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• Sync audio in video via ffmpeg ?

  26 juillet 2020, par JaneFarrow

  I need to fit audio with video, but sync option is negative (audio is -350 ms) How to fit it with video ? I see only examples when audio is +, but not -

  


• Revision 116047 : syntaxe compatible avec les vieilles versions de PHP, encore ...

  20 juillet 2019, par maieul@… — Log

  syntaxe compatible avec les vieilles versions de PHP, encore officiellement soutenus dans les vieilles versions de SPIP (RealEt ?)

• Audio slowly gets out of sync with video when streaming from raspberry pi 4

  3 mai 2021, par Steve Lloyd

  I am using a Raspberry Pi 4 to stream live to youtube using an external USB mic and the raspberry pi camera. After a while the audio gets out of sync. So far the only way to fix it is to kill and restart the command every hour or so. Any way to solve this ?

  


  Here is my command :

  


  /usr/bin/raspivid -md 4 -w 1280 -h 720 --preview 10,8,780,500 --opacity 85 -fps 15 -t 0 -b 4000000 -g 30 -o - |  ffmpeg -hide_banner -loglevel panic -nostats -y -xerror -thread_queue_size 32K -f h264 -r 15 -itsoffset 0 -i - -f alsa -ar 11025 -itsoffset 5.5 -async 1 -ac 1 -thread_queue_size 32K -i hw:2,0 -c:a aac -b:a 32k -async 1  -c:v copy  -f flv -flags:v +global_header -rtmp_buffer 10000 -r 15 -async 1 rtmp://a.rtmp.youtube.com/live2/$stream_key &


  


  Note : I posted this on stackexchange but have not got any helpful answers. https://raspberrypi.stackexchange.com/questions/118403/how-to-keep-audio-in-sync-with-raspivid-on-a-live-stream