Chris Kennedy wrote:
I'm also wondering about an oddity I'm seeing where when using the
/dev/video48 device, video looks like we are missing frames, it's
jerky on playback.
Yup, i've noticed this too - about one in ~40 frames seems to be dropped on
average.
> Also the ghosting image over the
to
I'm also wondering about an oddity I'm seeing where when using the
/dev/video48 device, video looks like we are missing frames, it's
jerky on playback. It didn't do this originally when I first was
getting it to work, suspect we need to possibly really program all
the buffer registers to make it
So, I decided to give John Harvey's exciting YUV decoding patch a go on
0.3.4p - and so far it's all working fairly well :) I've had a few
problems, though, which I thought I'd share:
a) I'm feeding the decoder 25fps progressive PAL video to /dev/video48.
However, the YUV decoder renders both
ailto:ivtv-devel-
> [EMAIL PROTECTED] On Behalf Of Chris
Kennedy
> Sent: 08 May 2005 18:32
> To: ivtv-devel@lists.sourceforge.net
> Subject: Re: [ivtv-devel] YUV decoding & mplayer.
>
> This would be wonderful, really an mplayer output
for hm12 is all we need
> to
> get t
This would be wonderful, really an mplayer output for hm12 is all we need to
get this going, and if anything it could just initialize the decoder with
some fake mpeg2 if really needed, but that could be something later if really
needed. I'm not working on it, really bad at all this video format co
Heya,
Reading about the new YUV decoding advances, I'd figure to take the risk
and install a .3 version of ivtv to play around with the YUV stuff.
after running yuv_setup.sh, cat /dev/video32 > /dev/video48 seems to
work. it is very stuttery, but the images produces look fine, and I can
still s
;
> > -Original Message-
> > From: [EMAIL PROTECTED] [mailto:ivtv-devel-
> > [EMAIL PROTECTED] On Behalf Of Chris Kennedy
> > Sent: 26 April 2005 20:27
> > To: ivtv-devel@lists.sourceforge.net
> > Subject: Re: [ivtv-devel] YUV decoding works, some caveats
s Kennedy
> Sent: 26 April 2005 20:27
> To: ivtv-devel@lists.sourceforge.net
> Subject: Re: [ivtv-devel] YUV decoding works, some caveats still
>
> I'm wondering if we would want to mmap the buffer, possibly 2, out to
> userspace, and have an ioctl to switch which buffer we di
-Original Message-
> > From: [EMAIL PROTECTED] [mailto:ivtv-devel-
> > [EMAIL PROTECTED] On Behalf Of Chris Kennedy
> > Sent: 24 April 2005 00:40
> > To: ivtv-devel@lists.sourceforge.net
> > Subject: Re: [ivtv-devel] YUV decoding works, some caveats still
> >
> &g
---
> From: [EMAIL PROTECTED] [mailto:ivtv-devel-
> [EMAIL PROTECTED] On Behalf Of Chris Kennedy
> Sent: 24 April 2005 22:34
> To: ivtv-devel@lists.sourceforge.net
> Subject: Re: [ivtv-devel] YUV decoding works, some caveats still
>
> Actually I suspect for YUV input, we won&#
Chris Kennedy wrote:
Actually I suspect for YUV input, we won't be able to input fast enough
without buffering, I've actually tried an ioctl before with YUV frames,
and it would miss a frame once in awhile until I used buffering.
I have been playing with the YUV input, and here's my observations ..
and send
> a patch? I don't know how much time I'll have this week and you often end
> up getting things done just as I start to look at things.
>
> John
>
> > -Original Message-
> > From: [EMAIL PROTECTED] [mailto:ivtv-devel-
> > [EMAIL PROTECTED] On B
-Original Message-
> From: [EMAIL PROTECTED] [mailto:ivtv-devel-
> [EMAIL PROTECTED] On Behalf Of Chris Kennedy
> Sent: 24 April 2005 00:40
> To: ivtv-devel@lists.sourceforge.net
> Subject: Re: [ivtv-devel] YUV decoding works, some caveats still
>
> Yes, I've seen
Original Message-
> > From: [EMAIL PROTECTED] [mailto:ivtv-devel-
> > [EMAIL PROTECTED] On Behalf Of Chris Kennedy
> > Sent: 23 April 2005 21:08
> > To: ivtv-devel@lists.sourceforge.net
> > Subject: [ivtv-devel] YUV decoding works, some caveats still
> >
> >
On 24/04/2005, at 8:07 AM, Chris Kennedy wrote:
This allows YUV decoding to work, you can now do things like cat
/dev/video32 > /dev/video48 on your pvr350. It takes the odd format of
YUV of course, hm12 rawvideo in mplayer. There are still some
oddities,
you must decode mpeg at least once upon
---
> From: [EMAIL PROTECTED] [mailto:ivtv-devel-
> [EMAIL PROTECTED] On Behalf Of Chris Kennedy
> Sent: 23 April 2005 21:08
> To: ivtv-devel@lists.sourceforge.net
> Subject: [ivtv-devel] YUV decoding works, some caveats still
>
>
> This allows YUV decoding to work, you
This allows YUV decoding to work, you can now do things like cat
/dev/video32 > /dev/video48 on your pvr350. It takes the odd format of
YUV of course, hm12 rawvideo in mplayer. There are still some oddities,
you must decode mpeg at least once upon module load before it will decode
YUV. This se
it)
John
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:ivtv-devel-
> [EMAIL PROTECTED] On Behalf Of Sager, Jim
> Sent: 07 March 2005 20:13
> To: 'ivtv-devel@lists.sourceforge.net'
> Subject: RE: [ivtv-devel] YUV Decoding
>
> On March 7, 2005
On March 7, 2005 02:21 pm, Kohlsmith, Andrew wrote:
>> without any tearing. Of course the quality of playback will be dependent
>> upon the speed of the computer's processor since the computer will be
>> decoding the video to YUV before passing it along to the PVR-350.
>
>Well it's currently conver
A related question: is there any chance that at some point in the
future we'll be able to send arbitrary sound out through the PVR-350
TV-out (not just sound muxed with MPEG-2 video)? This would eliminate
the need to pass the TV-out sound through the audio card to get all
types of audio to the so
On March 7, 2005 02:14 pm, Sager, Jim wrote:
> without any tearing. Of course the quality of playback will be dependent
> upon the speed of the computer's processor since the computer will be
> decoding the video to YUV before passing it along to the PVR-350.
Well it's currently converting between
ers will free up the framebuffer for OSD stuff.
Jim
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Andrew
Kohlsmith
Sent: Monday, March 07, 2005 1:57 PM
To: ivtv-devel@lists.sourceforge.net
Subject: Re: [ivtv-devel] YUV Decoding
On March 7, 2005 01:50 pm, Sager,
On March 7, 2005 01:50 pm, Sager, Jim wrote:
> I don't mean to be pushy since my ability to help develop the driver is
> quite lacking. This, to me, is the one last area that would give MythTV
> a real boost with respect to playing virtually any type of video format
> thru the PVR-350 tv-out.
I th
thru
> the PVR-350 tv-out.
>
> Jim
>
>
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]
> Behalf Of John Harvey
> Sent: Monday, March 07, 2005 1:16 PM
> To: ivtv-devel@lists.sourceforge.net
> Subject: Re: [ivtv-devel] YUV Decodi
sourceforge.net
Subject: Re: [ivtv-devel] YUV Decoding
I'm still waiting for feedback from Hauppaugge.
John
--- "Sager, Jim" <[EMAIL PROTECTED]> wrote:
> I haven't seen any buzz as of late with respect to
> YUV decoding. I was just curious as to what state
>
I'm still waiting for feedback from Hauppaugge.
John
--- "Sager, Jim" <[EMAIL PROTECTED]> wrote:
> I haven't seen any buzz as of late with respect to
> YUV decoding. I was just curious as to what state
> this is in. Is anyone doing any developing on this?
>
> Thanks,
> Jim
>
--
Title: YUV Decoding
I haven't seen any buzz as of late with respect to YUV decoding. I was just curious as to what state
this is in. Is anyone doing any developing on this?
Thanks,
Jim
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