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• ffmpeg infinite streaming of audio and video using rtmp

  30 août 2019, par Jarro

  I’m trying to make a Youtube radio consisted of infinitely looped video.mp4 (10 seconds length) and infinitely looped audio.flac (4 hours length) streaming from my VPS. These Audio and Video streams don’t require synchronization.

  I tried to use FFMPEG and it worked well until I tried to make the streams looping

  ffmpeg -f concat -i video.txt \
  
  -f concat -i audio.txt \
  
  -c:a aac \
  
  -s 1920x1080 \
  
  -ab 256k \
  
  -b:v 2500k \
  
  -q:v 3 \
  
  -preset veryfast \
  
  -vcodec libx264 \
  
  -pix_fmt yuv240p \
  
  -maxrate 1024k \
  
  -bufsize 048k \
  
  -framerate 4 \
  
  -threads 2 \
  
  -f flv \
  
  "$YOUTUBE_URL/$KEY"

  (audio.txt contains 10000 identical lines of ’file audio.flac’, video.txt ’file video.mp4’ respectively)
  ’concat’ filter leaves some terrible glitch resulting in my stream (both audio and video) frequently scrolled forward for 10 seconds or so.
  I also tried ’-stream_loop’ flag but it does not work with multiple input streams.

• FFMPEG Android Compile With libmp3lame

  7 juillet 2016, par burakcosk

  my os is mac os x

  I can compile and use ffmpeg without libmp3lame , and having no problems, I use below command to compile ffmpeg

  sudo ./configure

  but when I try it with

  sudo ./configure —enable-libmp3lame

  It returns error ERROR : libmp3lame >= 3.98.3 not found

  However, I have libmp3lame installed on my system.

  I installed libmp3lame using brew install lame

  and linked with brew link lame.

  when I look into config.log to see error messages I got this

  gcc -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DPIC -std=c99 -mdynamic-no-pic -fomit-frame-pointer -fPIC -E -o /tmp/ffconf.V6BXHwIr.o /tmp/ffconf.rMa57AkB.c /tmp/ffconf.rMa57AkB.c:1:10 : fatal error : ’lame/lame.h’ file not found

  So it can not find lame/lame.h but I have lame/lame.h inside /usr/local/include ..

  I really stucked on this and searched over internet for many hours,

  any help would be greatly appreciated thanks

  EDIT =====

  I made some progress, now I have compiled ffmpeg witch runs without problems in Android, but I still could not combine it with the libmp3lame

• ffmpeg stream : only video, no audio (twitch livestream)

  24 mai 2023, par Sam Leurs

  I have the following ffmpeg command in node.js to stream to a twitch livestream.

  


  Please note that the code is simplified.

  


  const ffmpeg = require('ffmpeg-static');

const cmd = `${ffmpeg} \
-stream_loop -1 \
-re \
-f mp4 \
-i ${argv.v} \
-stream_loop -1 \
-re \
-f mp3 \
-i ${argv.a} \
-c:a libmp3lame \
-c:v libx264 \
-b:a 128k \
-b:v 4500k \
-ar 44100 \
-ac 2 \
-preset veryfast \
-pix_fmt yuv420p \
-f flv ${url}`;

const stream = exec(cmd);


  


  It's an mp4-file of 5 seconds and an mp3-file of 15 minutes. It should be an infinite stream.

  


  The video works and is looped as expected, but the audio isn't playing. If I add the audio directly to the video (with a video editor) and stream the file, the audio at twitch works.

  


  I had it working a few hours ago but after changing the command it does not work anymore. I was thinking I was blocked by twitch. It's a royalty free number generated by AI, so not a known pop song which could be blocked by twitch (if that's even possible).

  


  Does someone know the solution ?