No sound in DVD Lab ???

[Stratjkt]

Seems I can't hear any sound when playing a video in DVD Lab? Is this normal? If I can't here the sound as the video plays how can I tell if it is in sync?

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[buzzqw]

in preview mode dvdlab don't mux audio/video so you cannot hear audio :(

look at duration of audio&video , if you have a difference of 1 sec or less it is ok.

else try muxing vob and play with windvd

i think a full preview fuction will be available in dvdlab pro

BHH

[Stratjkt]

Does anyone know why the sound on the generated VOB would be in sync at the beginning and be off sync by the end of the movie?


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[dwflo]

@buzzqw

I just compiled my first DVD using DVD-lab, from some SVCD videos.
I used VCD Easy to rip and convert the files to be DVD compliant.
Then had DVD-lab demux to resample the audio to 48k.

When I played the compliled DVD file, in PowerDVD, there was no sound.

Doesn't DVD-lab mux the audio when it compiles the DVD?
As far as checking the duration of the audio, I did not do that. Will start from the beginning and try again.

BTW, I am just beginning to learn DVD Authoring, pretty much by trial an error. Got plenty of time to waist.

[buzzqw]

> Then had DVD-lab demux to resample the audio to 48k.
i usually do the transcoding with BeSweet ...

Have you any warning when adding audio/video to project file ? or when compiling ?
What kind of audio are you muxing ,mpeg2 i suppose, but what bitrate ?

>When I played the compliled DVD file, in PowerDVD, there was no sound.

quite strange ...

>Doesn't DVD-lab mux the audio when it compiles the DVD?
sure it muxing (i tryed with ac3/pcm/mpeg2)

Best regards

BHH

[mudda_t]

posted by dwflo
I used VCD Easy to rip and convert the files to be DVD compliant.
Did you convert your video? Dvdlab lets you author a dvd with 480x480. No need to convert. Svcd is mpeg2 which is dvd compliant.
Then had DVD-lab demux to resample the audio to 48k.
Dvdlabs transcoder is EXTREMELY picky with audio, i've had it quit after only 30 seconds from a 1hr clip, it didn't report any errors. Always keep an eye on the runtime of your audio after lab has transcoded to make sure it matches with your vid. Also, Labs transcoder sometimes leaves pops/cracks in the new audio. I use EXPStudio's Audio Editor to do my transcoding link (http://www.expstudio.com), perfect results every time.

[dwflo]

@buzzqw

Duh...

Found out why I had no audio...didn't drag my audio files to the Movie box. (see my signature below...that will seem fitting)

Better do my homework better before sticking foot in mouth.:D

But I did have an mpeg, as it was being demuxed into the assets list, fail half way through the file and indicated it had an encrypted video stream, the file could not be demuxed.

How can a video file obtain encryption halfway into it?
The SVCD was originally created by DVD2SVCD and CinemaCraft!:confused:

Thanks for all your help.

[buzzqw]

@dwflo
>How can a video file obtain encryption halfway into it?

Afaik no. Try demuxing with other tool (tmpeg mpeg-tools, mpeg2vcr(womble) ).
You can also try "rewrite gop time" or "fix stream header" in dvdlab


BHH