no picture when changing 4:2:2 channel

[GoogleCodeExporter]

Describe the issue you're having:

I'm using DVB dream software for viewing DVB TV channels.
some channels have 4:2:2 Chroma subsampling format and LAV video is the best in 
Quality and Performance and De-interlacing. but one issue has exist:
When I switch between 2 or more 4:2:2 channels, the picture gone and I should 
restart player to view other channel.

How can the issue be reproduced? Sample File?

What version of the product are you using? In which Player?
LAV Filters 0.61.2 / DVB dream 2.5a

Please provide any additional information below.
This is happen when I switch between 4:2:2 channels and for other HD or SD 
channel I haven't problems such these.
Using other filters like Maincompect, FfdShadow and ... didn't provide a good 
De-interlacing; but this issue doesn't exist.

Original issue reported on code.google.com by kral2008...@gmail.com on 9 Apr 2014 at 8:25

[GoogleCodeExporter]

If you use DXVA2 Native decoding mode, thats to be expected, because DXVA2 
decoding does not support 4:2:2. You can use any of the other decoding modes, 
which should be able to switch between 4:2:0 and 4:2:2

Original comment by h.lepp...@gmail.com on 10 Apr 2014 at 7:32

[GoogleCodeExporter]

I use Nvidia CUVID with my GTX260 Video card. This happen when I
switch between 2 or more 4:2:2 channels. I didn't use DXVA2 decoding
mode.

Original comment by kral2008...@gmail.com on 10 Apr 2014 at 9:49

[GoogleCodeExporter]

Try software decoding then (ie. "None" in the hardware decoder selection). 
Hardware decoding is simply not compatible with 4:2:2

I do however not have access to any 4:2:2 live tv, so I cannot help.

Original comment by h.lepp...@gmail.com on 11 Apr 2014 at 8:13

• Changed state: CannotReproduce

[GoogleCodeExporter]

Thanks for your help.
I'll try it; but I don't know whether this cause to poor quality and
de-interlacing or it is the same as Hardware mode?
and if it possible, please try to make Hardware decoding compatible with 4:2:2.
Thank you, and excuse me for bad English.

Original comment by kral2008...@gmail.com on 11 Apr 2014 at 9:42

[GoogleCodeExporter]

The hardware itself simply does not support 4:2:2, there is nothing I can do to 
change that, I don't build the hardware. :)

Original comment by h.lepp...@gmail.com on 11 Apr 2014 at 10:28

[GoogleCodeExporter]

Thank you for support.
:)

Original comment by kral2008...@gmail.com on 11 Apr 2014 at 3:47