Audio desynced gradually

[omare]

hi
am tryng to encode a dvd which its about 2 hours ,everything come out ok ,but when tryng to playback the dvd i notice the audio desynced nearly the end but the start is fine ,
am using big 3 method and enable add silence to pgc and vobi in scenaid aswell,
so i went back to the encode folder and try to read the log and notice some error :
====== PROCESSING LOG ======================
Time 01:38:53.376; Frame#= 185419. Unsynchronized frame...SKIPPED 99 bytes. Found new synch word
Time 01:38:53.408; Frame#= 185420. Crc2 error FIXED: read = 3E7C; calculated=3FF3
Time 01:38:53.440; Frame#= 185421. Unsynchronized frame...SKIPPED 669 bytes. Found new synch word
Time 01:38:53.504; Frame#= 185423. Unsynchronized frame...SKIPPED 387 bytes. Found new synch word
Time 01:38:53.536; Frame#= 185424. Crc1 error FIXED: read = 7FFD; calculated=B587
Time 01:38:53.536; Frame#= 185424. Crc2 error FIXED: read = D6B5; calculated=581E
Time 01:38:53.568; Frame#= 185425. Unsynchronized frame...SKIPPED 381 bytes. Found new synch word
Time 01:38:53.696; Frame#= 185429. Unsynchronized frame...SKIPPED 195 bytes. Found new synch word
Time 01:38:53.728; Frame#= 185430. Crc2 error FIXED: read = B6DB; calculated=4E27
Time 01:38:53.760; Frame#= 185431. Unsynchronized frame...SKIPPED 573 bytes. Found new synch word
Time 01:38:53.888; Frame#= 185435. Unsynchronized frame...SKIPPED 3 bytes. Found new synch word
Time 01:38:53.920; Frame#= 185436. Crc2 error FIXED: read = 777F; calculated=F67D
Time 01:38:53.952; Frame#= 185437. Unsynchronized frame...SKIPPED 765 bytes. Found new synch word
Time 01:38:54.016; Frame#= 185439. Unsynchronized frame...SKIPPED 291 bytes. Found new synch word
Time 01:38:54.048; Frame#= 185440. Crc1 error FIXED: read = 7FFD; calculated=71ED
Time 01:38:54.048; Frame#= 185440. Crc2 error FIXED: read = B5AD; calculated=DCDF
Time 01:38:54.080; Frame#= 185441. Unsynchronized frame...SKIPPED 477 bytes. Found new synch word
Time 01:38:54.208; Frame#= 185445. Unsynchronized frame...SKIPPED 99 bytes. Found new synch word
Time 01:38:54.240; Frame#= 185446. Crc2 error FIXED: read = 3E7C; calculated=3FF3
Time 01:38:54.272; Frame#= 185447. Unsynchronized frame...SKIPPED 669 bytes. Found new synch word
Time 01:38:54.336; Frame#= 185449. Unsynchronized frame...SKIPPED 387 bytes. Found new synch word
Time 01:38:54.368; Frame#= 185450. Crc1 error FIXED: read = 7FFD; calculated=B587
Time 01:38:54.368; Frame#= 185450. Crc2 error FIXED: read = D6B5; calculated=581E
Time 01:38:54.400; Frame#= 185451. Unsynchronized frame...SKIPPED 381 bytes. Found new synch word
Number of written frames = 266607
Number of Errors= 24

So i do a bit of search in the forum and try the solution of using manually delaycut on the ac3 and reuse scenaid again ,but after is done it still desynced

so am wondering if the problem its the ac3 or the tool which extract the ac3 ? i use doitfast4u with header :use Dvd2avidg

Any tips will be very appreciated and if its possible i can use another tool to extract the ac3 since its just one audio on the dvd and insert it back on the folder and use back scenaid to save me another encode time please ?
thx

[Zeul]

I'd be very surprised if it was the extraction tool. All these tools do is extract the audio payload from the audio sectors in the vob file. So the problem is a corrupt audio file, which ac3fix might be able to correct. If you have numenu it is in the ac3 folder, if not it shouldn't take long to find it.

[omare]

i try ac3fix ,i still got same audio desynced at the end :(

[influenza]

Does the dvd have some strange structure, some cells that don't belong there, miussing vobids etc. Usually those things are at the beginning, but who knows.

Maybe you can post the dvd layout.

[Matthew]

One thing you can try is to manually insert a number of silent AC3 frames (at 01:38:54) such that the filesize is (almost) maintained.