[FFmpeg-devel] [PATCH] Additional libx264 presets
Wed Feb 17 00:48:21 CET 2010
On Tue, Feb 16, 2010 at 3:34 PM, Lou Logan <lou at fakeoutdoorsman.com> wrote:
> On Fri, 12 Feb 2010 02:18:53 -0800
> Jason Garrett-Glaser <darkshikari at gmail.com> wrote:
>> On Fri, Feb 12, 2010 at 2:10 AM, Lou Logan <lou at fakeoutdoorsman.com>
>> > This patch adds libx264 presets that mostly emulate the x264
>> > presets: ultrafast, veryfast, faster, fast, slow, slower, veryslow,
>> > placebo.
>> > There are some options that x264 uses that could not be included in
>> > this patch because there are no equivalent options in FFmpeg:
>> > ultrafast: --aq-mode 0
>> > slow: --rc-lookahead 50
>> > slower, veryslow, placebo: --rc-lookahead 60
>> I tentatively approve this patch, but there is the catch of first pass
>> options: "veryslow", "ultrafast", and "placebo" all use bframe values
>> different from default, which would mean fastfirstpass/slowfirstpass
>> presets would no longer work. ?Without a flexible preset-logic system,
>> we would have to have ultrafast-firstpass, veryfast-firstpass, and so
>> forth, for first pass presets.
>> Dark Shikari
> Attached is an updated patch that includes ultrafast_firstpass,
> veryfast_firstpass, and placebo_firstpass. ?placebo_firstpass is simply
> a copy of placebo, but there may be a better way of doing that.
Any reason you can't have all of the firstpasses, not just those 3?
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