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mkvmerge：如何合并两个视频，其中一个没有音频？

tag-icon • tag-icon video-conversion matroska
mkvmerge：如何合并两个视频，其中一个没有音频？

我有两个视频，一个没有音频（第二个）。尝试合并它们时出现此错误：

mkvmerge concat1.webm +concat2.webm -o output.webm
mkvmerge v5.8.0 ('No Sleep / Pillow') built on Oct 19 2012 13:07:37
Automatically enabling WebM compliance mode due to output file name extension.
'concat1.webm': Using the demultiplexer for the format 'Matroska'.
concat2.webm': Using the demultiplexer for the format 'Matroska'.
'concat1.webm' track 0: Using the output module for the format 'VP8'.
concat2.webm' track 0: Using the output module for the format 'VP8'.
concat2.webm' track 1: Using the output module for the format 'Vorbis'.
No append mapping was given for the file no. 1 (concat2.webm'). A default mapping of 1:0:0:0,1:1:0:1 will be used instead. Please keep that in mind if mkvmerge aborts with an error message regarding invalid '--append-to' options.
Error: The file no. 0 ('concat1.webm') does not contain a track with the ID 1, or that track is not to be copied. Therefore no track can be appended to it. The argument for '--append-to' was invalid.

有没有办法指示mkvmerge简单地延长第一个音轨？

答案1

据我所知，您无法mkvmerge独自完成此操作。当我遇到此问题时，我曾经ffmpeg添加静音音频（具有匹配的采样率、通道数和每样本位数）。以下示例将 48 kHz 采样率的静音单声道音频添加到视频中没有再压缩。

ffmpeg -i in.mkv -f lavfi -i "aevalsrc=0::s=48000" -shortest -c:v copy out.mkv

也可以看看：

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