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• How to concat videos with FFMPEG without a black frame in the middle

  21 juillet 2020, par david k

  I need to join two videos together programmatically, and FFMPEG seems to be working perfectly except it leaves a single black frame between the two joined videos.

  


  Based on this post, I'm guessing it's because the video and audio streams aren't exactly the same length (not sure why). Since I'm seeing a black flash, I'm guessing that the audio is slightly longer than the video, but I can't figure out how to remedy that. I'm fine losing a tiny piece of the audio at the end of the file.

  


  Can anyone help me "trim" the end of my audio stream so that it matches my video stream ? I need to be able to do this for many files, so I can't just hard-code a value into my command.

  


  I've attempted both of the methods that FFMPEG provides to concat, and both of them have this issue. I'd be fine with either approach, if I can get rid of the black frame.

  


  Transcode :

  


  ffmpeg -i video1.mp4 -i video2.mp4 -filter_complex \
  "[0:v][0:a][1:v][1:a] concat=n=2:v=1:a=1 [outv] [outa]" \
  -map "[outv]" -map "[outa]" output.mp4


  


  Re-wrap :

  


  ffmpeg -f concat -i files.txt -c copy output.mp4


  


  Here is the output of ffmpeg -i video1.mp4 -i video2.mp4 :

  


  ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.16)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_1 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.0.1.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.0.1.jdk/Contents/Home/include/darwin -fno-stack-check' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video1.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2020-07-20T20:43:05.000000Z
  Duration: 00:00:09.88, start: 0.000000, bitrate: 1330 kb/s
    Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 32000 Hz, mono, fltp, 53 kb/s (default)
    Metadata:
      creation_time   : 2020-07-20T20:43:05.000000Z
      handler_name    : AAC audio
    Stream #0:1(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 1274 kb/s, 25 fps, 25 tbr, 30k tbn, 60k tbc (default)
    Metadata:
      creation_time   : 2020-07-20T20:43:05.000000Z
      handler_name    : H.264/AVC video
      encoder         : AVC Coding
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'video2.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2020-07-20T20:43:06.000000Z
  Duration: 00:00:11.68, start: 0.000000, bitrate: 1346 kb/s
    Stream #1:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 32000 Hz, mono, fltp, 53 kb/s (default)
    Metadata:
      creation_time   : 2020-07-20T20:43:06.000000Z
      handler_name    : AAC audio
    Stream #1:1(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 1289 kb/s, 25 fps, 25 tbr, 30k tbn, 60k tbc (default)
    Metadata:
      creation_time   : 2020-07-20T20:43:06.000000Z
      handler_name    : H.264/AVC video
      encoder         : AVC Coding
At least one output file must be specified


  


• ffmpeg Invalid stream specifier : si

  1er décembre 2020, par Abhishek Sharma

  I am trying to run the following command :

  


      -i "2020_11_30_03_37_37.mp4" -i "2020_11_30_03_37_44.jpg" -f lavfi -t 6.016 -i anullsrc -filter_complex "[0:v]crop=544:544:0:208,boxblur=luma_radius=10:chroma_radius=10:luma_power=1,scale=1080:1080[bg];[0:v]scale=612:1080[fg];[bg][fg]overlay=234:0:shortest=1[si];[si]trim=0:1,setpts=(PTS-STARTPTS)*2[video0];[0:a]atrim=0:1,asetpts=PTS-STARTPTS,atempo=0.5[audio0];[si]trim=1:5.016,setpts=(PTS-STARTPTS)*1[video1];[0:a]atrim=1:5.016,asetpts=PTS-STARTPTS,atempo=1[audio1];[video0][audio0][video1][audio1]concat=n=2:v=1:a=1[mv];[1:v]scale=428:-1[sticker1];[mv][sticker1]overlay=x=0:y=0:enable='between(t,0,1)'" "2020_11_30_03_37_50.mp4"


  


  but FFmpeg throwing the following error :

  


  Invalid stream specifier: si.


  


  but I already specified this stream in command. unable to understand what's wrong

  


  here is the log

  


  C:\Users\abhis\AppData\Local\Packages\64815ZMobileApps.VideoDownloaderforYouTubeDownload_61cxy7b35vdsg\TempState>ffmpeg -i "2020_11_30_03_37_37.mp4" -i "2020_11_30_03_37_44.jpg" -f lavfi -t 6.016 -i anullsrc -filter_complex "[0:v]crop=544:544:0:208,boxblur=luma_radius=10:chroma_radius=10:luma_power=1,scale=1080:1080[bg];[0:v]scale=612:1080[fg];[bg][fg]overlay=234:0:shortest=1[si];[si]trim=0:1,setpts=(PTS-STARTPTS)*2[video0];[0:a]atrim=0:1,asetpts=PTS-STARTPTS,atempo=0.5[audio0];[si]trim=1:5.016,setpts=(PTS-STARTPTS)*1[video1];[0:a]atrim=1:5.016,asetpts=PTS-STARTPTS,atempo=1[audio1];[video0][audio0][video1][audio1]concat=n=2:v=1:a=1[mv];[1:v]scale=428:-1[sticker1];[mv][sticker1]overlay=x=0:y=0:enable='between(t,0,1)'" "2020_11_30_03_37_50.mp4"
ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 10.2.1 (GCC) 20200726
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libgsm --enable-librav1e --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2020_11_30_03_37_37.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.45.100
  Duration: 00:00:05.02, start: 0.000000, bitrate: 2097 kb/s
    Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 544x960, 1997 kb/s, SAR 1:1 DAR 17:30, 30 fps, 30 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      handler_name    : VideoHandle
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 96 kb/s (default)
    Metadata:
      handler_name    : SoundHandle
Input #1, image2, from '2020_11_30_03_37_44.jpg':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 2416762 kb/s
    Stream #1:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 1280x854 [SAR 200:200 DAR 640:427], 25 tbr, 25 tbn, 25 tbc
Input #2, lavfi, from 'anullsrc':
  Duration: N/A, start: 0.000000, bitrate: 705 kb/s
    Stream #2:0: Audio: pcm_u8, 44100 Hz, stereo, u8, 705 kb/s
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000279fa82eb80] Invalid stream specifier: si.
    Last message repeated 1 times
Stream specifier 'si' in filtergraph description [0:v]crop=544:544:0:208,boxblur=luma_radius=10:chroma_radius=10:luma_power=1,scale=1080:1080[bg];[0:v]scale=612:1080[fg];[bg][fg]overlay=234:0:shortest=1[si];[si]trim=0:1,setpts=(PTS-STARTPTS)*2[video0];[0:a]atrim=0:1,asetpts=PTS-STARTPTS,atempo=0.5[audio0];[si]trim=1:5.016,setpts=(PTS-STARTPTS)*1[video1];[0:a]atrim=1:5.016,asetpts=PTS-STARTPTS,atempo=1[audio1];[video0][audio0][video1][audio1]concat=n=2:v=1:a=1[mv];[1:v]scale=428:-1[sticker1];[mv][sticker1]overlay=x=0:y=0:enable='between(t,0,1)' matches no streams.


  


• How to fix ffmpeg complex filters "Invalid stream specifier" [duplicate]

  15 mai 2019, par Chase

  This question already has an answer here :

  • FFmpeg filter_complex concat gives only first input on crop
    
    1 answer
    
  • Problems building Image slideshow with sliding transition using ffmpeg
    
    1 answer
    
  • ffmpeg : chain of multiple filter_complex, re-using intermediate output stream
    
    1 answer
    

  I’m attempting to scale and blur (sections of) a video with ffmpeg complex filters. This has actually been working in production for years.

  I’m now running a newer build of ffmpeg on Ubuntu 18.04 and getting an error relating to the filters where the same command works fine on Ubuntu 16.04’s ffmpeg against the same video.

  
  Specifically, I’m seeing the following error :

  mov,mp4,m4a,3gp,3g2,mj2 @ 0x56055a5902c0] Invalid stream specifier: vs0.
  
      Last message repeated 1 times
  
  Stream specifier 'vs0' in filtergraph description ... matches no streams.

  Has something about the complex filter API changed that would make this same input invalid in a newer version of ffmpeg ?

  ---

  The command in question is just running the following in a Bash terminal.

  ffmpeg -ss 60 -i ~/test.mp4 -y -filter_complex "[0:v]scale=-2:'min(320,ih)'[vs0];[vs0]crop=in_w/9:in_h/2:0:0,boxblur=5:1:cr=3:ar=3[b0];[vs0]crop=in_w/9:in_h/2:in_w-out_w:0,boxblur=5:1:cr=3:ar=3[b1];[vs0]crop=(in_w-2*in_w/9):in_h/20:in_w/9:0,boxblur=5:1:cr=3:ar=3[b2];[vs0][b0]overlay=0:0[ovr0];[ovr0][b1]overlay=main_w-overlay_w:0[ovr1];[ovr1][b2]overlay=main_w/9:0[vs1]" -map [vs1] -an -ac 2 -b:a 128k -acodec aac -b:v 1024k -r 30 -vcodec libx264 -t 300 -y -preset slow -movflags faststart -pix_fmt yuv420p -f mp4 ~/out.mp4

  If we break up the complex filter statement, it looks like :

  [0:v]scale=-2:'min(320,ih)'[vs0];
  
  [vs0]crop=in_w/9:in_h/2:0:0,boxblur=5:1:cr=3:ar=3[b0];
  
  [vs0]crop=in_w/9:in_h/2:in_w-out_w:0,boxblur=5:1:cr=3:ar=3[b1];
  
  [vs0]crop=(in_w-2*in_w/9):in_h/20:in_w/9:0,boxblur=5:1:cr=3:ar=3[b2];
  
  [vs0][b0]overlay=0:0[ovr0];[ovr0][b1]overlay=main_w-overlay_w:0[ovr1];
  
  [ovr1][b2]overlay=main_w/9:0[vs1]

  ---

  On ffmpeg version N-86980-g62b7553 (Ubuntu 16.04), everything works great as it has done for years.

  $ ffmpeg -ss 60 -i ~/test.mp4 -y -filter_complex "[0:v]scale=-2:'min(320,ih)'[vs0];[vs0]crop=in_w/9:in_h/2:0:0,boxblur=5:1:cr=3:ar=3[b0];[vs0]crop=in_w/9:in_h/2:in_w-out_w:0,boxblur=5:1:cr=3:ar=3[b1];[vs0]crop=(in_w-2*in_w/9):in_h/20:in_w/9:0,boxblur=5:1:cr=3:ar=3[b2];[vs0][b0]overlay=0:0[ovr0];[ovr0][b1]overlay=main_w-overlay_w:0[ovr1];[ovr1][b2]overlay=main_w/9:0[vs1]" -map [vs1] -an -ac 2 -b:a 128k -acodec aac -b:v 1024k -r 30 -vcodec libx264 -t 300 -y -preset slow -movflags faststart -pix_fmt yuv420p -f mp4 ~/out.mp4
  
  ffmpeg version N-86980-g62b7553 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
  
    configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-openssl --enable-nonfree
  
    libavutil      55. 73.100 / 55. 73.100
  
    libavcodec     57.102.100 / 57.102.100
  
    libavformat    57. 76.100 / 57. 76.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 98.100 /  6. 98.100
  
    libswscale      4.  7.102 /  4.  7.102
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/cmaier/test.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.76.100
  
    Duration: 00:10:00.00, start: 0.000000, bitrate: 1036 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 768x480, 1033 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Stream mapping:
  
    Stream #0:0 (h264) -> scale
  
    Stream #0:0 (h264) -> crop
  
    Stream #0:0 (h264) -> crop
  
    Stream #0:0 (h264) -> overlay:main
  
    overlay -> Stream #0:0 (libx264)
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x27b2ca0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x27b2ca0] profile High, level 3.1
  
  [libx264 @ 0x27b2ca0] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 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=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=1024 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to '/home/cmaier/out.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.76.100
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 768x480, q=-1--1, 1024 kb/s, 30 fps, 15360 tbn, 30 tbc (default)
  
      Metadata:
  
        encoder         : Lavc57.102.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/1024000 buffer size: 0 vbv_delay: -1
  
  [mp4 @ 0x27b5a60] Starting second pass: moving the moov atom to the beginning of the file3.9x    
  
  frame= 9000 fps=117 q=-1.0 Lsize=   37827kB time=00:04:59.90 bitrate=1033.3kbits/s speed= 3.9x    
  
  video:37721kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.282333%
  
  [libx264 @ 0x27b2ca0] frame I:36    Avg QP:15.21  size: 50944
  
  [libx264 @ 0x27b2ca0] frame P:2723  Avg QP:20.12  size:  9593
  
  [libx264 @ 0x27b2ca0] frame B:6241  Avg QP:24.23  size:  1710
  
  [libx264 @ 0x27b2ca0] consecutive B-frames:  3.6%  6.9% 14.5% 75.0%
  
  [libx264 @ 0x27b2ca0] mb I  I16..4: 17.3% 58.5% 24.2%
  
  [libx264 @ 0x27b2ca0] mb P  I16..4:  0.5%  4.4%  0.9%  P16..4: 31.1% 20.7% 12.1%  0.0%  0.0%    skip:30.3%
  
  [libx264 @ 0x27b2ca0] mb B  I16..4:  0.0%  0.3%  0.1%  B16..8: 28.9%  5.5%  1.1%  direct: 1.1%  skip:63.1%  L0:37.5% L1:52.6% BI: 9.9%
  
  [libx264 @ 0x27b2ca0] final ratefactor: 19.69
  
  [libx264 @ 0x27b2ca0] 8x8 transform intra:72.8% inter:68.3%
  
  [libx264 @ 0x27b2ca0] direct mvs  spatial:99.9% temporal:0.1%
  
  [libx264 @ 0x27b2ca0] coded y,uvDC,uvAC intra: 74.5% 73.0% 30.4% inter: 13.0% 10.7% 0.2%
  
  [libx264 @ 0x27b2ca0] i16 v,h,dc,p: 49% 30%  3% 17%
  
  [libx264 @ 0x27b2ca0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  7% 14% 11%  7% 11%  8% 19%  8% 15%
  
  [libx264 @ 0x27b2ca0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu:  9% 13%  5%  8% 14% 10% 17%  9% 16%
  
  [libx264 @ 0x27b2ca0] i8c dc,h,v,p: 42% 29% 15% 15%
  
  [libx264 @ 0x27b2ca0] Weighted P-Frames: Y:7.4% UV:2.9%
  
  [libx264 @ 0x27b2ca0] ref P L0: 59.2% 20.2% 11.5%  3.7%  4.3%  1.0%  0.1%
  
  [libx264 @ 0x27b2ca0] ref B L0: 87.5%  8.8%  2.7%  1.0%
  
  [libx264 @ 0x27b2ca0] ref B L1: 96.5%  3.5%
  
  [libx264 @ 0x27b2ca0] kb/s:1030.01

  ---

  On ffmpeg version N-93862-gf49cec2 (Ubuntu 18.04), the command fails immediately.

  # ffmpeg -ss 60 -i ~/test.mp4 -y -filter_complex "[0:v]scale=-2:'min(320,ih)'[vs0];[vs0]crop=in_w/9:in_h/2:0:0,boxblur=5:1:cr=3:ar=3[b0];[vs0]crop=in_w/9:in_h/2:in_w-out_w:0,boxblur=5:1:cr=3:ar=3[b1];[vs0]crop=(in_w-2*in_w/9):in_h/20:in_w/9:0,boxblur=5:1:cr=3:ar=3[b2];[vs0][b0]overlay=0:0[ovr0];[ovr0][b1]overlay=main_w-overlay_w:0[ovr1];[ovr1][b2]overlay=main_w/9:0[vs1]" -map [vs1] -an -ac 2 -b:a 128k -acodec aac -b:v 1024k -r 30 -vcodec libx264 -t 300 -y -preset slow -movflags faststart -pix_fmt yuv420p -f mp4 ~/out.mp4
  
  ffmpeg version N-93862-gf49cec2 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04)
  
    configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-openssl --enable-nonfree
  
    libavutil      56. 27.100 / 56. 27.100
  
    libavcodec     58. 52.101 / 58. 52.101
  
    libavformat    58. 27.103 / 58. 27.103
  
    libavdevice    58.  7.100 / 58.  7.100
  
    libavfilter     7. 53.100 /  7. 53.100
  
    libswscale      5.  4.101 /  5.  4.101
  
    libswresample   3.  4.100 /  3.  4.100
  
    libpostproc    55.  4.100 / 55.  4.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/root/test.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.76.100
  
    Duration: 00:10:00.00, start: 0.000000, bitrate: 1036 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 768x480, 1033 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x56055a5902c0] Invalid stream specifier: vs0.
  
      Last message repeated 1 times
  
  Stream specifier 'vs0' in filtergraph description [0:v]scale=-2:'min(320,ih)'[vs0];[vs0]crop=in_w/9:in_h/2:0:0,boxblur=5:1:cr=3:ar=3[b0];[vs0]crop=in_w/9:in_h/2:in_w-out_w:0,boxblur=5:1:cr=3:ar=3[b1];[vs0]crop=(in_w-2*in_w/9):in_h/20:in_w/9:0,boxblur=5:1:cr=3:ar=3[b2];[vs0][b0]overlay=0:0[ovr0];[ovr0][b1]overlay=main_w-overlay_w:0[ovr1];[ovr1][b2]overlay=main_w/9:0[vs1] matches no streams.