Changes between Version 5 and Version 6 of Encode/VP8


Ignore:
Timestamp:
Feb 10, 2016, 1:01:40 AM (19 months ago)
Author:
relaxed
Comment:

Helped someone in #ffmpeg figure this out. Thought it might helpful to others.

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  • Encode/VP8

    v5 v6  
    5050Here, you can choose different values for the bitrate other than `1M`, e.g. `500K`, but you must set all options (i.e., `minrate`, `maxrate` and `b:v`) to the same value. 
    5151 
     52== Alpha Channel == 
     53 
     54VP8 includes alpha channel support that can be seen at [http://simpl.info/videoalpha/] using Google Chrome. To create a similar video with ffmpeg from a series of png images: 
     55 
     56{{{ 
     57ffmpeg -i %04d.png -c:v libvpx -pix_fmt yuva420p -metadata:s:v:0 alpha_mode="1" output.webm 
     58}}} 
     59 
     60This is just the basic command needed for it to work. Add your variable or constant bitrate encoding options to control quality. 
     61  
    5262== Also see == 
    5363