[FFmpeg-user] When will ffmpeg use VP9 v1.5?

D dcmhoybdpzkh at web.de
Tue Nov 24 13:02:00 CET 2015


The new version is up* and I did a quick benchmark:

ffmpeg-git-20151120-64bit-static$ ./ffmpeg -i a.mp4 -c:v libvpx-vp9 -b:v 
1M -cpu-used 4 -threads 4 -c:a libvorbis b.webm
fps= 13

ffmpeg-git-20151124-64bit-static$ ./ffmpeg -i a.mp4 -c:v libvpx-vp9 -b:v 
1M -cpu-used 4 -threads 4 -c:a libvorbis b.webm
fps= 17

Not sure if the multi-core command (4 cores, no HT) is correct but I get 
like only 80% CPU usage on average.

*The commit date is also much newer:
libvpx$ git show -s --format=%ci 0134764
2015-10-08 14:05:25 -0700
$ git fetch
libvpx$ git show -s --format=%ci b16a164
2015-11-23 23:37:13 +0000

On 23.11.2015 19:51, D wrote:
> John just told me that he's "[...] aware of the issue and it should be 
> built with 1.5 either by this time tomorrow or the next day". He also 
> wrote that the used VP9 version is just a few commits behind the v1.5 
> tag. I'm only wondering because
>
> libvpx$ git show -s --format=%ci 0134764
> 2015-10-08 14:05:25 -0700
>
> shows it's older (0134764 (without the g at the beginning)).
>
> Anyway, thanks, John.
>
>
> On 23.11.2015 14:34, D wrote:
>> Hi,
>> I just downloaded the latest build (http://johnvansickle.com/ffmpeg/ 
>> -> "build: ffmpeg-git-64bit-static.tar.xz") and when encoding with 
>> VP9 (the new release has supposedly: "- Substantially improved VP9 
>> encoding speed and quality"), it says:
>>
>> ...
>> [libvpx-vp9 @ 0x41f32e0] v1.4.0-1490-g0134764
>> ...
>>
>>
>> I'm not sure but it looks like 0134764 (without the g at the 
>> beginning) is indeed rather old:
>> $ git clone https://chromium.googlesource.com/webm/libvpx
>> $ cd libvpx
>> $ git checkout v1.5.0
>> libvpx$ git show -s --format=%ci 0134764
>> 2015-10-08 14:05:25 -0700
>>
>> When will ffmpeg use VP9 v1.5?
>> _______________________________________________
>> ffmpeg-user mailing list
>> ffmpeg-user at ffmpeg.org
>> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
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