[FFmpeg-devel] [PATCH3/3] avfilter YUV aligment 32 bytesaligment for Y only and 16 bytes for UV.
Tue Sep 21 21:10:10 CEST 2010
The other option to preserve 2:1 ratio between linesize and linesize/linesize
Is to align linesize and linesize on 8 bytes that would be slower no?
What would you recommend?
From: ffmpeg-devel-bounces at mplayerhq.hu [mailto:ffmpeg-devel-bounces at mplayerhq.hu] On Behalf Of M?ns Rullg?rd
Sent: Tuesday, September 21, 2010 12:30 PM
To: FFmpeg development discussions and patches
Subject: Re: [FFmpeg-devel] [PATCH3/3] avfilter YUV aligment 32 bytesaligment for Y only and 16 bytes for UV.
"Richard Buteau" <rbuteau at rgbnetworks.com> writes:
> Hi all,
> Some encoder don't support linesize that aren't multiple. As an
> example they expect 720/360/360 for yuv image or 732/368/368.
> the avfilter align all linesize on 16 byte, this make a yuv 720/368/368.
> 720 isn't a multiple of 368.
> I added alignment on 32bytes for Y only so it's always 732/368/368
Why? Nothing requires alignment greater than 16. If something did,
this patch would be the wrong way to fix it.
mans at mansr.com
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