[FFmpeg-devel] The New Flash Video

Mike Melanson mike
Tue Aug 21 20:23:03 CEST 2007

ods15 at ods15.dyndns.org wrote:
> On Tue, Aug 21, 2007 at 07:01:29PM +0100, M?ns Rullg?rd wrote:
>> 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.
> Not going to join this discussion further than this mail, just wanted to 
> say, I agree with everything you said - my only gripe is with choosing AAC 
> over Vorbis, and only for CPU reasons... I'm dreading the day I'll see 
> some youtube video I can't watch because my 1.8GHz won't be able to handle 
> it :(

I don't see how that would be an issue-- you don't have ALSA on your
Linux box anyway. :) Flash for Linux needs that for audio.

	-Mike Melanson

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