=...` → scope to one project.
|
||
"""
|
||
from core import job_store
|
||
limit = max(1, min(500, int(limit)))
|
||
return job_store.list_jobs(status=status, project_id=project_id, limit=limit)
|
||
|
||
|
||
@router.get("/jobs/{job_id}")
|
||
async def get_job(job_id: str):
|
||
from core import job_store
|
||
row = job_store.get(job_id)
|
||
if not row:
|
||
raise HTTPException(
|
||
status_code=404,
|
||
detail="No such job. It may have been cleaned up or never created.",
|
||
)
|
||
return row
|
||
|
||
|
||
@router.get("/jobs/{job_id}/events")
|
||
async def list_job_events(job_id: str, after_seq: int = 0, limit: int = 500):
|
||
"""Persisted SSE tail. Strict ascending seq so the client can stitch
|
||
it onto a live feed (which starts above the last returned seq).
|
||
"""
|
||
from core import job_store
|
||
row = job_store.get(job_id)
|
||
if not row:
|
||
raise HTTPException(
|
||
status_code=404,
|
||
detail="No job with that id. It may have expired, been deleted, or the server restarted before it was persisted — check the dub history in the sidebar.",
|
||
)
|
||
limit = max(1, min(2000, int(limit)))
|
||
return {
|
||
"job": row,
|
||
"events": job_store.events_since(job_id, after_seq=after_seq, limit=limit),
|
||
}
|
||
|
||
|
||
@router.post("/tasks/cancel/{task_id}")
|
||
async def cancel_task(task_id: str):
|
||
"""Cancel a running background task (e.g. dub generation)."""
|
||
ok = task_manager.cancel_task(task_id)
|
||
if not ok:
|
||
raise HTTPException(status_code=404, detail="Task not found")
|
||
return {"cancelled": True, "task_id": task_id}
|
||
|
||
|
||
@router.get("/dub/tracks/{job_id}")
|
||
async def dub_list_tracks(job_id: str):
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
return {"tracks": job.get("dubbed_tracks", {})}
|
||
|
||
|
||
def _write_burn_srt(job: dict, exports_dir: str, stamp: str, dual: bool) -> str | None:
|
||
"""Build a temp SRT from job segments for use with ffmpeg's subtitles filter.
|
||
|
||
Returned path is already ffmpeg-filter-safe (plain ASCII basename under exports_dir).
|
||
Returns None if there are no segments to render.
|
||
"""
|
||
segments = job.get("segments", [])
|
||
if not segments:
|
||
return None
|
||
lines = []
|
||
for i, seg in enumerate(segments):
|
||
lines.append(str(i + 1))
|
||
lines.append(f"{_format_srt_time(seg['start'])} --> {_format_srt_time(seg['end'])}")
|
||
lines.append(_pick_subtitle_text(seg, dual))
|
||
lines.append("")
|
||
sub_path = os.path.join(exports_dir, f"burn_subs_{stamp}.srt")
|
||
with open(sub_path, "w", encoding="utf-8") as f:
|
||
f.write("\n".join(lines))
|
||
return sub_path
|
||
|
||
|
||
def _ffmpeg_filter_escape(path: str) -> str:
|
||
"""Escape a path for use inside an ffmpeg filter value (subtitles=...).
|
||
|
||
ffmpeg's filter parser treats `:` as an option separator and `\\`, `'` specially.
|
||
Backslashes first, then colons, then single quotes.
|
||
"""
|
||
return path.replace("\\", "\\\\").replace(":", "\\:").replace("'", "\\'")
|
||
|
||
|
||
def _build_video_stretch_filter_graph(
|
||
plan: list[dict], orig_dur: float, video_input_idx: int = 0,
|
||
in_label: str | None = None,
|
||
) -> tuple[str, str]:
|
||
"""Build an ffmpeg filter_complex graph that stretches the source video
|
||
per-segment so each segment's visual duration matches a dub audio layout.
|
||
|
||
`plan` is a list of {orig_start, orig_end, new_start, new_end, stretch_ratio}
|
||
in original-time order (as persisted by dub_generate for stretch_video
|
||
mode). Gaps between plan entries — and the pre-roll / tail — are passed
|
||
through at 1.0× rate so silence and B-roll don't get squashed.
|
||
|
||
`in_label` overrides the input stream reference; e.g. pass "[vsub]" when
|
||
a subtitles filter has already written to that label. Defaults to
|
||
`[{video_input_idx}:v]` for direct source-stream consumption.
|
||
|
||
Returns (filter_graph, output_label). Output label is "[vstretched]" when
|
||
chunks were emitted, or the original input label when the plan was empty
|
||
(caller should fall back to stream-copy in that case).
|
||
"""
|
||
# Empty plan = no stretch — caller should stream-copy the video. Return
|
||
# early so we don't synthesise a degenerate "stretch whole video at 1.0×"
|
||
# graph that would force a needless re-encode.
|
||
if not plan:
|
||
return "", in_label or f"[{video_input_idx}:v]"
|
||
|
||
chunks: list[tuple[float, float, float]] = [] # (a, b, ratio)
|
||
cursor = 0.0
|
||
for entry in plan:
|
||
a = float(entry["orig_start"])
|
||
b = float(entry["orig_end"])
|
||
if a > cursor + 1e-3:
|
||
chunks.append((cursor, a, 1.0)) # gap or pre-roll at native rate
|
||
ratio = float(entry["stretch_ratio"])
|
||
if b > a:
|
||
chunks.append((a, b, ratio))
|
||
cursor = max(cursor, b)
|
||
if orig_dur > cursor + 1e-3:
|
||
chunks.append((cursor, orig_dur, 1.0)) # tail at native rate
|
||
chunks = [(a, b, r) for (a, b, r) in chunks if b > a]
|
||
if not chunks:
|
||
return "", in_label or f"[{video_input_idx}:v]"
|
||
|
||
src = in_label or f"[{video_input_idx}:v]"
|
||
parts: list[str] = []
|
||
labels: list[str] = []
|
||
# `split` lets us tap the same source stream once per chunk without re-
|
||
# decoding. setpts={ratio}*PTS slows down (ratio > 1) or speeds up
|
||
# (ratio < 1) each chunk; PTS-STARTPTS first to normalise the timestamp
|
||
# base after the trim.
|
||
split_labels = [f"[vsplit{idx}]" for idx in range(len(chunks))]
|
||
parts.append(f"{src}split={len(chunks)}{''.join(split_labels)}")
|
||
for idx, ((a, b, ratio), split_lbl) in enumerate(zip(chunks, split_labels)):
|
||
out_label = f"[vstr{idx}]"
|
||
labels.append(out_label)
|
||
parts.append(
|
||
f"{split_lbl}trim=start={a:.4f}:end={b:.4f},"
|
||
f"setpts=PTS-STARTPTS,setpts={ratio:.6f}*PTS{out_label}"
|
||
)
|
||
parts.append("".join(labels) + f"concat=n={len(chunks)}:v=1:a=0[vstretched]")
|
||
return ";".join(parts), "[vstretched]"
|
||
|
||
|
||
def _video_stretch_plan_for(job: dict, lang_code: str) -> dict | None:
|
||
"""Return the persisted stretch plan + total durations for `lang_code`,
|
||
or None if this job didn't use stretch_video mode (or no plan exists).
|
||
"""
|
||
if (job.get("timing_strategy") or "").lower() != "stretch_video":
|
||
return None
|
||
plans = job.get("video_stretch_plans") or {}
|
||
entry = plans.get(lang_code)
|
||
if not entry or not entry.get("plan"):
|
||
return None
|
||
return entry
|
||
|
||
|
||
#: Audio export formats → ffmpeg codec args. Unknown formats fall back to
|
||
#: AAC/m4a so a bad request can never produce a broken command.
|
||
_AUDIO_FORMAT_CODECS: dict[str, list[str]] = {
|
||
"wav": ["-c:a", "pcm_s16le"],
|
||
"m4a": ["-c:a", "aac", "-b:a", "192k"],
|
||
"mp3": ["-c:a", "libmp3lame", "-q:a", "2"],
|
||
"flac": ["-c:a", "flac"],
|
||
}
|
||
|
||
|
||
def _build_audio_export_cmd(
|
||
ffmpeg: str,
|
||
track_path: str,
|
||
bg_path: Optional[str],
|
||
out_path: str,
|
||
fmt: str,
|
||
) -> list[str]:
|
||
"""Build the ffmpeg command for an audio-only dub export (#119).
|
||
|
||
No video input, stream-map, or codec — just the dubbed track, optionally
|
||
mixed with the separated background (``no_vocals``), written to ``out_path``
|
||
in the requested ``fmt``. Unknown formats fall back to AAC.
|
||
"""
|
||
codec = _AUDIO_FORMAT_CODECS.get((fmt or "").lower(), _AUDIO_FORMAT_CODECS["m4a"])
|
||
cmd = [ffmpeg, "-y", "-i", track_path]
|
||
if bg_path:
|
||
# Mix the dubbed voice over the original background bed (same weights
|
||
# as the video mux path) so ambience/music is preserved.
|
||
cmd += ["-i", bg_path, "-filter_complex",
|
||
"[0:a][1:a]amix=inputs=2:duration=longest:dropout_transition=2:weights=1.2 0.8[aout]",
|
||
"-map", "[aout]"]
|
||
cmd += codec
|
||
cmd.append(out_path)
|
||
return cmd
|
||
|
||
|
||
@router.get("/dub/download/{job_id}")
|
||
@router.get("/dub/download/{job_id}/{filename}")
|
||
async def dub_download(
|
||
job_id: str,
|
||
preserve_bg: bool = Query(True, description="Mix background noise into dubbed tracks"),
|
||
default_track: str = Query("original"),
|
||
include_tracks: str = Query("", description="Comma-separated list of tracks to include (e.g. 'original,de,es'). Empty = include all."),
|
||
save_path: str = Query("", description="Absolute destination path. If set, mux output is copied there and JSON returned instead of FileResponse."),
|
||
burn_subs: bool = Query(False, description="Burn subtitles into the video stream (forces re-encode). Uses dual-subtitle layout when dual=1."),
|
||
dual: bool = Query(False, description="When burn_subs=1, render translated on top of italicised original."),
|
||
out_format: str = Query("m4a", description="Audio-only jobs (#119): output container — wav, m4a, mp3, or flac. Ignored for video jobs."),
|
||
):
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
|
||
tracks = job.get("dubbed_tracks", {})
|
||
if not tracks:
|
||
raise HTTPException(status_code=400, detail="No dubbed tracks generated yet")
|
||
|
||
include_set = set(t.strip() for t in include_tracks.split(",") if t.strip()) if include_tracks else None
|
||
include_original = include_set is None or "original" in include_set
|
||
|
||
if include_set:
|
||
filtered_tracks = {k: v for k, v in tracks.items() if k in include_set}
|
||
else:
|
||
filtered_tracks = dict(tracks)
|
||
|
||
if not filtered_tracks and not include_original:
|
||
raise HTTPException(status_code=400, detail="No tracks selected for export")
|
||
|
||
video_path = job["video_path"]
|
||
stamp = _unique_stamp()
|
||
exports_dir = os.path.join(DUB_DIR, job_id, "exports")
|
||
os.makedirs(exports_dir, exist_ok=True)
|
||
output_path = os.path.join(exports_dir, f"dubbed_video_{stamp}.mp4")
|
||
ffmpeg = find_ffmpeg()
|
||
|
||
# ── Audio-only dubbing (#119) ─────────────────────────────────────────
|
||
# No source video to mux into — export the dubbed track (optionally mixed
|
||
# with the separated background) straight to an audio container.
|
||
if (job.get("input_type") or "video").lower() == "audio":
|
||
if default_track and default_track != "original" and default_track in filtered_tracks:
|
||
lang_code, track_info = default_track, filtered_tracks[default_track]
|
||
elif filtered_tracks:
|
||
lang_code, track_info = next(iter(filtered_tracks.items()))
|
||
else:
|
||
raise HTTPException(status_code=400, detail="No dubbed track selected for audio export")
|
||
|
||
fmt = (out_format or "m4a").lower()
|
||
if fmt not in _AUDIO_FORMAT_CODECS:
|
||
fmt = "m4a"
|
||
# lang_code is already constrained to an existing track key, but
|
||
# allowlist-sanitize it before it reaches the output path so a path
|
||
# component can never carry separators/traversal (same pattern as
|
||
# safe_name below).
|
||
safe_lang = "".join(c for c in lang_code if c.isalnum() or c in "-_") or "track"
|
||
out_path = os.path.join(exports_dir, f"dubbed_audio_{safe_lang}_{stamp}.{fmt}")
|
||
bg = job.get("no_vocals_path") if preserve_bg else None
|
||
bg = bg if (bg and os.path.exists(bg)) else None
|
||
cmd = _build_audio_export_cmd(ffmpeg, track_info["path"], bg, out_path, fmt)
|
||
try:
|
||
rc, _, stderr = await run_ffmpeg(cmd, timeout=1800.0)
|
||
if rc != 0:
|
||
raise Exception(stderr.decode(errors="replace") if stderr else "ffmpeg audio export non-zero")
|
||
except asyncio.TimeoutError:
|
||
raise HTTPException(status_code=504, detail="ffmpeg audio export timed out")
|
||
except HTTPException:
|
||
raise
|
||
except Exception as e:
|
||
raise HTTPException(
|
||
status_code=500,
|
||
detail=f"ffmpeg failed to export dubbed audio: {e}. Verify ffmpeg is installed (`ffmpeg -version`) and the dubbed track exists.",
|
||
)
|
||
if not os.path.exists(out_path) or os.path.getsize(out_path) == 0:
|
||
raise HTTPException(status_code=500, detail="ffmpeg audio export produced no output file")
|
||
logger.info("Dub audio export wrote %s (%d bytes)", out_path, os.path.getsize(out_path))
|
||
|
||
base_name = os.path.splitext(job.get("filename", "output"))[0]
|
||
safe_name = "".join(c for c in base_name if c.isalnum() or c in "-_ ").strip() or "output"
|
||
dl_name = f"dubbed_{safe_name}_{safe_lang}_{stamp}.{fmt}"
|
||
media_type = _MEDIA_TYPES.get(f".{fmt}", "audio/mp4")
|
||
if save_path:
|
||
return _native_save(out_path, save_path, dl_name, media_type=media_type)
|
||
return FileResponse(
|
||
out_path, media_type=media_type,
|
||
headers={"Content-Disposition": f'attachment; filename="{dl_name}"'},
|
||
)
|
||
|
||
# Determine whether this export should drive video through a per-segment
|
||
# stretch graph (Mode B). Stretch is keyed off the default_track's plan
|
||
# because the video can only physically follow one timeline at a time.
|
||
# If multiple dub tracks are included and they were generated under
|
||
# stretch_video, only the default_track is visually in sync — other
|
||
# tracks share the same (stretched) video. Single-track export is the
|
||
# supported common case.
|
||
stretch_entry = _video_stretch_plan_for(job, default_track) if default_track and default_track != "original" else None
|
||
# Subtitle burn under stretch_video would render cues at the original
|
||
# timestamps onto a re-timed video — they'd drift. Skip the burn pass
|
||
# in that combo and log; the user can still export the SRT/VTT
|
||
# separately and the new-layout timing lives there.
|
||
if stretch_entry and burn_subs:
|
||
logger.warning(
|
||
"stretch_video + burn_subs is not supported in one pass; "
|
||
"skipping subtitle burn for job %s. Export the SRT/VTT separately.",
|
||
job_id,
|
||
)
|
||
burn_subs = False
|
||
|
||
sub_path = _write_burn_srt(job, exports_dir, stamp, dual) if burn_subs else None
|
||
|
||
cmd = [ffmpeg, "-i", video_path]
|
||
input_idx = 1
|
||
|
||
bg_audio = job.get("no_vocals_path") if preserve_bg else None
|
||
bg_idx = None
|
||
if bg_audio and os.path.exists(bg_audio) and filtered_tracks:
|
||
cmd += ["-i", bg_audio]
|
||
bg_idx = input_idx
|
||
input_idx += 1
|
||
|
||
tracks_to_process = []
|
||
for lang_code, track_info in filtered_tracks.items():
|
||
cmd += ["-i", track_info["path"]]
|
||
tracks_to_process.append({"lang_code": lang_code, "idx": input_idx, "info": track_info})
|
||
input_idx += 1
|
||
|
||
filter_parts: list[str] = []
|
||
video_map = "0:v:0"
|
||
if sub_path:
|
||
esc = _ffmpeg_filter_escape(sub_path)
|
||
filter_parts.append(f"[0:v]subtitles='{esc}'[vsub]")
|
||
video_map = "[vsub]"
|
||
if stretch_entry:
|
||
orig_dur = float(stretch_entry.get("orig_duration") or job.get("duration") or 0.0)
|
||
graph, vlabel = _build_video_stretch_filter_graph(
|
||
stretch_entry["plan"], orig_dur, video_input_idx=0,
|
||
in_label=video_map if video_map != "0:v:0" else None,
|
||
)
|
||
if graph:
|
||
filter_parts.append(graph)
|
||
video_map = vlabel
|
||
|
||
cmd += ["-map", video_map]
|
||
if include_original:
|
||
cmd += ["-map", "0:a:0"]
|
||
|
||
if bg_idx is not None:
|
||
for i, t in enumerate(tracks_to_process):
|
||
out_label = f"[aout{i}]"
|
||
filter_parts.append(f"[{bg_idx}:a][{t['idx']}:a]amix=inputs=2:duration=longest:dropout_transition=2:weights=0.8 1.2{out_label}")
|
||
t["out_label"] = out_label
|
||
for t in tracks_to_process:
|
||
cmd += ["-map", t["out_label"]]
|
||
else:
|
||
for t in tracks_to_process:
|
||
cmd += ["-map", f"{t['idx']}:a:0"]
|
||
|
||
if filter_parts:
|
||
cmd += ["-filter_complex", ";".join(filter_parts)]
|
||
|
||
# Burning subs or per-segment video stretch both force a real video
|
||
# re-encode; stream-copy is only viable when nothing touches the video
|
||
# filter chain.
|
||
if sub_path or stretch_entry:
|
||
cmd += ["-c:v", "libx264", "-preset", "medium", "-crf", "20", "-pix_fmt", "yuv420p"]
|
||
else:
|
||
cmd += ["-c:v", "copy"]
|
||
cmd += ["-c:a", "aac", "-b:a", "192k"]
|
||
|
||
audio_stream_idx = 0
|
||
if include_original:
|
||
cmd += [f"-metadata:s:a:{audio_stream_idx}", "language=und", f"-metadata:s:a:{audio_stream_idx}", "title=Original"]
|
||
audio_stream_idx += 1
|
||
|
||
for t in tracks_to_process:
|
||
cmd += [
|
||
f"-metadata:s:a:{audio_stream_idx}", f"language={t['lang_code']}",
|
||
f"-metadata:s:a:{audio_stream_idx}", f"title={t['info']['language']}"
|
||
]
|
||
t["stream_idx"] = audio_stream_idx
|
||
audio_stream_idx += 1
|
||
|
||
total_audio = (1 if include_original else 0) + len(tracks_to_process)
|
||
for i in range(total_audio):
|
||
cmd += [f"-disposition:a:{i}", "0"]
|
||
|
||
if default_track == "original" and include_original:
|
||
cmd += ["-disposition:a:0", "default"]
|
||
else:
|
||
target_idx = 0
|
||
for t in tracks_to_process:
|
||
if t['lang_code'] == default_track:
|
||
target_idx = t["stream_idx"]
|
||
break
|
||
cmd += [f"-disposition:a:{target_idx}", "default"]
|
||
|
||
# In stretch_video mode the video and audio durations should match
|
||
# within sub-frame precision, but `-shortest` can still cut off the
|
||
# trailing frame; let ffmpeg keep both streams. Otherwise keep the
|
||
# legacy `-shortest` so a slightly-overrunning track doesn't extend
|
||
# the mux past the video.
|
||
if not stretch_entry:
|
||
cmd += ["-shortest"]
|
||
cmd += [output_path, "-y"]
|
||
|
||
try:
|
||
rc, _, stderr = await run_ffmpeg(cmd, timeout=1800.0)
|
||
if rc != 0:
|
||
raise Exception(stderr.decode(errors="replace") if stderr else "ffmpeg mux non-zero")
|
||
except asyncio.TimeoutError:
|
||
raise HTTPException(status_code=504, detail="ffmpeg mux timed out")
|
||
except HTTPException:
|
||
raise
|
||
except Exception as e:
|
||
raise HTTPException(
|
||
status_code=500,
|
||
detail=f"ffmpeg failed to combine video + dubbed audio: {e}. Verify ffmpeg is installed (`ffmpeg -version`), and check that every dubbed track file exists in the job folder.",
|
||
)
|
||
|
||
if not os.path.exists(output_path) or os.path.getsize(output_path) == 0:
|
||
raise HTTPException(status_code=500, detail="ffmpeg mux produced no output file")
|
||
logger.info("Dub mux wrote %s (%d bytes)", output_path, os.path.getsize(output_path))
|
||
|
||
base_name = os.path.splitext(job.get('filename', 'output'))[0]
|
||
safe_name = ''.join(c for c in base_name if c.isalnum() or c in '-_ ').strip() or 'output'
|
||
dl_name = f"dubbed_{safe_name}_{stamp}.mp4"
|
||
|
||
if save_path:
|
||
return _native_save(output_path, save_path, dl_name, media_type="video/mp4")
|
||
|
||
return FileResponse(
|
||
output_path, media_type="video/mp4",
|
||
headers={"Content-Disposition": f'attachment; filename="{dl_name}"'},
|
||
)
|
||
|
||
|
||
_MEDIA_TYPES = {
|
||
".mp4": "video/mp4",
|
||
".m4v": "video/mp4",
|
||
".mov": "video/quicktime",
|
||
".webm": "video/webm",
|
||
".mkv": "video/x-matroska",
|
||
".m4a": "audio/mp4",
|
||
".mp3": "audio/mpeg",
|
||
".wav": "audio/wav",
|
||
".flac": "audio/flac",
|
||
".ogg": "audio/ogg",
|
||
}
|
||
|
||
|
||
@router.get("/dub/media/{job_id}")
|
||
async def dub_get_media(job_id: str):
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
video_path = job["video_path"]
|
||
if not os.path.exists(video_path):
|
||
raise HTTPException(status_code=404, detail="Media file not found")
|
||
# Pass an explicit media_type. Without this Starlette falls back to
|
||
# mimetypes.guess_type, which on some platforms returns the wrong
|
||
# MIME (e.g. "application/octet-stream" for .mkv), and the Tauri
|
||
# WebView then refuses to render the <video> element — leaving a
|
||
# silent black box. Default to video/mp4 because the ingest pipeline
|
||
# remuxes URL downloads to mp4 (dub_pipeline.yt_download_sync).
|
||
ext = os.path.splitext(video_path)[1].lower()
|
||
return FileResponse(video_path, media_type=_MEDIA_TYPES.get(ext, "video/mp4"))
|
||
|
||
@router.get("/dub/preview-video/{job_id}")
|
||
async def dub_preview_video(
|
||
job_id: str,
|
||
lang: str = Query(..., description="Language code of the dubbed track to mux in"),
|
||
preserve_bg: bool = Query(True),
|
||
):
|
||
"""Return an inline-playable MP4 with the chosen dubbed track as sole audio.
|
||
|
||
Caches per lang+preserve_bg combination under exports/preview_{lang}_{bg}.mp4.
|
||
Cache is invalidated when the underlying dubbed track mtime is newer than the cache.
|
||
"""
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
|
||
tracks = job.get("dubbed_tracks", {})
|
||
track_info = tracks.get(lang)
|
||
if not track_info:
|
||
raise HTTPException(status_code=404, detail=f"No dubbed track for lang={lang}")
|
||
|
||
track_path = track_info.get("path")
|
||
if not track_path or not os.path.exists(track_path):
|
||
raise HTTPException(status_code=404, detail="Dubbed track file missing")
|
||
|
||
video_path = job.get("video_path")
|
||
if not video_path or not os.path.exists(video_path):
|
||
raise HTTPException(status_code=404, detail="Source video missing")
|
||
|
||
bg_audio = job.get("no_vocals_path") if preserve_bg else None
|
||
has_bg = bool(bg_audio and os.path.exists(bg_audio))
|
||
|
||
exports_dir = os.path.join(DUB_DIR, job_id, "exports")
|
||
os.makedirs(exports_dir, exist_ok=True)
|
||
bg_suffix = "bg" if (preserve_bg and has_bg) else "nobg"
|
||
preview_path = os.path.join(exports_dir, f"preview_{lang}_{bg_suffix}.mp4")
|
||
|
||
track_mtime = os.path.getmtime(track_path)
|
||
cache_ok = (
|
||
os.path.exists(preview_path)
|
||
and os.path.getsize(preview_path) > 0
|
||
and os.path.getmtime(preview_path) >= track_mtime
|
||
)
|
||
|
||
if not cache_ok:
|
||
ffmpeg = find_ffmpeg()
|
||
stretch_entry = _video_stretch_plan_for(job, lang)
|
||
cmd = [ffmpeg, "-i", video_path]
|
||
input_idx = 1
|
||
if preserve_bg and has_bg:
|
||
cmd += ["-i", bg_audio]
|
||
bg_idx = input_idx
|
||
input_idx += 1
|
||
else:
|
||
bg_idx = None
|
||
cmd += ["-i", track_path]
|
||
track_idx = input_idx
|
||
|
||
# Build filter graph. In stretch_video mode we splice the source
|
||
# video into per-segment chunks, setpts each to match the dub audio
|
||
# layout, and concat them — so audio plays at natural rate and the
|
||
# visuals follow. Otherwise we stream-copy video for speed.
|
||
filter_parts: list[str] = []
|
||
video_map = "0:v:0"
|
||
if stretch_entry:
|
||
orig_dur = float(stretch_entry.get("orig_duration") or job.get("duration") or 0.0)
|
||
graph, vlabel = _build_video_stretch_filter_graph(
|
||
stretch_entry["plan"], orig_dur, video_input_idx=0,
|
||
)
|
||
if graph:
|
||
filter_parts.append(graph)
|
||
video_map = vlabel
|
||
if bg_idx is not None:
|
||
filter_parts.append(
|
||
f"[{bg_idx}:a][{track_idx}:a]amix=inputs=2:duration=longest:dropout_transition=2:weights=0.8 1.2[aout]"
|
||
)
|
||
|
||
cmd += ["-map", video_map]
|
||
if bg_idx is not None:
|
||
cmd += ["-map", "[aout]"]
|
||
else:
|
||
cmd += ["-map", f"{track_idx}:a:0"]
|
||
if filter_parts:
|
||
cmd += ["-filter_complex", ";".join(filter_parts)]
|
||
|
||
# Stretch path needs a real encode; stream-copy otherwise.
|
||
if stretch_entry:
|
||
cmd += ["-c:v", "libx264", "-preset", "medium", "-crf", "20", "-pix_fmt", "yuv420p"]
|
||
else:
|
||
cmd += ["-c:v", "copy"]
|
||
cmd += ["-c:a", "aac", "-b:a", "192k"]
|
||
# `-shortest` would cut the stretched video at the (slightly different)
|
||
# audio length and lose the trailing frame; only use it on the copy path.
|
||
if not stretch_entry:
|
||
cmd += ["-shortest"]
|
||
cmd += [preview_path, "-y"]
|
||
|
||
try:
|
||
rc, _, stderr = await run_ffmpeg(cmd, timeout=900.0)
|
||
if rc != 0:
|
||
raise Exception(stderr.decode(errors="replace") if stderr else "ffmpeg mux non-zero")
|
||
except asyncio.TimeoutError:
|
||
raise HTTPException(status_code=504, detail="preview mux timed out")
|
||
except HTTPException:
|
||
raise
|
||
except Exception as e:
|
||
raise HTTPException(
|
||
status_code=500,
|
||
detail=f"ffmpeg failed to build the preview stream: {str(e)[:300]}. This usually means the source video can't be re-encoded on the fly — try downloading the MP4 instead.",
|
||
)
|
||
|
||
if not os.path.exists(preview_path) or os.path.getsize(preview_path) == 0:
|
||
raise HTTPException(status_code=500, detail="preview mux produced empty file")
|
||
|
||
return FileResponse(preview_path, media_type="video/mp4")
|
||
|
||
|
||
@router.get("/dub/thumb/{job_id}")
|
||
async def dub_get_thumb(job_id: str):
|
||
"""Serve the extracted dub video thumbnail (jpg). 404 if not generated."""
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
# Resolve under DUB_DIR to prevent traversal.
|
||
thumb = os.path.join(DUB_DIR, job_id, "thumb.jpg")
|
||
if not os.path.exists(thumb):
|
||
raise HTTPException(status_code=404, detail="Thumbnail not available")
|
||
return FileResponse(thumb, media_type="image/jpeg", headers={"Cache-Control": "public, max-age=3600"})
|
||
|
||
@router.get("/dub/audio/{job_id}")
|
||
async def dub_get_audio(job_id: str):
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
audio = job.get("audio_path")
|
||
if not audio or not os.path.exists(audio):
|
||
raise HTTPException(status_code=404, detail="Audio file not found")
|
||
return FileResponse(audio, media_type="audio/wav")
|
||
|
||
@router.get("/dub/preview/{job_id}/{segment_index}")
|
||
async def dub_preview_segment(job_id: str, segment_index: int):
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
seg_path = os.path.join(DUB_DIR, job_id, f"seg_{segment_index}.wav")
|
||
if not os.path.exists(seg_path):
|
||
raise HTTPException(status_code=404, detail="Segment not generated yet")
|
||
return FileResponse(seg_path, media_type="audio/wav")
|
||
|
||
|
||
@router.get("/dub/download-audio/{job_id}")
|
||
@router.get("/dub/download-audio/{job_id}/{filename}")
|
||
async def dub_download_audio(job_id: str, lang: str = Query(None), preserve_bg: bool = Query(True), save_path: str = Query("")):
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
|
||
tracks = job.get("dubbed_tracks", {})
|
||
if lang and lang in tracks:
|
||
wav_path = tracks[lang]["path"]
|
||
elif tracks:
|
||
wav_path = list(tracks.values())[0]["path"]
|
||
else:
|
||
raise HTTPException(status_code=400, detail="No dubbed audio track generated yet")
|
||
|
||
if not os.path.exists(wav_path):
|
||
raise HTTPException(status_code=404, detail="Audio file not found")
|
||
|
||
lang_label = lang or list(tracks.keys())[0]
|
||
stamp = _unique_stamp()
|
||
exports_dir = os.path.join(DUB_DIR, job_id, "exports")
|
||
os.makedirs(exports_dir, exist_ok=True)
|
||
|
||
bg_audio = job.get("no_vocals_path") if preserve_bg else None
|
||
if bg_audio and os.path.exists(bg_audio):
|
||
ffmpeg = find_ffmpeg()
|
||
final_audio_path = os.path.join(exports_dir, f"mixed_dub_{lang_label}_{stamp}.wav")
|
||
cmd = [
|
||
ffmpeg, "-i", bg_audio, "-i", wav_path,
|
||
"-filter_complex", "[0:a][1:a]amix=inputs=2:duration=longest:dropout_transition=2:weights=0.8 1.2[aout]",
|
||
"-map", "[aout]", "-c:a", "pcm_s16le", "-y", final_audio_path
|
||
]
|
||
try:
|
||
rc, _, stderr = await run_ffmpeg(cmd, timeout=900.0)
|
||
if rc != 0:
|
||
raise Exception(stderr.decode(errors="replace") if stderr else "ffmpeg mix non-zero")
|
||
if not os.path.exists(final_audio_path) or os.path.getsize(final_audio_path) == 0:
|
||
raise Exception("ffmpeg mix produced no output file")
|
||
wav_path = final_audio_path
|
||
logger.info("Dub audio mix wrote %s (%d bytes)", final_audio_path, os.path.getsize(final_audio_path))
|
||
except Exception as e:
|
||
logger.error(f"Failed to mix audio: {str(e)}")
|
||
|
||
base_name = os.path.splitext(job.get('filename', 'audio'))[0]
|
||
safe_name = ''.join(c for c in base_name if c.isalnum() or c in '-_ ').strip() or 'audio'
|
||
dl_name = f"dubbed_audio_{lang_label}_{safe_name}_{stamp}.wav"
|
||
if save_path:
|
||
return _native_save(wav_path, save_path, dl_name, media_type="audio/wav")
|
||
return FileResponse(
|
||
wav_path, media_type="audio/wav",
|
||
headers={"Content-Disposition": f'attachment; filename="{dl_name}"'},
|
||
)
|
||
|
||
|
||
def _format_srt_time(seconds):
|
||
h = int(seconds // 3600)
|
||
m = int((seconds % 3600) // 60)
|
||
s = int(seconds % 60)
|
||
ms = int((seconds % 1) * 1000)
|
||
return f"{h:02d}:{m:02d}:{s:02d},{ms:03d}"
|
||
|
||
def _pick_subtitle_text(seg: dict, dual: bool) -> str:
|
||
"""One line per subtitle cue, unless dual=true and an original exists.
|
||
|
||
Dual layout stacks translated text on top of the (italicised) original, the
|
||
way Netflix / language-learning apps present them:
|
||
|
||
Das Spiel wirklich zu verändern.
|
||
<i>Actually change the game.</i>
|
||
"""
|
||
translated = (seg.get("text") or "").strip()
|
||
original = (seg.get("text_original") or "").strip()
|
||
if not dual or not original or original == translated:
|
||
return translated or original
|
||
return f"{translated}\n<i>{original}</i>"
|
||
|
||
|
||
@router.get("/dub/srt/{job_id}")
|
||
@router.get("/dub/srt/{job_id}/{filename}")
|
||
async def dub_export_srt(job_id: str, dual: bool = False):
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
|
||
segments = job.get("segments", [])
|
||
if not segments:
|
||
raise HTTPException(status_code=400, detail="No transcript segments available")
|
||
|
||
srt_lines = []
|
||
for i, seg in enumerate(segments):
|
||
start_ts = _format_srt_time(seg["start"])
|
||
end_ts = _format_srt_time(seg["end"])
|
||
srt_lines.append(f"{i + 1}")
|
||
srt_lines.append(f"{start_ts} --> {end_ts}")
|
||
srt_lines.append(_pick_subtitle_text(seg, dual))
|
||
srt_lines.append("")
|
||
|
||
srt_content = "\n".join(srt_lines)
|
||
base_name = os.path.splitext(job.get('filename', 'video'))[0]
|
||
suffix = "_dual" if dual else ""
|
||
return Response(
|
||
content=srt_content,
|
||
media_type="text/plain",
|
||
headers={"Content-Disposition": f'attachment; filename="subtitles_{base_name}{suffix}.srt"'},
|
||
)
|
||
|
||
def _format_vtt_time(seconds):
|
||
h = int(seconds // 3600)
|
||
m = int((seconds % 3600) // 60)
|
||
s = int(seconds % 60)
|
||
ms = int((seconds % 1) * 1000)
|
||
return f"{h:02d}:{m:02d}:{s:02d}.{ms:03d}"
|
||
|
||
@router.get("/dub/vtt/{job_id}")
|
||
@router.get("/dub/vtt/{job_id}/{filename}")
|
||
async def dub_export_vtt(job_id: str, dual: bool = False):
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
|
||
segments = job.get("segments", [])
|
||
if not segments:
|
||
raise HTTPException(status_code=400, detail="No transcript segments available")
|
||
|
||
vtt_lines = ["WEBVTT", ""]
|
||
for i, seg in enumerate(segments):
|
||
start_ts = _format_vtt_time(seg["start"])
|
||
end_ts = _format_vtt_time(seg["end"])
|
||
vtt_lines.append(str(i + 1))
|
||
vtt_lines.append(f"{start_ts} --> {end_ts}")
|
||
vtt_lines.append(_pick_subtitle_text(seg, dual))
|
||
vtt_lines.append("")
|
||
|
||
vtt_content = "\n".join(vtt_lines)
|
||
base_name = os.path.splitext(job.get('filename', 'video'))[0]
|
||
suffix = "_dual" if dual else ""
|
||
return Response(
|
||
content=vtt_content,
|
||
media_type="text/vtt",
|
||
headers={"Content-Disposition": f'attachment; filename="subtitles_{base_name}{suffix}.vtt"'},
|
||
)
|
||
|
||
|
||
@router.get("/dub/export-segments/{job_id}")
|
||
async def dub_export_segments_zip(job_id: str):
|
||
import zipfile
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
|
||
segments = job.get("segments", [])
|
||
if not segments:
|
||
raise HTTPException(status_code=400, detail="No segments available")
|
||
|
||
zip_buffer = io.BytesIO()
|
||
with zipfile.ZipFile(zip_buffer, "w", zipfile.ZIP_DEFLATED) as zf:
|
||
for i, seg in enumerate(segments):
|
||
seg_path = os.path.join(DUB_DIR, job_id, f"seg_{i}.wav")
|
||
if os.path.exists(seg_path):
|
||
speaker = seg.get("speaker_id", "Speaker1").replace(" ", "")
|
||
start_str = f"{seg['start']:.2f}"
|
||
end_str = f"{seg['end']:.2f}"
|
||
arc_name = f"{i+1:03d}_{start_str}-{end_str}_{speaker}.wav"
|
||
zf.write(seg_path, arc_name)
|
||
|
||
zip_buffer.seek(0)
|
||
base_name = os.path.splitext(job.get('filename', 'video'))[0]
|
||
safe_name = ''.join(c for c in base_name if c.isalnum() or c in '-_ ').strip() or 'segments'
|
||
return Response(
|
||
content=zip_buffer.read(),
|
||
media_type="application/zip",
|
||
headers={"Content-Disposition": f'attachment; filename="segments_{safe_name}.zip"'},
|
||
)
|
||
|
||
@router.get("/dub/download-mp3/{job_id}")
|
||
@router.get("/dub/download-mp3/{job_id}/{filename}")
|
||
async def dub_download_mp3(job_id: str, lang: str = Query(None), preserve_bg: bool = Query(True), save_path: str = Query(""), bitrate: str = Query("192k")):
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
|
||
tracks = job.get("dubbed_tracks", {})
|
||
if lang and lang in tracks:
|
||
wav_path = tracks[lang]["path"]
|
||
elif tracks:
|
||
wav_path = list(tracks.values())[0]["path"]
|
||
else:
|
||
raise HTTPException(status_code=400, detail="No dubbed audio track generated yet")
|
||
|
||
if not os.path.exists(wav_path):
|
||
raise HTTPException(status_code=404, detail="Audio file not found")
|
||
|
||
lang_label = lang or list(tracks.keys())[0]
|
||
ffmpeg = find_ffmpeg()
|
||
stamp = _unique_stamp()
|
||
exports_dir = os.path.join(DUB_DIR, job_id, "exports")
|
||
os.makedirs(exports_dir, exist_ok=True)
|
||
|
||
source_path = wav_path
|
||
bg_audio = job.get("no_vocals_path") if preserve_bg else None
|
||
if bg_audio and os.path.exists(bg_audio):
|
||
mixed_path = os.path.join(exports_dir, f"mixed_mp3_{lang_label}_{stamp}.wav")
|
||
cmd_mix = [
|
||
ffmpeg, "-i", bg_audio, "-i", wav_path,
|
||
"-filter_complex", "[0:a][1:a]amix=inputs=2:duration=longest:dropout_transition=2:weights=0.8 1.2[aout]",
|
||
"-map", "[aout]", "-c:a", "pcm_s16le", "-y", mixed_path
|
||
]
|
||
try:
|
||
rc, _, _ = await run_ffmpeg(cmd_mix, timeout=900.0)
|
||
if rc == 0 and os.path.exists(mixed_path) and os.path.getsize(mixed_path) > 0:
|
||
source_path = mixed_path
|
||
except Exception as e:
|
||
logger.error(f"Failed to mix audio for MP3: {e}")
|
||
|
||
mp3_path = os.path.join(exports_dir, f"dubbed_{lang_label}_{stamp}.mp3")
|
||
# Accept '128', '192k' etc. — normalize to ffmpeg's 'Nk' form and clamp
|
||
# to a sensible range so a malformed value can't stall encoding.
|
||
_br = str(bitrate or "192k").lower().rstrip("k") or "192"
|
||
try:
|
||
_br_int = max(64, min(int(_br), 320))
|
||
except ValueError:
|
||
_br_int = 192
|
||
br_arg = f"{_br_int}k"
|
||
cmd = [ffmpeg, "-i", source_path, "-codec:a", "libmp3lame", "-b:a", br_arg, "-y", mp3_path]
|
||
try:
|
||
rc, _, stderr = await run_ffmpeg(cmd, timeout=600.0)
|
||
if rc != 0:
|
||
raise Exception(stderr.decode(errors="replace") if stderr else "MP3 encode non-zero")
|
||
except asyncio.TimeoutError:
|
||
raise HTTPException(status_code=504, detail="MP3 encoding timed out")
|
||
except HTTPException:
|
||
raise
|
||
except Exception as e:
|
||
raise HTTPException(
|
||
status_code=500,
|
||
detail=f"ffmpeg couldn't encode MP3: {e}. Check that libmp3lame is compiled into your ffmpeg build (`ffmpeg -codecs | grep mp3`) — reinstall via homebrew if it's missing.",
|
||
)
|
||
|
||
if not os.path.exists(mp3_path) or os.path.getsize(mp3_path) == 0:
|
||
raise HTTPException(status_code=500, detail="MP3 encoding produced no output file")
|
||
logger.info("Dub MP3 encoded %s (%d bytes)", mp3_path, os.path.getsize(mp3_path))
|
||
|
||
base_name = os.path.splitext(job.get('filename', 'audio'))[0]
|
||
safe_name = ''.join(c for c in base_name if c.isalnum() or c in '-_ ').strip() or 'audio'
|
||
dl_name = f"dubbed_{lang_label}_{safe_name}_{stamp}.mp3"
|
||
if save_path:
|
||
return _native_save(mp3_path, save_path, dl_name, media_type="audio/mpeg")
|
||
return FileResponse(
|
||
mp3_path, media_type="audio/mpeg",
|
||
headers={"Content-Disposition": f'attachment; filename="{dl_name}"'},
|
||
)
|
||
|
||
@router.get("/dub/export-stems/{job_id}")
|
||
async def dub_export_stems(job_id: str, lang: str = Query(None)):
|
||
import zipfile
|
||
job = _get_job(job_id)
|
||
if not job:
|
||
raise HTTPException(status_code=404, detail="Job not found")
|
||
|
||
tracks = job.get("dubbed_tracks", {})
|
||
if not tracks:
|
||
raise HTTPException(status_code=400, detail="No dubbed tracks generated yet")
|
||
|
||
if lang and lang in tracks:
|
||
vocals_path = tracks[lang]["path"]
|
||
lang_label = lang
|
||
elif tracks:
|
||
first_key = list(tracks.keys())[0]
|
||
vocals_path = tracks[first_key]["path"]
|
||
lang_label = first_key
|
||
else:
|
||
raise HTTPException(status_code=400, detail="No dubbed audio track")
|
||
|
||
bg_path = job.get("no_vocals_path")
|
||
|
||
zip_buffer = io.BytesIO()
|
||
with zipfile.ZipFile(zip_buffer, "w", zipfile.ZIP_DEFLATED) as zf:
|
||
if os.path.exists(vocals_path):
|
||
zf.write(vocals_path, f"vocals_dubbed_{lang_label}.wav")
|
||
if bg_path and os.path.exists(bg_path):
|
||
zf.write(bg_path, "background_original.wav")
|
||
|
||
zip_buffer.seek(0)
|
||
base_name = os.path.splitext(job.get('filename', 'video'))[0]
|
||
safe_name = ''.join(c for c in base_name if c.isalnum() or c in '-_ ').strip() or 'stems'
|
||
return Response(
|
||
content=zip_buffer.read(),
|
||
media_type="application/zip",
|
||
headers={"Content-Disposition": f'attachment; filename="stems_{safe_name}.zip"'},
|
||
)
|