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Audio sync when ripping DVDs
ahofle:
What software are you using? Have you tried using a different codec like Xvid? I'm not sure the problems you are describing are due to CPU limitations. I have a P4 3.0 Ghz and haven't had those problems.
Also, in case you didn't already know about this, http://www.videohelp.com is a great resource for tutorials on encoding, converting, etc.
SavannahLion:
Is the sync immediately noticeable or does it "drift" as the movie play?
For the first, I don't have an answer. I haven't encountered the problem... yet.
For the second, I did encounter. There's an obscure problem relating to the quality of the crystal(?) in your audio card clock. During play back, I understand that the software uses timing "blips" or markers within the file to resync the audio to the video. Other tricks are employed such as frame doubling or skipping as well. However, encoding the audio uses the audio card clock (that's the theory anyways). If you specify the audio to be encoded at a specific rate, but the hardware audio clock is off by 0.001Hz, the markers are set for the incorrect rate and drift occurs. Some software spot the drift and modify the markers or the video accordingly, others well.... don't do so well.
This problem was annoying and obscure enough that I seriously considered finding out how just how far my $3,000 laptop could fly.
shmokes:
Interesting. It definitely drifts, though it's noticeable enough right off the bat. But sometimes it's perfectly fine too. It's weird. I used to encode with No. 1 DVD Ripper and had the problem pretty frequently. Sometimes I'd have to rip a disc three or four times before it came out right, but usually it worked well. Then I switched to Intervideo DVDCopy, and that just worked and worked. I must have ripped a couple dozen discs and now, suddenly, the problem is back, and not just on a single disc. It's messing up all of the -- to the point that I'm back on No. 1 DVD Ripper. Grrr.
boykster:
With storage space so cheap there's no reason to encode anymore IMHO....just rip to ifo/vobs and playback with a program that supports them (zoomplayer / windvd / etc)
:dunno
jbox:
That's not overly practical yet for your average home network. Streaming a DivX file involves sending less then a quarter of the traffic for around 90% of the quality (for normal don't-see-every----smurfing----pore TVs). So no-one else can do pretty much anything else while you're watching the movie. :dunno
As for the speed issue, there is no way a 3.6 Ghz P4 is not enough for video encoding. If it's taking (say) two or more hours I would take a good hard look at tweaking the drive channels (both DVD and HDD) before I'd blame the CPU for the bottleneck. Are either of them slaves, does windows have DMA switched on for both, are you imaging the disk first before burning, etc... ???
And having sub-titles out of synch is even more annoying, because you have to watch it for a bit first to make sure (since the point is you don't know who is saying what to start with). :banghead:
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