More Lip-sync problem on (S)VCD...old disc ok..new ones not.

[jnms]

EDIT Please see my post below...

Just wondering if a lip-sync problem is related to using a too high bitrate? I know a high bitrate can cause choppy sound and video, but can it also cause lip-sync errors as well?

Cheers...

[Gazorgan]

What was the source? Most SVCD lipsync errors are from VBR Audio AVI sources. And is it a fixed or gradual error?

[jnms]

The source was an AVI file. I uncompressed the audio into PCM before encoding to MPEG2. However, I don’t think that is the problem. Under my old DVD Player…this particular SVCD palyed fine (as did all my other SVCD’s). However since I got the new player I get choppy sound on most of the SVCD’s, I have pretty much worked this out to be the bitrate…which I lowered and re-encoded. For the most part it is fine.

But before I encode yet another batch of files (again)…I was wondering if this same issue could cause the lip-sync issue. It is just odd as the discs run perfectly on the old player…

[Gazorgan]

I had the same problem. I had a number of SVCD's that wouldn't play right (played on computer fine) Eventually I found out through testing that the (not so cheap) DVDPlayer didn't like bitrates over 2000, or 384 audio. Needless to say i returned it and got a $54 Apex 1201 and it takes anything up to and beyond 4000 bitrate on SVCD. As i recall, it did indeed seem to have sync problems. I know I re-encoded a SVCD to a lower bitrate and it was fine( although it looked double encoded ). I encoded to CBR, and as I recall the original was VBR.

Perhaps the peaks were too high?

[jnms]

Thanks for the reply again.

Well, my previous player was a Cyberhome ADL528, and it played the SVCDs fine. The newer player is a Marantz 4100 OSE, which is suposedly a far superior player. (DVD's look great on it). But so far it seems that the max bitrate I can encode to for it is somewhere between 2200 - 2350, which really isn't too good.

At the moment I am in two minds as to whether to return it and get something else. (I got it this weekend). I guess I will have to wait and see what these SVCD's come out like with a 2300 bitrate VBR at 2 passes.

Just another question...generally at what is the approx. bitrate I can expect to see "break-up" / smearing in the picture in fast scenes? I know at 2500 this rarely happens, but what about lower?

Cheers...

[jnms]

Been having this problem with audio sync errors on my new DVD Player. Ting is all the VCDs and SVCDs play fine on my old DVD Player...

But on my new one...the VCDs I burnt some time ago are fine. But the most recent ones have sync problems.

It may well be due to the source material. I am using TMPGENC to encode the files which are DivX. I uncompress the audio to PCM in VirtualDub and then save as a new AVI file. Then load it into TMPGENC to encode.

Other files are MPEG files which I have downloaded…these I burn directly to VCD…and the latest ones are also having problems.

What I am thinking is that I should separate the audio from the video and then re-encode them from separate sources. This may work…but I am not sure…however, my question is, what would be the best way of doing this?

Cheers…