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Mpeg-2 Problem with DVDA
Hello,
I finished my video and i have rendered it in mpeg-2 codec. the sound seperately (dolby digital, ac3).
i have to say… the quality is a bit strange. i don’t know how to explain. if you watch the movie in PREVIEW mode – DVDA, all borders from persons are… like curves.
i could upload you a piece of the video if you want to see that. The Video has a length of 45min and is 2,2Gbits big.
sincerely
lukas r. -
9 Replies
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Don’t worry about how it looks in preview mode.
How does it look once it’s burned to a DVD and viewed on a TV? -
You say you rendered to the MPEG2 codec – but you don’t say what which preset you used or whether you changed any of the settings under “Custom”.
Edward Troxel
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to mike: on DVD it is the same… 🙂
to edward: i changed the custom settings – yes. but i used your newsletter #TTS01-07. -
sry, i used DVD Architect NTSC video Stream.
Custom: variable bit rate:max: 8.000.000
average: 6.000.000
min: 2.000.000 -
Now you have me curious. I’m having trouble imagining what “all borders from persons are… like curves” looks like. Can you post a few frames on a website somewhere from scenes where the problem is very evident?
Mike
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Hey,
i rendered a short szene of the video. i hope you can see the “curves”
you can download it @ https://www.lukas.fishhome.de/
I also added some pictures from my custom preferences of the mpeg-2 codec. i didnt include the audio for the short szene..
Also the video can bacome bigger. i can burn it to an 8GB DVD. Maybe i can set the quality higher? but i guess it’s almost the best…
well, download the video and watch it pls. Also see the pictures from my custom preferences.
Thanks
Lukas R. -
Likas, I think I see your problem.
When you said “watch the movie in PREVIEW mode”, I assumed you were referring to simply watching it.
From your screen shots, I now see that you were referring to the “PREVIEW mode” in the render quality setting. Set this to “Good” and, if I’m correct, this will solve your problems.
Incidentally, I have no idea how this setting got changed to “Preview” as “Good” is the default and, unless you have a specific reason for doing so, it should be left at that setting. The only exception for changing (to “Best” mode) is when your project is primarily stills as this helps to maintain quality. Otherwise leave it at “Good”.I looked at the clip you posted. I’m assuming you’re referring to the fringing/fuzziness that outlines most of the people.
This is due to a number of reasons,ost of which you have no control over.
1) technical limitations of the NTSC format for fast motion (it will blur);
2) technical limitations of the miniDV format (4:1:1 is less than full 4:4:4 resolution);
3) technical limitations of your camcorder;
4) final encoding to MPEG-2 (which is 4:2:0).
I tried rendering a short segment of a school play I shot last year (lots of fast action) with a JVC DV500U (3-1/2″ ccds) and it wasn’t until I selected “Best – 2 pass” that I saw a slight reduction in this fringing compared to the original footage (whish still had it due to #1 above).Mike
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hey mike,
thanks for your fast answer.
maybe it’s the preview mode.. i am at school right now and i will test it, if i am back at home today.
Maybe it is because of the NTSC format?! Because i leave in germany, and PAL is european standard. well, i rendered the whole video in with PAL. but there was no change. It looked same with the NTSC-Video. -
Lukas, when I said technical limitations of the NTSC format for fast motion (it will blur), I didn’t mean that PAL would be any better. It’s just that 30 (or 25) fps is too slow a frame rate to accurately capture fast motion without some blurring. The only workaround with a video camera is to use a higher shutter speed. There are trade offs doing that as well though (primarily in the amount of light needed as the shutter speed increases) so you’d have to do some experimenting to see what shutter speed works best for you.
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