[gst-devel] Theora w/ farsight2

[Marco Ballesio]

Hi,

can you monitor a session with wireshark on the receiving side and
check the lost packets? When bandwidth usage increases you're more
likely to loose packets or receive them too in late.

Regards

2010/7/15 Miron Kunz <mironoz at mail.ru>:
> Hi,
>
> So I came to the conclusion that latency caused by encoder and network are destroying my Fs2/Theora video on the receiving end.
>
> With high (for ex 1/15) fps encoder drops many buffers and does not try to lower fps to adjust to CPU capabilities.
>
> Thanks,
> Mironoz
>
>>
>> Hi,
>> All my video/audio sinks on receiving end have sync=false. The sending part is handled by Farsight2 and it looks like sync=false is set there too.
>>
>> Thanks,
>> Mironoz
>>
>> >
>> > Hi ,
>> >
>> > Use "sync=false" property with both the sinks at sending and receiving end , and then see the behaviour .
>> >
>> >
>> >
>> > 2010/7/14 Miron Kunz <mironoz at mail.ru>
>> > Hi,
>> >
>> > My problem seems to be related to Theora encoder.
>> >
>> > With the number of discontinued buffers increasing I am likely to get distorted image on the receiving end:
>> >
>> > 0:01:55.343750000 4492 00DF2698 DEBUG theoraenc gsttheoraenc.c:829:theora_enc_is_discontinuous:<theoraen
>> > c4> Incoming TS 0:01:50.345187500 exceeds expected value 0:01:48.955312500 by too much, marking discontinuity
>> >
>> > If I increase threshold for late/discontinued buffers - the receiving end shows video w/o artifacts.
>> >
>> > I am not sure yet how to interpret the observation because I see discontinued buffers in this pipeline which still produces the fine video:
>> > gst-launch --gst-debug="theoraenc:5" dshowvideosrc!ffmpegcolorspace!theoraenc!theoradec!ffmpegcolorspace!directdrawsink
>> >
>> > One more thing - on every discontinued packet, the theora codec is deallocated and reincarnated again by theora_enc_reset(). For performance sake it looks suspicious to me.
>> >
>> > Thanks,
>> > Miron
>> >
>> >
>> >
>> >
>> >
>> >
>> > >
>> > > Hi,
>> > >
>> > > I updated to Farsight2, 0.0.20
>> > > set VER_GST=0.10.29
>> > > set VER_GST_PLUGINS_BASE=0.10.29
>> > > set VER_GST_PLUGINS_GOOD=0.10.22
>> > >
>> > >
>> > > But I am still getting distorted video when Theora codec is used.
>> > >
>> > > Looks like frames between I-frames are not properly decoded.
>> > >
>> > > Anything I can check?
>> > >
>> > > Thanks,
>> > > Mironoz
>> > >
>> > >
>> > >
>> > > > Hi,
>> > > >
>> > > > I am using Theora codec w/ farsigh2 (no Telepathy) for video conferencing and I am facing distorted video on the receiving end when using camera with relatively high resolution on the sending end. Low resolution streams are decoded alright by the receiver. I ran receiver/sender on the same host so the bandwidth should not be a problem. CPU consumption was low too.
>> > > > The artifacts in the video I see most often are small squares(up to 16x16 or so pixels) with 2 white and 1 black stripes in it.
>> > > >
>> > > > Here is versions of the gstreamer/farsight2 I am using:
>> > > >
>> > > > set VER_GST=0.10.25
>> > > > set VER_GST_PLUGINS_GL=0.10.1
>> > > > set VER_GST_PLUGINS_BASE=0.10.25
>> > > > set VER_GST_PLUGINS_GOOD=0.10.17
>> > > > set VER_GST_PLUGINS_UGLY=0.10.13
>> > > > set VER_GST_PLUGINS_BAD=0.10.17
>> > > > Farsight2 0.0.16
>> > > >
>> > > > I read on this list about incompatibilities between certain versions of the Fs and gstreamer. I wonder if I am running in it here or it is something else.
>> > > >
>> > > > Thanks,
>> > > > Miron
>> > >
>> > >
>> > > Найди все ролики Интернета в поиске по видео
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>> >
>> >
>> >
>> > --
>> > Regards,
>> >
>> > Sudarshan Bisht
>>
>>
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