ffmpeg:组合/合并多个 mp4 视频不起作用，输出仅包含第一个视频

Question

这是我用来组合多个视频的命令:

ffmpeg -i 75_540_38HQ2.mp4 -i 76_70_20.mp4 -i 76_173_80.mp4 -i 81_186_35.mp4 -vcodec copy -acodec copy Mux1.mp4

生成的 Mux1.mp4 不包含所有视频。仅第一个视频 (75_540_38HQ2.mp4)。源视频和生成视频的文件大小如下(如您所见，生成的视频比第一个视频稍大):

$ ls -lh-rw-r--r-- 1 dbaker dbaker  42M 2011-03-24 11:59 75_540_38HQ2.mp4-rw-r--r-- 1 dbaker dbaker 236M 2011-03-24 12:09 76_173_80.mp4-rw-r--r-- 1 dbaker dbaker  26M 2011-03-24 12:05 76_70_20.mp4-rw-r--r-- 1 dbaker dbaker  54M 2011-03-24 12:15 81_186_35.mp4-rw-r--r-- 1 dbaker dbaker  44M 2011-03-24 14:48 Mux1.mp4

这是 ffmpeg 命令的输出。对我来说，它看起来不错，显示了多个源输入和单个输出。

FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers  built on Mar 21 2011 18:05:32 with gcc 4.4.5  configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab  libavutil     50.36. 0 / 50.36. 0  libavcore      0.16. 1 /  0.16. 1  libavcodec    52.108. 0 / 52.108. 0  libavformat   52.93. 0 / 52.93. 0  libavdevice   52. 2. 3 / 52. 2. 3  libavfilter    1.74. 0 /  1.74. 0  libswscale     0.12. 0 /  0.12. 0  libpostproc   51. 2. 0 / 51. 2. 0Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '75_540_38HQ2.mp4':  Metadata:    major_brand     : isom    minor_version   : 512    compatible_brands: isomiso2avc1mp41    creation_time   : 1970-01-01 00:00:00    encoder         : Lavf52.93.0  Duration: 00:00:29.99, start: 0.000000, bitrate: 11517 kb/s    Stream #0.0(eng): Video: h264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], 11575 kb/s, 29.94 fps, 29.97 tbr, 30k tbn, 59.94 tbc    Metadata:      creation_time   : 1970-01-01 00:00:00    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 127 kb/s    Metadata:      creation_time   : 1970-01-01 00:00:00Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '76_70_20.mp4':  Metadata:    major_brand     : isom    minor_version   : 512    compatible_brands: isomiso2avc1mp41    creation_time   : 1970-01-01 00:00:00    encoder         : Lavf52.93.0  Duration: 00:00:19.98, start: 0.000000, bitrate: 10901 kb/s    Stream #1.0(eng): Video: h264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], 10804 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc    Metadata:      creation_time   : 1970-01-01 00:00:00    Stream #1.1(eng): Audio: aac, 48000 Hz, stereo, s16, 128 kb/s    Metadata:      creation_time   : 1970-01-01 00:00:00Input #2, mov,mp4,m4a,3gp,3g2,mj2, from '76_173_80.mp4':  Metadata:    major_brand     : isom    minor_version   : 512    compatible_brands: isomiso2avc1mp41    creation_time   : 1970-01-01 00:00:00    encoder         : Lavf52.93.0  Duration: 00:03:09.99, start: 0.000000, bitrate: 10393 kb/s    Stream #2.0(eng): Video: h264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], 10321 kb/s, 29.96 fps, 29.97 tbr, 30k tbn, 59.94 tbc    Metadata:      creation_time   : 1970-01-01 00:00:00    Stream #2.1(eng): Audio: aac, 48000 Hz, stereo, s16, 128 kb/s    Metadata:      creation_time   : 1970-01-01 00:00:00Seems stream 0 codec frame rate differs from container frame rate: 119.88 (120000/1001) -> 30000.00 (30000/1)Input #3, mov,mp4,m4a,3gp,3g2,mj2, from '81_186_35.mp4':  Metadata:    major_brand     : isom    minor_version   : 512    compatible_brands: isomiso2avc1mp41    creation_time   : 1970-01-01 00:00:00    encoder         : Lavf52.93.0  Duration: 00:00:35.00, start: 0.000000, bitrate: 12700 kb/s    Stream #3.0(eng): Video: h264, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 12620 kb/s, 59.91 fps, 30k tbr, 60k tbn, 119.88 tbc    Metadata:      creation_time   : 1970-01-01 00:00:00    Stream #3.1(eng): Audio: aac, 48000 Hz, stereo, s16, 128 kb/s    Metadata:      creation_time   : 1970-01-01 00:00:00Output #0, mp4, to 'Mux1.mp4':  Metadata:    major_brand     : isom    minor_version   : 512    compatible_brands: isomiso2avc1mp41    creation_time   : 1970-01-01 00:00:00    encoder         : Lavf52.93.0    Stream #0.0(eng): Video: libx264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], q=2-31, 11575 kb/s, 30k tbn, 29.97 tbc    Metadata:      creation_time   : 1970-01-01 00:00:00    Stream #0.1(eng): Audio: libfaac, 48000 Hz, stereo, 128 kb/s    Metadata:      creation_time   : 1970-01-01 00:00:00Stream mapping:  Stream #0.0 -> #0.0  Stream #2.1 -> #0.1Press [q] to stop encodingframe=  883 fps=632 q=-1.0 Lsize=   44730kB time=29.40 bitrate=12465.1kbits/s    video:41678kB audio:2969kB global headers:0kB muxing overhead 0.184548%

我在这里做了一些愚蠢的事情吗？

源视频来自摄像机，是使用ffmpeg -i bigfile.mp4 -ss 20 -t 10 -vcodec copy等拍摄的小片段。

非常感谢!!戴夫

<小时/>

编辑:无法解决它，所以我只使用 avidemux GUI 工具。看来加个MP4就好了。

一定是 MP4 的问题，或者只是 gopro 相机上的问题。

Answer 1

假设您想连接电影，可以使用以下命令:

ffmpeg -f concat -i inputs.txt -vcodec copy -acodec copy Mux1.mp4

inputs.txt 中包含以下文本:

file 75_540_38HQ2.mp4 
file 76_70_20.mp4 
file 76_173_80.mp4
file 81_186_35.mp4

注意:某些发行版(如 Ubuntu)的存储库中没有 ffmpeg，而是将 ffmpeg 定义为 avconv 的别名。这不适用于 avconv，因此在这种情况下您必须自己编译 ffmpeg。您可以通过运行 ffmpeg 并检查第一个输出行是否以“the FFmpeg Developers”结尾来检查您是否拥有真正的 ffmpeg。