[FFmpeg-devel] [PATCH] share xiph rtp code

[Luca Barbato]

On 03/28/2010 10:41 PM, Josh Allmann wrote:
> On 28 March 2010 07:26, Luca Barbato <lu_zero at gentoo.org> wrote:
>> On 03/28/2010 10:24 AM, Josh Allmann wrote:
>>>
>>> Tested this with feng and gst-rtsp, and things seem to work but if
>>> someone could double-check the audio for me that'd be great.
>>
>> the main difference between vorbis and theora in the producer side is
>> due the fact you need to pick some information from the extradata to get
>> the right timings from the granulepos. iirc the receiver side should be
>> identical so it looks fine.
>>
>> The output is completely broken? trying to do a streamcopy results in a
>> broken vorbis?
>>
> 
> By streamcopy I assume you mean "-acodec copy" ? It seems that
> ffmpeg's default behavior for vorbis, lacking the copy, is to
> re-encode through flac.
> 
> As far as I can tell, Vorbis streamcopy output is bitexact
> before-and-after this patch, so if it's broken now, then it always has
> been.

Ok ...


> FFmpeg seems picky about the samples used though; most I've tried will
> throw one error or another (usually timestamp-related). I have been
> using this to streamcopy vorbis:
> http://samples.mplayerhq.hu/V-codecs/Theora/Sahara.ogg

Uhm, does that happen with gst, feng or both?

lu

-- 

Luca Barbato
Gentoo/linux
http://dev.gentoo.org/~lu_zero