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• ffmpeg - Frames flip upside-down when using -c:v copy

  7 mars 2014, par user3384390

  I tried to just copy (a period of time of) an AVI-Video into another newly created AVI-file using ffmpeg's copy option.
  (On Windows 32-bit)

  ffmpeg -i "C:\Temp\zzz\myAvi.avi" -c copy -t 00:00:10 "C:\Temp\zzz\myAviNew.avi"

  Why are the pictures flipped upside-down in the resulting file ?
  (Also the generated new audio is a little distorted.)

  Using the same command again on the newly created file will not flip them back again - the pictures stay upside down.
  Why this ? Is it a bug ?

  Console brings the following output :

   ffmpeg version N-50911-g9efcfbe Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Mar 13 2013 21:26:48 with gcc 4.7.2 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libg
  
  sm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libo
  
  pencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-li
  
  bschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-lib
  
  twolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enabl
  
  e-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  
    libavutil      52. 19.100 / 52. 19.100
  
    libavcodec     55.  0.100 / 55.  0.100
  
    libavformat    55.  0.100 / 55.  0.100
  
    libavdevice    54.  4.100 / 54.  4.100
  
    libavfilter     3. 45.103 /  3. 45.103
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  [avi @ 02537ba0] non-interleaved AVI
  
  Guessed Channel Layout for  Input Stream #0.1 : stereo
  
  Input #0, avi, from 'C:\Temp\zzz\Hase.avi':
  
    Duration: 00:00:35.92, start: 0.000000, bitrate: 171375 kb/s
  
      Stream #0:0: Video: rawvideo, bgra, 768x576, 12 tbr, 12 tbn, 12 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16
  
  , 1411 kb/s
  
  Output #0, avi, to 'C:\Temp\zzz\HaseNew.avi':
  
    Metadata:
  
      ISFT            : Lavf55.0.100
  
      Stream #0:0: Video: rawvideo, bgra, 768x576, q=2-31, 12 tbn, 12 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, 141
  
  1 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=   11 fps=0.0 q=-1.0 size=   19162kB time=00:00:00.91 bitrate=171242.4kbit
  
  frame=   16 fps= 12 q=-1.0 size=   27874kB time=00:00:01.33 bitrate=171255.5kbit
  
  ...
  
  ...
  
  ...
  
  frame=  120 fps=5.4 q=-1.0 size=  209083kB time=00:00:09.99 bitrate=171280.6kbit
  
  frame=  121 fps=5.5 q=-1.0 Lsize=  210834kB time=00:00:10.08 bitrate=171288.2kbi
  
  ts/s
  
  video:209088kB audio:1723kB subtitle:0 global headers:0kB muxing overhead 0.0112
  
  76%
  
  
  
  C:\WINDOWS\system32>

• Save a stream of arrays to video using FFMPEG

  13 décembre 2022, par Gianluca Iacchini

  I made a simple fluid simulation using CUDA, and I'm trying to save it to a video using FFMPEG, however I get the Finishing stream 0:0 without any data written to it warning.

  


  This is how i send the data

  


  unsigned char* data = new unsigned char[SCR_WIDTH * SCR_HEIGHT * 4];
uchar4* pColors = new uchar4[SCR_WIDTH * SCR_HEIGHT];

for (int i = 0; i < N_FRAMES; i ++)
{
    // Computes a simulation step and sets pColors with the correct values.
    on_frame(pColors, timeStepSize);
    for (int j = 0; j < SCR_WIDTH * SCR_HEIGHT * 4; j+=4)
    {
        data[j] = pColors[j].x;
        data[j+1] = pColors[j].y;
        data[j+2] = pColors[j].z;
        data[j+3] = pColors[j].w;
    }
    std::cout.write(reinterpret_cast(data), SCR_WIDTH * SCR_HEIGHT * 4);
}


  


  And then I pass it to FFMPEG using the following command :

  


  ./simulation.o | ffmpeg -y -f rawvideo -pixel_format rgba -video_size 1024x1024 -i - -c:v libx264 -pix_fmt yuv444p -crf 0 video.mp4
`

  


  This works fine if I hard code the values (es. if I set data[j] = 255 I get a red screen as expected) but when I use the pColors variable I get the following message from FFMPEG

  


  Finishing stream 0:0 without any data written to it.

  


  Even though both pColors and data hold the correct values.

  


  Here is the full report from FFMPEG

  


  ffmpeg started on 2022-12-13 at 14:28:34
Report written to "ffmpeg-20221213-142834.log"
Command line:
ffmpeg -y -f rawvideo -report -pixel_format rgba -video_size 128x128 -i - -c:v libx264 -pix_fmt yuv444p -crf 0 video9.mp4
ffmpeg version 3.4.11-0ubuntu0.1 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chrom  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Splitting the commandline.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'rawvideo'.
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
Reading option '-pixel_format' ... matched as AVOption 'pixel_format' with argument 'rgba'.
Reading option '-video_size' ... matched as AVOption 'video_size' with argument '128x128'.
Reading option '-i' ... matched as input url with argument '-'.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'libx264'.
Reading option '-pix_fmt' ... matched as option 'pix_fmt' (set pixel format) with argument 'yuv444p'.
Reading option '-crf' ... matched as AVOption 'crf' with argument '0'.
Reading option 'video9.mp4' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option y (overwrite output files) with argument 1.
Applying option report (generate a report) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input url -.
Applying option f (force format) with argument rawvideo.
Successfully parsed a group of options.
Opening an input file: -.
[rawvideo @ 0x558eba7b0000] Opening 'pipe:' for reading
[pipe @ 0x558eba78a080] Setting default whitelist 'crypto'
[rawvideo @ 0x558eba7b0000] Before avformat_find_stream_info() pos: 0 bytes read:0 seeks:0 nb_streams:1
[rawvideo @ 0x558eba7b0000] After avformat_find_stream_info() pos: 0 bytes read:0 seeks:0 frames:0
Input #0, rawvideo, from 'pipe:':
  Duration: N/A, bitrate: 13107 kb/s
    Stream #0:0, 0, 1/25: Video: rawvideo (RGBA / 0x41424752), rgba, 128x128, 13107 kb/s, 25 tbr, 25 tbn, 25 tbc
Successfully opened the file.
Parsing a group of options: output url video9.mp4.
Applying option c:v (codec name) with argument libx264.
Applying option pix_fmt (set pixel format) with argument yuv444p.
Successfully parsed a group of options.
Opening an output file: video9.mp4.
[file @ 0x558eba78a200] Setting default whitelist 'file,crypto'
Successfully opened the file.
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
No more output streams to write to, finishing.
Finishing stream 0:0 without any data written to it.
detected 2 logical cores
[graph 0 input from stream 0:0 @ 0x558eba7a4a00] Setting 'video_size' to value '128x128'
[graph 0 input from stream 0:0 @ 0x558eba7a4a00] Setting 'pix_fmt' to value '28'
[graph 0 input from stream 0:0 @ 0x558eba7a4a00] Setting 'time_base' to value '1/25'
[graph 0 input from stream 0:0 @ 0x558eba7a4a00] Setting 'pixel_aspect' to value '0/1'
[graph 0 input from stream 0:0 @ 0x558eba7a4a00] Setting 'sws_param' to value 'flags=2'
[graph 0 input from stream 0:0 @ 0x558eba7a4a00] Setting 'frame_rate' to value '25/1'
[graph 0 input from stream 0:0 @ 0x558eba7a4a00] w:128 h:128 pixfmt:rgba tb:1/25 fr:25/1 sar:0/1 sws_param:flags=2
[format @ 0x558eba7a4b40] compat: called with args=[yuv444p]
[format @ 0x558eba7a4b40] Setting 'pix_fmts' to value 'yuv444p'
[auto_scaler_0 @ 0x558eba7a4be0] Setting 'flags' to value 'bicubic'
[auto_scaler_0 @ 0x558eba7a4be0] w:iw h:ih flags:'bicubic' interl:0
[format @ 0x558eba7a4b40] auto-inserting filter 'auto_scaler_0' between the filter 'Parsed_null_0' and the filter 'format'
[AVFilterGraph @ 0x558eba76d500] query_formats: 4 queried, 2 merged, 1 already done, 0 delayed
[auto_scaler_0 @ 0x558eba7a4be0] w:128 h:128 fmt:rgba sar:0/1 -> w:128 h:128 fmt:yuv444p sar:0/1 flags:0x4
[libx264 @ 0x558eba7cf900] using mv_range_thread = 24
[libx264 @ 0x558eba7cf900] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
[libx264 @ 0x558eba7cf900] profile High 4:4:4 Predictive, level 1.1, 4:4:4 8-bit
[libx264 @ 0x558eba7cf900] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=0 mixed_ref=1 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=0
Output #0, mp4, to 'video9.mp4':
  Metadata:
    encoder         : Lavf57.83.100
    Stream #0:0, 0, 1/12800: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p, 128x128, q=-1--1, 25 fps, 12800 tbn, 25 tbc
    Metadata:
      encoder         : Lavc57.107.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame=    0 fps=0.0 q=0.0 Lsize=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Input file #0 (pipe:):
  Input stream #0:0 (video): 0 packets read (0 bytes); 0 frames decoded; 
  Total: 0 packets (0 bytes) demuxed
Output file #0 (video9.mp4):
  Output stream #0:0 (video): 0 frames encoded; 0 packets muxed (0 bytes); 
  Total: 0 packets (0 bytes) muxed
0 frames successfully decoded, 0 decoding errors
[AVIOContext @ 0x558eba7b4120] Statistics: 2 seeks, 3 writeouts
[AVIOContext @ 0x558eba7b4000] Statistics: 0 bytes read, 0 seeks



  


  I've never used FFMPEG before so I'm having a hard time finding my mistake.

  


• ffmpeg could not find codec parameters for stream 0 on Ubuntu 22.04, works fine on Ubuntu 18.04

  22 février 2023, par ngm

  I'm new to ffmpeg but I've got an odd issue which seems to arise from using it on different Ubuntu versions.

  


  I have an NVIDIA Jetson Nano running Ubuntu 18.04.5 LTS (GNU/Linux 4.9.201-tegra aarch64). Plugged into the Nano's carrier board is an embedded camera that shows up as a Sunplus Innovation Technology Inc. USB2.0 Camera RGB when I run lsusb.

  


  When I run this ffmpeg command, I can successfully record video from the camera, which seems to be mjpeg codec with yuvj422p pixel format. The output is as follows :

  


  ffmpeg -f video4linux2 -i /dev/video0 -an -vcodec libx264 test_capture.mp4
ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/aarch64-linux-gnu --incdir=/usr/include/aarch64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, start: 166.142773, bitrate: N/A
    Stream #0:0: Video: mjpeg, yuvj422p(pc, bt470bg/unknown/unknown), 928x400, 100 fps, 100 tbr, 1000k tbn, 1000k tbc
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x558553df70] using cpu capabilities: ARMv8 NEON
[libx264 @ 0x558553df70] profile High 4:2:2, level 3.2, 4:2:2 8-bit
[libx264 @ 0x558553df70] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=6 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 'test_capture.mp4':
  Metadata:
    encoder         : Lavf57.83.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuvj422p(pc), 928x400, q=-1--1, 100 fps, 12800 tbn, 100 tbc
    Metadata:
      encoder         : Lavc57.107.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame=  192 fps= 65 q=-1.0 Lsize=     151kB time=00:00:01.89 bitrate= 654.4kbits/s dup=150 drop=0 speed=0.642x    
video:148kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.072495%
[libx264 @ 0x558553df70] frame I:1     Avg QP:23.62  size: 36953
[libx264 @ 0x558553df70] frame P:49    Avg QP:25.25  size:  2121
[libx264 @ 0x558553df70] frame B:142   Avg QP:30.55  size:    70
[libx264 @ 0x558553df70] consecutive B-frames:  1.0%  1.0%  0.0% 97.9%
[libx264 @ 0x558553df70] mb I  I16..4: 10.1% 78.8% 11.1%
[libx264 @ 0x558553df70] mb P  I16..4:  1.1%  1.9%  0.0%  P16..4: 19.1%  3.0%  2.0%  0.0%  0.0%    skip:72.8%
[libx264 @ 0x558553df70] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  2.7%  0.0%  0.0%  direct: 0.1%  skip:97.2%  L0:36.8% L1:62.3% BI: 0.9%
[libx264 @ 0x558553df70] 8x8 transform intra:68.4% inter:77.4%
[libx264 @ 0x558553df70] coded y,uvDC,uvAC intra: 42.0% 80.2% 41.3% inter: 2.2% 5.4% 0.2%
[libx264 @ 0x558553df70] i16 v,h,dc,p: 50% 17% 10% 23%
[libx264 @ 0x558553df70] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21%  9% 32%  5%  7%  7%  5%  8%  5%
[libx264 @ 0x558553df70] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 15% 12%  5% 14% 11%  8%  5%  7%
[libx264 @ 0x558553df70] i8c dc,h,v,p: 50% 12% 26% 12%
[libx264 @ 0x558553df70] Weighted P-Frames: Y:28.6% UV:28.6%
[libx264 @ 0x558553df70] ref P L0: 56.4% 28.2% 12.0%  2.5%  0.9%
[libx264 @ 0x558553df70] ref B L0: 93.4%  5.3%  1.3%
[libx264 @ 0x558553df70] ref B L1: 94.9%  5.1%
[libx264 @ 0x558553df70] kb/s:628.21
Exiting normally, received signal 2.


  


  However, I'd like to replace this Nano with another that I've upgraded to Ubuntu 22.04.1 LTS (GNU/Linux 4.9.299-tegra aarch64). The device still shows up as the same type when running lsusb. Running the exact same command results in the following :

  


  ffmpeg -f video4linux2 -i /dev/video0 -an -vcodec libx264 test_capture.mp4
ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
  configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened --libdir=/usr/lib/aarch64-linux-gnu --incdir=/usr/include/aarch64-linux-gnu --arch=arm64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
[video4linux2,v4l2 @ 0x55cab86450] Could not find codec parameters for stream 0 (Video: mjpeg, none(bt470bg/unknown/unknown), 1856x800): unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, bitrate: N/A
  Stream #0:0: Video: mjpeg, none(bt470bg/unknown/unknown), 1856x800, 60 fps, 60 tbr, 1000k tbn, 1000k tbc
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
Cannot determine format of input stream 0:0 after EOF
Error marking filters as finished
Exiting normally, received signal 2.


  


  I'm not sure why I can't read this video stream when everything seems to be the same but the OS and the ffmpeg version.

  


  I've checked the available codecs and pixel formats using ffmpeg -codecs and ffmpeg -pix_fmts :

  


  Ubuntu 18.04.5, ffmpeg version 3.4.8-0ubuntu0.2 :

  


  DEVIL. mjpeg                Motion JPEG (encoders: mjpeg mjpeg_vaapi )

  


  IO... yuvj422p               3            16

  


  Ubuntu 22.04.1, ffmpeg version 4.4.2-0ubuntu0.22.04.1 :

  


  DEVIL. mjpeg                Motion JPEG (decoders: mjpeg mjpeg_cuvid ) (encoders: mjpeg mjpeg_vaapi )

  


  IO... yuvj422p               3            16

  


  So it seems like I should be able to record video on both with this codec/pixel format combination.

  


  I've also tried forcing ffmpeg to use this combination on the 22.04 Nano with the following command :

  


  ffmpeg -f v4l2 -input_format mjpeg -framerate 100 -video_size 928x400 -pix_fmt yuvj422p -i /dev/video0 -an -vcodec libx264 test_capture.mp4

  


  But I get the same error. I've also tried increasing the -analyzeduration and -probesize arguments to 100M, with no luck.

  


  Are there other commands or settings I should use ? Should I downgrade my ffmpeg version if possible ?