[mythtvnz] Video Motion Blur

[Steven Ellis]

Wade Maxfield wrote:
>>Anyone notice that compared with LiveTV, VCR or DVD there always appears
>>to be a hint of motion blur with computer playback on TVs or monitors.
>>I've tried all kinds of things to minimise this but its still present. I
>>was beginning to wonder if perhaps i'm a bit too sensitive to it.
>>
>>In fact this isn't specific to MythTV. I watched the Microsoft Windows
>>MCE demo at the home show last week and they had the same video issues
>>both with a HP PC and an XBox 360.
>>
>>So
>>
>>1. Anyone notice it with their setup.
>>
>>2. Any work arounds/fixes?
>
> If your recording with a PVR-xxx card, try setting the dnr_temporal
> to 0.  My PVR-150 had it set to 8 by default.
>
> /usr/bin/ivtvctl -c dnr_temporal=0

Already set to 0

ivtvctl -C
ioctl IVTV_IOC_G_CODEC ok
Codec parameters
aspect      : 2
audio       : 0x00e9
bframes     : 3
bitrate_mode: 0
bitrate     : 8000000
bitrate_peak: 9600000
dnr_mode    : 0
dnr_spatial : 0
dnr_temporal: 0
dnr_type    : 0
framerate   : 0
framespergop: 12
gop_closure : 1
pulldown    : 0
stream_type : 14

>
> Also I noticed that turning on Bob deinterlacing seemed to make
> things look a little crisper on the telly downstairs (26" CRT by
> composite video), and less motion blurry.

Now for a normal CRT you shouldn't need deinterlacing.

Also i've tried all de-interlace formats on both interlaced and
progressive displays with little improvement.

If I take the capture of a PVR150/500 card and burn it to DVD it plays
perfectly on a normal DVD with no blur, playing with mplayer/xine/internal
on mplayer still produces the motion blur.

Steve


--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited
email   - steven@openmedia.co.nz
sales   - sales@openmedia.co.nz
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website - http://www.openmedia.co.nz
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