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Adjust long video caption timing to start after 2s and show for 6s

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hbrain 2026-05-31 17:25:42 +00:00
parent 2ae7c75f91
commit 7d23a71947
1 changed files with 51 additions and 9 deletions
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60
movmaker.py
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@ -60,6 +60,9 @@ CLIP_AUDIO_SIDECHAIN_THRESHOLD = 0.04
CLIP_AUDIO_SIDECHAIN_RATIO = 8.0
CLIP_AUDIO_SIDECHAIN_ATTACK = 5.0
CLIP_AUDIO_SIDECHAIN_RELEASE = 250.0
CAPTION_LONG_VIDEO_MIN_DURATION = 10.0
CAPTION_LONG_VIDEO_DELAY = 2.0
CAPTION_LONG_VIDEO_SHOW = 6.0
ORDER_FILENAME = "order.json"
@ -988,6 +991,7 @@ def build_video(
video_intro_duration: float | None = None,
intro_visible_lead: float = 0.0,
skip_video_fade_out: bool = False,
clip_kinds: list[str] | None = None,
) -> None:
"""Assemble normalized clips, overlays, and audio into the final MP4."""
output.parent.mkdir(parents=True, exist_ok=True)
@ -1132,17 +1136,26 @@ def build_video(
if not caption:
continue
if n == 1:
start = intro_duration
end = total_duration
base_start = intro_duration
base_end = total_duration
elif idx == 0:
start = intro_duration
end = intro_duration + transition_offsets[0]
base_start = intro_duration
base_end = intro_duration + transition_offsets[0]
elif idx == n - 1:
start = intro_duration + transition_offsets[idx - 1] + fade
end = total_duration
base_start = intro_duration + transition_offsets[idx - 1] + fade
base_end = total_duration
else:
start = intro_duration + transition_offsets[idx - 1] + fade
end = intro_duration + transition_offsets[idx]
base_start = intro_duration + transition_offsets[idx - 1] + fade
base_end = intro_duration + transition_offsets[idx]
start = base_start
end = base_end
clip_kind = clip_kinds[idx] if clip_kinds and idx < len(clip_kinds) else ""
clip_duration = durations[idx] if idx < len(durations) else 0.0
if clip_kind == "video" and clip_duration > CAPTION_LONG_VIDEO_MIN_DURATION:
start = base_start + CAPTION_LONG_VIDEO_DELAY
end = min(base_end, start + CAPTION_LONG_VIDEO_SHOW)
if end <= start:
continue
caption_fade = min(1.0, max(0.0, (end - start) / 2))
@ -1411,6 +1424,7 @@ def main(argv: list[str] | None = None) -> int:
# Use probed normalized duration for accuracy.
durations = [ffprobe_duration(out) for out in clips]
captions = [data.captions.get(item.path.name, data.captions.get(str(item.path), "")) for item in media]
clip_kinds = [item.kind for item in media]
video_audio = data.video_audio or set()
clip_audio_paths = []
for item in media:
@ -1451,6 +1465,7 @@ def main(argv: list[str] | None = None) -> int:
intro_clip_path = intro_clip
intro_clip_duration = intro_item.duration
captions = ["", *captions]
clip_kinds = ["image", *clip_kinds]
clip_audio_paths = [None, *clip_audio_paths]
clip_stamps = ["", *clip_stamps]
intro_visible_lead = min(intro_item.duration, INTRO_LOGO_FADE_OFFSET)
@ -1460,10 +1475,37 @@ def main(argv: list[str] | None = None) -> int:
clips.append(intro_clip_path)
durations.append(intro_clip_duration)
captions.append("")
clip_kinds.append("image")
clip_audio_paths.append(None)
clip_stamps.append("")
outro_added = True
build_video(clips, durations, audio, clip_audio_paths, output, data, first_media_date, captions, clip_stamps, fade, audio_fade, audio_fade_in, video_fade, args.intro_logo, intro_logo_alpha, width, height, fps, preset, crf, tmp, video_intro_duration, intro_visible_lead=intro_visible_lead, skip_video_fade_out=outro_added)
build_video(
clips,
durations,
audio,
clip_audio_paths,
output,
data,
first_media_date,
captions,
clip_stamps,
fade,
audio_fade,
audio_fade_in,
video_fade,
args.intro_logo,
intro_logo_alpha,
width,
height,
fps,
preset,
crf,
tmp,
video_intro_duration,
intro_visible_lead=intro_visible_lead,
skip_video_fade_out=outro_added,
clip_kinds=clip_kinds,
)
console(f"Done: {output}")
return 0