929907 - [Rtsp] Support Rtsp protocol in SDP (session description protocl) format

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: RTSP, defect)

Description

[Vincent Chang[:vchang][changyihsin]]

When receiving a http response with SDP data, we should be able to open the video app to play the RTSP streaming. RTSP server may not reply the SDP via Rtsp protocol in this case. Instead of that, RTSP client sends RTSP SETUP message to server for both audio and video tracks respectively, and send RTSP PLAY message to start RTP/RTCP.  

Below is an example for SDP.

v=0
o=StreamingServer 3591495871 1276526812000 IN IP4 127.0.0.1
s=/102400_h263_amrnb-12200_10fps_QCIF.3gp
u=http:///
e=admin@
c=IN IP4 0.0.0.0
b=AS:83
t=0 0
a=control:rtsp://xxx.xxx.xxx.xxx:554/rtspLink.3gp
a=range:npt=0-249.84000
m=video 0 RTP/AVP 96
b=AS:71
a=3GPP-Adaptation-Support:1
a=rtpmap:96 H263-1998/90000
a=control:trackID=65736
a=cliprect:0,0,144,176
a=framesize:96 176-144
m=audio 0 RTP/AVP 97
b=AS:12
a=3GPP-Adaptation-Support:1
a=rtpmap:97 AMR/8000/1
a=control:trackID=65636
a=fmtp:97 octet-align

Comment 1

[Ken Chang[:kenkai]]

Blocking 1.4 RTSP feature.

Comment 2

[Ken Chang[:kenkai]]

It blocks 1.4 feature.

Comment 3

[Ethan Tseng [:ethan]]

Hi Vincent, is this bug describing a scenario that RTSP server replies SDP through HTTP response?
How do we create such scenario?
As I know, RTSP session is initialized from the client side, should the RTSP client send HTTP request first?

Comment 4

[Ken Chang[:kenkai]]

ni? reporter.

Comment 5

[Vincent Chang[:vchang][changyihsin]]

The use case should be when you open a file contains SDP in the browser. If doing the same thing in  the PC, the vlc will be launched and play the Rtsp streaming based on the url in "a=control" header. 

     a=control:rtsp://xxx.xxx.xxx.xxx:554/rtspLink.3gp

Comment 6

[Wesley Huang [:wesley_huang] (EPM) (NI me)]

depends on carrier requirement. set to 1.4? at this moment.

Comment 7

[Wesley Huang [:wesley_huang] (EPM) (NI me)]

RTSP 1.4 should focus on bug fixing.

Comment 8

[Ethan Tseng [:ethan]]

Attachment: rtsp-sdp.pcap

Packets captured while opening a video via SDP by VLC player.

Comment 10

[ChengLin.Wu]

Is there a planning to support SDP on FFOS2.0.

Comment 11

[Ethan Tseng [:ethan]]

(In reply to ChengLin.Wu from comment #10)
> Is there a planning to support SDP on FFOS2.0.

ChengLin,

No. We don't plan to add RTSP features on FFOS 2.0.
The possible version is 2.2 or later. :)

Comment 12

[howie [:howie]]

This is a new feature which should not block, the work involves in non-trivial changes.

Comment 13

[Jonathan Hao (inactive) [:jhao]]

SDP links can be found in https://bugzil.la/995879#c0

Link: http://tiv-dmz.homeip.net
User: VQGTester
Password: VQG8017

Then, go to MSM -> MSM.1-6 - Basic Video Streaming.

I clicked the 7th link in Firefox Desktop on Ubuntu and OS X repectively. VLC player will pop up and play the video. The 8th link also worked but it's file extension is .3gp instead of .sdp. The other links didn't work.

I also tried with my Android 5.0 phone. I could open the 7th link by choosing "Open with Photos" or "Open with Video Player", but "Open with VLC" crashed.

Comment 14

[Jonathan Hao (inactive) [:jhao]]

I later found that link #7 is merely a 302 redirect to an RTSP link.

Comment 15

[Ethan Tseng [:ethan]]

No one is actually working on RTSP for FxOS right now.