[FFmpeg-devel] The New Flash Video
Måns Rullgård
mans
Tue Aug 21 20:01:29 CEST 2007
Guillaume Poirier <gpoirier at mplayerhq.hu> writes:
> Hi,
>
> Mike Melanson wrote:
>> Hi,
>>
>> Big news: The most frequently asked question for FFmpeg usage is about
>> to go from:
>>
>> "How do I encode FLV files with Sorenson H.263 video and MP3 audio?"
>>
>> to:
>>
>> "How to I encode MP4 files with H.264 video and AAC audio?"
>>
>> More:
>>
>> http://www.kaourantin.net/2007/08/what-just-happened-to-video-on-web_20.html
>>
>
> Some people find this piece of news very disappointing:
> http://lists.xiph.org/pipermail/vorbis/2007-August/026930.html
What a load of bollocks, and he seems to actually believe it to boot.
A few points where this chap is obviously mistaken:
- H.264 and AAC are not proprietary. Quite to the contrary, they are
open ISO/ITU standards. The H.264 specification is available free
of charge. Although there is a charge for the AAC spec, this does
not make it proprietary.
- The Xiph codecs are hardly patent-free. On2 has granted a
royalty-free license for the patents they hold covering Theora/VP3.
The patent situation for Vorbis is at best unknown. With the
proliferation of patents, it is highly unlikely that none touches on
algorithms used in Vorbis.
- The advantages of H.264 over Theora are quite clear: higher visual
quality at lower bitrates. Is that not enough?
I wish the Xiph folks would stop pretending they've got something they
do not. Somehow I fear this will remain a wish.
--
M?ns Rullg?rd
mans at mansr.com
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