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  • Convert wmv to mp4 with ffmpeg failing

    10 janvier 2012, par Morph

    I've seen quite a few posts on this, but I can't piece together whether I am doing things right, wrong, or need to download more stuff. I am converting from wmv to mp4 without complaints, but then when I go to play it on the browser window (HTML5) the player just turns grey and blanks out the controls.

    Installing ffmpeg I do

    ./configure --disable-yasm ; make ; make install

    Unless I include the disable yasm it wont go any further. Then I do

    ffmpeg -i myvideo.wmv myvideo.mp4

    All good so far. In my html source I have :

      <video width="320" height="240" controls="controls">
    
  <source src="myvideo.mp4" type="&#39;video/mp4;" codecs="avc1.42E01E, mp4a.40.2"></source>
    
  Your browser does not support the video tag.
    
  </video>

    I am playing this in Chrome 15 and ffmpeg -v is

    ffmpeg version 0.8.6, Copyright (c) 2000-2011 the FFmpeg developers
    
built on Dec  1 2011 15:42:06 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
    
configuration: --disable-yasm
    
libavutil    51.  9. 1 / 51.  9. 1
    
libavcodec   53.  7. 0 / 53.  7. 0
    
libavformat  53.  4. 0 / 53.  4. 0
    
libavdevice  53.  1. 1 / 53.  1. 1
    
libavfilter   2. 23. 0 /  2. 23. 0
    
libswscale    2.  0. 0 /  2.  0. 0

    So I get the HTML5, click on it to play the movie but then the control bar greys out, leaving the play button, but then the play button cannot be clicked and nothing plays.

    Is there something wrong with what I have done above ? Do I need to download some separate mp4 driver and compile it ? I see people referring to h.264 but I thoughts ffmpeg had that already included...

  • FFMpeg creates MP4 which no browser can decode, but it can be played in VLC

    21 octobre 2013, par wvxvw

    How can I debug what happened ? I've tried this with variations to generate a short video from a single image :

    ffmpeg -loop 1 -i black.png -vcodec libx264 -b 1500k -s 640x360 -t 1 out.mp4

    tried :

    1. Changing aspect ration (or omitting it).
    2. using -image2 instead of -loop.
    3. omitting bitrate.
    4. creating longer videos.
    5. also tried different syntax for specifying video codec : -v:c libx264.
    6. tried mpeg instead of libx264.

    In every case the effect is the same. The video plays in VLC, but not in the browser.

  • Is android ffmpeg library able to play video located in the assets folder

    23 août 2013, par Nagaraju

    I am using the ffmpeg library to play videos in Android. Video plays well from the SDCard but I would prefer it to play from the assets folder as it is more secure.

    Could anyone point me in the right direction ?

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