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View Full Version : Converting video capture avi to dvd-r


kempodragon
1st August 2003, 00:03
I'm posting here because I can't figure which area this topic belongs, so moderators please feel free to move this a more appropriate forum.

I've read the avi to dvd-r guide, but it's geared toward avi's that have already been encoded, not raw capture files. I'm using TMPG to encode the video, and I've read the TMPGdvd encoding guide also. What I need help with is proper cropping and resizing. Here is the capture file specs. The movie is "Akira" in the original 16:9 format.

720x480, 29.97 fps, Huffyuv in YUY2, with 48 Khz, 16 bit stereo PCM wav sound.

The video has a black bar on the right side, so I'm guessing my capturing 720x480 with the 9 pixel overscan mentioned in the capture guide. My capture card is an ATI AIW 3500DV if that helps.

I already used Decomb to get a 23.976 fps, which I plan use in Tmpg according to the guide.

Cropping the black spaces results in a 712x360 resolution. How do I resize in Avisynth while keeping the correct aspect ratio? I want all the resizing and filtering done in Avisynth and Tmpg to simply encode the final m2v.

killingspree
1st August 2003, 07:16
hi,
first of all i think this would best fit the capture forum, as you are dealing with a captured source (vs a DVD mpeg2 source)

to your problem:
honestly i would not resize... Stretching the video from 712 to 720 (the horizontal resolution you'll need for NTSC DVDs) is not really a smart thing to do. I would rather recommend you
a) just leave it as is
b) crop away 3 to 4 pixels on the right and add them on the left so that the video itself is 'centered'

for your vertical resolution, as you most likely know you will have to end up with 480 again. therefore i'd recommend that you just crop the existing black bars away and then readd them using the addborders() command in avisynth. This way you'll ensure that those are absolutely black and need the least bitrate possible.

when encoding make sure you set the AR flag to 16:9

hope this makes some sense,
steVe

kempodragon
1st August 2003, 20:27
Thanks. I knew I'd need the AddBorders command, but I didn't know what would be best for getting the horizontal resolution. The avi to dvd-r guide really should be updated to include captured video.