[gst-devel] streaming from VLC to gstreamer

[Eric Zhang]

Hi, gstreamer-devel:

    You should consider an element named "gstrtpbin" and add "gstrtpbin"
between udpsrc and decodebin.

Eric Zhang

2008/12/19 Anand Sivaram <aspnair at gmail.com>

> Hello all,
>
> I am trying to play an h264/aac file streamed by VLC player using
> gstreamer.
> Since it was not getting played out, I also tried streaming
> an mpeg1/mp2 file.
>
> On the TX side I used vlc to stream the file using mpeg2-ts encapsulation
>
> vlc --mtu 1200 -vvv Videofile \
>  --sout '#duplicate{dst=rtp{mux=ts,dst=127.0.0.1,port=25000}}'
>
> where the Videofile could be an h264/aac (mp4 extension) file
> or an mpeg1/mp2 (mpg extension) file.
>
> On the RX side I started gst-launch
> gst-launch -v udpsrc port=25000 ! rtpmp2tdepay ! decodebin name=decoder \
>  decoder. ! ffmpegcolorspace ! autovideosink decoder. !  autoaudiosink
> (when streaming one mpg file)
>
> gst-launch -v udpsrc port=25000 ! rtph264depay ! decodebin name=decoder \
>  decoder. ! ffmpegcolorspace ! autovideosink decoder. !  autoaudiosink
> (when streaming one mp4 file)
>
> ------
> This is what the observation is.
> When I stream somefile.mpg both video and audio outputs are extremely
> jittery.
> When I stream somefile.mp4 there is no video or audio outputs at all.
>
> Any idea why the mp4 stream is not getting played out?  Has anyone
> tried streaming from VLC to gstreamer?
>
> But, on the otherhand if VLC is used on the RX side
> vlc rtp://@:25000
> everything is working.
> ------
>
> == This is the output of gstreamer when I tried to stream somefile.mp4
>
> sink=decodervrudecoder.r!=ffmpegcolorspacee!aautovideosink decoder. !
> autoaudios
> Setting pipeline to PAUSED ...
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
>
> /pipeline0/decoder/typefind.src: caps = video/mpegts,
> systemstream=(boolean)true, packetsize=(int)188
> /pipeline0/decoder/flutsdemux0.sink: caps = video/mpegts,
> systemstream=(boolean)true, packetsize=(int)188
> /pipeline0/decoder/flutsdemux0: pat-info = ((GValueArray*) 0x25fc660)
> /pipeline0/decoder/flutsdemux0: pmt-info = ((FluTsPmtInfo*) 0x25fc130)
> /pipeline0/decoder/queue0.sink: caps = audio/mpeg, mpegversion=(int)4
> /pipeline0/decoder/queue0.src: caps = audio/mpeg, mpegversion=(int)4
> /pipeline0/decoder/faad0.sink: caps = audio/mpeg, mpegversion=(int)4
> /pipeline0/decoder/queue1.sink: caps = video/x-h264
> /pipeline0/decoder/queue1.src: caps = video/x-h264
> /pipeline0/decoder/ffdec_h2640.sink: caps = video/x-h264
> /pipeline0/decoder/faad0.src: caps = audio/x-raw-int,
> endianness=(int)1234, signed=(boolean)true, width=(int)16,
> depth=(int)16, rate=(int)48000, channels=(int)2
> /pipeline0/autoaudiosink0/autoaudiosink0-actual-sink-alsa.sink: caps =
> audio/x-raw-int, endianness=(int)1234, signed=(boolean)true,
> width=(int)16, depth=(int)16, rate=(int)48000, channels=(int)2
> /pipeline0/autoaudiosink0.sink: caps = audio/x-raw-int,
> endianness=(int)1234, signed=(boolean)true, width=(int)16,
> depth=(int)16, rate=(int)48000, channels=(int)2
> /pipeline0/decoder.src0: caps = audio/x-raw-int, endianness=(int)1234,
> signed=(boolean)true, width=(int)16, depth=(int)16, rate=(int)48000,
> channels=(int)2
> /pipeline0/decoder.src0.proxypad3: caps = audio/x-raw-int,
> endianness=(int)1234, signed=(boolean)true, width=(int)16,
> depth=(int)16, rate=(int)48000, channels=(int)2
> /pipeline0/autoaudiosink0.sink: caps = audio/x-raw-int,
> endianness=(int)1234, signed=(boolean)true, width=(int)16,
> depth=(int)16, rate=(int)48000, channels=(int)2
> /pipeline0/autoaudiosink0.sink.proxypad2: caps = audio/x-raw-int,
> endianness=(int)1234, signed=(boolean)true, width=(int)16,
> depth=(int)16, rate=(int)48000, channels=(int)2
>
> Thanks and Regards
>
> Anand
>
>
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