Black Bars at top and bottom of image

[Browndog]

I'm encoding a PAL dvd in TMPG using DVD2AVI as the frameserver, everything works fine the video is great quality, except TMPG puts 2 black lines accross the top and bottom of the movie. The movie is the correct size on the screen and nothing is cut off, but there is 2 black bar accross the top and bottom of the movie, they are about 2cm wide on my 17inch screen, when viewing the mpeg in full screen from power dvd. The are also there in the preview while TMPG is encoding.

How do I get rid of them?

[Boulder]

I suppose TMPGEnc puts them there to maintain a correct aspect ratio. If the borders weren't there, the picture would be too tall.

Like SansGrip said in the Avisynth forum recently, the black borders are your friends. They compress extremely well and therefore you'll get more bitrate on the video itself.

[Browndog]

ok thanks, I thought they may have been cause by me doing sothing wrong. I wont worry about them now.

[bb]

Originally posted by Boulder
Like SansGrip said in the Avisynth forum recently, the black borders are your friends. They compress extremely well and therefore you'll get more bitrate on the video itself.
That's true because with the black bars your video resolution is actually lower. The black bars themselves compress very well; there's almost no difference if they are smaller or larger. But the edges between the black bars and the actual video are hard to compress, so it would be best if you'd encode just the video without any black bars. Unfortunately for DVD, SVCD, and VCD you are forced to use fixed resolutions, and not many standalone players allow to play non-standard resolutions while adding the black bars themselves.

bb

[Browndog]

No matter how hard I try I cannot encode without, either having the black bars or streching the video to fill the space where the black bars are.

When I set TMPG's "aspect ratio" to 16:9 and "scorce aspect ratio" to 16:9 625 line (PAL) The resulting m2v is in 4:3(the video is 16:9) if I leave the "aspect ratio" at 4:3 the video fill's the 16:9 and the balck bars make it up to 4:3.

[Boulder]

Originally posted by bb
That's true because with the black bars your video resolution is actually lower. The black bars themselves compress very well; there's almost no difference if they are smaller or larger. But the edges between the black bars and the actual video are hard to compress, so it would be best if you'd encode just the video without any black bars. Unfortunately for DVD, SVCD, and VCD you are forced to use fixed resolutions, and not many standalone players allow to play non-standard resolutions while adding the black bars themselves.

bb

But what about 16-pixel borders on each side of the video so that they would fill complete macroblocks?

[Boulder]

Originally posted by Browndog
No matter how hard I try I cannot encode without, either having the black bars or streching the video to fill the space where the black bars are.

When I set TMPG's "aspect ratio" to 16:9 and "scorce aspect ratio" to 16:9 625 line (PAL) The resulting m2v is in 4:3(the video is 16:9) if I leave the "aspect ratio" at 4:3 the video fill's the 16:9 and the balck bars make it up to 4:3.

Did you try to change the video arrange method settings?

[Browndog]

Did you try to change the video arrange method settings?

Yeah I did I tryed a few of those setting and they did not change a thing, somone said to me I should use "Full screen(keep aspect ratio 2)" but this did not fix the problem.

[bb]

Originally posted by Boulder
But what about 16-pixel borders on each side of the video so that they would fill complete macroblocks?
Yes, that can be encoded efficiently. See
http://forum.doom9.org/showthread.php?s=&threadid=34954

bb