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Hi!
<br>
<br>
Can anybody help me to solve a strange problem.
<br>
We have a straming video system, that use gstreamer. I sortly explain
how it is works.
<br>
<br>
<tt>*********** ******** ***** *********************
<br>
<b class="moz-txt-star"><span class="moz-txt-tag">*</span>DV source<span
class="moz-txt-tag">*</span></b>--- <b class="moz-txt-star"><span
class="moz-txt-tag">*</span>stream<span class="moz-txt-tag">*</span></b>
----<b class="moz-txt-star"><span class="moz-txt-tag">*</span>DSS<span
class="moz-txt-tag">*</span></b>----*Quicktime player(s)*
<br>
*********** ******** ***** *********************
<br>
|
<br>
+-******** ********* ************ **********
<br>
<b class="moz-txt-star"><span class="moz-txt-tag">*</span>Record<span
class="moz-txt-tag">*</span></b>---<b class="moz-txt-star"><span
class="moz-txt-tag">*</span>m4v,aac<span class="moz-txt-tag">*</span></b>---<b
class="moz-txt-star"><span class="moz-txt-tag">*</span>mp4creator<span
class="moz-txt-tag">*</span></b>---<b class="moz-txt-star"><span
class="moz-txt-tag">*</span>mp4 file<span class="moz-txt-tag">*</span></b>
<br>
******** ********* ************ **********
</tt><br>
<br>
We have an NTSC DV source, it is streamed (computter locally) by a
gstreamer command to a Darwin Streaming Server.
<br>
We use the DSS reflector modul for live view. In the movie folder of
the DSS there is an sdp file.
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With Quicktime Player we can connect to the DSS (an URL like this
rtsp://192.168.0.1/s1.sdp) , and stream is reflecting.
<br>
However after about 10 minutes the audio channel become erratic, 1
minute later it is completly muted. The video woks fine.
<br>
<br>
We have also a recording channel, it is also use gstreamer to writes to
the disk the m4v video and the aac audio packets.
<br>
After the recording finished these files are processed by the
mp4creator command, and the result mp4 file also works fine.
<br>
There is no A/V synch, or any other issue with it. Quicktime can play
these files without any problem.
<br>
<br>
So my queston is, whitch system component (and why) produce the audio
drop (after 10 minutes) in the live view.
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<br>
The stream command look like this:
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gst-launch -v \
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dv1394src guid=$guid ! \
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dvdemux name=dv ! \
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queue ! \
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ffdec_dvvideo ! \
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videorate ! \
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ffmpegcolorspace ! \
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ffdeinterlace ! \
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videoscale ! \
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video/x-raw-yuv,width=640,height=480 ! \
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ffenc_mpeg4 me-method=4 qmin=1 qmax=8 gop-size=15 ! \
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rtpmp4vpay ! \
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tee name=rtpvtee ! \
<br>
udpsink host=localhost port=$stream_v_port rtpvtee. ! \
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udpsink host=localhost port=$rec_v_port dv. ! \
<br>
queue ! \
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audioconvert ! \
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audioresample ! \
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audio/x-raw-int,rate=22050,channels=1 ! \
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tee name=rawaudio ! \
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faac outputformat=0 bitrate=65536 profile=1 ! \
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rtpmp4gpay pt=97 ! \
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udpsink host=localhost port=$stream_a_port rawaudio. ! \
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faac outputformat=1 profile=1 ! \
<br>
rtpmp4gpay pt=97 ! \
<br>
udpsink host=localhost port=$rec_a_port
<br>
<br>
Thanks for your Help!
<br>
<br>
Gergely, Nemeth
<br>
<br>
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