使用FFmpeg将一个视频处理为多个输出会导致最后一个输出中没有音频
[英]Manipulating one video into multi outputs with FFmpeg results in no audio in the last output
问题描述
Using FFmpeg, I'm trying to do some filtering operations on one input video to scale it (out1), scale and trim it (out2). 
使用FFmpeg，我试图对一个输入视频进行一些过滤操作以缩放它（out1），缩放和修剪它（out2）。 This is the command I'm using: 这是我正在使用的命令：
ffmpeg -y \
-i "Robotica_1080.mkv" \
-filter_complex "[0:v]split=2[v1][v2]; \
[v1]scale=640:360,setpts=PTS-STARTPTS[vout1]; \
[v2]trim=10:15,scale=640:360,setpts=PTS-STARTPTS[vout2]; \
[0:a]asplit=2[a1][a2]; \
[a1]anull,asetpts=PTS-STARTPTS[aout1]; \
[a2]atrim=10:15,asetpts=PTS-STARTPTS[aout2]; \
[vout1][aout1]concat=n=1:v=1:a=1[out1]; \
[vout2][aout2]concat=n=1:v=1:a=1[out2]" \
-map "[out1]" "1.mp4" \
-map "[out2]" "2.mp4"
1.mp4 is ok while 2.mp4 lasts 5 seconds as expected but without audio at all (the QuickTime inspector doesn't write the audio codec) 1.mp4正常，而2.mp4按预期持续5秒但完全没有音频（QuickTime检查员不写音频编解码器）
I tried to remove the trim/atrim filters, so the filter_complex parameter looked like this: 我试图删除trim / atrim过滤器，所以filter_complex参数看起来像这样：
-filter_complex "[0:v]split=2[v1][v2]; \
[v1]scale=640:360[vout1]; \
[v2]scale=640:360[vout2]; \
[0:a]asplit=2[a1][a2]; \
[a1]anull[aout1]; \
[a2]anull[aout2]; \
[vout1][aout1]concat=n=1:v=1:a=1[out1]; \
[vout2][aout2]concat=n=1:v=1:a=1[out2]" \
but still no audio on 2.mp4 2.mp4上仍然没有音频
Can anyone give me a hint? 任何人都可以给我一个提示吗？
--EDIT-- This is the output from first ffmpeg command: --EDIT--这是第一个ffmpeg命令的输出：
Mac-mini:~ Luca$ /Applications/XAMPP/xamppfiles/htdocs/MediaGallery/ffmpeg/ffmpeg -y \
> -i "/Users/Luca/Desktop/_TEMP UPLOAD/Video/Robotica_1080.mkv" \
> -filter_complex "[0:v]split=2[v1][v2]; \
> [v1]scale=640:360,setpts=PTS-STARTPTS[vout1]; \
> [v2]trim=10:15,scale=640:360,setpts=PTS-STARTPTS[vout2]; \
> [0:a]asplit=2[a1][a2]; \
> [a1]anull,asetpts=PTS-STARTPTS[aout1]; \
> [a2]atrim=10:15,asetpts=PTS-STARTPTS[aout2]; \
> [vout1][aout1]concat=n=1:v=1:a=1[out1]; \
> [vout2][aout2]concat=n=1:v=1:a=1[out2]" \
> -map "[out1]" "/Users/Luca/Downloads/1.mp4" \
> -map "[out2]" "/Users/Luca/Downloads/2.mp4"
ffmpeg version N-72460-gc5a07f1-tessus Copyright (c) 2000-2015 the FFmpeg developers
built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --as=yasm --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzmq --enable-version3 --disable-ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb
libavutil 54. 23.101 / 54. 23.101
libavcodec 56. 40.100 / 56. 40.100
libavformat 56. 33.101 / 56. 33.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, matroska,webm, from '/Users/Luca/Desktop/_TEMP UPLOAD/Video/Robotica_1080.mkv':
Metadata:
encoder : libDivXMediaFormat 4.0.0.0578
Duration: 00:00:20.04, start: 0.000000, bitrate: 4282 kb/s
Stream #0:0(eng): Video: hevc (Main), yuvj420p(pc), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 1k tbn, 25 tbc (default)
Stream #0:1(en): Audio: aac (LC), 44100 Hz, stereo, fltp (default)
[swscaler @ 0x7fb4d181c400] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x7fb4d185be00] deprecated pixel format used, make sure you did set range correctly
No pixel format specified, yuvj420p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
Last message repeated 1 times
[libx264 @ 0x7fb4d183f400] using SAR=1/1
[libx264 @ 0x7fb4d183f400] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
[libx264 @ 0x7fb4d183f400] profile High, level 3.0
[libx264 @ 0x7fb4d183f400] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[libx264 @ 0x7fb4d184e400] using SAR=1/1
[libx264 @ 0x7fb4d184e400] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
[libx264 @ 0x7fb4d184e400] profile High, level 3.0
[libx264 @ 0x7fb4d184e400] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '/Users/Luca/Downloads/1.mp4':
Metadata:
encoder : Lavf56.33.101
Stream #0:0: Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s (default)
Metadata:
encoder : Lavc56.40.100 libvo_aacenc
Stream #0:1: Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s
Metadata:
encoder : Lavc56.40.100 libvo_aacenc
Stream #0:2: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj420p(pc), 640x360 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc56.40.100 libx264
Output #1, mp4, to '/Users/Luca/Downloads/2.mp4':
Metadata:
encoder : Lavf56.33.101
Stream #1:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj420p(pc), 640x360 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc56.40.100 libx264
Stream mapping:
Stream #0:0 (hevc) -> split
Stream #0:1 (aac) -> asplit
concat:out:a0 -> Stream #0:0 (libvo_aacenc)
concat:out:a0 -> Stream #0:1 (libvo_aacenc)
concat:out:v0 -> Stream #0:2 (libx264)
concat:out:v0 -> Stream #1:0 (libx264)
Press [q] to stop, [?] for help
frame= 501 fps= 26 q=-1.0 Lq=-1.0 size= 1512kB time=00:00:19.97 bitrate= 620.1kbits/s
video:1385kB audio:392kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[libx264 @ 0x7fb4d183f400] frame I:3 Avg QP:19.30 size: 3879
[libx264 @ 0x7fb4d183f400] frame P:321 Avg QP:24.53 size: 3024
[libx264 @ 0x7fb4d183f400] frame B:177 Avg QP:26.20 size: 825
[libx264 @ 0x7fb4d183f400] consecutive B-frames: 40.7% 34.7% 5.4% 19.2%
[libx264 @ 0x7fb4d183f400] mb I I16..4: 24.8% 65.9% 9.3%
[libx264 @ 0x7fb4d183f400] mb P I16..4: 7.5% 10.5% 2.5% P16..4: 22.9% 7.4% 2.7% 0.0% 0.0% skip:46.5%
[libx264 @ 0x7fb4d183f400] mb B I16..4: 0.4% 0.6% 0.3% B16..8: 17.2% 2.9% 0.7% direct: 0.9% skip:77.1% L0:37.2% L1:51.8% BI:11.0%
[libx264 @ 0x7fb4d183f400] 8x8 transform intra:51.6% inter:69.2%
[libx264 @ 0x7fb4d183f400] coded y,uvDC,uvAC intra: 40.2% 24.2% 1.1% inter: 8.5% 4.0% 0.0%
[libx264 @ 0x7fb4d183f400] i16 v,h,dc,p: 9% 65% 1% 25%
[libx264 @ 0x7fb4d183f400] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 29% 16% 4% 6% 6% 7% 6% 6%
[libx264 @ 0x7fb4d183f400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 34% 12% 3% 7% 6% 7% 4% 4%
[libx264 @ 0x7fb4d183f400] i8c dc,h,v,p: 63% 25% 11% 1%
[libx264 @ 0x7fb4d183f400] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7fb4d183f400] ref P L0: 69.3% 11.5% 12.5% 6.7%
[libx264 @ 0x7fb4d183f400] ref B L0: 82.4% 16.7% 0.8%
[libx264 @ 0x7fb4d183f400] ref B L1: 98.6% 1.4%
[libx264 @ 0x7fb4d183f400] kb/s:450.44
[libx264 @ 0x7fb4d184e400] frame I:1 Avg QP:22.23 size: 6699
[libx264 @ 0x7fb4d184e400] frame P:78 Avg QP:24.94 size: 2998
[libx264 @ 0x7fb4d184e400] frame B:46 Avg QP:27.93 size: 1036
[libx264 @ 0x7fb4d184e400] consecutive B-frames: 32.0% 56.0% 2.4% 9.6%
[libx264 @ 0x7fb4d184e400] mb I I16..4: 53.5% 26.6% 19.9%
[libx264 @ 0x7fb4d184e400] mb P I16..4: 9.8% 7.6% 3.1% P16..4: 25.0% 8.0% 2.8% 0.0% 0.0% skip:43.8%
[libx264 @ 0x7fb4d184e400] mb B I16..4: 0.8% 0.5% 0.4% B16..8: 22.4% 3.5% 0.8% direct: 1.1% skip:70.4% L0:41.1% L1:48.0% BI:10.9%
[libx264 @ 0x7fb4d184e400] 8x8 transform intra:36.1% inter:66.1%
[libx264 @ 0x7fb4d184e400] coded y,uvDC,uvAC intra: 33.5% 24.6% 1.8% inter: 8.5% 3.8% 0.0%
[libx264 @ 0x7fb4d184e400] i16 v,h,dc,p: 4% 82% 1% 13%
[libx264 @ 0x7fb4d184e400] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 40% 18% 3% 4% 4% 7% 3% 5%
[libx264 @ 0x7fb4d184e400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 40% 13% 3% 5% 5% 6% 3% 4%
[libx264 @ 0x7fb4d184e400] i8c dc,h,v,p: 54% 36% 8% 2%
[libx264 @ 0x7fb4d184e400] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7fb4d184e400] ref P L0: 60.6% 10.5% 17.5% 11.4%
[libx264 @ 0x7fb4d184e400] ref B L0: 77.6% 22.0% 0.4%
[libx264 @ 0x7fb4d184e400] ref B L1: 99.1% 0.9%
[libx264 @ 0x7fb4d184e400] kb/s:461.15
1 个解决方案
解决方案1
3 已采纳 2015-10-27 07:11:00
In concat filter, "n" defines the number of segments. 在concat过滤器中，“n”定义段的数量。 so n must be "2" in your filter, like this : 所以你的过滤器中的n必须是“2”，如下所示：
ffmpeg -y \
-i "Robotica_1080.mkv" \
-filter_complex "[0:v]split=2[v1][v2]; \
[v1]scale=640:360,setpts=PTS-STARTPTS[vout1]; \
[v2]trim=10:15,scale=640:360,setpts=PTS-STARTPTS[vout2]; \
[0:a]asplit=2[a1][a2]; \
[a1]anull,asetpts=PTS-STARTPTS[aout1]; \
[a2]atrim=10:15,asetpts=PTS-STARTPTS[aout2]; \
[vout1][aout1]concat=n=2:v=1:a=1[vout1][aout1]; \
[vout2][aout2]concat=n=2:v=1:a=1[vout2][aout2]" \
-map [vout1] -map [aout1] "1.mp4" \
-map [vout2] -map [aout2] "2.mp4"
or you can just map the audio in following command : 或者你可以在以下命令中映射音频：
ffmpeg -y \
-i "Robotica_1080.mkv" \
-filter_complex "[0:v]split=2[v1][v2]; \
[v1]scale=640:360,setpts=PTS-STARTPTS[vout1]; \
[v2]trim=10:15,scale=640:360,setpts=PTS-STARTPTS[vout2]; \
[0:a]asplit=2[a1][a2]; \
[a1]anull,asetpts=PTS-STARTPTS[aout1]; \
[a2]atrim=10:15,asetpts=PTS-STARTPTS[aout2]"
-map [vout1] -map [aout1] "1.mp4" \
-map [vout2] -map [aout2] "2.mp4"
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