Newest 'ffmpeg' Questions - Stack Overflow

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• FFmpeg ios sample code for video streaming

  29 avril 2014, par iJose

  I have done with Video Encoding using AVFoundation framework in ios.

  Now i want to stream these video to a RTMP server using FFMPEG. IT would be great help if anyone of you post a link / sample Code for achieving this. Any other Solution other than this is also invited.

  Thanking you in advance.

• OpenCV ffmpeg error on raspberry pi for image processing on a video [on hold]

  28 avril 2014, par user3410968

  I want to install opencv on the raspberry pi for image detection on a video I have followed [this tutorial] but the videos are not to be played or proccessd. I tried to install it again to make sure ffmpeg is enabled error appears during config.

  ffmpeg/avformat.h is not found

  I have searched and what I found this questionthe answer is to make sure that ffmpeg is installed on the pi before making the opencv so I installed the ffmpeg went through all the steps till make and sudo make install in the main directory of the pi but still when I

  ccmake ../ then press c

  to config same error appears I have tried to put the ffmpeg file inside the release file and put the avformat.h just in opencv/release/ffmpeg same error file not found how can I solve this problem.

• FFMpeg Converting a video to 8 bit BMP frames

  28 avril 2014, par Myrda Sahyuti

  I have been having trouble converting a video to 8 bit BMP frames. How to convert it using FFmpeg? or have suggestion software to do that?

• Streaming WebM with ffmpeg over UDP doesn't work with audio

  28 avril 2014, par omgodie

  I'm trying to stream a webcam video and audio as WebM via udp over the ffmpeg command line tool. (ffmpeg is build correctly and all libraries are included)

  The stream is initiated with:

  ffmpeg -f dshow -i video="Logitech HD Pro Webcam C910":audio="Mikrofon (USB-Audogerät)" -f webm udp://localhost:11100
  

  and i try to playback the file on the same computer with:

  ffplay udp://localhost:11100
  

  Streaming Video AND audio doesn't work. I get the following error message in ffplay:

  udp://localhost:11100: End of file 0KB vq=    0KB sq=    0B f=0/0
  nan    :  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0
  

  If i just stream the video

  ffmpeg -f dshow -i video="Logitech HD Pro Webcam C910" -f webm udp://localhost:11100
  

  I receive the video with ffplay.

  What do i have to do to stream/receive audio correctly?

  I'm trying this way with the command line to reproduce a way with using libav in a C project if this is of interest...

• run exe on 1and 1 hosted site

  28 avril 2014, par Paul Ledger

  I have a ffmpeg.exe file than runs on localhost but this doesn't work on my web server. As it is 1and1 I can't install ffmpeg as a extension. All this is supposed to do is create a thumbnail from the video in the same folder.

  <?php
    $output = 'robot.jpg';
    $input = 'robot.avi';
    $ffmpegpath = "ffmpeg.exe";
    if(file_exists($ffmpegpath)){
      echo 'found the file 
  ';
    }
    $size = '100x100';
    $sec = '1';
    $cmd = "ffmpeg.exe -i $input -an -ss $sec -s $size $output";
    if(exec(escapeshellcmd($cmd))){
      echo 'worked';
    }else{
      echo 'not worked';
    }
  ?>
  

  Is there a way of getting this too work without having full control over the server. The site is hosted on a basic lunix package, this was set up by a friend. So there isn't much control.