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• ffmpeg conversion from MOD files (artefacts, codec selection)

  1er novembre 2023, par euh

  I am new to ffmpeg and trying to figure out how to convert .MOD files to any generally readable format.
So far I was trying to
ffmpeg -i MOV00A.MOD -vcodec libx264 -acodec aac out.mp4

  


  Result video is readable and has correct ratio aspect is correct but with artefacts like those horizontal lines :


  


  My guess is that I might be using wrong codec but I do not understand which one to choose ?

  


  Running ffmprobe on .MOD results :

  


  ffprobe version 5.1.2 Copyright (c) 2007-2022 the FFmpeg developers
  built with Apple clang version 14.0.0 (clang-1400.0.29.202)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/5.1.2_4 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
Input #0, mpeg, from 'MOV00A.MOD':
  Duration: 00:00:41.28, start: 0.262222, bitrate: 5285 kb/s
  Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn
    Side data:
      cpb: bitrate max/min/avg: 9286000/0/0 buffer size: 1835008 vbv_delay: N/A
  Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 256 kb/s


  


• Attempting to encode .png images to video format .avi. Getting an output error

  23 janvier 2023, par Trey King

  Here is the problem. My code is :

  


  cat *.png | ffmpeg -framerate 30 -f image2pipe -i -c:a copy -c:v libx264 -crf 18 -preset veryslow - output.avi


  


  output is :

  


  ffmpeg -framerate 30 -f image2pipe -i -c:a copy -c:v libx264 -crf 18
-preset veryslow - output.avi ffmpeg version 5.1.2-essentials_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers   built with gcc 12.1.0 (Rev2, Built by MSYS2 project)   configuration: --enable-gpl --enable-version3 --enable-static
--disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband   libavutil      57. 28.100 / 57. 28.100   libavcodec     59. 37.100 / 59. 37.100   libavformat   
59. 27.100 / 59. 27.100   libavdevice    59.  7.100 / 59.  7.100   libavfilter     8. 44.100 /  8. 44.100   libswscale      6.  7.100 / 
6.  7.100   libswresample   4.  7.100 /  4.  7.100   libpostproc    56.  6.100 / 56.  6.100
-c:a: Protocol not found Did you mean file:-c:a?


  


  I am not sure how to proceed.

  


  A one liner that I found elsewhere.

  


• ffmpeg doesn't sometimes start reading RTSP stream from IP camera without error

  8 décembre 2022, par Petr Dub

  I've an IP camera, which provide RTSP stream. I want to read this stream, rotate it 90° and provide data for displaying video via IIS server. I have a working solution via ffmpeg, but it is not reliable. It ends after several minutes without error and it is not starting sometimes.

  


  I use this command :
ffmpeg.exe -thread_queue_size 128 -i "rtsp://<login>:<pwd>@192.168.0.201:554/live/ch0" -vf "transpose=1" -y -c:a aac -b:a 160000 -ac 1 -s 432x768 -g 50 -hls_time 2 -hls_list_size 1 -start_number 1 -hls_flags delete_segments m:\playlist.m3u8</pwd></login>

  


  It works, but after several minutes (40 to 100) it stops without error (I have no idea why). When I restart the same ffmeg command, it sometimes doesn’t start reading the stream, but it doesn’t produce any error, the ffmpeg process is still running. Error output from ffmeg shows :

  


  ffmpeg version 2022-11-03-git-5ccd4d3060-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 12.1.0 (Rev2, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      57. 40.100 / 57. 40.100
  libavcodec     59. 51.101 / 59. 51.101
  libavformat    59. 34.101 / 59. 34.101
  libavdevice    59.  8.101 / 59.  8.101
  libavfilter     8. 49.101 /  8. 49.101
  libswscale      6.  8.112 /  6.  8.112
  libswresample   4.  9.100 /  4.  9.100
  libpostproc    56.  7.100 / 56.  7.100


  


  The next row should be :

  


  Input #0, rtsp, from &#x27;rtsp://<login>:<pwd>@192.168.0.201:554/live/ch0&#x27;</pwd></login>

  


  Any ideas, what should I do ? At least to force ffmpeg end with error and not stays “running”…

  


  Edit : I finally wrote a windows service, which starts the ffmpeg and monitors its error output. When nothing comes to this output for several seconds, it kills the ffmpeg process and starts a new one.