Subtitles disappearing during playback

jbar wrote on 7/10/2004, 8:55 PM
Has anyone else seen this ??

In DVDA2a, I added a 2 hour movie (created in Vegas5b), with a couple dozen chapter points, as a single button on a single menu. I then added a subtitle track and imported the subtitles from the exported regions in Vegas.

I only had 2 subtitle texts, each lasting about an hour (basically the date of the original 2 videos that had been concatenated).

Sometimes, when jumping (either ff/rw or prev/next) around, the subtitles will not be shown. If the subtitle is showing, and I fast forward, most of the time, the subtitle will not be displayed again when I resume normal playback speed (btw, rewinding back to the point where it had been working does not make it work again). During that same spot, if I don't fast forward, the subtitle continues to be displayed correctly.

Certain chapters consistently are missing the subtitle if accessed via the prev/next buttons. If the subtitle is currently being displayed correctly and normal playback continues through those chapter points, the subtitle is displayed correctly (hitting prev will cause the chapter to start over and the subtitle to disappear). Certain points during playback (usually chapter points, I think), will cause a missing subtitle to be shown again.

I tested this in Windows Media Player 9, Power DVD 4, an Apex DVD Player and a Sony DVD Player to ensure it wasn't a compatibility issue.

In an attempt to narrow this down, I changed the out-point and deleted the second subtitle text. This left about a 1 hour video and only 1 subtitle. The problem still existed.

I took the sample project included with DVDA2, and changed it to have only 1 subtitle entry, but it didn't exhibit the same problem. I'm thinking it has something to do with the length of the video and consequently, the length of the subtitle entry.

Does anyone know how the subtitle (subpicture stream ?) fits into the DVD format ? It seems like jumping to certain points in the video is resulting in an inability to find the last subtitle entry (probably because it's not changing very frequently ?? which is probably not the way it's normally used).

Comments

SonySDB wrote on 7/12/2004, 6:11 AM
After fast-forward or rewind, the subtitles will not be displayed until the next start of a subtitle event or chapter point is encountered. To allow subtitles to be displayed sooner, break your 1 hour long subtitle events into smaller pieces.
AlistairLock wrote on 10/31/2004, 9:24 AM
I'm finding a similar thing happening at the moment in DVD arch.
I've subtitled a feature (38 minutes), and on playback, the sub titles "disappear". One moment they're coming up as programmed, and the next, they no longer display. This is during normal playback, no fast forward, rewind etc. If I try and turn them back on via the remote, the DVD player says that the subtitle is already turned on, yet no subtitles are displaying.

A tortuous work-around is to use the remote menu button to jump back and forth between menu and feature. This seems to "jog" the subtitles on.

Why is this happening?

Also, I've made a set-up page to globally turn subtitles on and off. I've added a button link to the main feature in that page. If I call the feature from that page having turned on the subtitles, they display, (and then keep turning off, see above). Calling any subtitled program from any other menu does not display the subtitles, even though all button calls are "subtitle: no change".

I've had to resort to creating two sets of menu pages: One menu set refers to "subtitle on", and all button calls set subtitles ON, and the other set is "subtitles OFF".

I've also tried using Adobe Encore, (which, with all the subtitles in place, will not compile the DVD) and one call to turn the subtitles on does just that.

Why then do I seem to have to duplicate all my menus in DVD arch, and why do subtitles keep on ceasing displaying?

Thanks.
AlistairLock wrote on 11/4/2004, 3:33 AM
Bump.
AlistairLock wrote on 11/5/2004, 6:11 AM
I thought I'd better add that this problem seems to be something do do with my (Marantz) DVD player, not DVD Architect. I tried it in a neighbour's machine, and it played fine.
This is the first time my machine has had a problem with a home cooked disc. I'm hoping that maybe when the disc goes off for duplication this problem won't manifest with the majority of players.

Interesting...
Mad_Clown wrote on 11/7/2004, 3:10 PM
I had this problem too whenever I used dvd architect (latest version). At first I thought it was my dvd player until I tried dvd-lab pro, whenever I author with dvd-lab pro I never have had any problems with subtitles disappearing. I used the same type of discs and tested them on the same dvd player.
AlistairLock wrote on 11/13/2004, 2:24 AM
Hi.
Could you clarify?
Are you using DVD Lab Pro to burn a disc created in DVDa, or are you simply saying that discs created and burned using DVD Lab pro don't exhibit this occasional subtitle problem?

Thanks.