[mythtv] [patch] WS stretch mode

[Jarod C. Wilson]

On Feb 22, 2004, at 14:52, Christian Hack wrote:

>> On Feb 22, 2004, at 12:09, Ed Wildgoose wrote:
>>
>>>>>> Here's a patch that adds one more zoom mode. This is for when
>>>>>> stations add
>>>>>> black bars to the sides of a 4:3 show to make it a 16:9
>> format. The
>>>>>> new 16:9
>>>>>> stretch mode just cuts off those bars.
>>>>>
>>>>> Does the 16:9 zoom not do the same thing for you?  That's what I
>>>>> have been using to zoom into shows with black borders on every
>>>>> side...?
>>>>
>>>> I believe he's referring to shows that are broadcast in HD 16:9
>>>> signals, but are actually 4:3 images, so there are black
>> bars on the
>>>> sides, but not the bottom. Using the current 16:9 zoom
>> would cut out
>>>> a good portion of the top and bottom of the picture. (The current
>>>> 16:9 zoom does kicks ass for the stuff broadcast letter-boxed in a
>>>> 4:3 signal though ;-).
>>>
>>> I thought *THAT* was the 4:3 zoom mode though?
>>
>> Nope, that'll only work on an actual 4:3 signal. This is a
>> 16:9 signal,
>> but with only 4:3's worth of actual picture. The black bars on the
>> sides are part of the video stream. Since it is a 16:9 signal, not a
>> 4:3, the 4:3 zoom mode can't zoom it. Or at least, I think that's the
>> case (now I'm not sure)...
>>
>
> Admittedly I only have a 4:3 TV, but I'm pretty sure that the current
> zoom modes provide for every situation. It took me a while to get my
> head around the Zoom modes that I don't currently use but are there for
> 16:9 pictures.
>
> However, the patch wouldn't have been submitted if that was the case.
> The way I understand it though, this patch stretches in X axis only.
> Without my box in front of me I can't say but I though that was already
> there.

The existing zoom mode stretches a 4:3 picture out to fill a 16:9 
viewing area, but a picture that is already 16:9 won't get stretched 
any further, at least not on the X axis. For a picture that is already 
16:9, switching to 16:9 zoom only stretches the Y axis.

I believe you're correct, the patch only stretches the X axis, but 
unlike the existing zoom modes, it takes a 16:9 picture, and stretches 
it out beyond the edges of the 16:9 screen on the X axis. Messy...

-- 
Jarod C. Wilson, RHCE

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