PS3 Scene Search on some streaming VOB's and not others

The newest PS3 firmware 2.50 adds a “Scene Search” feature that displays thumbnails of a video at user-determined time intervals (1 minute, 2 minutes, etc.). You can then select the thumbnail to jump to that spot in the video. However, the feature shows as “This operation is not available here” in many of the VOBs I rip and stream.

I rip all of my DVDs using the same software and settings: DVDFab 5.1.0.0 - VOB Passthrough - Main Movie Only. This creates a single VOB that I stream from my Buffalo Terastation Live using Twonky 4.4.6.

For the VOBs that have the Scene Search feature available, I am able to advance through a movie far faster than the VOBs in which Scene Search doesn’t work. In the latter, after a long FF, I may have to wait several minutes for the video to restart at the new spot. With Scene Search, the video begins to play almost immediately after advancing.

Can anyone tell me why Scene Search would be available for some ripped movies and not others? Does this have something to do with indexes that are/are not encoded into the original DVD?

Thank you in advance for your help/suggestions.

I’m just guessing, but there are two likely culprits and both have to do with the original DVD encoding.

On many DVD titles, the movie is made up of multiple segments added together. The problem is that the different sections don’t have time codes that are continuous so when you stitch them together with VOB passthrough the PS3 isn’t able to give you a good time reading. This type of problem can usually be fixed by using tsMuxer to generate a M2TS file and then rename it to VOB but sometimes results in the audio being out of sync.

Another factor is the number of I-Frames in the stream. These are key points where the fast forward and rewind can stop at. If these are far apart then it will take the streaming device a while to serve up the specific frame at the 2-min mark that the PS3 is asking for. Keep in mind that these streaming devices usually have very limited memory and CPU.

I rarely bother with trying to correct the time code issue since the latest PS3 firmware(s) seem to play everything without trouble. When the streaming device stalls, what works for me is to just press stop and then play again rather than wait for the device to catch up.

Thank you for the awesome reply. I agree that the problem is probably due to the original DVD encoding. I am not savy enough…or ambitious enough to go through much time or effort to rip my DVDs. That’s one of the things I like about DVDFab and the VOB passthrough capability. The ripping is simple, fast and works well with my TeraStation Live NAS, Twonky and the PS3. I may try the tsMuxer method you suggest just for grins and post the result.

Thank you again.

Complication: I learned another valuable piece of information from your post. When fast forwarding, I always would sit and wait for the video to catch up to the stalled frame that was being displayed…sometimes for several minutes. Until your post, I didn’t realize that I could hit stop and play to get the video started immediately at the new spot. I am thrilled to know this “new-to-me” feature…Thanks!

It is weird to me that FF displays the frames as it progresses; but can’t restart at the advanced point immediately when you hit play. Is this an issue with the video, the DLNA Server or the PS3?

[quote=jfourman;2155247]
It is weird to me that FF displays the frames as it progresses; but can’t restart at the advanced point immediately when you hit play. Is this an issue with the video, the DLNA Server or the PS3?[/quote]

I think it is the DLNA server trying to catch up to the PS3 FF requests. If you copy the movie to the PS3 hard drive it doesn’t pause at all.