[FFmpeg-devel] [PATCH 3/3] avcodec/utvideodec: use cached bitstream reader

Carl Eugen Hoyos ceffmpeg at gmail.com
Thu Aug 23 16:35:55 EEST 2018


2018-08-23 15:08 GMT+02:00, Paul B Mahol <onemda at gmail.com>:
> From 100x real-time decoding to 138x real-time decoding for 320x240 video.

On x86_64 I get an even better improvement, on x86_32
decoding gets slower by approximately 10%.
Without the patch, decoding is faster on x86_32 than
x86_64 here...

Testfile produced with:
$ ffmpeg -f lavfi -i testsrc=s=320x240 -vcodec utvideo -vframes 10000 out.avi

Same question I thought of when this patch was originally dropped:
Is there any problem with using the new reader on some targets
but not others?

Carl Eugen


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