[FFmpeg-devel] [PATCH] avfilter/showcqt: remove yuv offset

[Michael Niedermayer]

On Tue, Nov 03, 2015 at 08:14:34AM -0800, Muhammad Faiz wrote:
> this makes draw_bar faster
> slightly different result with old version
> 
> check result (with ~3 minutes audio file):
> old:
>     real    0m49.611s
>     user    0m49.260s
>     sys     0m0.073s
> new:
>     real    0m47.606s
>     user    0m47.378s
>     sys     0m0.068s
> PSNR between old and new:
> yuv444p PSNR
>     y:109.519298 u:107.506485 v:104.746878
>     average:106.816074 min:99.167305 max:inf
> yuv422p PSNR
>     y:109.519298 u:108.025801 v:104.489734
>     average:107.279817 min:98.007467 max:inf
> yuv420p PSNR
>     y:109.519298 u:108.363875 v:105.290200
>     average:108.261511 min:97.461812 max:inf
> 
> patch attached
> thanks

> From 40336e9ab0ab72d59ef7826e0a73ab1b0d39b698 Mon Sep 17 00:00:00 2001
> From: Muhammad Faiz <mfcc64 at gmail.com>
> Date: Tue, 3 Nov 2015 22:01:55 +0700
> Subject: [PATCH] avfilter/showcqt: remove yuv offset

applied

thx

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Let us carefully observe those good qualities wherein our enemies excel us
and endeavor to excel them, by avoiding what is faulty, and imitating what
is excellent in them. -- Plutarch
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 181 bytes
Desc: Digital signature
URL: <http://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20151104/37c074cf/attachment.sig>