Did you monitor the CPU usage for the different settings?
----- Oorspronkelijk bericht -----
From: Justin Wetherell <[EMAIL PROTECTED]>
To: freevo-devel@lists.sourceforge.net
Date: 22-Apr-2007 21:17
Subject: Re: [Freevo-devel] ivtv problems (slightly OT?)
> After further testing, it seems like it's a combo of aspect and bframes.
>
> Setting aspect to 2 and bframes to 3, REALLY makes the video jumpy
> Setting aspect to 1 and bframes to 3, KIND of makes the video jumpy
> Setting aspect to 2 and bframes to 2, Still jumpy but not as bad as line
> above
> Setting aspect to 1 and bframes to 2, very smooth
>
> Lesson learned!
>
> On 4/22/07, Justin Wetherell <[EMAIL PROTECTED]> wrote:
> >
> > At this point, I'm not really sure why it works but here is the debug I
> > used to solve the problem.
> >
> > WORKING DEBUG
> > 2007/04/22 14:54 EDT [-] CODEC::aspect: 1
> > 2007/04/22 14:54 EDT [-] CODEC::audio_bitmask: 0x69
> > 2007/04/22 14:54 EDT [-] CODEC::bfrmes: 2
> > 2007/04/22 14:54 EDT [-] CODEC::bitrate_mode: 0
> > 2007/04/22 14:54 EDT [-] CODEC::bitrate: 6000000
> > 2007/04/22 14:54 EDT [-] CODEC::bitrate_peak: 8000000
> > 2007/04/22 14:54 EDT [-] CODEC::dnr_mode: 0
> > 2007/04/22 14:54 EDT [-] CODEC::dnr_spatial: 0
> > 2007/04/22 14:54 EDT [-] CODEC::dnr_temporal: 0
> > 2007/04/22 14:54 EDT [-] CODEC::dnr_type: 0
> > 2007/04/22 14:54 EDT [-] CODEC::framerate: 0
> > 2007/04/22 14:54 EDT [-] CODEC::framespergop: 15
> > 2007/04/22 14:54 EDT [-] CODEC::gop_closure: 1
> > 2007/04/22 14:54 EDT [-] CODEC::pulldown: 0
> > 2007/04/22 14:54 EDT [-] CODEC::stream_type: 0
> >
> > NOT WORKING DEBUG
> > 2007/04/22 14:54 EDT [-] CODEC::aspect: 2
> > 2007/04/22 14:54 EDT [-] CODEC::audio_bitmask: 0x69
> > 2007/04/22 14:54 EDT [-] CODEC::bfrmes: 3
> > 2007/04/22 14:54 EDT [-] CODEC::bitrate_mode: 0
> > 2007/04/22 14:54 EDT [-] CODEC::bitrate: 4000000
> > 2007/04/22 14:54 EDT [-] CODEC::bitrate_peak: 4000000
> > 2007/04/22 14:54 EDT [-] CODEC::dnr_mode: 0
> > 2007/04/22 14:54 EDT [-] CODEC::dnr_spatial: 0
> > 2007/04/22 14:54 EDT [-] CODEC::dnr_temporal: 0
> > 2007/04/22 14:54 EDT [-] CODEC::dnr_type: 0
> > 2007/04/22 14:54 EDT [-] CODEC::framerate: 0
> > 2007/04/22 14:54 EDT [-] CODEC::framespergop: 15
> > 2007/04/22 14:54 EDT [-] CODEC::gop_closure: 1
> > 2007/04/22 14:54 EDT [-] CODEC::pulldown: 0
> > 2007/04/22 14:54 EDT [-] CODEC::stream_type: 0
> >
> > I basically just set the TV_IVTV options to the first set above and it
> > started working. I got those options by looking at the "default" options
> > that were set when I modprobed ivtv. I originally thought it might be the
> > "aspect" but I changed that to 2 and it still worked, I think it might be
> > the b-frames but I have to futhur test that. But all in all, it's working
> > again.
> >
> > Here is my current TV_IVTV options for kernel 2.6.18.8 with ivtv driver
> > 0.10.1
> >
> > TV_IVTV_OPTIONS = {
> > 'input' : 4,
> > 'resolution' : '720x480',
> > 'aspect' : 1,
> > 'audio_bitmask' : 233,
> > 'bframes' : 2,
> > 'bitrate_mode' : 0,
> > 'bitrate' : 6000000,
> > 'bitrate_peak' : 8000000,
> > 'dnr_mode' : 0,
> > 'dnr_spatial' : 0,
> > 'dnr_temporal' : 0,
> > 'dnr_type' : 0,
> > 'framerate' : 0,
> > 'framespergop' : 15,
> > 'gop_closure' : 1,
> > 'pulldown' : 0,
> > 'stream_type' : 0,
> > }
> >
> > On 4/22/07, Duncan Webb < [EMAIL PROTECTED]> wrote:
> > >
> > > Justin Wetherell wrote:
> > > > Actually, that wasn't the solution. Apparently Freevo is somewhat at
> > > > fault although I haven't found a solution yet.
> > >
> > > Hmm, what do you mean by shaky?
> > > If we set the DEBUG level to 3 or more freevo will report the ivtv and
> > > v4l ioctls that are being sent.
> > >
> > > I've noticed that a PVR-350 recordings are not smooth but the PVR-500
> > > are smooth but the quality is poorer than the 350.
> > >
> > > My first guess is that your analysis is correct and it may be a setting
> > > that is either incorrect or causes the driver to misbehave.
> > >
> > > Duncan
> > >
> > > > When I reboot and run "cat /dev/video0 > /opt/media/tv/test.mpg" the
> > > > resulting file looks fine but if I record from Freevo, it comes out
> > > > shaky. If I then exit Freevo and try the same command from above then
> > > > the resulting file comes out shaky. So, it looks like Freevo is
> > > setting
> > > > some option for ivtv that makes the recording shaky.
> > > >
> > > > I've run "v4l2-ctl --all" both before and after Freevo recording and
> > > the
> > > > output is the same. So I really don't know what the next step should
> > > be.
> > > >
> > > > On 4/22/07, *Justin Wetherell* <[EMAIL PROTECTED]
> > > > <mailto:[EMAIL PROTECTED]>> wrote:
> > > >
> > > > I solved the shaky issues by going back to the old firmware
> > > located:
> > > > http://dl.ivtvdriver.org/ivtv/firmware/HcwMakoB.ROM
> > > > < http://dl.ivtvdriver.org/ivtv/firmware/HcwMakoB.ROM>
> > > >
> > > > HcwMakoB.ROM
> > > >
> > > > You will have to rename it to v4l-cx25840.fw if you want to
> > > use
> > > > this firmware instead.
> > > >
> > > >
> > > > You'll have to rename it, see above.
> > > >
> > > > On 4/22/07, *Justin Wetherell* < [EMAIL PROTECTED]
> > > > <mailto:[EMAIL PROTECTED]>> wrote:
> > > >
> > > > Hello Hans/All,
> > > >
> > > > I've just upgraded to Slackware 11 with a 2.6.18.8
> > > > <http://2.6.18.8> kernel and the new ivtv-0.10.1 driver. I am
> > > > having the same issues with shaky video and fine audio. Did
> > > you
> > > > ever get this figured out?
> > > >
> > > > Thanks,
> > > > Justin
> > > >
> > > >
> > > > On 3/27/07, *Hans Meine* < [EMAIL PROTECTED]
> > > > <mailto:[EMAIL PROTECTED]>> wrote:
> > > >
> > > > 4.) In parallel, I tried Linux-2.6.20.1 (I have the same
> > > > kernel running
> > > > successfully on several other computers) with
> > > > ivtv-0.10.1. Here, the
> > > > recordings are not fluent, but every half a second to
> > > > second, the video stops
> > > > which makes all movements appear jerky. The audio is
fine
> > > > though. I planned
> > > > to post more information by analyzing the stream, but my
> > > > wife deleted all
> > > > recordings and the system is currently booted into the
> > > older
> > > > kernel.
> > >
> > >
> > >
> > >
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> >
> >
>
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