poor DVD quality

3 replies [Last post]
gstoll
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Joined: Mar 1 2002

I have finally got everything working and created a DVD. Unfortunately the quality of the video on the DVD is noticeably poorer than the quality of the same project copied back to DV tape.

My workflow was:
- record DV clips on my Canon Elura
- capture clips with Fast.forward
- trim many of the clips in FF (trimming the files as well
- export to Premiere 6.0
- create simple transitions and titles
- export the timeline in 4 segments as MPEG2 files using the LSX MPEG encoder using the profile "LSX MPEG2 DVD Assets (NTSC)"
- Import those MPEG2 files into Sonic MyDVD 4.0 (which came with my Sony DRU 500A)
- Create the image of the DVD in folders on my hard drive
- Then use RecordNow DX to copy the folders to a DVD+R on the Sony DRU-500A

When I play this DVD on my older Sony 5 Disc carosel DVD player and view it on my 52" Sony TV and compare it to the DV tape of the same project, (exported from Premiere project exported back to FF and copied back to Canon Elura) the quality is significantly degraded. There is noticeably more noise, and fast movement is much choppier.

Any ideas on what the problem is?
- does MyDVD recompress the MPEG2 files whacking quality?
- should I export from Premiere in some other format, like AVI?
- am I doing something wrong in my workflow?
- is there better software to create DVD's?
- is it possible that my DVD player is not handling it well (it plays Hollywood movies fine)?
- anybody else see this?

thanks,

Gary

rich951
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Joined: Nov 6 2002

I guess the obvious answer would be the MPEG encoding, assuming your source material is NTSC like the profile you've chosen of course! Might be worth trying a different encoder, many of them have trial periods like tmpgenc or the mainconcept encoder. You'll have to write out to an avi file first though.

A couple of other things to try, check the compiled output before burning to dvd (with a software player such as powerdvd), and do you have any control of things like bitrates and motion settings in your current encoder? Obviously set the bitrate as high as possible!

See http://www.mainconcept.com/mpeg_encoder.shtml and http://www.pegasys-inc.com/e_home.html for my two favourite encoders. Everyone else will probably proceed to name theirs!

gstoll
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Joined: Mar 1 2002

thanks for the reply. After a bunch more troubleshooting it appears that the culprit is my old Sony DVP C650D DVD player. I tried connecting a relatively new but very cheap ($60) KLH DVD player to my TV in the same way as the Sony and the quality was MUCH better. There was no choppiness on fast motion and the noise was lower. I didn' do a side by side comparison with the DV tape, but subjectively it seemed about the same.

Interestingly, with both DVD players it seems like the quality is a little LOWER using an S-video connection vs. std RCA jacks.

Gary

msmyrl
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Joined: Feb 15 2001

I am using a very similar process to capture and make DVD's of some of my favorite episodes from various TV shows. One suggestion is: under the settings when you go to export your captured video to mpeg-2 to go into the "Advanced Settings" for Ligos and under the "bitrate" tab change the average values at the bottom from 2000 and 4000 (I think that's what they default to in the DVD assets preset) to 4000 and 6000. Click 'OK' then click 'prev' on the settings window a couple of times until you find the "field precedence" setting and change it from 'none' to 'Lower field first.' Then save these settings with notes so that if you like them you can just reload them next time.

I've found that bumping up the bit rates and setting the field order made a substantial improvement in quality with only about a 20% increase in file size.

If anyone else has suggestions on Ligos presets please let me know, and let me know what type of video they were good for, i.e. home video, sports, tv action shows, etc.

quote:Originally posted by gstoll:
I have finally got everything working and created a DVD. Unfortunately the quality of the video on the DVD is noticeably poorer than the quality of the same project copied back to DV tape.

Gary