[linux-dvb] Deinterlacing UK DVB-T

Mario Rossi mariofutire at googlemail.com
Mon Oct 22 23:52:48 CEST 2007


Måns Rullgård wrote:
> Mario Rossi <mariofutire at googlemail.com> writes:
> 
>> Hi,
>>
>> I receive DVB-T in the UK and I'd like to improve the image quality.
>> I think it is a deinterlacing issue.
>>
>> I'm currently using in mplayer
>>
>> vf=pp=lb
>>
>> And it improves the situation for the fine details.
>> But I still get some effects, on macro blocks.
>> There are like horizontal bands (maybe 0.5 cm thick on my 16 inches
>> screen) and if one looks closely enough, it is possible to see the
>> separation between those bands.
> 
> That sounds like quantisation artifacts rather than interlacing.  Some
> channels in particular are using rather low bitrates so this should
> come as no surprise.
> 

Is there a way to get rid of it?
If I watch my TV I can't find those lines.

It's like the TV is able to smooth edges, maybe with some averaging.
It happens with all applications (kaffeine, mplayer, xine) and it looks to be worse on BBC that 
Channel4 (& friends).





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