[mythtv] Patch to autodetect 4:3 Zoom aspect ratio

aaron memoryguy at gmail.com
Tue Feb 26 15:54:24 UTC 2008

On 2/26/08, Mårten Bohlin <mabo at mochc.net> wrote:
> Yes it should be enabled by default and the logos should in most cases
> be outside of the detection area. But I had to adjust the detection
> limits a couple of times to get it to work with all of my channels. So
> my guess that it is some more adjustments to e done. For instance your
> black bars might not be black enough.

Okay, if other stuff doesn't work, I'll try taking a closer look at
the code and see if I can figure out how to tweak stuff. I can code,
for sure, but video/image processing algorithms often goes over my
head.... :)

Hm, just had a thought... I'm in NTSC-land (Canada). Could the
difference in resolution from PAL be a factor here?

> If you could make a sort recording that I could download, I could have
> a look at it. (If you dont make the adjustments yourself).

I'll look into doing this if I can't make progress on my own.

> If you do not get any output with the verboseflag you could try to
> switch to half zoom and then activate the autodetection again from the
> menu. That should make it to switch to either Off or Full and then log
> why it did that.

Ah, excellent idea. I'll give that a try. I must have been tired last
night; it didn't occur to me to try that.


"Oh oh oh. I'm incoherent with excitement. Please tell me what fascinating
bit of badger-sputumly inconsequential trivia you will assail me with next."
        -- Arthur Dent

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