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• Youtube stream of looping JPG stops randomly

  6 juillet 2021, par timw99

  Hi I'm fairly new at ffmpeg.

  


  I'm currently trying to get a low FPS Youtube stream working over RTMP using a JPG on loop which content gets changed using a NodeJS script periodically. I'm using the following command to stream (variable 3 is my stream key) :

  


  ffmpeg -re -loop 1 -pix_fmt bgr24 -framerate 5 -i img/now.jpg -re -stream_loop -1 -i output.mp3 -f flv -vcodec libx264 -profile:v main -g 60 -keyint_min 30 -b:v 400k -minrate 400k -maxrate 400k -preset ultrafast -tune zerolatency -bufsize 2000k rtmp://a.rtmp.youtube.com/live2/$3


  


  There's multiple things wrong here. The bitrate doesn't actually stay at 400k/s. It just goes to around 200-1000k and then just starts decreasing until the stream stops (usually at around 200-300k bitrate). It still seems like data is being sent (bitrate and current FPS are still updated (though they're very low) and speed goes parabolic. The frame counter itself just stops and Youtube doesn't continue streaming. See example :

  


  frame=  515 fps=5.0 q=12.0 size=    5803kB time=00:01:42.84 bitrate= 462.3kbits/
frame=  518 fps=5.0 q=11.0 size=    5824kB time=00:01:43.41 bitrate= 461.3kbits/
frame=  519 fps=5.0 q=11.0 size=    5838kB time=00:01:43.92 bitrate= 460.2kbits/
frame=  519 fps=5.0 q=11.0 size=    5838kB time=00:01:44.42 bitrate= 457.9kbits/
frame=  519 fps=4.9 q=11.0 size=    5838kB time=00:01:44.92 bitrate= 455.8kbits/
frame=  519 fps=4.9 q=11.0 size=    5838kB time=00:01:45.43 bitrate= 453.6kbits/
frame=  519 fps=4.9 q=11.0 size=    5838kB time=00:01:45.93 bitrate= 451.4kbits/
frame=  519 fps=4.9 q=11.0 size=    5838kB time=00:01:46.44 bitrate= 449.3kbits/
frame=  519 fps=4.8 q=11.0 size=    5838kB time=00:01:46.94 bitrate= 447.2kbits/
frame=  519 fps=4.8 q=11.0 size=    5838kB time=00:01:47.44 bitrate= 445.1kbits/
frame=  519 fps=4.8 q=11.0 size=    5838kB time=00:01:47.95 bitrate= 443.0kbits/
frame=  519 fps=4.8 q=11.0 size=    5838kB time=00:01:48.45 bitrate= 440.9kbits/
frame=  519 fps=4.8 q=11.0 size=    5838kB time=00:01:48.96 bitrate= 438.9kbits/
frame=  519 fps=4.7 q=11.0 size=    5838kB time=00:01:49.46 bitrate= 436.9kbits/
frame=  519 fps=4.7 q=11.0 size=    5838kB time=00:01:49.96 bitrate= 434.9kbits/
frame=  519 fps=4.7 q=11.0 size=    5838kB time=00:01:50.44 bitrate= 433.0kbits/
frame=  519 fps=4.7 q=11.0 size=    5838kB time=00:01:50.95 bitrate= 431.0kbits/
frame=  519 fps=4.7 q=11.0 size=    5838kB time=00:01:51.45 bitrate= 429.1kbits/
frame=  519 fps=4.6 q=11.0 size=    5838kB time=00:01:51.96 bitrate= 427.1kbits/
frame=  519 fps=4.6 q=11.0 size=    5838kB time=00:01:52.46 bitrate= 425.2kbits/
frame=  519 fps=4.6 q=11.0 size=    5838kB time=00:01:52.99 bitrate= 423.2kbits/


  


  I'm using a Digital Ocean VPS to run it, but the same happens on my own desktop which definitely has the hardware for a simple stream like this. Could it have something to do with me replacing the JPG content while trying to stream it ? I get this error every once in a while, but it seems like it fixes itself judging by the info :

  


  [mjpeg @ 0x562824d1fb40] overread 8
[mjpeg @ 0x562824d1fb40] EOI missing, emulating


  


  I can provide more information if it's needed. Thanks in advance.

  


• rtsp to youtube streaming not working in windows

  22 juillet 2020, par Martin Haryoko

  ffmpeg run in windows, i use this code for streaming RTSP to youtube streaming :

  


  ffmpeg -f lavfi -t 12:00:00 -rtsp_transport tcp -i rtsp://admin:martin123@103.76.204.2:554/Streaming/Channels/101 -tune zerolatency -g 2 -c:v copy -t 12:00:00 -c:a aac -strict experimental -f flv rtmp://a.rtmp.youtube.com/live2/zgzx-7sff-32xz-bbup-a25c


  


  but i got this error :

  


  C:\inetpub\wwwroot\ffmpeg\ffmpeg\bin>ffmpeg -f lavfi -t 12:00:00 -rtsp_transport tcp -i rtsp://admin:martin123@103.76.204.xxx:554/Streaming/Channels/101 -tune zerolatency -g 2 -c:v copy -t 12:00:00 -c:a aac -strict experimental -f flv rtmp://a.rtmp.youtube.com/live2/zgzx-7sff-32xz-bbup-a25c
ffmpeg version git-2020-07-20-43a08d9 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200621
  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 --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. 55.100 / 56. 55.100
  libavcodec     58. 96.100 / 58. 96.100
  libavformat    58. 48.100 / 58. 48.100
  libavdevice    58. 11.101 / 58. 11.101
  libavfilter     7. 87.100 /  7. 87.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
[lavfi @ 000001a7dc40e380] No such filter: 'rtsp://admin:martinxxx'
rtsp://admin:martin123@103.76.204.xxx:554/Streaming/Channels/101: Invalid argument


  


  can u help me ?

  


• Set the filename downloaded via youtube-dl to a variable [closed]

  22 septembre 2020, par Jim Jamil

  This is the current script, it's a Windows batch file that prompts for a Youtube url and then downloads the best audio in m4a. It's basically cobbled together and uses aria2 to manage the download.

  


  @echo off
SETLOCAL ENABLEDELAYEDEXPANSION
(set /p var1="Url? " && youtube-dl -f bestaudio[ext=m4a] --external-downloader aria2c --external-downloader-args "-j 16 -s 16 -x 16 -k 5M" --restrict-filenames -o "%%(title)s.%%(ext)s" --add-metadata --embed-thumbnail !Var1!)
ENDLOCAL
pause


  


  After asking for the url, I want to also prompt the user to input the start and end times to trim the audio, which would be done by ffmpeg post download.

  


  Something like :

  


  ffmpeg -i file.m4a -ss 00:00:20 -to 00:00:40 -c copy file-2.m4a


  


  Based on this : https://unix.stackexchange.com/questions/182602/trim-audio-file-using-start-and-stop-times/302469#302469

  


  The beginning and end times would need to be variables set by user input in 00:00:00 format, but not sure how to add the ffmpeg post-processing at the end or how it would all fit together. I want to add this trimming feature to remove some of the preamble on podcasts and get straight to the guest part of the show.

  


  The --embed-thumbnail is optional, and won't work anyway unless Atomic Parsley is present. FFmpeg often has trouble with Album Art anyway so I usually just use -vn on the final output file.