[gst-devel] Unable to stream H264 over RTP

[thx1138]

On 5/12/09 8:59 AM, "Fabio Estevam" <fabioestevam at yahoo.com> wrote:

> 
> --- On Fri, 5/8/09, ScreenName01 <lwhlee at hotmail.com> wrote:
> 
>> From: ScreenName01 <lwhlee at hotmail.com>
>> Subject: [gst-devel]  Unable to stream H264 over RTP
>> To: gstreamer-devel at lists.sourceforge.net
>> Date: Friday, May 8, 2009, 2:37 PM
>> Hello all,
>> 
>>   I've had pretty good success with RTSP server and
>> able to stream H264,
>> H263 and Mpeg4 streams over to VLC for instance.
>> 
>>   I want to maximize my options and tried straight TCP for
>> instance and was
>> only able to get the ffplay player to play the tcp stream
>> but only for H263.
>> This is probably irrelevant information though.
>> 
>>   What I'm trying to get working is RTP.  So I'm
>> able to stream MP4 using
>> the following pipeline where VPU encoder is a hardware
>> based encoder capable
>> of encoding mp4, h264 and h263.
>> 
>> gst-launch-0.10 -v v4l2src ! vpuenc codec-type=std_mpeg4
>> width=640
>> height=480 ! rtpmp4vpay ! udpsink host=<stream_to_ip>
>> port=5000
>> 
>>   With the following SDP file:
>> ---  SDP START ---
>> v=0
>> s=Session streamed with GStreamer
>> i=live
>> t=0 0
>> a=tool:Gstreamer
>> m=video 5000 RTP/AVP 96
>> b=RR:0
>> c=IN IP4 127.0.0.1
>> a=rtpmap:96 MP4V-ES/90000
>> a=fmtp:96 profile-level-id=4;
>> config=000001b004000001b59113000001000000012000c888800f514043c14103
>> a=cliprect:0,0,480,640
>> a=framesize:96 640-48
>> ---  SDP END ---
>> 
>>   I can launch this SDP file with QuickTime and VLC and it
>> streams fine.
>> 
>>   The problem is I cannot stream H264 or H263.  I use the
>> same pipeline as
>> above with codec-type parameter changed to h264 or H263 and
>> using a similar
>> SDP file (without the a=fmtp ... line) and changed the
>> rtpmap from MP4V-ES
>> to H264/H263 but I've had no luck.
>> 
>>   I end up with just a plain green screen in QuickTime.
>> VLC doesn't even
>> play the stream.
>> 
>>   I've tried to modify the stream to something using
>> RTP manager.  To
>> something like below for instance.
>> 
>> gst-launch -v gstrtpbin name=rtpbin latency=50 v4l2src !
>> vpuenc
>> codec-type=std_avc width=640 height=480 ! rtph264pay pt=96
>> mtu=1438 !
>> rtpbin.send_rtp_sink_0 rtpbin.send_rtp_src_0 ! udpsink
>> port=5000
>> host=<stream_to_ip> ts-offset=0
>> rtpbin.send_rtcp_src_0 ! udpsink port=5001
>> host=<stream_to_ip> sync=false async=false udpsrc
>> port=5005 !
>> rtpbin.recv_rtcp_sink_0
>> 
>>   Using just a plain SDP file like below (found in GIT as
>> an example):
>> --- SDP Start ---
>> v=0
>> o=- 1188340656180883 1 IN IP4 127.0.0.1
>> s=Session streamed by GStreamer
>> i=server.sh
>> t=0 0
>> a=tool:GStreamer
>> a=type:broadcast
>> m=video 5000 RTP/AVP 96
>> c=IN IP4 127.0.0.1
>> a=rtpmap:96 H264/90000
>> --- SDP End ---
>> 
>>   QuickTime is stuck waiting to connect, VLC is unable to
>> connect as well.
>> 
>>   Is there something I can try to get it to stream H264
>> over just RTP.  I
>> know the RTSP server is able to stream any of the three
>> formats
>> (H264/H263/MP4) so it must be generating the proper SDP
>> file I'm guessing?
>> Any suggestions?
>> 
>> Thanks in advance.  Any and all suggestions welcomed and
>> appreciated!
> 
> I assume you are using MX27 processor, correct? If so, please check the
> following application note:
> http://www.freescale.com/files/dsp/doc/app_note/AN3677.pdf
> 
> Regards,
> 
> Fabio Estevam
> 
> 
> 
>     
> 
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Hi Fabio,

This is a note from Terry Shultz saying Hello.

My home email is thx1138 at earthlink.net if you want to say howdy.

Regards,

Terry