[Live-devel] problem (?) when outputting raw H264 stream with openRTSP

[Ross Finlayson]

>Ross Finlayson a écrit :
>>>Hi.When I capture a rtsp h264 stream with 
>>>openRTSP and save it into a .mp4 file (-4 
>>>option), I can reproduce it with common 
>>>players (vlc, mplayer etc.)However, if I save 
>>>the captured stream into a "raw" file (i.e 
>>>video-H264-1) I cannot see it with any player. 
>>>Why ?
>>
>>Because those media players (which are not our 
>>software, BTW) happen not to support playing a 
>>'raw' H.264 file.
>>
>Hi everybody.
>Did you say that common players like vlc can not read h264 raw stream ?

No, I said that they cannot play a H.264 raw 
*file* (but you'd have to ask their developers to 
be sure).


>  So if I stream a H264VideoRTP, I can not read 
>my stream with those media players.

Yes you can (at least with VLC), because it 
implements RTSP/RTP, and the RTP payload format 
for H.264.


>Another point. I just want to stream on RTP and 
>not on RTSP. Can I do that with liveMedia ? All 
>of your example implement RTSP Server but I do 
>not that on my implementation. This is maybe why 
>I can not read my stream.. What do you think 
>about that ?

Yes, that's quite possible, because without a 
RTSP server, the client (media player) might not 
get the SPS and PPS NAL unit data that it needs 
to properly decode the H.264 stream.

You should be using a RTSP server.
-- 

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/