pyTivo Discussion Forum

dlfl · Joined: 04 Jan 2008 Posts: 40 Location: Ohio

On my old 4:3 CRT TV transferred videos are clipped at the top and on both sides.

Attached is a patch that pads the top (16 pixels) and both sides (20 pixels). It affects only function select_aspect in transcode.py. The diff is a "unified context" diff relative to transcode.py in version ebc6b29e44be3... in wmcbrine's git. This was current 7 Feb and transcode.py has not changed in the two versions committed from then until now.

The changes are only a few lines in three places. You can make them by simple editing by inspection of the diff file. (A '-' means delete that line; a '+' means add that line). You see two variables WPAD and TPAD that you can change to adjust the padding -- but always make them even whole numbers.

The patch is intended to affect only 4:3 aspect configurations but hasn't been tested on 16:9 cases.

I'm not proposing any developer incorporate this in their code. I don't know how many other users would want this, and to do it properly would add yet another config item.

I had to change the attached file extension from .diff to .txt .

krkeegan · Posted: Sun Feb 10, 2008 4:27 pm Post subject:

You just raised an interesting point. There are certainly going to be, and probably already are, other modifications that provide unique solutions.

This calls for another forum.

wmcbrine · Joined: 04 Jan 2008 Posts: 514

krkeegan · Posted: Mon Feb 11, 2008 12:55 pm Post subject:

Hmm, interesting, I haven't seen any overscan on any HD sets, including plasma, lcd, and dlp. My impression was that overscan was limited to crt based on the technology.

wmcbrine · Joined: 04 Jan 2008 Posts: 514

Not only are there plasma sets with overscan (like mine), there are also CRTs without (those intended as computer monitors rather than TVs).

Some HD sets allow toggling it. Sometimes it depends on the input used. Mine has no way to turn it off, but then it's technically an EDTV.

krkeegan · Posted: Mon Feb 11, 2008 5:13 pm Post subject:

Interesting, I guess I assumed there was no reason to do this anymore.

Still, I am with dlfl on this one. I don't think this is a major problem for most people and I would rather not clutter up the list of settings or the program with settings that will only be used by a very very small subset of individuals.

wmcbrine · Joined: 04 Jan 2008 Posts: 514

ciper · Joined: 17 Feb 2008 Posts: 3

AFAIK all sets must have overscan. If there wasnt any you could see the close caption information at the top of the screen!

wmcbrine · Joined: 04 Jan 2008 Posts: 514

Changed the subject line to reflect that this is actually about padding (or avoiding cropping).

rgr · Joined: 02 Mar 2008 Posts: 2

If anybody could add this it'd much appreciated. I have a Toshiba DLP tv and an overscan problem that I corrected by kluging together some code that does what I want. Problem is it's hardcoded in an old (12/07) version of pyTivo, so if I want to go to one of the new builds I have to figure out what to adjust and where each time. This is the first time I've seen or modded python code so it takes me awhile to do so.

I appreciate that it'd be a hassle to add another variable into the config file, but if you could, that'd be fantastic!

Thanks for all you folks do to make using my tivo even more of a pleasure and convenience than it already is.