[vlc] Re: STB compatible with VLC and MPEG4

[Måns Rullgård]

Peter Maersk-Moller <peter at maersk-moller.net> writes:

> Hi Måns
>
> Måns Rullgård wrote:
>> Peter Maersk-Moller <peter at maersk-moller.net> writes:
>>>Almost all (if not all) solutions based on Sigma Designs 84xx, 85xx
>>>and 86xx are flawed failing to implement MPEG-4 part 2 Pixel Aspect
>>>Ratio (PAR) in Video Object Layer (VOL) correctly. Rumour has it, that
>>>some are planning to fix this in firmware though nobody has been able
>>>to demonstrate this yet.
>>
>> This is interesting, do you have a pointer to more information on the
>> issue?
>
> Do you mean "PAR", or "VOL" or "Rumours" ?

I know what PAR and VOL are.  I'm looking for something more than a
suggestion of rumors of a bug in the Sigma decoder, i.e. does anyone
know somewhere I might at least read the rumor?

>>>Another questions. Ignoring your website does not mention MPEG-4
>>>(yet), then I noticed that it stipulates support for 'RTSP
>>>(VoD)'. Does it also supports 'RTSP Live' ? The difference is that
>>>while RTSP VoD does audio/video sync based on RTP timestamps, then
>>>RTSP Live has to sync based on RTCP (not RTSP) messages. Can your box
>>>do that ?
>> Speaking as an Amino 103/110 user, it appears to me that these models
>> so A/V sync based on PTS values in the MPEG-TS stream, using the audio
>> stream as reference.  Do the 120/130 models behave similarly?
>
> Right, but that would probably be when you play a MPEG-2 TS multicasted
> in UDP and as such not RTSP.

When playing RTSP streams, the Amino asks for a raw MPEG-TS to be
delivered over UDP.  From my experience, it seems to use exactly the
same timing method for RTSP and multicasted streams.

-- 
Måns Rullgård
mru at inprovide.com

-- 
This is the vlc mailing-list, see http://www.videolan.org/vlc/
To unsubscribe, please read http://www.videolan.org/support/lists.html