[dvblast-devel] Video freezes

[Вячеслав Адаманов]

Hello, im have some truble. Cam module and dvb card  100% works.
This can be seen on the satellite at 4.8E transponder 12130v when
inserted in the cam with card viacess.
Without cam FTA channel normally stream.
when the channel fray in the log displays:


debug: adding first CAPMT for SID 6620 on session 3
debug: adding CAPMT for SID 6630 on session 3
debug: adding CAPMT for SID 6680 on session 3
warning: no compatible scrambling system for SID 6680 on session 3
warning: too many errors for stream 127.0.0.1:1051, resetting
debug: closing ConditionalAccess session (3)
warning: TS discontinuity
warning: TS discontinuity
warning: TS discontinuity
warning: TS discontinuity
warning: TS discontinuity
warning: TS discontinuity
warning: TS discontinuity
debug: CI slot 0 is active
debug: opening ResourceManager session (1)
debug: opening ApplicationInformation session (2)
info: CAM: PCAM V4.3, 01, 02CA, 3000
debug: opening ConditionalAccess session (3)


2010/9/22 Metin <olgun.metin at gmail.com>:
> I guess this is caused by CAM module. Did you encounter the same problem
> with a clear channel?
>
> Regards,
> Metin
>
> On 22-Sep-10 2:41 PM, Jaroslav Klaus wrote:
>
> Hi,
>
> I'm still facing problem with video that freezes once a 10-20s. The source
> is DVB-S captured by modified (to bypass av7110) Technotrend 2300 card and
> descrambled by proCAM.
>
> Here is the sample:
> http://bit.ly/aTZ3db ... 61MB pcap file with multicast group 239.0.1.1:52000
> http://bit.ly/aoJZiB ... 52MB transport stream from the pcap file above
>
> The stream has 10 CC errors total at the beginning and near the end but they
> are not related to video freezes (for instance during american football
> commercial - old lady and man falling down)
>
> I've tested 2 STBs. Both had problem. And also tested several software
> players (TS file was read from filesystem not from network):
>
> VLC 1.1.4 ... freezes at the same position as both STBs
> ffplay 0.6 ... smooth
> elecard mpeg player ... smooth
>
> I was trying several analyzers (I don't know if I can use them properly):
>
> TSReader ... no interesting information (just found 5CC and the beginning
> and 5 near end of sample)
> StreamGURU ... found PCR accuracy problem (>500ns, <-500ns) and PCR interval
> problem (30% >10ms)
> PixStream/Cisco ... a lot of "Temporary reference is not consecutive","Field
> order not consecutive" and "Video buffer: overflow+underflow"  messages,
> video buffer bars (min,max) are often red - more often than freezes.
>
> Can I ask you what you think the problem is? If videplayer reads TS from
> filesystem the jitter introduced by kernel(DMA) and dvblast (network) should
> not affect the stream, right?
> If PCR is the real issue(?) it's not CAM neither DMA neither dvblast issue
> but only encoder issue on broadcaster side, isn't it? What would solve the
> issue apart from fixing encoder? Increase videobuffer?
>
> Thanks for you comment.
> Jaroslav
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>
>
>
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>



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