[FFmpeg-devel] [PATCH 2/2] lavc/mediacodec: bypass width/height restrictions when looking for a decoder

Matthieu Bouron matthieu.bouron at gmail.com
Tue May 31 15:51:20 CEST 2016

On Tue, May 31, 2016 at 03:35:49PM +0200, Hendrik Leppkes wrote:
> On Tue, May 31, 2016 at 3:00 PM, Matthieu Bouron
> <matthieu.bouron at gmail.com> wrote:
> > From: Matthieu Bouron <matthieu.bouron at stupeflix.com>
> >
> > Codec width/height restrictions seem hardcoded at the OMX level and
> > seem arbitrary. Bypassing those restrictions allows a device to decode
> > streams at higher resolutions.
> >
> > For example it allows a Nexus 5 to decode h264 streams with a resolution
> > higher than 1920x1080.
> What happens if the resolution actually exceeds the devices capabilities?

The patch has been tested on various devices and it has been working so
far. When the resolution actually exceeds the device capabilities the
codec just fails to configure itself.

However I did not try to craft samples with really high resolutions (higher
than ~4K) to test the patch against.

I will double check what is happening with both SW output and surface



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