[FFmpeg-devel] Sponsoring feature for H.264 decoding with scaling factor (1/2, 1/4...) (if possible)
michael at niedermayer.cc
Fri Jun 17 19:16:12 CEST 2016
On Fri, Jun 17, 2016 at 05:39:23PM +0200, Eric Beuque wrote:
> i'm posting here for a feature that is missing in ffmpeg (or may be i
> missed something), which consist of decoding H.264 frame with a scaling
> factor of 1/2, 1/4, 1/8...
> I found the parameter lowres, which works well with MJPEG stream but it's
> not working with the H.264 decoder.
> I don't know if it's something possible to implement in the decoder, but if
> yes, my compagny agreed to sponsor the feature (depending on the cost of
> course), if a developer qualified is interested to do it.
> Is someone know if it is possible, and if it can exist someone interested
> to develop this feature?
is it acceptable if the encoder enforces some restrictions on the used
most general h264 likely cannot efficiently be decoded in lower
resolution with acceptable quality
Restricting the used intra modes may make it possible to do it though
i dont know what the quality would be but better than without
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
In fact, the RIAA has been known to suggest that students drop out
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