Menu audio issue

[tecstar]

I wondered if anyone had come across this issue before.
I have authored a DVD with Sony DVD Architect 4.
I have a main menu that plays an audio track. I found that when i played the DVD in some players it miss the first second or so of audio. To get round his i added 1.5 seconds of silence to the audio track, which isnt a big problem, but I wondered if this was an authoring problem rather than a DVD Player hardware problem. If I write the files to a folder and play from the hard drive it plays fine, but thats not the same as a player reading a disc, is it?

[guns1inger]

If the players are connected to decoding amps via digital connection there may a delay in setting up the connection, switching the decoder internally, then playing. Many amps, especially older ones, don't kick in the decoder until a signal is received, then they determine which decoder is required (DD or DTS) then they start decoding. The same disc, played with the player set to output PCM instead of a bitstream, may not exhibit the same delay.

[tecstar]

These are just standalone players - no home cinema kit at all. But I suppose it could be internal to the player??

[tecstar]

just rechecked on my sony dvd player - 4 seconds before audio kicks in!

[tecstar]

I burnt a test project with VS9. I wrote the files to a folder, then burnt with Nero 7.
When played in a DVD player, the menu audio plays instantly.
I did the same with a new Sony DVD Architect Studio 4 project, but there is a 4 second delay before the audio kicks in when i play the DVD in a DVD player (sony, as it happens!).
If i play the files from the Video_TS folder on the hard drive, the audio is fine. If I play the disc on a PC, it works fine. Its only when a DVD player has to read the disc that there is the issue.
DVDAS4 must have done something to the files to cause this to happen.

In both cases I used the same menu audio, and wrote the files to video_ts folders on my hard drive before burning, burnt to the same DVD+RW disc, and played in the same DVD player.

Can anyone help with this or do i look for another piece of s/w to create my menus???

[tecstar]

Just read this somewhere. Is this correct? I have added 1.5 seconds of silence at the beginning of my audio, and it didn't make a difference.

"I remember reading some white paper documentation on AC3 audio, and the long and short of it is to be sure to leave a small (nothing. silence) buffer at the beginning and end of the audio track. Without this, you stand a good chance of either a delay in starting menu audio or II have also seem the last .5 (one-half second) seconds chopped off. Then, you can take thaty same DVD to a different player and it can behave slightly differently...and this was all without DVD-A. It was with another DVD authoring package; not a cheap one.

I leave anywhere from 15 to 23 frames of silence at the head and tail of my audio and have never had to worry about it again."

[tecstar]

Forgot to mention, audio is 2ch AC-3 on both projects.

[tecstar]

Burnt a project with DVDLab and it is also i ok, so Sony DVD Architect Studio 4 must create the files in a peculiar way. Shame, as I like the app. I'll wait for DVDAS5 to see if that fixes it.