DVD2SVCD-Andromeda DVD conv has Audio data bursts - Copy protection ?

[Archie_Yannas]

I have used DVD2SVCD109b3 to convert an ANDROMEDA DVD (PAL-Australian) to SVCD . Previous versions of DVD2SVCD failed to convert the audio, the ac3+mp2 files where blank. The latest version did convert the audio but it contains what look like high frequency, high level, square wave data bursts of .3ms in length at the beginning and at every fadeout/fadein point(commercial breaks).
There is the possibility that its some type of copy protection. These high frequency squeals have the capacity of blowing up your speakers.
The dvd and vob files play correctly in a DVD player or PowerDVD. The problem is possibly in the AC3 rip or the MP2 conversion.
Any ideas, anyone
thanks
:confused:

[JohnJ]

Hi tried to burn the time machine but have out of sync problems. What makes me wonder if my problem has something to do with yours is that wmp plays the disk back but with hi squeal bursts!
Also there seems to be some sort of private stream.
I did post about this but no reply.
regards John

[Archie_Yannas]

Well I managed to fix it with a work around. I demultiplexed the SVCD Mpg file with Tmpgencoder(mpeg tools- Simple demultiplex) and dumped the split MP2 audio file into Sound forge 5 and replaced the sections with data bursts with silence. The trick here is to note the total length of the file e.g. 41:08.883sec and remove the bursts in multiples of 100ms, because you need insert silence in there place and Soundforge inserts silence in 100ms blocks. If you choose to delete and reinsert 430ms you'll find it will insert more and put your audio out of sync later. After I removed all burts I saved the file as a WAV. I used TMPGencoder to convert the audio from WAV to MP2 again. Then use Tmpgencoder(mpeg tools- Simple multiplex) to mux the new audio MP2 stream with the original M2V video stream.

Also note, and I suspect this has something to do with the bursts I needed to at an extra 100ms of silence at the begining of the audio as I noticed the sync was ever so slighty out from begining to end.

I played the original ac3 track in Sonic Foundry Soft Encode 5.1 and found no data bursts so I think its the AC3 to MP2 conversion thats causing the issue. Whether this is some form of copy protection or BeSweet failing I dont know but versions of DVD2SVCD pre 109b3 only gave me blank audio track with data burst in the beginning.

[JohnJ]

Hi,
Saw your post about the work around. I have got rid of the bursts of sound, but still have the same out of synce problems. tried 13 ghosts as well, and this seemed to have the same problem.

The work around seems a bit complicated but i see what you mean.

Any other suggestions or an easy way most welcome.

I seemed to have cleared the audio track of any sound birst ripped de + multi plxed a few times and multiplexed. But the sound starts off okay then gets out of sync.

Again picture judder problem?

Spent about 5 days on this one so far........
John

[Archie_Yannas]

Hi,

Yes, the process is long winded but that's because I don't have an application that can open, edit and save the audio as an MP2.
If you’re experiencing video judder then I can only suspect dropped frames in the video conversion. This will always cause audio sync problems.
Does the original MPEG conversion(with data bursts) have audio sync problems? If yes, then you must fix that issue first. Otherwise
as I mentioned earlier, when removing the bursts you must make sure the added silence doesn’t extend or shorten the audio track.
Off course if you can’t fix the video problem and the audio goes out of sync progressively throughout the movie you can use Sound forge to stretch or shrink the audio track as required by checking the time difference at the end of the movie and multiplexing again.
The conversions I had audio issues with didn’t have any video problems.
What are you’re PC specs, CPU, OS etc. Usually this is cause of video problems more often than not.

Archie

[JohnJ]

Hi,
Right I am running windows XP with a athlon xp2000.

memory 520 1x cdrw 1x dvd reader 1x dvd burner

1x 10ghd 1x 40ghd 1x 120ghd

cooling of system running at 41deg

I burnt a copy of the mummy returns with no problem. But when I try either 13 ghosts or the time machine I have the problem. The file plays fine on the PC in WMP.
The time machine has a funny twist to it. WMP will play the vopb files but you get all audio and a high pitched noise then the picture stops. Normally it just comes up encrypted or copy protected when trying to access straight from the disc.

Using dvd2svcd. The only setting i altered was to smartdeinterlace or could this be my problem?

As i am having a problem with cdraoe i am puting the two files toghether with tmpg and then burining them to dvd with ulead dvd workshop.

The sound birsts do not get through on the final bit. I have noticed that the times when video and audio are split do differ. I have spent about 5 days trying to get the time machine right to no avail.

I am just trying dvdtoavi on the video to 13ghosts then tmpeg again and see what happens.

I cannot understand why i have no problems with older disks but the new ones have this problem. Stikes me there is some thing some where that gets picked up and shoots everything out??

Thanking you in advance John.

[Archie_Yannas]

Hi,
Ok, the PC seems capable enough.
I can only suggest to try ripping the dvd with smartripper instead of dvd2svcd and see if it still has vob file problems.
I'm not sure I would use WMP to test in this case as I can understand why the data burst of this magnitude would interupt the playng of the video.
I'm sorry I cant offer any advice on your cdraoe problem as I have yet to utilize this option.
I've just found out "Time machine" wont be released here until 14 October so I cant test or make copy for myself yet.
Keep trying.

Archie

[JohnJ]

Hi,
I tried smart ripper that was one of the various ripping programs I tried! (Smart ripper, it rips, clad dvd etc)

What I cant make out is why the files play okay on the PC, but wont go back together onto a dvd or video cd?

Just tried burning another copy of 13ghosts and the files played okay on the PC.

But again when put back onto disk audio out of sync again.
Tried burning captured video with no problem. Even done a "test cartoon" with no problems.

Both disk were imported region 1 disks (ntsc). As was the mummy returns which was okay.
So, have "they" found a spanner that they can put in the works?
Just 2 let you know, I live in the UK.
Regards John

[Archie_Yannas]

Hi John,
If the DVD is NTSC-29.9fps region1 then does that mean your trying to convert it to PAL-25fps ? Because I always avoid the conversion.
It usually means that it drops 5 frames to make the conversion which can make the video look slightly jerky and intern cause audio sync issues depending on the conversion program your using. Are you using DVD2SVCD in CCE or TMPGencoder mode ?

When you say "What I cant make out is why the files play okay on the PC, but wont go back together onto a dvd or video cd?" Do you mean the SVCD MPEG plays on pc correctly, but wont play well when burnt onto a CDR or DVDR and played in your commercial home DVD palyer?
Maybe you used an execisley high bite rate . I usually mine to max=2496kbps, min=300, maxav=2300kbps in VBR 4pass mode when using a 224kbps Audio track.

I was just reading the news and the new versions of BeSweet seems to have a few bugfixes which may help us. If you replace the besweet in the DVD2SVCD dir with the new one and see what happens ?

Otherwise I'm no sure how much more advice I can offer for your problem, running out of ideas.

Arthur

[JohnJ]

HI using CCE. I did try an NTSC version but still had the same problems. Yes the file plays perfect on the PC. Using ulead dvd factory at abot 3000 mbps. Tried different rated etc.

Could it be a ulead problem?
Because of a conf;ict with XP and cdraeo i havent managed to burn a svcd yet. Although what i did had the same problem.

Again though I am confused why the mummy returns region 1 ntsc i had no problems with, yet 13 ghosts and also the time machine i have the problems?

Might try time machine ntsc and do ulead ntsc disk and see what happens (thank ~~ for dvdr!)

PS is there a link for besweet?
John

[Archie_Yannas]

Hi

You can get besweet from the link on the Homepage news www.doom9.org .

Arthur