LOSS LESS STREAM RTP

[aziatedu13]

Hello,
Is there an LOSS LESS FORMAT which cant play vlc ??
This LOSS LESSS FORMATED STREAM is send on RTP.
I don't manage to send a RTP STREAM compressed MJPEG, readable with vlc...
HUFFYUF is'nt readable neither.....

ANY solution ???

THX.

[Rémi Denis-Courmont]

There is no payload format for MJPEG over RTP, as far as I know. Besides, MJPEG is not lossless, and RTP is not lossless either, since it runs over lossy UDP.

[aziatedu13]

I explain better my probleme , I know there exist a few codec who don't lose any quality of picture, like Ljpeg, huffyuf, RLE,
and i would like send a grabed video with this lossless codec via udp/rtp.
IS this possible ????
even if UDP is not sure to obtain all the transmit packet, its work well.
Thx for your answer.

[Rémi Denis-Courmont]

No. You should really use a TCP-based protocol if you want to use lossless (e.g. HTTP).

[aziatedu13]

ok,
But is there a reason ???
Quality of picture and codec don't have any commun point with the protocole transport ( maybe i am wrong ),
So why RTP cannot stream a lossless encoded picture ?
Thx.

[Rémi Denis-Courmont]

RTP can only convey codecs for which an RTP payload format has been defined

[aziatedu13]

Hello,

I have find some web information which explain that RTP payload format is able to stream H.264... I don't know if H.264 lossless is the same, but this page http://www.rfc-editor.org/rfc/rfc3984.txt , deals with H.264 RTP payload format..
What do you think about this ?
Or have you a web site which explain that LOSSLESS format can be streamed by rtp
Thx.

[xtophe]

h264 is not lossless

And as Remi already said:
There is no point bothering with a lossless codec if you're streamming it over a lossy protocol.