Recherche avancée

Sur d’autres sites (11083)

• How give information about file with binary path /usr/bin/ffmpeg ? [closed]

  19 septembre 2012, par John Smith

  How give information about file with binary path /usr/bin/ffmpeg ?

  Peoples its not answer - its code for help all peoples-)

  Long time i search the correct code, now i write here. Washes it be useful to someone.

  1) get duration file

  ob_start();
  
  passthru("ffmpeg-9260.exe -i \"". $videofile . "\" 2>&1");
  
  $duration = ob_get_contents();
  
  ob_end_clean();
  
  
  
  
  
  preg_match('/Duration: (.*?),/', $duration, $matches);
  
  $duration = $matches[1];
  
  $duration_array = split(':', $duration);
  
  $duration = $duration_array[0] * 3600 + $duration_array[1] * 60 + $duration_array[2];
  
  $time = $duration * $percent / 100;
  
  $time = intval($time/3600) . ":" . intval(($time-(intval($time/3600)*3600))/60) . ":" . sprintf("%01.3f", ($time-(intval($time/60)*60)));

  2) get a picture of a particular frame of the video (flv or avi or another)

  ffmpeg -i video.avi -an -ss 00:01:30 -r 1 -vframes 1 -s 320×240 -y -f mjpeg screenshot.jpg

  3) how to convert video file to format .ogg

  a) ffmpeg -an -deinterlace -s 400×300 -r 20.00 -i CapeCodMarsh.avi -vcodec rawvideo -pix_fmt yuv420p -f rawvideo – |  ffmpeg -an -f rawvideo -s 400×300 -r 20.00 -i – -f yuv4mpegpipe – |  libtheora-1.0/lt-encoder_example –video-rate-target 512k – -o tmp.ogv
  
  
  
  b)ffmpeg -y -i CapeCodMarsh.avi -vn -acodec libvorbis -ac 2 -ab 128k -ar 44100 audio.ogg

  4) How I can get this value for the buffer ?

  var v = document.getElementById('file_id');
  
  var r = v.buffered.end(0);

  Enjoy=)

• Give IDCT matrix transpose macro a more descriptive name

  18 février 2014, par Diego Biurrun

  Give IDCT matrix transpose macro a more descriptive name
  This also avoids a macro name clash and related warning on ARM.
  

  • [DH] libavcodec/h264.c
  • [DH] libavcodec/vp3.c
  • [DH] libavcodec/vp56.c

• React Video Player failing to read RTSP stream

  20 octobre 2023, par hotmeatballsoup

  I have an RTSP server running local on localhost:8554 and can verify its up and running multiple ways. Its definitely running !

  


  I can stream/publish an MP4 file to it and make that feed available from rtsp://localhost:8554/mystream, and can read from it and do cool stuff with it via ffmpeg :

  


  # this works: it appends frames read from the RTSP server to the fp-copy-2.mp4 file
ffmpeg -rtsp_transport tcp -i rtsp://localhost:8554/mystream -c copy fp-copy-2.mp4


  


  I am now trying to play that stream/feed from inside my toy React app. I have a VideoPlayer component that looks like :

  


  import React from &#x27;react&#x27;;&#xA;import ReactPlayer from &#x27;react-player&#x27;;&#xA;&#xA;const VideoPlayer = () => {&#xA;  const rtspUrl = &#x27;rtsp://localhost:8554/mystream&#x27;;&#xA;&#xA;  return (&#xA;    <div>&#xA;      <h1>Feed</h1>&#xA;      &#xA;    </div>&#xA;  );&#xA;};&#xA;&#xA;export default VideoPlayer;&#xA;&#xA;

  


  And I am loading it on a dashboard page like so :

  


  import React from &#x27;react&#x27;;&#xA;import VideoPlayer from &#x27;../../utils/player/VideoPlayer&#x27;;&#xA;&#xA;const DashboardPage = () => {&#xA;  return (&#xA;    <div>&#xA;      <h1>Dashboard</h1>&#xA;      <videoplayer></videoplayer>      &#xA;    </div>&#xA;  );&#xA;};&#xA;&#xA;export default DashboardPage;&#xA;

  


  When I run npm start and go to the dashboard page, I see the video player loaded but it is displaying a blank screen and is not playing the content that should be available on the feed. Any ideas where I'm going awry ? Does the react-player not handle RTSP perhaps ?