Sur d’autres sites (6151)

• How can play scheduled video (time based playlist) using ffmpeg on nginx-rtmp ?

  26 mai 2019, par parsa sadr

  I’am using ffmpeg code to generates adaptive bitrate a RTMP stream from mp4 file.first convert input.mp4 file to 5 different resolution and bitrate .flv file using ffmpeg then again use ffmpeg and stream these 5 files on nginx-rtmp.(on one application with for bitrate output)
  I’am using NGINX to take the RTMP stream and forwards to clients by HLS protocol and it is working fine.
  but my problem is :
  ""How can create dynamic scheduled playlist and play videos on Specified time ?""

  create 5 .flv file

  ffmpeg -re -i /home/video/input.mp4 \
   vcodec libx264 -pix_fmt yuv420p -preset medium -tune zerolatency -vsync cfr -s 480x360 -c:a aac -strict -2 -ac 2 -b:a 96k -preset ultrafast -x264-params "nal-hrd=cbr" -b:v 500k -minrate 500k -maxrate 500k -bufsize 1000k /home/video2/3.flv \
  ...
  ...

  then stream on nginx server

  ffmpeg -re -i /home/video2/1.flv -re -i /home/video2/2.flv -re -i /home/video2/3.flv -re -i /home/video2/4.flv -re -i /home/video2/5.flv \
   map 4:0 -map 4:1 -c:v copy -c:a copy -f flv rtmp ://nginx-ip:port/app/stream_1080p \
   map 3:0 -map 3:1 -c:v copy -c:a copy -f flv rtmp ://nginx-ip:port/app/stream_720p \
   map 2:0 -map 2:1 -c:v copy -c:a copy -f flv rtmp ://nginx-ip:port/app/stream_480p \
   map 1:0 -map 1:1 -c:v copy -c:a copy -f flv rtmp ://nginx-ip:port/app/stream_360p \
   map 0:0 -map 0:1 -c:v copy -c:a copy -f flv rtmp ://nginx-ip:port/app/stream_240p ;

• execute shell script from php

  11 juillet 2016, par Shorty

  when i use a ffmpeg command in shell_exec it works, but when i want to execute the shellscript with a given value it doesn’t ...

   $cmd='ffmpeg -i /home/shorty/stormfall/'.$upld.' -filter_complex "[0:v]boxblur=10[bg];[0:v]crop=1280:625:00:45[fg];[bg][fg]overlay=00:45" -c:v libx264  -c:a copy /home/shorty/stormfall/swf/temp.flv';

  works but ;

   $cmd="./home/shorty/stormfall/members/moviefilters.sh /home/shorty/stormfall/$upld";

  not,

  i use

  file=$1
  
  ffmpeg -i $1 -filter_complex "[0:v]boxblur=10[bg];[0:v]crop=1280:625:00:45[fg];[bg][fg]overlay=00:45" -c:v libx264  -c:a copy /home/shorty/stormfall/swf/temp.flv

  in script to get the value

  any ideas to fix ?

• how to replace ffmeg's h.264 decoder ?

  26 novembre 2014, par myqiqiang

  Since FFMPEG take too much CPU resource and we can hardware decode in IOS8 ,so i want to replace its decoder with hardwaredecoder.

  but how ? i search in google but get nothing.

  and my thought now is to replace this method with my decoder
  _pCodec = avcodec_find_decoder(m_pCodecCtx->codec_id);

  here is what i want :
  1、if there is a way to replace the h.264 decoder ?
  2、if there exists,then how to do that ?
  3、if there any articles may help me ?