XVCD converting help

[PHOJ69]

I tried converting an avi file to xvcd and when I watch it on my dvd player it comes out all pixelated. I converted to 720 by 480 and a 2100 bitrate. Just wondering if there is something I did wrong. I used tmpge and then burned it with nero. Any help on this would be appreciated.

[DjPj]

What's your source?

[JHebert]

The 2100 bitrate is too low for 720x480 frame size. You would need at least 3500-4000Kbs to get good image quality and smooth motion at this high resolution. You should get better results at 2100Kbs if you drop the resolution to 480x480 or 352x480 if your player supports it.

[PHOJ69]

hey guys thanks for the help I am going to try those things that you suggested. One other question I am kind of new at this so this may sound stupid but does the resolution on the avi file matter when converting to mpeg. meaning if the avi resolution is higher will the mpeg be better quality.

[mpack]

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On 2001-12-19 07:28:39, JHebert wrote:
The 2100 bitrate is too low for 720x480 frame size.
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I disagree. My best ever result (having tried all kinds of variations on standard VCD and SVCD) was from a PAL xVCD using a 704x576 (ie. PAL) with 2718kbps CBR for the video and 192kbps CBR for the audio (forced on me because my DVD player only accepts max x2 reads from an xVCD, *and* I wanted to fit 45mins on a single disk).

My source was a rather old VHS tape - we are not talking perfect source here! I denoised the video with VDub and frameserved into TMPGEnc. Denoising of course meant that my bitrate went further and wasn't being wasted on encoding the noise.

The higher resolution displayed in the same TV screen space means that MPEG macroblocks are physically smaller and less obvious, which means two things: fewer bits can be dedicated to coding each macroblock without losing visible high frequency edges, also the smaller macroblocks makes any blockiness less evident.