Recherche avancée

Sur d’autres sites (5987)

• Animated Gif using PHP 5 and ffmpeg [closed]

  1er décembre 2012, par user1828200

  I make an Animated Gif, by download a video from youtube with youtube-dl and then convert it into AVI with ffmpegand then make animated gif through convert. It works, but speed is very slow.

  Here is my code

  Youtube Download :

  shell_exec("youtube-dl -o JNJNoaIU7qs.flv --format=5 --audio-quality=9 http://www.youtube.com/watch?v=JNJNoaIU7qs);

  Convert to AVI , because I want to make Small Gif so time manipulation is not done with youtube-dl thats why i convert avi with time manipulation

  shell_exec("ffmpeg -i JNJNoaIU7qs.flv -sameq -ss 00:00:5 -t 00:00:10 JNJNoaIU7qs.avi");

  Make Gif

  shell_exec("convert -quiet -delay 0  JNJNoaIU7qs.avi JNJNoaIU7qs.gif"); 

  It creates the GIF files, but it is very slow, how can I increase the speed of conversion ?

• How to calculate the "Range" header for mp4 file to play/download a part of it ? [youtube-dl]

  5 décembre 2016, par supersan

  I’m using youtube-dl to download videos from YouTube. Unfortunately, sometimes I just need to download a part of the video like 10 seconds of a 3 hour video and here is how I see I can do it.

  Step 1 : Get the URL of the mp4 file from youtube-dl.

  youtube-dl -g -f "[ext=mp4]" https://www.youtube.com/watch?v=qOZ1u9VpoMk

  This returns $url : the full URL of mp4 file on server.

  Step 2 : Download part of the video using curl

  curl -r $startBytes-$endBytes $url

  But how to calculate $startBytes and $endBytes. What is the formula for that ?

  P.S I was thinking could be something as simple but this isn’t it..

  $startBytes = (total_size_of_video / total_length_of_video_secs) * start_seconds

  P.P.S. When I play the mp4 video in Chrome and use the scrub bar to jump around in the video, Chrome too send the Range header to the same URL (as I can see in fiddler)

• Stream Video from Raspberry Pi to my Webpage

  21 septembre 2016, par velu4689

  I want to live stream the video captured on my SJ 4000 Camera.

  The Camera is Connected to my Rpi by Wi-Fi and the stream is available using the following address : rtsp ://192.168.1.254/sjcam.mov

  Now, I want to watch this stream in my webpage by using a Streaming Engine on Raspberry Pi.

  The rtsp ://Camera addr works when I Connected the Camera directly to my Windows PC and attempted using VLC. But I wanted to do it by using Rpi as the streaming engine.

  I have attempted the following :

  1) Using ffmpeg -i "rtsp ://[IP_ADDR]" -vcodec -f http://[my_pc_IP_ADDR]
  But am getting an error message "Unable to find a suitable output format for ’http://192.168.55.39:5678".

  2) Installed OMX Player. But I do not find proper material to stream using OMX Player.

  3) Have come across GStreamer. But still the same problem..I did not find proper material.

  Kindly provide your valuable inputs.

  Thanks.