Thread View: comp.multimedia
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Started by Stefan Hartmann
Sat, 31 Oct 1992 19:39
AVI versus MPEG 2.0 for win3.x !!!
Author: Stefan Hartmann
Date: Sat, 31 Oct 1992 19:39
Date: Sat, 31 Oct 1992 19:39
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Hi, I just have the tested the performance of the new AVI (audio Video Interleaved) from Microsoft versus the new Xing Technology MPEG for Windows 2.0 version with sound-WAV-support ! AVI is too slow and the file size is too huge.... This is my first impression ! I just compressed a 10 frame sequence with the various compression protocols delivered with the final Beta-Version but at screen size of 320x240 it seems still be too slow for a 486 PC with 33 Mhz... Also the picture gets very degraded, when you use higher compression rates ! Extremly good is the new MPEG for Windows Version 2.0 I just received The new MPEG encoder runs also under Windows and it can be adjusted, what kind of compression rate it should give. At ratio 4 it gives still very good pictures without many artifacts and the file size is still very small. About 7 KBytes/frame (at 320x240 screen size)... And it is still very fast. I just installed a Local Motherboard from Genoa, the Turbobahn motherboard and it really speeds things up.. Well, these are my first impressions of AVI versus MPEG 2.0 for Windows... Best regards, Stefan Hartmann, c/o Ingenierbuero Gatz & Hartmann. email to: leo@zelator.in-berlin.de -- ************************************************************* * Stefan Hartmann This is how to contact me: * * EMAIL: leo@zelator.in-berlin.de * * Phone : ++ 49 30 344 23 66 FAX : ++ 49 30 344 92 79 * *************************************************************
Re: AVI versus MPEG 2.0 for win3.x
Author: Lawrence D'Oliveiro, Waikato Uni...
Date: Mon, 02 Nov 1992 01:12
Date: Mon, 02 Nov 1992 01:12
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In article <TTG8KOQ@zelator.in-berlin.de>, leo@zelator.in-berlin.de (Stefan Hartmann) writes: > > Hi, > > I just have the tested the performance of the new AVI (audio Video > Interleaved) from Microsoft versus the new Xing Technology MPEG for > Windows 2.0 version with sound-WAV-support ! > > I just compressed a 10 frame sequence with the various compression > protocols delivered with the final Beta-Version but at screen size of > 320x240 it seems still be too slow for a 486 PC with 33 Mhz... Interesting. What sort of frame rates can you get? > Also the picture gets very degraded, when you use higher compression > rates ! What sort of compression factors do you think are achievable in practice? > Extremly good is the new MPEG for Windows Version 2.0 I just received > > The new MPEG encoder runs also under Windows and it can be adjusted, > what kind of compression rate it should give. > > At ratio 4 it gives still very good pictures without many artifacts > and the file size is still very small. About 7 KBytes/frame (at > 320x240 screen size)... I assume that's 24 bits per pixel, so you're getting over 30:1 compression. Not bad. > > And it is still very fast. I just installed a Local Motherboard from > Genoa, the Turbobahn motherboard and it really speeds things up.. What sort of frame rates can you get? Is this a 24-bit display? Lawrence D'Oliveiro fone: +64-7-856-2889 Computer Services Dept fax: +64-7-838-4066 University of Waikato electric mail: ldo@waikato.ac.nz Hamilton, New Zealand 37^ 47' 26" S, 175^ 19' 7" E, GMT+13:00
Re: AVI versus MPEG 2.0 for win3.x !!!
Author: Alasdair Grant
Date: Mon, 02 Nov 1992 12:48
Date: Mon, 02 Nov 1992 12:48
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In article <TTG8KOQ@zelator.in-berlin.de> leo@zelator.in-berlin.de (Stefan Hartmann) writes: >I just have the tested the performance of the new AVI >(audio Video Interleaved) from Microsoft >versus the new Xing Technology MPEG for Windows 2.0 version >with sound-WAV-support ! > >AVI is too slow and the file size is too huge.... ... but isn't the speed difference because MPEGXING pokes around in the video card? It still doesn't work with a Paradise card at 1024x768, which is what I use for Windows. Better something that works slowly than something that doesn't work at all... (not that I've tried AVI yet)
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