[FFmpeg-devel] The New Flash Video
Tue Aug 21 20:01:29 CEST 2007
Guillaume Poirier <gpoirier at mplayerhq.hu> writes:
> Mike Melanson wrote:
>> 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?"
>> "How to I encode MP4 files with H.264 video and AAC audio?"
> Some people find this piece of news very disappointing:
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.
mans at mansr.com
More information about the ffmpeg-devel