CPU Usage excessive. TSDemux->MPEG2->resize->mpeg4->tsmux->send

[Richard]

Hi All,

thanks... I attached the oprofile output in pastebin.. (unfortunately
not using DEBUG ffmpeg libraries).. I am on that task now and praying
I dont hit the link time reference problems with mismatching
libraries.

http://pastebin.com/9BYG48ia

As to the deinterlace, I have tried with and without :P .. didnt make
much difference.

Richard

On 4 May 2012 16:30, Andreas Tunek <andreas.tunek at gmail.com> wrote:
>
> On May 4, 2012 5:24 PM, "Nicolas Dufresne"
> <nicolas.dufresne at collabora.co.uk> wrote:
>>
>> Le vendredi 04 mai 2012 à 14:10 +0100, Richard a écrit :
>> > Hi All,
>> Hi,
>> >
>> > I am running a DVB->Transcode->MPEG4->stream solution and I am getting
>> > really bad CPU usage.
>> >
>> >  3659 root      20   0  386m  37m 9220 S  134  1.4   0:27.47 DVBStream
>> > According to top, its using 134% !... when no transcode is taking
>> > place (DVB->IP SEND) top reports 5% CPU usage.
>>
>> From my observation, this is the mpegvideoparse element that is using
>> too much CPU for what it is doing. You can help us by confirming this
>> observation. I came to that conclusion by running oprofile over my
>> pipeline. The symbole that was using all the CPU was
>> scan_for_start_code() within the mpegvideo parser.
>>
>> Let me know if that is the same issue, that would greatly help. Please
>> report any useful information on the bug report,
>> https://bugzilla.gnome.org/show_bug.cgi?id=672701
>>
>> cheers,
>> Nicolas
>>
>>
>
> Is it deinterlacing? That takes quite a bit of cpu.....
>
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