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shshankjain / webm

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libvpx encoder is slow even though active map has zero or few active macro blocks #221

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
Encode a series of images which have zero or very few active macro blocks 
changing. If active map is set with almost all zeros the encoder still run for 
a long time. In the case of the sample set (1280 x 1024), it takes constantly 
50ms to encode a frame in realtime mode.

It is surprising since there's no change in the images and encoder should know 
that because of the active map.

Original issue reported on code.google.com by hc...@google.com on 4 Nov 2010 at 10:06

GoogleCodeExporter commented 9 years ago 
Could it be altref filtering?

Original comment by fbarch...@google.com on 10 Dec 2010 at 12:57

GoogleCodeExporter commented 9 years ago 
would you be able to post your encoding settings and the input sequences? 
information like encode mode, cpu-used, key frame setting, and so on would be 
helpful in diagnose the issue.

Original comment by ya...@google.com on 13 Dec 2010 at 4:40

GoogleCodeExporter commented 9 years ago

Original comment by jimbankoski@google.com on 9 Feb 2011 at 10:05