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problem with burnt dvdr
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kakutogi
Newbie
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24. May 2006 @ 13:22 |
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Hi
I just started converting avi to dvds and I'm having a problem. I'm encoding to mpeg-2 with tmpgenc Plus 2.5, and compiling the dvd with dvdlab. The dvd looks fine when there isn't much action, but whenever there's fast motion, it gets pixelated pretty badly. I'm already encoding at the highest possible quality, so I'm not sure what the problem could be. Would burning at a lower speed help? Any help would be much appreciated.
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Senior Member
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24. May 2006 @ 13:35 |
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From one of the afterdawn guides...
Quote:
You should understand that all of the most common video formats, including MPEG-2 (used with DVD-Video discs, digital TV and SVCDs) and MPEG-4 (used by DivX and XviD) are so-called lossy formats.
What does this mean then? It means that once you convert your original video to any lossy format, the resulting video file has lost some amount of data/details compared to the original video and that data can't be reversed by decoding it. Ever. So, think it like a compression program that takes a full book and compresses it down to a 4-page abbreviation -- the main data is still there, but using only the 4-page abbreviation, it is impossible to end up with the original book.
So, in this case it means that even when your DivX/XviD movie has been originally taken from the DVD-Video source, it wont be the same quality when converted again to a DVD-Video source. Actually, the resulting DVD-Video made from the DivX/XviD will have slightly worse picture quality than the DivX/XviD itself.
Now, once you understand this, your expectations should be on correct level.....
If you are still hell bent on converting back to DVD format, I would suggest using VSO's ConvertXtoDVD. It looks better than most after the conversion. Keep in mind that it still won't be as good as a DVD rip, but it will be close.
Also, if the .AVI file was heavily compressed when originally ripped, the resulting conversion back to MPEG-2 will look like crap... no matter what encoding engine you are using...
If file was not heavily compressed, the resulting conversion will look decent.
My gut is telling me that your original file is heavily compressed. TMPGEnc is a good encoder. If it doesn't look good after you used the highest possible quality.... well, lets just say that it might be as good as it gets.
All men profess honesty as long as they can. To believe all men honest would be folly. To believe none so is something worse. -John Quincy Adams
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laddyboy
AfterDawn Addict
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24. May 2006 @ 13:37 |
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AfterDawn Addict
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24. May 2006 @ 13:38 |
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the most common reason for pixelations is bad media. Made-In-Japan are the best disks you can get. Verbatim is the expemtion to that rule where their made in Taiwan disk are top notch! Taiyo Yuden, Verbatim, Sony, Maxell are the best! start with quality media then you can eleminate that from the list of what's wrong! then you can go with what you did. Conversion from AVI to DVD format can do this, too. and also the source material may be corrupt, which is another cause that has to be looked into. I use ConvertXToDVD for my conversions! Great program gives great results. good luck.....
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kakutogi
Newbie
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25. May 2006 @ 05:05 |
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Thanks for the answers guys.
I use maxell disks, so that can't be the problem. Anyway, I tried burning at 2,4x, and the dvd looks fine when I watch it on my computer, but when I watch it on my standalone dvd player, it still gets very pixelated. I'll give convertxtodvd a try, see if that helps.
This message has been edited since posting. Last time this message was edited on 25. May 2006 @ 05:06
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Senior Member
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30. May 2006 @ 13:23 |
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Have you tried ConvertXtoDVD?
Just curious if it helped or not...
All men profess honesty as long as they can. To believe all men honest would be folly. To believe none so is something worse. -John Quincy Adams
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kakutogi
Newbie
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30. May 2006 @ 13:47 |
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I did try ConvertXtoDVD, but unfortunately the results were the same. I'm actually thinking it may be due to bad media after all, as the maxell disks I was using have not been as good as I thought they would be. Of the 12 pack I bought, I ended up with like 4 or 5 coasters. I ordered some Sony disks, and am going to give it another go when they arrive.
Also, I've been meaning to ask, do you know why a dvd can look good when played on a computer and bad on a standalone player? Could this also be attributed to bad media?
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laddyboy
AfterDawn Addict
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30. May 2006 @ 15:00 |
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The media can play a role and Maxell media can be OK or really bad depending on who the manufacturer actually is.
You didn't say whether the DVD player was hooked up to SD TV or not. Your computer monitor is an HDTV in terms of resolution so video will look better there if the resolution of the video is high enough to support it.
If this was a lower resolution AVI, chances are your TV screen is quite a bit larger than your monitor screen, so the pixels are farther apart on the TV and the video won't appear as sharp.
This message has been edited since posting. Last time this message was edited on 30. May 2006 @ 15:01
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AfterDawn Addict
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30. May 2006 @ 19:36 |
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Laddyboy explained it so that even I understood that! Thank you!
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kakutogi
Newbie
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5. June 2006 @ 12:45 |
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Okay, so I tried the Sony disks and with MUCH better results. No more pixelation! I guess it just goes to show what a difference media quality can make. Thanks for the help everyone!
BTW, if anyone is interested, I tried both ConvertXtoDVD and TMPGEnc again and there wasn't much difference between the two. Encoding with TMPGEnc on highest quality seems to give slightly better picture, but it also took a lot longer. They both seem like good encoders.
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Senior Member
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5. June 2006 @ 14:19 |
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Glad you were able to pinpoint the problem. Most of the time bad media is to blame for bad burns/pixelation.
Anyway, good luck to you, and I'll see you around.
All men profess honesty as long as they can. To believe all men honest would be folly. To believe none so is something worse. -John Quincy Adams
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