Crop lines during video capture process

[gmachado]

Hello there.

Do you have any plans to include a feature to crop lines during the video capture process? When I capture signals from a VCR, I usually get garbage on the bottom lines.
It would be nice if I could get rid of these lines without the need to reencode de entire file, I guess. Is it possible?

Thanks,

Gilson

[Narflex]

This isn't something that's supported by the manufacturers of the video capture hardware so there's no stable way to do this.

[gmachado]

Ok, Jeff. Thanks anyway.

Regards,

Gilson

[KevinKiller]

gmachado,

Technically this is somewhat possible ... you can trade extra space at the top of the screen for extra space at the bottom.

Why would you do that? At the top of the screen is Line 21 close caption information which shows up as white dots in your captures and causes SERIOUS mpeg compression artifacts for the entire top 16 lines (16 being the size of a mpeg macroblock).

How can you do this? By using the parEditor www.swan-stone.com/parEditor.zip

Select the recording profile you like into SageRecorder. Double click on the parEditor and set the 'VSync Offset 1' and 'VSync Offset 2' to 8 or so (you may need to experiment). Click the 'Save' toolbar button. Go to SageRecorder, click record, then click play/pause, click it again, and see if there is "junk" at the top of the screen. Repeat as necessary.

K.

[Narflex]

FYI - That's only for the Provideo series cards.

[SHS]

Jeff I think he know that after all he worte the application

[Narflex]

I know, but the person asking the question didn't.

[SHS]

I see

[gmachado]

Jeff, K. and SHS,

The error was mine... I forgot to mention that my capture card is the Hauppauge PVR-250. Then, the suggested option wouldn't work for me.
Thanks everyone for trying to help, anyway. :-)

[ ]'s
Gilson

[newtbert]

If you dont mind re-encoding to a non-mpeg2 format, VirtualDub does an excellent job of cropping. And its free!

TMPGEnc can crop mpeg2, but it doesent seem to like Hauppage's format.

[gmachado]

Newtbert,

I do that sometimes (re-encode the file using third party softwares) when there's no other way and I need to use special filters to reduce noise or so. But I guess the thing is to try to get it done without the need to re-encode the file... as the card I use already save it on the format I need (MPEG-1 or 2) using its hardware encoder.
Re-encode the file and use software filters usually takes too long (it uses a lot of processor power).
Thanks for your ideas and help anyway! :-)

Regards,

Gilson