[gst-devel] MPEG4 Compliant Simple Profile

Mailing List SVR lists at svrinformatica.it
Mon Nov 9 17:39:56 CET 2009 

In data lunedì 9 novembre 2009 17:27:58, Edward Hervey ha scritto:
: > On Mon, 2009-11-09 at 15:45 +0100, Mailing List SVR wrote:
> > In data lunedì 9 novembre 2009 14:21:38, Kapil Agrawal ha scritto:
> > : > if the data is send as rtp, then you have to use  proper rtp
> > : > depayloader
> > >
> > > after udpsrc and then store the file.
> >
> > this is the point: the stream seems not rtp payloded or at least
> > gstreamer doesn't recognize it as rtp
> >
> > gstbasertpdepayload.c(360): gst_base_rtp_depayload_chain ():
> > /GstPipeline:pipeline0/GstRtpMP4VDepay:rtpmp4vdepay0:
> > Not RTP format was negotiated
> >
> > but the stream would be rtp according to verint,
> 
>   You can't use rtp without the specification of the streams. Those
> specifications normally come in a sdp file.

Yes I know, I asked to the manufacter (verint) for the sdp but their answer 
was that the sdp was not available and I have to use their sdk (windows dll) 
to integrate the stream, but I'm on linux. 
However I think the stream is in a standard format, my reseller was able to 
see the video over rtp with a decoder of a different manufacter (not verint). 
So I need a way to reverse enginering the sdp/ get gstreamer caps 

> 
>   If your device supports it, just use rtsp (which provides those stream
> description).

No :-(, no rtsp only mpeg4 simpe profile over udp/rtp

> 
> > thanks
> > Nicola
> >
> > > On Mon, Nov 9, 2009 at 6:39 PM, Mailing List SVR
> >
> > <lists at svrinformatica.it>wrote:
> > > > In data lunedì 9 novembre 2009 13:51:20, Kapil Agrawal ha scritto:
> > > > : > Maybe you can just record the encoded stream and then play it
> > > > : > using
> > > >
> > > > other
> > > >
> > > > > players like vlc,
> > > >
> > > > I tryed:
> > > >
> > > > gst-launch-0.10 -e -v udpsrc port=2544 ! filesink location=test.mp4
> > > >
> > > > but the resulting test.mp4 file is not playable with vlc or mplayer
> > > >
> > > > > since ffdec_mpeg4 isnt a very recommended decoder.
> > > >
> > > > what other choices are available to decode mpeg4 with gstreamer?
> > > >
> > > > > Or
> > > > >  even better is file a bug attaching a small video clip.
> > > > >
> > > > > regards
> > > > > kapil
> > > > >
> > > > > On Mon, Nov 9, 2009 at 3:15 PM, Mailing List SVR
> > > >
> > > > <lists at svrinformatica.it>wrote:
> > > > > > Hi all,
> > > > > >
> > > > > > I'm trying to see the video from a verint nextiva s1970e encoder,
> > > > > > according to
> > > > > > the manufacter they send an "mpeg4 compliant simple profile
> > > > > > stream over rtp/udp",
> > > > > >
> > > > > > I tryed the following pipeline
> > > > > >
> > > > > > gst-launch-0.10 -v udpsrc port=2544 ! decodebin ! autovideosink
> > > > > >
> > > > > > here is the output:
> > > > > >
> > > > > > Setting pipeline to PAUSED ...
> > > > > > Pipeline is live and does not need PREROLL ...
> > > > > > Setting pipeline to PLAYING ...
> > > > > > New clock: GstSystemClock
> > > >
> > > > /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typ
> > > >efin
> > > >
> > > > > >d.GstPad:src: caps = video/mpeg, systemstream=(boolean)false,
> > > > > > mpegversion=(int)4
> > > >
> > > > /GstPipeline:pipeline0/GstDecodeBin:decodebin0/ffdec_mpeg4:ffdec_mpeg
> > > >40.G
> > > >
> > > > > >stPad:sink: caps = video/mpeg, systemstream=(boolean)false,
> > > > > > mpegversion=(int)4
> > > > > > /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:src0:
> > > > > > caps = video/x-raw-yuv, width=(int)0, height=(int)0,
> > > > > > framerate=(fraction)25/1, format=(fourcc)I420,
> > > > > > interlaced=(boolean)false
> > > >
> > > > /GstPipeline:pipeline0/GstDecodeBin:decodebin0/ffdec_mpeg4:ffdec_mpeg
> > > >40.G
> > > >
> > > > > >stPad:src: caps = video/x-raw-yuv, width=(int)0, height=(int)0,
> > > > > > framerate=(fraction)25/1,
> > > > > > format=(fourcc)I420, interlaced=(boolean)false
> > > > > > /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:src0:
> > > > > > caps = video/x-raw-yuv, width=(int)704, height=(int)576,
> > > > > > framerate=(fraction)30000/1,
> > > > > > format=(fourcc)I420, interlaced=(boolean)false, pixel-aspect-
> > > > > > ratio=(fraction)12/11
> > > >
> > > > /GstPipeline:pipeline0/GstDecodeBin:decodebin0/ffdec_mpeg4:ffdec_mpeg
> > > >40.G
> > > >
> > > > > >stPad:src: caps = video/x-raw-yuv, width=(int)704,
> > > > > > height=(int)576, framerate=(fraction)30000/1,
> > > > > > format=(fourcc)I420,
> > > > > > interlaced=(boolean)false,
> > > > > > pixel-aspect-ratio=(fraction)12/11
> > > >
> > > > /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink
> > > >:aut
> > > >
> > > > > >ovideosink0- actual-sink-xvimage.GstPad:sink: caps =
> > > > > > video/x-raw-yuv, width=(int)704, height=(int)576,
> > > > > > framerate=(fraction)30000/1, format=(fourcc)I420,
> > > > > > interlaced=(boolean)false,
> > > > > > pixel-aspect-ratio=(fraction)12/11
> > > >
> > > > 
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink:
> > > > > > caps
> > > > > > = video/x-raw-yuv, width=(int)704, height=(int)576,
> > > > > > framerate=(fraction)30000/1, format=(fourcc)I420,
> > > > > > interlaced=(boolean)false,
> > > > > > pixel-aspect-ratio=(fraction)12/11
> > > >
> > > > /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:src0.GstPr
> > > >oxyP
> > > >
> > > > > >ad:proxypad2: caps = video/x-raw-yuv, width=(int)704,
> > > > > > height=(int)576, framerate=(fraction)30000/1,
> > > > > > format=(fourcc)I420,
> > > > > > interlaced=(boolean)false,
> > > > > > pixel-aspect-ratio=(fraction)12/11
> > > >
> > > > /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:si
> > > >nk.G
> > > >
> > > > > >stProxyPad:proxypad1: caps = video/x-raw-yuv, width=(int)704,
> > > > > > height=(int)576,
> > > > > > framerate=(fraction)30000/1, format=(fourcc)I420,
> > > > > > interlaced=(boolean)false,
> > > > > > pixel-aspect-ratio=(fraction)12/11
> > > > > > ERROR: from element
> > > >
> > > > /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink
> > > >:aut
> > > >
> > > > > >ovideosink0- actual-sink-xvimage: Output window was closed
> > > > > > Additional debug info:
> > > > > > xvimagesink.c(1297): gst_xvimagesink_handle_xevents ():
> > > >
> > > > /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink
> > > >:aut
> > > >
> > > > > >ovideosink0- actual-sink-xvimage
> > > > > > Execution ended after 5239190321 ns.
> > > > > > Setting pipeline to PAUSED ...
> > > > > > Setting pipeline to READY ...
> > > >
> > > > /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink
> > > >:aut
> > > >
> > > > > >ovideosink0- actual-sink-xvimage.GstPad:sink: caps = NULL
> > > >
> > > > 
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink:
> > > > > > caps
> > > > > > = NULL
> > > > > > /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:src0:
> > > > > > caps = NULL
> > > >
> > > > /GstPipeline:pipeline0/GstDecodeBin:decodebin0/ffdec_mpeg4:ffdec_mpeg
> > > >40.G
> > > >
> > > > > >stPad:src: caps = NULL
> > > >
> > > > /GstPipeline:pipeline0/GstDecodeBin:decodebin0/ffdec_mpeg4:ffdec_mpeg
> > > >40.G
> > > >
> > > > > >stPad:sink: caps = NULL
> > > >
> > > > /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typ
> > > >efin
> > > >
> > > > > >d.GstPad:src: caps = NULL
> > > > > > Setting pipeline to NULL ...
> > > > > > Freeing pipeline ...
> > > > > >
> > > > > > but the video is distorced as you can see in the image attached,
> > > > > > I
> > > >
> > > > setted
> > > >
> > > > > > the
> > > > > > intra interval (I Frame every X Frames) to 5 but also changing
> > > > > > this
> > > >
> > > > value
> > > >
> > > > > > to 0
> > > > > > or 120 make no difference,
> > > > > >
> > > > > > any hints?
> > > > > >
> > > > > > Nicola
> > > >
> > > > ---------------------------------------------------------------------
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