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fix(ffmpeg): 修复视频裁剪时间戳问题

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- 在 trim 过滤器后添加 setpts 过滤器以重置时间戳
- 修复 skip、tail 和 show 效果的时间戳计算问题
- 确保裁剪后的视频片段时间戳从零开始
- 避免因时间戳不连续导致的播放问题
This commit is contained in:
Jerry Yan
2025-12-09 18:07:48 +08:00
parent d7704005b6
commit 4af52d5a54
1 changed files with 3 additions and 3 deletions
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6
entity/ffmpeg.py
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@@ -329,7 +329,7 @@ class FfmpegTask(object):
skip_seconds = float(param)
if skip_seconds > 0:
effect_index += 1
filter_args.append(f"{video_output_str}trim=start={skip_seconds}[v_eff{effect_index}]")
filter_args.append(f"{video_output_str}trim=start={skip_seconds},setpts=PTS-STARTPTS[v_eff{effect_index}]")
video_output_str = f"[v_eff{effect_index}]"
elif effect.startswith("tail:"):
param = effect.split(":", 2)[1]
@@ -342,7 +342,7 @@ class FfmpegTask(object):
# 使用reverse+trim+reverse的方法来精确获取最后N秒
filter_args.append(f"{video_output_str}reverse[v_rev{effect_index}]")
filter_args.append(f"[v_rev{effect_index}]trim=duration={tail_seconds}[v_trim{effect_index}]")
filter_args.append(f"[v_trim{effect_index}]reverse[v_eff{effect_index}]")
filter_args.append(f"[v_trim{effect_index}]reverse,setpts=PTS-STARTPTS[v_eff{effect_index}]")
video_output_str = f"[v_eff{effect_index}]"
elif effect.startswith("show:"):
param = effect.split(":", 2)[1]
@@ -351,7 +351,7 @@ class FfmpegTask(object):
show_seconds = float(param)
if show_seconds > 0:
effect_index += 1
filter_args.append(f"{video_output_str}trim=end={show_seconds}[v_eff{effect_index}]")
filter_args.append(f"{video_output_str}trim=end={show_seconds},setpts=PTS-STARTPTS[v_eff{effect_index}]")
video_output_str = f"[v_eff{effect_index}]"
elif effect.startswith("grid4:"):
param = effect.split(":", 2)[1]