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  • Youtube Livestream - ffmpeg error : av_interleaved_write_frame() : End of File

    21 décembre 2022, par mitch401

    I'm using a Raspberry Pi 3B (OS : Raspian) to livestream an attached camera feed to YouTube using the following command in a python script(I removed the livestream secret key) :

    


    raspivid -o - -t 0 -vf -hf -fps 30 -b 6000000 | ffmpeg -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -thread_queue_size 1024 -i /dev/zero -f h264 -thread_queue_size 1024 -i - -vcodec copy -acodec aac -ab 128k -g 50 -strict experimental -f flv rtmp://a.rtmp.youtube.com/live2/[My Secret Key]> /home/Desktop/Livestream_Logs/Output_Runthrough".txt 2>&1

    


    However, I am running into a problem where the livestream cuts out at random times (usually after an hour) and the command terminates due to the following error : av_interleaved_write_frame() : Broken pipe

    


    I am new to the ffmpeg command and live-streaming in general, so please go easy on me for I do not know what I am doing wrong with this command, nor do I understand all its arguments ! This is a Christmas project I am working on, and I copied this command from this site.

    


    Below is the output log from running the command. There were over 60,000 frames in the log so I removed most lines to save space, but included some samples ; the bitrate and speed remained relatively the same throughout the command's execution :

    


    ffmpeg version 4.3.5-0+deb11u1+rpt2 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 10 (Raspbian 10.2.1-6+rpi1)
  configuration: --prefix=/usr --extra-version=0+deb11u1+rpt2 --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --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-librsvg --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-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-mmal --enable-neon --enable-rpi --enable-v4l2-request --enable-libudev --enable-epoxy --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --libdir=/usr/lib/arm-linux-gnueabihf --cpu=arm1176jzf-s --arch=arm
  WARNING: library configuration mismatch
  avutil      configuration: --prefix=/usr --extra-version=0+deb11u1+rpt2 --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --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-librsvg --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-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-mmal --enable-neon --enable-rpi --enable-v4l2-request --enable-libudev --enable-epoxy --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  avcodec     configuration: --prefix=/usr --extra-version=0+deb11u1+rpt2 --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --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-librsvg --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-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-mmal --enable-neon --enable-rpi --enable-v4l2-request --enable-libudev --enable-epoxy --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  avformat    configuration: --prefix=/usr --extra-version=0+deb11u1+rpt2 --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --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-librsvg --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-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-mmal --enable-neon --enable-rpi --enable-v4l2-request --enable-libudev --enable-epoxy --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  avdevice    configuration: --prefix=/usr --extra-version=0+deb11u1+rpt2 --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --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-librsvg --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-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-mmal --enable-neon --enable-rpi --enable-v4l2-request --enable-libudev --enable-epoxy --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  avfilter    configuration: --prefix=/usr --extra-version=0+deb11u1+rpt2 --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --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-librsvg --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-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-mmal --enable-neon --enable-rpi --enable-v4l2-request --enable-libudev --enable-epoxy --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  avresample  configuration: --prefix=/usr --extra-version=0+deb11u1+rpt2 --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --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-librsvg --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-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-mmal --enable-neon --enable-rpi --enable-v4l2-request --enable-libudev --enable-epoxy --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  swscale     configuration: --prefix=/usr --extra-version=0+deb11u1+rpt2 --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --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-librsvg --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-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-mmal --enable-neon --enable-rpi --enable-v4l2-request --enable-libudev --enable-epoxy --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  swresample  configuration: --prefix=/usr --extra-version=0+deb11u1+rpt2 --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --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-librsvg --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-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-mmal --enable-neon --enable-rpi --enable-v4l2-request --enable-libudev --enable-epoxy --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  postproc    configuration: --prefix=/usr --extra-version=0+deb11u1+rpt2 --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --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-librsvg --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-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-mmal --enable-neon --enable-rpi --enable-v4l2-request --enable-libudev --enable-epoxy --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  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
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, s16le, from '/dev/zero':
  Duration: N/A, bitrate: 1411 kb/s
    Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
Input #1, h264, from 'pipe:':
  Duration: N/A, bitrate: N/A
    Stream #1:0: Video: h264 (High), yuv420p(progressive), 1920x1080, 25 fps, 25 tbr, 1200k tbn, 50 tbc
Stream mapping:
  Stream #1:0 -> #0:0 (copy)
  Stream #0:0 -> #0:1 (pcm_s16le (native) -> aac (native))
Output #0, flv, to 'rtmp://a.rtmp.youtube.com/live2/[My Secret Key]':
  Metadata:
    encoder         : Lavf58.45.100
    Stream #0:0: Video: h264 (High) ([7][0][0][0] / 0x0007), yuv420p(progressive), 1920x1080, q=2-31, 25 fps, 25 tbr, 1k tbn, 1200k tbc
    Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 44100 Hz, stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc58.91.100 aac
[flv @ 0x130e5f0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[h264 @ 0x1308e30] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
frame=   13 fps=0.0 q=-1.0 size=     188kB time=00:00:00.48 bitrate=3202.0kbits/s speed=0.948x    
frame=   25 fps= 25 q=-1.0 size=     582kB time=00:00:00.97 bitrate=4892.9kbits/s speed=0.966x    
frame=   38 fps= 25 q=-1.0 size=     909kB time=00:00:01.48 bitrate=5012.3kbits/s speed=0.983x    
frame=   50 fps= 25 q=-1.0 size=    1219kB time=00:00:01.99 bitrate=5001.6kbits/s speed=0.988x    
frame=   63 fps= 25 q=-1.0 size=    1594kB time=00:00:02.48 bitrate=5255.3kbits/s speed=0.983x    
frame=   76 fps= 25 q=-1.0 size=    1855kB time=00:00:03.00 bitrate=5064.6kbits/s speed=0.99x    
   
frame= 2144 fps= 25 q=-1.0 size=   52465kB time=00:01:25.75 bitrate=5012.1kbits/s speed=   1x    
frame= 2157 fps= 25 q=-1.0 size=   52755kB time=00:01:26.24 bitrate=5011.2kbits/s speed=   1x    
frame= 2170 fps= 25 q=-1.0 size=   53101kB time=00:01:26.76 bitrate=5013.8kbits/s speed=   1x     

frame=25690 fps= 25 q=-1.0 size=  628697kB time=00:17:07.57 bitrate=5012.1kbits/s speed=   1x    
frame=25703 fps= 25 q=-1.0 size=  628980kB time=00:17:08.08 bitrate=5011.8kbits/s speed=   1x    
frame=25715 fps= 25 q=-1.0 size=  629295kB time=00:17:08.59 bitrate=5011.9kbits/s speed=   1x     

frame=58274 fps= 25 q=-1.0 size= 1426073kB time=00:38:50.93 bitrate=5011.9kbits/s speed=   1x    
frame=58287 fps= 25 q=-1.0 size= 1426391kB time=00:38:51.44 bitrate=5011.9kbits/s speed=   1x    
frame=58299 fps= 25 q=-1.0 size= 1426707kB time=00:38:51.95 bitrate=5011.9kbits/s speed=   1x     

frame=94289 fps= 25 q=-1.0 size= 2307471kB time=01:02:51.54 bitrate=5011.9kbits/s speed=   1x    
frame=94302 fps= 25 q=-1.0 size= 2307767kB time=01:02:52.04 bitrate=5011.9kbits/s speed=   1x    
frame=94315 fps= 25 q=-1.0 size= 2308071kB time=01:02:52.56 bitrate=5011.9kbits/s speed=   1x    

frame=128044 fps= 25 q=-1.0 size= 3133566kB time=01:25:21.74 bitrate=5012.0kbits/s speed=   1x    
frame=128057 fps= 25 q=-1.0 size= 3133823kB time=01:25:22.25 bitrate=5011.9kbits/s speed=   1x    
frame=128069 fps= 25 q=-1.0 size= 3134109kB time=01:25:22.72 bitrate=5011.9kbits/s speed=0.996x    
av_interleaved_write_frame(): End of file
[flv @ 0x130e5f0] Failed to update header with correct duration.
[flv @ 0x130e5f0] Failed to update header with correct filesize.
Error writing trailer of rtmp://a.rtmp.youtube.com/live2/[My Secret Key]: End of file
frame=128069 fps= 25 q=-1.0 Lsize= 3134109kB time=01:25:22.74 bitrate=5011.9kbits/s speed=0.996x    
video:3126661kB audio:1307kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.196311%
[aac @ 0x130ed10] Qavg: 65536.000
Conversion failed!


    


    As stated before the command I am using is from this site. However, they are using avconv instead of ffmpeg, but since avconv would not work on my raspberry pi, I switched out "avconv" for "ffmpeg" and kept all the same flags.

    


    Does anyone know why I'm getting this error ?

    


  • FFmpeg stdout emits more frames than it should

    29 décembre 2022, par distante

    I am running this command to get two images per second from an rtsp stream :

    


    const ffmpeg = spawn(this.ffmpeg, [
      // Set the frame rate of the input video to 2 frames per second
      '-r',
      '2',
      // Specify that the RTSP stream should use TCP as the transport protocol
      '-rtsp_transport',
      'tcp',
      // Set the input source to the RTSP stream specified by the `rtspUrl` variable
      '-i',
      rtspUrl,
      // Set the video filter to only output two frames per second (final video)
      '-vf',
      'fps=2',
      // Set the output format to "image2pipe," which specifies that the output should be written to stdout as a series of images in a pipe
      '-f',
      'image2pipe',
      // Overwrite any existing output file without prompting for confirmation
      '-y',
      // Set the output destination to stdout
      '-',
    ]);



    


    I am subscribing to the stdout and saving each emit into a file (just for testing, I need to process the data later)

    


        let i = 0;
    from(ffmpeg.stdout)
      .pipe(
        concatMap((data) => {
          i++
          return writeFile(`file_${i}`, data).then(() => i);
        }),
      )
      .subscribe((i) => {
        this.imageLogger.log(`file_${i} saved`);
      });


    


    The thing is, I am getting a lot more than 2 images per second :

    


    i       | [Nest] 431  - 12/28/2022, 1:16:09 PM     LOG [Image Logger] stderr: ffmpeg version 5.0.1-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2022 the FFmpeg developers
api       |   built with gcc 8 (Debian 8.3.0-6)
api       |   configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
api       |   libavutil      57. 17.100 / 57. 17.100
api       |   libavcodec     59. 18.100 / 59. 18.100
api       |   libavformat    59. 16.100 / 59. 16.100
api       |   libavdevice    59.  4.100 / 59.  4.100
api       |   libavfilter     8. 24.100 /  8. 24.100
api       |   libswscale      6.  4.100 /  6.  4.100
api       |   libswresample   4.  3.100 /  4.  3.100
api       |   libpostproc    56.  3.100 / 56.  3.100
api       |   configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
api       |   libavutil      57. 17.100 / 57. 17.100
api       |   libavcodec     59. 18.100 / 59. 18.100
api       |   libavformat    59. 16.100 / 59. 16.100
api       |   libavdevice    59.  4.100 / 59.  4.100
api       |   libavfilter     8. 24.100 /  8. 24.100
api       |   libswscale      6.  4.100 /  6.  4.100
api       |   libswresample   4.  3.100 /  4.  3.100
api       |   libpostproc    56.  3.100 / 56.  3.100
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] stderr: Guessed Channel Layout for Input Stream #0.1 : mono
api       | Input #0, rtsp, from 'rtsp://user:password@192.68.45.54:554/stream2':
api       |   Metadata:
api       |     title           : Session streamed by "TP-LINK RTSP Server"
api       |     comment         : stream2
api       |   Duration: N/A, start: 0.000000, bitrate: N/A
api       |   Stream #0:0: Video: h264 (High), yuvj420p(pc, bt709, progressive), 640x360, 15 fps, 28.58 tbr, 90k tbn
api       |   Stream #0:1: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
api       |
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] stderr: Stream mapping:
api       |   Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
api       | Press [q] to stop, [?] for help
api       |
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] stderr: Output #0, image2pipe, to 'pipe:':
api       |   Metadata:
api       |     title           : Session streamed by "TP-LINK RTSP Server"
api       |     comment         : stream2
api       |     encoder         : Lavf59.16.100
api       |   Stream #0:0: Video: mjpeg, yuvj420p(pc, bt709, progressive), 640x360, q=2-31, 200 kb/s, 2 fps, 2 tbn
api       |
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] stderr:     Metadata:
api       |       encoder         : Lavc59.18.100 mjpeg
api       |     Side data:
api       |       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] stderr: frame=    1 fps=0.0 q=5.0 size=      23kB time=00:00:00.50 bitrate= 383.9kbits/s speed=59.4x
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_1.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_2.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_3.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_4.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_5.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_6.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_7.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_8.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_9.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_10.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_11.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_12.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_13.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_14.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_15.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_16.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_17.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_18.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_19.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_20.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_21.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_22.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_23.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_24.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_25.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_26.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] stderr: frame=   27 fps=0.0 q=16.0 size=     559kB time=00:00:13.50 bitrate= 339.3kbits/s speed=25.3x
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_27.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_28.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_29.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_30.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_31.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:12 PM     LOG [Image Logger] file_32.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_33.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] stderr: frame=   34 fps= 33 q=16.6 size=     632kB time=00:00:17.00 bitrate= 304.6kbits/s speed=16.3x
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_34.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_35.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_36.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_37.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_38.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_39.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_40.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_41.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] stderr: frame=   41 fps= 26 q=16.5 size=     705kB time=00:00:20.50 bitrate= 281.7kbits/s speed=13.2x
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_42.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_43.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_44.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_45.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:13 PM     LOG [Image Logger] file_46.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_47.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_48.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] stderr: frame=   48 fps= 23 q=16.4 size=     779kB time=00:00:24.00 bitrate= 265.9kbits/s speed=11.6x
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_49.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_50.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_51.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_52.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_53.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_54.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_55.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] stderr: frame=   56 fps= 22 q=16.1 size=     865kB time=00:00:28.00 bitrate= 253.0kbits/s speed=10.9x
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_56.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_57.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_58.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_59.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:14 PM     LOG [Image Logger] file_60.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_61.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_62.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_63.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] stderr: frame=   63 fps= 20 q=15.5 size=     939kB time=00:00:31.50 bitrate= 244.3kbits/s speed=10.2x
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_64.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_65.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_66.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_67.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_68.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_69.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_70.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] stderr: frame=   70 fps= 19 q=15.4 size=    1017kB time=00:00:35.00 bitrate= 238.0kbits/s speed= 9.7x
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_71.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_72.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_73.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_74.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:15 PM     LOG [Image Logger] file_75.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:16 PM     LOG [Image Logger] file_76.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:16 PM     LOG [Image Logger] file_77.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:16 PM     LOG [Image Logger] stderr: frame=   78 fps= 19 q=15.1 size=    1106kB time=00:00:39.00 bitrate= 232.4kbits/s speed=9.48x
api       | [Nest] 431  - 12/28/2022, 1:16:16 PM     LOG [Image Logger] file_78.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:16 PM     LOG [Image Logger] file_79.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:16 PM     LOG [Image Logger] file_80.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:16 PM     LOG [Image Logger] file_81.jpg saved
api       | [Nest] 431  - 12/28/2022, 1:16:16 PM     LOG [Image Logger] file_82.jpg saved


    


    Am I missing some part ? why I do not only get 2 stdout events pro second ?

    


    Edit :

    


    ffmpeg version 5.0.1-static
node : 18.12.1

    


    Edit 2 :

    


    When I run this command on the terminal :

    


    ffmpeg -r 2 -rtsp_transport tcp -i "rtsp://user:password@192.68.45.54:554/stream2" -vf fps=2 -timecode 00:00:00:00 test.mp4


    


    The generated video has a frame rate of 2 but it looks like it is in slow motion. Since the source video has also a timer, I see how it takes something like 12 "frames" to go from one second to another.

    


    This is the output :

    


    fmpeg version 5.1.2 Copyright (c) 2000-2022 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_1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --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, rtsp, from 'rtsp://user:password@192.68.45.54:554/stream2':
  Metadata:
    title           : Session streamed by "TP-LINK RTSP Server"
    comment         : stream2
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0: Video: h264 (High), yuvj420p(pc, bt709, progressive), 640x360, 15 fps, 28.58 tbr, 90k tbn
  Stream #0:1: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
File 'test.mp4' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (pcm_alaw (native) -> aac (native))
Press [q] to stop, [?] for help
[aac @ 0x7fa79fb061c0] Too many bits 8832.000000 > 6144 per frame requested, clamping to max
[libx264 @ 0x7fa79fb04e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7fa79fb04e00] profile High, level 2.2, 4:2:0, 8-bit
[libx264 @ 0x7fa79fb04e00] 264 - core 164 r3095 baee400 - H.264/MPEG-4 AVC codec - Copyleft 2003-2022 - 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=11 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=2 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
[mp4 @ 0x7fa78f104780] Using non-standard frame rate 2/1
    Last message repeated 1 times
Output #0, mp4, to 'test.mp4':
  Metadata:
    title           : Session streamed by "TP-LINK RTSP Server"
    comment         : stream2
    timecode        : 00:00:00:00
    encoder         : Lavf59.27.100
  Stream #0:0: Video: h264 (avc1 / 0x31637661), yuvj420p(pc, bt709, progressive), 640x360, q=2-31, 2 fps, 16384 tbn
    Metadata:
      encoder         : Lavc59.37.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, mono, fltp, 48 kb/s
    Metadata:
      encoder         : Lavc59.37.100 aac
frame=  186 fps= 28 q=20.0 size=     256kB time=00:01:04.00 bitrate=  32.8kbits/s speed=9.58x

[q] command received. Exiting.

frame=  190 fps= 27 q=-1.0 Lsize=     749kB time=00:01:33.50 bitrate=  65.6kbits/s speed=13.2x
video:708kB audio:35kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.836704%
[libx264 @ 0x7fa79fb04e00] frame I:1     Avg QP:10.13  size: 45352
[libx264 @ 0x7fa79fb04e00] frame P:74    Avg QP:12.27  size:  7161
[libx264 @ 0x7fa79fb04e00] frame B:115   Avg QP:22.28  size:  1294
[libx264 @ 0x7fa79fb04e00] consecutive B-frames: 14.7%  9.5% 12.6% 63.2%
[libx264 @ 0x7fa79fb04e00] mb I  I16..4: 15.0% 14.0% 71.0%
[libx264 @ 0x7fa79fb04e00] mb P  I16..4:  0.6%  1.5%  2.4%  P16..4: 20.4%  4.9%  5.9%  0.0%  0.0%    skip:64.3%
[libx264 @ 0x7fa79fb04e00] mb B  I16..4:  0.0%  0.1%  0.3%  B16..8: 15.9%  2.4%  1.5%  direct: 0.9%  skip:78.9%  L0:45.5% L1:48.6% BI: 5.9%
[libx264 @ 0x7fa79fb04e00] 8x8 transform intra:27.4% inter:64.7%
[libx264 @ 0x7fa79fb04e00] coded y,uvDC,uvAC intra: 81.7% 60.2% 46.5% inter: 9.4% 4.2% 1.5%
[libx264 @ 0x7fa79fb04e00] i16 v,h,dc,p: 44% 10% 19% 27%
[libx264 @ 0x7fa79fb04e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 52% 14% 13%  3%  2%  3%  3%  5%  4%
[libx264 @ 0x7fa79fb04e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 18% 13%  6%  5%  6%  5%  6%  7%
[libx264 @ 0x7fa79fb04e00] i8c dc,h,v,p: 45% 18% 27%  9%
[libx264 @ 0x7fa79fb04e00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7fa79fb04e00] ref P L0: 78.9%  7.6% 11.4%  2.1%
[libx264 @ 0x7fa79fb04e00] ref B L0: 90.8%  8.0%  1.2%
[libx264 @ 0x7fa79fb04e00] ref B L1: 97.0%  3.0%
[libx264 @ 0x7fa79fb04e00] kb/s:60.98
[aac @ 0x7fa79fb061c0] Qavg: 64944.246


    


  • Why does ffmpeg keep using more and more RAM and crash ?

    29 décembre 2022, par József Márton Kakas

    I am using the following command with ffmpeg to encode a video file using the libsvtav1 codec : ffmpeg -i hevc.mkv -map 0:v:0 -c:v:0 libsvtav1 -preset 8 -crf 22 -format matroska av1.mkv.

    


    However, ffmpeg is using up all of my available RAM and crashing. I have also tried using the libx264 codec, but the same issue occurs, although it happens more slowly. I have already allocated 12 GB of RAM to ffmpeg, but it still seems to be insufficient. How can I prevent ffmpeg from using all of my available RAM and crashing when using either the libsvtav1 or libx264 codecs ?

    


    I have tried it on another VM, but the same issue occurs. Here is the full output of the program.

    


    ffmpeg -i akira.mkv -map 0:v:0 -c:v:0 libsvtav1 -preset 8 -crf 22 -c:a copy -c:s copy -format matroska av1.mkv
ffmpeg version n5.1.2-7-ga6e26053c2-20221106 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 12.2.0 (crosstool-NG 1.25.0.90_cf9beb1)
  configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-ffbuild-linux-gnu- --arch=x86_64 --target-os=linux --enable-gpl --enable-version3 --disable-debug --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --enable-libpulse --enable-libvmaf --enable-libxcb --enable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --disable-chromaprint --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-mbedtls --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --disable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --disable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --enable-libdrm --enable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags=-pie --extra-libs='-ldl -lgomp' --extra-version=20221106
  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, matroska,webm, from 'akira.mkv':
  Metadata:
    title           : Akira 4K
    encoder         : libebml v1.3.10 + libmatroska v1.5.2
    creation_time   : 2020-05-04T19:57:18.000000Z
  Duration: 02:04:46.50, start: 0.000000, bitrate: 10945 kb/s
  Stream #0:0: Video: hevc (Main 10), yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x2074 [SAR 1:1 DAR 1920:1037], 23.98 fps, 23.98 tbr, 1k tbn (default)
    Metadata:
      BPS-eng         : 9531297
      DURATION-eng    : 02:04:46.479000000
      NUMBER_OF_FRAMES-eng: 179496
      NUMBER_OF_BYTES-eng: 8919482644
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:1(eng): Subtitle: subrip
    Metadata:
      BPS-eng         : 46
      DURATION-eng    : 01:59:00.755000000
      NUMBER_OF_FRAMES-eng: 1277
      NUMBER_OF_BYTES-eng: 41675
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:2(ita): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s (default)
    Metadata:
      title           : Nuovo doppiaggio
      BPS-eng         : 448000
      DURATION-eng    : 02:04:28.480000000
      NUMBER_OF_FRAMES-eng: 233390
      NUMBER_OF_BYTES-eng: 418234880
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:3(ita): Audio: ac3, 48000 Hz, stereo, fltp, 448 kb/s
    Metadata:
      title           : Doppiaggio Storico
      BPS-eng         : 448000
      DURATION-eng    : 02:04:28.480000000
      NUMBER_OF_FRAMES-eng: 233390
      NUMBER_OF_BYTES-eng: 418234880
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:4(ita): Subtitle: dvd_subtitle, 1920x1080
    Metadata:
      title           : Italiano
      BPS-eng         : 8426
      DURATION-eng    : 02:00:14.955000000
      NUMBER_OF_FRAMES-eng: 1201
      NUMBER_OF_BYTES-eng: 7599491
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:5(ita): Subtitle: subrip (default)
    Metadata:
      title           : Forced
      BPS-eng         : 0
      DURATION-eng    : 01:46:31.753000000
      NUMBER_OF_FRAMES-eng: 14
      NUMBER_OF_BYTES-eng: 462
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:6(jpn): Audio: eac3, 48000 Hz, 5.1(side), fltp, 256 kb/s
    Metadata:
      BPS-eng         : 256000
      DURATION-eng    : 02:04:46.496000000
      NUMBER_OF_FRAMES-eng: 233953
      NUMBER_OF_BYTES-eng: 239567872
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:7(eng): Audio: eac3, 48000 Hz, 5.1(side), fltp, 256 kb/s
    Metadata:
      BPS-eng         : 256000
      DURATION-eng    : 02:04:46.496000000
      NUMBER_OF_FRAMES-eng: 233953
      NUMBER_OF_BYTES-eng: 239567872
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:8: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 1067x600, 90k tbr, 90k tbn (attached pic)
    Metadata:
      filename        : cover_land.jpg
      mimetype        : image/jpeg
  Stream #0:9: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 120x176, 90k tbr, 90k tbn (attached pic)
    Metadata:
      filename        : small_cover.jpg
      mimetype        : image/jpeg
  Stream #0:10: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 213x120, 90k tbr, 90k tbn (attached pic)
    Metadata:
      filename        : small_cover_land.jpg
      mimetype        : image/jpeg
  Stream #0:11: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 600x882, 90k tbr, 90k tbn (attached pic)
    Metadata:
      filename        : cover.jpg
      mimetype        : image/jpeg
  Stream #0:12: Attachment: otf
    Metadata:
      filename        : StoneSansStd-Semibold.otf
      mimetype        : application/vnd.ms-opentype
  Stream #0:13: Attachment: otf
    Metadata:
      filename        : StoneSansStd-SemiboldItalic.otf
      mimetype        : application/vnd.ms-opentype
  Stream #0:14: Attachment: otf
    Metadata:
      filename        : ATPacella-Black.otf
      mimetype        : application/vnd.ms-opentype
  Stream #0:15: Attachment: ttf
    Metadata:
      filename        : ITC Franklin Gothic LT Medium Condensed.ttf
      mimetype        : application/x-truetype-font
File 'av1.mkv' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (hevc (native) -> av1 (libsvtav1))
Press [q] to stop, [?] for help
Svt[info]: -------------------------------------------
Svt[info]: SVT [version]:       SVT-AV1 Encoder Lib v1.3.0
Svt[info]: SVT [build]  :       GCC 12.2.0       64 bit
Svt[info]: LIB Build date: Nov  6 2022 00:41:54
Svt[info]: -------------------------------------------
Svt[info]: Number of logical cores available: 16
Svt[info]: Number of PPCS 71
Svt[info]: [asm level on system : up to avx]
Svt[info]: [asm level selected : up to avx]
Svt[info]: -------------------------------------------
Svt[info]: SVT [config]: main profile   tier (auto)     level (auto)
Svt[info]: SVT [config]: width / height / fps numerator / fps denominator               : 3840 / 2080 / 24000 / 1001
Svt[info]: SVT [config]: bit-depth / color format                      : 10 / YUV420
Svt[info]: SVT [config]: preset / tune / pred struct                   : 8 / PSNR / random access
Svt[info]: SVT [config]: gop size / mini-gop size / key-frame type     : 161 / 16 / key frame
Svt[info]: SVT [config]: BRC mode / rate factor                        : CRF / 22 
Svt[info]: -------------------------------------------
Output #0, matroska, to 'av1.mkv':
  Metadata:
    title           : Akira 4K
    encoder         : Lavf59.27.100
  Stream #0:0: Video: av1 (AV01 / 0x31305641), yuv420p10le(tv, bt2020nc/bt2020/smpte2084, progressive), 3840x2074 [SAR 1:1 DAR 1920:1037], q=2-31, 23.98 fps, 1k tbn (default)
    Metadata:
      BPS-eng         : 9531297
      DURATION-eng    : 02:04:46.479000000
      NUMBER_OF_FRAMES-eng: 179496
      NUMBER_OF_BYTES-eng: 8919482644
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      encoder         : Lavc59.37.100 libsvtav1
frame=    1 fps=0.0 q=0.0 size=       1kB time=00:00:00.00 bitrate=N/A sframe=    2 fps=1.3 q=0.0 size=       1kB time=00:00:00.00 bitrate=N/A sframe=   51 fps= 25 q=0.0 size=       1kB time=00:00:00.00 bitrate=N/A sframe=   73 fps= 16 q=16.0 size=       1kB time=00:00:00.00 bitrate=7480frame=   76 fps= 14 q=16.0 size=       1kB time=00:00:00.00 bitrate=7480frame=   81 fps= 14 q=16.0 size=       1kB time=00:00:00.00 bitrate=7480frame=   87 fps= 14 q=21.0 size=       1kB time=00:00:00.16 bitrate=  44frame=   95 fps= 14 q=21.0 size=       1kB time=00:00:00.50 bitrate=  14frame=  100 fps= 13 q=16.0 size=       1kB time=00:00:00.66 bitrate=  11frame=  110 fps= 13 q=23.0 size=       1kB time=00:00:00.96 bitrate=   7frame=  114 fps= 13 q=23.0 size=       1kB time=00:00:01.12 bitrate=   6frame=  122 fps= 13 q=23.0 size=       1kB time=00:00:01.46 bitrate=   5frame=  126 fps= 12 q=23.0 size=       1kB time=00:00:01.62 bitrate=   4frame=  133 fps= 12 q=22.0 size=       1kB time=00:00:01.92 bitrate=   3frame=  139 fps= 12 q=21.0 size=       1kB time=00:00:02.17 bitrate=   3frame=  141 fps= 11 q=22.0 size=       1kB time=00:00:02.25 bitrate=   3frame=  144 fps= 11 q=23.0 size=       1kB time=00:00:02.37 bitrate=   3frame=  151 fps= 11 q=13.0 size=       1kB time=00:00:02.67 bitrate=   2frame=  159 fps= 11 q=18.0 size=       1kB time=00:00:03.00 bitrate=   2frame=  164 fps= 11 q=22.0 size=       1kB time=00:00:03.21 bitrate=   2frame=  174 fps= 11 q=22.0 size=       1kB time=00:00:03.63 bitrate=   2frame=  179 fps= 11 q=20.0 size=       1kB time=00:00:03.83 bitrate=   1frame=  187 fps= 11 q=20.0 size=       1kB time=00:00:04.17 bitrate=   1frame=  189 fps= 10 q=21.0 size=       1kB time=00:00:04.25 bitrate=   1frame=  192 fps= 10 q=22.0 size=       1kB time=00:00:04.38 bitrate=   1frame=  195 fps=8.0 q=20.0 size=       1kB time=00:00:04.50 bitrate=   1frame=  201 fps=8.0 q=11.0 size=       1kB time=00:00:04.67 bitrate=   1Killeds/s speed=0.187x


    


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