如何在 ffmpeg 中添加黑色淡入淡出过渡时连接文件列表中的视频

发布于 2025-01-19 10:06:04 字数 667 浏览 1 评论 0原文

我有一段代码可以连接文件列表中的视频。它工作完美。

ffmpeg -f concat -safe 0 -i file_list.txt -c copy mergedVideo.avi

但是，我想在每个视频之间添加黑色淡入淡出过渡。我发现这个代码片段显然可以做到这一点，但它要求您手动输入每个文件。

ffmpeg -i in.mp4 -i main.mp4 -i out.mp4 -filter_complex \
  "[0:v]fade=type=out:duration=2:start_time=28,setpts=PTS-STARTPTS[v0]; \
   [1:v]fade=type=in:duration=2,fade=type=out:duration=2:start_time=28,setpts=PTS-STARTPTS[v1]; \
   [2:v]fade=type=in:duration=2,setpts=PTS-STARTPTS[v2]; \
   [v0][0:a][v1][1:a][v2][2:a]concat=n=3:v=1:a=1[v][a]" \
  -map "[v]" -map "[a]" output.mp4

我希望能够从 txt 文件读取所有视频文件，因为我有数百个视频。如何组合这两个片段，或者是否有更好的方法来完成淡入淡出过渡的连接？

原文

I have a piece of code that concats videos from a file list. It works perfectly.

ffmpeg -f concat -safe 0 -i file_list.txt -c copy mergedVideo.avi

However, I want to add a black fade transition between each video. I found this code snippet that apparently does this, but it requires you to input each file by hand.

ffmpeg -i in.mp4 -i main.mp4 -i out.mp4 -filter_complex \
  "[0:v]fade=type=out:duration=2:start_time=28,setpts=PTS-STARTPTS[v0]; \
   [1:v]fade=type=in:duration=2,fade=type=out:duration=2:start_time=28,setpts=PTS-STARTPTS[v1]; \
   [2:v]fade=type=in:duration=2,setpts=PTS-STARTPTS[v2]; \
   [v0][0:a][v1][1:a][v2][2:a]concat=n=3:v=1:a=1[v][a]" \
  -map "[v]" -map "[a]" output.mp4

I want to be able to read all the video files from a txt file as I have hundreds of videos. How do I combine these two snippets, or is there a better way to accomplish the concat with fade transitions?

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