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longdongsilver · 04-16-2007, 04:59 AM

Hi,

After testing wm9, xvid and mpeg1 on low bitrate (500kb/sec) small res movies (320x240) there did not seem to be a huge difference in quality.

On the larger res movies with higher bit rates the wmv9 were clearly better quality.

I was using tmpeg express 4.

I also ran another test using virtual dub to encode with wm9 but output in an avi format. With similar results.

Is Mpeg1 vbr actually not too bad at these low bitrate small res movies, or do i need to try another encoder, or in some way optimise the encoding settings i'm using to see a very large difference between mpeg1 and wm9?

When i tried using Mpeg2 the results were good on the large bitrate higher res videos, but seemed to be a little worse than mpeg1 on the low res low bitrate videos. However there was not vbr option for mpeg2 on the encoding software i was using.

The surfers love mpeg1 it streams well,even broken downloads can still play and nearly all machines can play this format. So if the difference in quality is minimal i will go with mpeg1....just wanted to hear back from other people who encode small res low bitrate video and see if i need to rethink before going mpeg1.

04-16-2007, 04:59 AM
longdongsilver Confirmed User Join Date: Aug 2003 Posts: 378	Movie Encoding question about mpeg1 Hi, After testing wm9, xvid and mpeg1 on low bitrate (500kb/sec) small res movies (320x240) there did not seem to be a huge difference in quality. On the larger res movies with higher bit rates the wmv9 were clearly better quality. I was using tmpeg express 4. I also ran another test using virtual dub to encode with wm9 but output in an avi format. With similar results. Is Mpeg1 vbr actually not too bad at these low bitrate small res movies, or do i need to try another encoder, or in some way optimise the encoding settings i'm using to see a very large difference between mpeg1 and wm9? When i tried using Mpeg2 the results were good on the large bitrate higher res videos, but seemed to be a little worse than mpeg1 on the low res low bitrate videos. However there was not vbr option for mpeg2 on the encoding software i was using. The surfers love mpeg1 it streams well,even broken downloads can still play and nearly all machines can play this format. So if the difference in quality is minimal i will go with mpeg1....just wanted to hear back from other people who encode small res low bitrate video and see if i need to rethink before going mpeg1.