short audio gaps

[orbsplateau]

I've just been going over some of the DVD's I've backed up over the last few months... what I've noticed is that there are occasional audio gaps (each maybe less than half a second long). On average they occur only once or twice on a DVD.

They seem to be independant of the media and the player (i've tried ripping the contents back to my HD and playing them with PowerDVD and the gaps are still there).

I'm guessing that they either occured during the original ripping, encoding or burning phase.

Any ideas what may have caused these? Could pausing/resuming during the encoding phase create any problems?


Any help or suggestions would be appreciated.


--------------------------
System:
PIII 733Mhz, 512MB RAM running Windows 2000 SP4 + updates
2 x 7200RPM 80 GB harddrives (partitioned and defragmented to optimize performance)


These gaps occured while using various freeware versions of DVD ReBuilder

Using CCE SP 2.67 Retail - 4 pass encoding. De-interlace with DeComb - the rest are all default options.



Other tools used:
DVD Decryptor, DVD ReMakePro, Nero Burning Rom with data verification turned ON


Media:
Fuji DVD+R 8x, made in Japan. booktype set to DVD-ROM - burnt at 4x or 8x

[jdobbs]

I've never seen or heard of this before -- and it appears you are the only person experiencing it. You mention DVD ReMake... what actions do you perform with that tool?

Pausing and resuming should have no effect whatsoever.

[jptheripper]

did you try playing the files before burning? nero has a way of thinking it is smarter than it is

and try encoding without decomb

finally, to see if its a data error or a rb error, rerun the files off your dvdr that you reripped to hd through the latest and greatest dvdrb (v1 rc5.1) with no compression, see if the gaps are fixed

[orbsplateau]

I've never seen or heard of this before -- and it appears you are the only person experiencing it. You mention DVD ReMake... what actions do you perform with that tool?

Pausing and resuming should have no effect whatsoever.

I only use DVD Remake Pro to remove traillers or the FBI warning nag. I also modify the language menus in order to remove buttons that link to 2nd or 3rd languages (since I later strip the audio in Rebuilder). That's it.

I re-encoded one of the older DVDs (to test why things are running slower now... but that's for another thread). and this time the audio is fine.

I've noticed that it seems to occur more frequently on DVDs with episodes and animation (Futurama, Family Guy, etc.). The few movies that I've backed up seem ok (based on the 2 I've checked). Then again, most of the DVDs I've backed up have been animated shows... so it could just be a coincidence.

[jptheripper]

why am i getting the feeling this is related to decomb

[orbsplateau]

did you try playing the files before burning? nero has a way of thinking it is smarter than it is

no... but I will from now. It's a good idea. I didn't even notice this problem until I went back to watch my backed up DVDs from the past few months. I also won't be using decomb anymore.


finally, to see if its a data error or a rb error, rerun the files off your dvdr that you reripped to hd through the latest and greatest dvdrb (v1 rc5.1) with no compression, see if the gaps are fixed

I'm not sure I understand... are you suggesting that I try backing up the original DVD with no compression? I'm asking because I tried that and there was no problem this time, even with compression.

or backing up my copy and and re-eoncding it with ReBuilder to see if the audio problem "dissapears" somehow?

[orbsplateau]

why am i getting the feeling this is related to decomb

it could be, since I've alwayed used it to de-interlace the animated shows.

I won't use it for a while to see if things improve.

[jptheripper]

well if all is working now, all good

it is worth one try to see if nocompression will fix your older broken backups