[FFmpeg-user] Faster vp9

[tim nicholson]

On 07/04/15 15:18, Matt Zagrabelny wrote:
> On Mon, Apr 6, 2015 at 11:10 PM, Andrew Sinclair <ajsinclair at gmail.com> wrote:
>> Hi,
>>
>> Does anyone have any suggestions for faster vp9 encoding?
> 
> Hi Andrew,
> 
> I don't have the ffmpeg technical chops to analyze your command-line,
> but I just came across a Google VP9 encoding guide:
> 
> https://sites.google.com/a/webmproject.org/wiki/ffmpeg/vp9-encoding-guide
> 
> Maybe that will be helpful.
> 

I see it advises using 2 pass encoding with crf, which seems a bit odd
to me given that "This (crf) provides maximum compression efficiency
with a single pass" or is that only true of x264? I would have thought
that it should be true for all coders that implement such a mode.

> [...]

-- 
Tim.
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