[FFmpeg-user] Faster vp9

Christian Ebert blacktrash at gmx.net
Wed Apr 8 15:13:21 CEST 2015

* tim nicholson on Wednesday, April 08, 2015 at 08:03:52 +0100
> 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:
>>> Does anyone have any suggestions for faster vp9 encoding?
>> 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.

The wiki has it for vp8 as well:

Not sure what to make of it.

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