Doom9's Forum - View Single Post - minimum vertical crop for intelaced in xvid?

george_zhu · 17th February 2004, 15:33

Well. 480x480 is the SVCD res. I capture the footage from camcorder and basically make two copies, one SVCD for TV and the other with xvid for archive(same size 40min/CD but more detail).

I think resize will hurt the quality more than just put the letterbox cover the garbage line, isn't it? Then next qustion is how to make the xvid as efficient as possible. If I crop 32x32, xvid will definitely gives higher quality because it works with less macroblocks. However, it seems no gain in quality for 8-line crop because it is smaller than a macroblock. How about 16 lines? Will that be one less macroblock in interlaced video?

BTW:I do not care AR in it since WMP Classic can change it in any way.

17th February 2004, 15:33	#5 \| Link
george_zhu Registered User Join Date: Feb 2003 Posts: 72	Well. 480x480 is the SVCD res. I capture the footage from camcorder and basically make two copies, one SVCD for TV and the other with xvid for archive(same size 40min/CD but more detail). I think resize will hurt the quality more than just put the letterbox cover the garbage line, isn't it? Then next qustion is how to make the xvid as efficient as possible. If I crop 32x32, xvid will definitely gives higher quality because it works with less macroblocks. However, it seems no gain in quality for 8-line crop because it is smaller than a macroblock. How about 16 lines? Will that be one less macroblock in interlaced video? BTW:I do not care AR in it since WMP Classic can change it in any way. __________________ PC: Athlon XP 2000+, 512 DDR266, 120G+80G 7200 ATA100, Nforce2, Avermedia DVD EZMaker PCI (878), winXP pro (sp1), onboard video card video program: xvid 1.0RC2 (koepi)07022004, DivX 5.1.1 pro(adware), virtual-dub1.5.10(build 18160), avisynth 2.5.3, adobe premiere 6.02, cce 2.50.01.00, tmpgenc 2.520.54.163 media player classic 6.4.7.7, filter: Xvid filter for all mpeg4. deblock-Y, de-block-UV