[FFmpeg-devel] Official status of FFv1?

[Baptiste Coudurier]

On 03/22/2010 11:40 AM, Jason Garrett-Glaser wrote:
>> What is the implementation status of x264 lossless in libavcodec, and
>> would it be possible to have intra-frame encoding only? I've read that
>> it's compression is inter-frame.
>
> FFV1 will crush x264 compression-wise on intra-frame encoding.  x264's
> lossless intra compression sucks because of idiots writing specs.
>
> On Mon, Mar 22, 2010 at 11:15 AM, Baptiste Coudurier
> <baptiste.coudurier at gmail.com>  wrote:
>> On 03/22/2010 10:31 AM, Jason Garrett-Glaser wrote:
>>>>
>>
>> Do you have samples so I could verify this ?
>>
>> In all the tests I made, FFV1 outperformed x264 lossless, and was much
>> faster.
>
> Did you compare apples against apples (CABAC vs range, CAVLC vs rice)?
>   Did you try x264 --preset ultrafast for encoding?

Yes. Using ultrafast, difference in output file size was quite big.

> More importantly, FFV1 in inter mode cannot be threaded (inherently
> so), while H.264 can.
>
> Of course, now that he's said he only wants lossless, there's no
> reason to use x264.

Yes, nonetheless having samples to benchmark is always interesting.
Do you have the samples ?

-- 
Baptiste COUDURIER
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