FFMPEG：无限循环多个视频

我有一个有趣的设置。我有四个视频，都是相同的持续时间，相同的帧速率，并有相同的PTS时间戳。我希望将这四个视频流传输到RTMP服务器，但保持同步，以便在流之间切换的人不会在时间上向前或向后跳跃，而是从停止的地方开始

以下是我当前使用的命令：

ffmpeg \
    -re -stream_loop -1 -fflags +genpts -i 01.mp4 \
    -re -stream_loop -1 -fflags +genpts -i 02.mp4 \
    -re -stream_loop -1 -fflags +genpts -i 03.mp4 \
    -re -stream_loop -1 -fflags +genpts -i 04.mp4 \
    -map 0:v -map 0:a \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/01 \
    -map 1:v -map 1:a \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/02 \
    -map 2:v -map 2:a \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/03 \
    -map 3:v -map 3:a \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/04

此命令正确地同步流并广播所有四个流，但视频结束时流也会同步。由于

-stream\u loop-1

的原因，我希望视频能够无限期地循环。这是流终止时对标准输出的输出：

[flv @ 0x2392d40] Failed to update header with correct duration.
[flv @ 0x2392d40] Failed to update header with correct filesize.
[flv @ 0x229b980] Failed to update header with correct duration.
[flv @ 0x229b980] Failed to update header with correct filesize.
[flv @ 0x22f3bc0] Failed to update header with correct duration.
[flv @ 0x22f3bc0] Failed to update header with correct filesize.
[flv @ 0x23a4240] Failed to update header with correct duration.
[flv @ 0x23a4240] Failed to update header with correct filesize.
[libx264 @ 0x25ebd00] frame I:236   Avg QP:29.17  size: 20892
[libx264 @ 0x25ebd00] frame P:5412  Avg QP:32.33  size:  1892
[libx264 @ 0x25ebd00] mb I  I16..4: 100.0%  0.0%  0.0%
[libx264 @ 0x25ebd00] mb P  I16..4:  0.2%  0.0%  0.0%  P16..4: 18.5%  0.0%  0.0%  0.0%  0.0%    skip:81.3%
[libx264 @ 0x25ebd00] final ratefactor: 31.62
[libx264 @ 0x25ebd00] coded y,uvDC,uvAC intra: 68.8% 62.8% 34.6% inter: 8.8% 1.8% 0.0%
[libx264 @ 0x25ebd00] i16 v,h,dc,p: 38% 25% 19% 18%
[libx264 @ 0x25ebd00] i8c dc,h,v,p: 40% 22% 27% 11%
[libx264 @ 0x25ebd00] kb/s:515.11
[libspeex @ 0x2537580] 1 frames left in the queue on closing
[libx264 @ 0x2531d00] frame I:236   Avg QP:31.85  size: 15843
[libx264 @ 0x2531d00] frame P:5412  Avg QP:34.95  size:  2086
[libx264 @ 0x2531d00] mb I  I16..4: 100.0%  0.0%  0.0%
[libx264 @ 0x2531d00] mb P  I16..4:  2.8%  0.0%  0.0%  P16..4: 37.8%  0.0%  0.0%  0.0%  0.0%    skip:59.4%
[libx264 @ 0x2531d00] final ratefactor: 32.38
[libx264 @ 0x2531d00] coded y,uvDC,uvAC intra: 48.4% 40.8% 13.5% inter: 12.1% 4.0% 0.0%
[libx264 @ 0x2531d00] i16 v,h,dc,p: 41% 21% 26% 13%
[libx264 @ 0x2531d00] i8c dc,h,v,p: 48% 20% 24%  8%
[libx264 @ 0x2531d00] kb/s:510.33
[libspeex @ 0x2533080] 1 frames left in the queue on closing
[libx264 @ 0x22da600] frame I:236   Avg QP:26.11  size: 13705
[libx264 @ 0x22da600] frame P:5412  Avg QP:29.17  size:  2185
[libx264 @ 0x22da600] mb I  I16..4: 100.0%  0.0%  0.0%
[libx264 @ 0x22da600] mb P  I16..4:  4.5%  0.0%  0.0%  P16..4: 35.2%  0.0%  0.0%  0.0%  0.0%    skip:60.3%
[libx264 @ 0x22da600] final ratefactor: 28.44
[libx264 @ 0x22da600] coded y,uvDC,uvAC intra: 37.1% 40.1% 10.4% inter: 12.3% 6.2% 0.1%
[libx264 @ 0x22da600] i16 v,h,dc,p: 40% 21% 22% 17%
[libx264 @ 0x22da600] i8c dc,h,v,p: 43% 18% 28% 11%
[libx264 @ 0x22da600] kb/s:511.43
[libspeex @ 0x22db080] 1 frames left in the queue on closing
[libx264 @ 0x22d7a00] frame I:236   Avg QP:30.31  size: 13811
[libx264 @ 0x22d7a00] frame P:5412  Avg QP:33.28  size:  2209
[libx264 @ 0x22d7a00] mb I  I16..4: 100.0%  0.0%  0.0%
[libx264 @ 0x22d7a00] mb P  I16..4:  5.4%  0.0%  0.0%  P16..4: 37.4%  0.0%  0.0%  0.0%  0.0%    skip:57.2%
[libx264 @ 0x22d7a00] final ratefactor: 31.52
[libx264 @ 0x22d7a00] coded y,uvDC,uvAC intra: 37.9% 36.7% 9.5% inter: 11.4% 5.0% 0.1%
[libx264 @ 0x22d7a00] i16 v,h,dc,p: 41% 23% 21% 16%
[libx264 @ 0x22d7a00] i8c dc,h,v,p: 45% 19% 27%  9%
[libx264 @ 0x22d7a00] kb/s:516.78
[libspeex @ 0x22d8d80] 1 frames left in the queue on closing

我的FFMPEG版本：

$ ffmpeg -version
ffmpeg version N-90065-g8a8d0b3 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.5) 20160609
configuration: --prefix=/home/sbarnett/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/sbarnett/ffmpeg_build/include --extra-ldflags=-L/home/sbarnett/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/sbarnett/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libspeex --enable-nonfree
libavutil      56.  7.101 / 56.  7.101
libavcodec     58. 11.101 / 58. 11.101
libavformat    58.  9.100 / 58.  9.100
libavdevice    58.  1.100 / 58.  1.100
libavfilter     7. 12.100 /  7. 12.100
libswscale      5.  0.101 /  5.  0.101
libswresample   3.  0.101 /  3.  0.101
libpostproc    55.  0.100 / 55.  0.100

如何让视频无限循环？为什么

-stream\u loop-1

不工作

更新（使用新错误编辑） 按照@Gyan的建议，我尝试将

filter\u complex

与电影过滤器一起使用，但我可能做得不正确：

ffmpeg \
    -stream_loop -1 \
    -re -i 01.mp4 \
    -re -i 02.mp4 \
    -re -i 03.mp4 \
    -re -i 04.mp4 \
    -filter_complex \
        "movie=01.mp4:loop=0[v1];[v1]setpts=N/FRAME_RATE/TB[v1];
         amovie=01.mp4:loop=0[a1];[a1]asetpts=N/SR/TB[a1];
         movie=02.mp4:loop=0[v2];[v2]setpts=N/FRAME_RATE/TB[v2];
         amovie=02.mp4:loop=0[a2];[a2]asetpts=N/SR/TB[a2];
         movie=03.mp4:loop=0[v3];[v3]setpts=N/FRAME_RATE/TB[v3];
         amovie=03.mp4:loop=0[a3];[a3]asetpts=N/SR/TB[a3];
         movie=04.mp4:loop=0[v4];[v4]setpts=N/FRAME_RATE/TB[v4];
         amovie=04.mp4:loop=0[a4];[a4]asetpts=N/SR/TB[a4]" \
    -map "[v1]" -map "[a1]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/01 \
    -map "[v2]" -map "[a2]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/02 \
    -map "[v3]" -map "[a3]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/03 \
    -map "[v4]" -map "[a4]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/04

这引发了以下错误：

[libspeex @ 0x23f4d80] nb_samples (325) != frame_size (320) (avcodec_encode_audio2)

---

尚未为实现流_循环；你必须使用电影过滤器

ffmpeg \
    -filter_complex \
        "movie=01.mp4:loop=0,setpts=N/FRAME_RATE/TB,realtime[v1];
         amovie=01.mp4:loop=0,asetpts=N/SR/TB,arealtime[a1];
         movie=02.mp4:loop=0,setpts=N/FRAME_RATE/TB,realtime[v2];
         amovie=02.mp4:loop=0,asetpts=N/SR/TB,arealtime[a2];
         movie=03.mp4:loop=0,setpts=N/FRAME_RATE/TB,realtime[v3];
         amovie=03.mp4:loop=0,asetpts=N/SR/TB,arealtime[a3];
         movie=04.mp4:loop=0,setpts=N/FRAME_RATE/TB,realtime[v4];
         amovie=04.mp4:loop=0,asetpts=N/SR/TB,arealtime[a4]" \
    -map "[v1]" -map "[a1]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/01 \
    -map "[v2]" -map "[a2]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/02 \
    -map "[v3]" -map "[a3]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/03 \
    -map "[v4]" -map "[a4]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/04

---

尚未为实现流_循环；你必须使用电影过滤器

ffmpeg \
    -filter_complex \
        "movie=01.mp4:loop=0,setpts=N/FRAME_RATE/TB,realtime[v1];
         amovie=01.mp4:loop=0,asetpts=N/SR/TB,arealtime[a1];
         movie=02.mp4:loop=0,setpts=N/FRAME_RATE/TB,realtime[v2];
         amovie=02.mp4:loop=0,asetpts=N/SR/TB,arealtime[a2];
         movie=03.mp4:loop=0,setpts=N/FRAME_RATE/TB,realtime[v3];
         amovie=03.mp4:loop=0,asetpts=N/SR/TB,arealtime[a3];
         movie=04.mp4:loop=0,setpts=N/FRAME_RATE/TB,realtime[v4];
         amovie=04.mp4:loop=0,asetpts=N/SR/TB,arealtime[a4]" \
    -map "[v1]" -map "[a1]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/01 \
    -map "[v2]" -map "[a2]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/02 \
    -map "[v3]" -map "[a3]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/03 \
    -map "[v4]" -map "[a4]" \
        -c:a speex -ar 16000 -ac 1 \
        -c:v libx264 -preset ultrafast \
        -b:v 500k -b:a 32k \
        -f flv rtmp://output/04

---

谢谢你的指导。不幸的是，电影筛选器也出现了一个错误（这一个更有意义）：

[Parsed_movie_0@0x27b5240]当前不支持包含多个流的循环[AVFilterGraph@0x27b5140]使用args“01”初始化筛选器“movie”时出错。mp4:s=dv+da:Loop=0初始化复杂筛选器时出错。尚未在FFmpeg中实现，欢迎使用补丁

更改为单独的源过滤器我现在遇到了不同的错误。这可能只是因为我不正确地使用了

filter\u complex

参数。我将使用添加的新commandFull命令更新我的问题。您可能必须切换到地图参数的单引号。正如您更新您的帖子一样，我已经明白了这一点（我在谷歌上搜索并找到了如何正确使用带有过滤器的地图）——但是还有另一个错误：（

nb_samples（325）！=帧大小（320）

--这是一个libspeex错误，因此我可能只能切换到aac或其他方式来解决它。不幸的是，电影过滤器也给出了一个错误（这一个更有意义）：

[Parsed_movie_0@0x27b5240]当前不支持多个流的循环[AVFilterGraph@0x27b5140]初始化带有args“01”的筛选器“movie”时出错。mp4:s=dv+da:loop=0初始化复杂筛选器时出错。FFmpeg中尚未实现，补丁程序将

更改为单独的源筛选器。我现在遇到了不同的错误。可能是我错误地使用了

filter\u complex

参数。我将用新的c更新我的问题添加了ommandFull命令。您可能必须切换到地图参数的单引号。正如您更新您的帖子一样，我已经弄明白了这一点（我在谷歌上搜索并找到了如何正确使用带有过滤器的地图）-但是还有另一个错误：（

nb_samples（325）！=帧大小（320）

——这是一个libspeex错误，因此我可以切换到aac或其他解决方法