RTSP stream for android devices

[Chuck Crisler]

Sounds like a job for wireshark.

On Thu, Aug 16, 2012 at 1:29 PM, Loren Rogers <loren.rogers at gmail.com>wrote:

> If the log is from the Android device, what it looks like is that the
> Android device is missing the caps negotiation (probably SDP) that's
> sent from the RTSP server.  OR the Android device is trying to open a
> file with poorly formed stream information.
>
> On Thu, Aug 16, 2012 at 1:15 PM, John Ruemker <john.ruemker at gmail.com>
> wrote:
> > I was wondering if the alawenc audio encoder is the problem, considering
> the
> > android doc states you should use AAC-LC.  However if I try to switch to
> > ffenc_aac I can't get a stream that even vlc will play.  I'm not really
> sure
> > with rtp payloader goes with ffenc_aac.  So ultimately, I decided to just
> > remove the audio stream for now and see if I could get video working.
>  VLC
> > plays it fine, but android still won't, so the issue is likely somewhere
> in
> > the x264enc part.
> >
> > The logs from the android MediaPlayer and VideoView classes are not very
> > specific.
> >
> >
> > 08-16 13:12:39.320: D/OpenGLRenderer(30587): Flushing caches (mode 0)
> > 08-16 13:12:39.350: D/OpenGLRenderer(30587): Flushing caches (mode 1)
> > 08-16 13:12:45.555: D/libEGL(30783): loaded
> /system/lib/egl/libEGL_mali.so
> > 08-16 13:12:45.555: D/libEGL(30783): loaded
> > /system/lib/egl/libGLESv1_CM_mali.so
> > 08-16 13:12:45.560: D/libEGL(30783): loaded
> > /system/lib/egl/libGLESv2_mali.so
> > 08-16 13:12:45.635: D/OpenGLRenderer(30783): Enabling debug mode 0
> > 08-16 13:12:45.645: D/MediaPlayer(30783): Couldn't open file on client
> side,
> > trying server side
> > 08-16 13:12:45.800: D/MediaPlayer(30783): getMetadata
> > 08-16 13:12:45.905: E/MediaPlayer(30783): error (1, -2147483648)
> > 08-16 13:12:45.905: E/MediaPlayer(30783): Error (1,-2147483648)
> > 08-16 13:12:45.905: D/VideoView(30783): Error: 1,-2147483648
> >
> > I guess I'll have to try and play around with the resolution, bitrates,
> etc
> > as you pointed out and see if I can make any progress there.
> >
> >
> > Thanks for your help.
> >
> > -John
> >
> >
> > On 08/16/2012 12:35 PM, Chuck Crisler wrote:
> >
> > I am not sure about the default x264enc parameters, but you need to
> insure
> > that it is using baseline, width/height/frame/bit rates all as specified
> by
> > the android. I suspect that the defaults are not what the Android wants
> and
> > probably if any is wrong the Android would reject it but VLC will deal
> with
> > it. Can you get a log from the Android to see what it doesn't like?
> >
> > On Thu, Aug 16, 2012 at 11:51 AM, John Ruemker <john.ruemker at gmail.com>
> > wrote:
> >>
> >> On 08/15/2012 12:00 PM, John Ruemker wrote:
> >>>
> >>> Hello,
> >>> I am trying to figure out a way to take a local video which may be in
> one
> >>> of a few different formats (mkv, mp4, avi) and create an rtsp stream
> that
> >>> can be viewed by android devices.  I've been playing around with
> >>> gstreamer-rtsp-server, and using the test-readme.c example can create a
> >>> stream from an mkv that is watchable in vlc, but android cannot
> process it:
> >>>
> >>>   gst_rtsp_media_factory_set_launch(factory, "( "
> >>>   "filesrc location=/home/user/project/spider.mkv ! "
> >>>   "decodebin name=dec dec. ! queue ! x264enc ! "
> >>>   "rtph264pay name=pay0 pt=96 dec. ! queue ! audioresample !
> audioconvert
> >>> ! "
> >>>   "alawenc ! rtppcmapay name=pay1 pt=97 "
> >>>   ")");
> >>>
> >>> I'm guessing the way its encoded is not supported by android:
> >>>
> >>>
> >>>
> http://developer.android.com/guide/appendix/media-formats.html#recommendations
> >>>
> >>> While I have done a good bit of reading through the gstreamer docs and
> >>> understand pipelines and such, I'll admit I don't know much about
> formats
> >>> and codecs.  What sort of pipeline should I use to encode the video and
> >>> audiostreams such that an android device would be able to play it
> back, per
> >>> the requirements listed in the above link?
> >>>
> >>> Thanks for your help.
> >>>
> >>> -John
> >>
> >>
> >> Hi,
> >> Anyone have any ideas on the above?  I'm just not sure how to go about
> >> encoding to meet the requirements that are laid out in the Android
> >> development guide.  Any assistance would be greatly appreciated.
> >>
> >> Thanks
> >>
> >> -John
> >> _______________________________________________
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> >
> >
> >
> >
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>
>
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