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View Full Version : Play All option on Episode dics an Doitfast4u


stopthepain
29th June 2003, 18:27
I haven't seen this addressed on the forum anywhere, so i'm going to ask..

When workig with an episode disc, there is usually 1 pgc that is for the "Play all" option. When you demux the disc, that PGC turns out to be the size of the whole disc.

For Example: If a disc has 4 episodes, each being 1.5gb when demuxed, then there will be 1 pgc that is 6gb. If that were the way the disc was really layed out, then the original disc would have been at least 12gb.

When you load it into Reauthorist, it encodes the disc thinking that that PGC should be as big as it is. thus bringing the encode rate down to 20% of the video's original size.

I have tried both deselecting that PGC from DIFFU and reauthorist, which gets the disc to the correct size, but of course the "Play all" selection does not work.

I am using DIFFU 1.1.6 (this is a BETA, but this has been happening from the start) and of course, Reauthorist 1.0

hendrix
30th June 2003, 01:54
instead of demuxing the whole PGC try demuxing per vobid
and manually import them into Scenarist to the proper PGCs

influenza
30th June 2003, 08:58
What is usually done with these kinds of titles is the following. Let's assume we have 3 episodes:

PGC1: play all episodes
pgc2: play episode 1
pgc3: play episode 2
pgc4: play episode 3

MOST of the time all three pgcs use the same vodid (usually 1). Check this out in ifoedit.

There are usually two ways to approach this:

1) Demux by vobid, extract the chapters by vobid with ifoupdate. Recreate the exact structure in for example scenarist.
2) Demux by pgc, but only choose the largest PGC, in this case #1 and get chapters points for that. DO NOT demux pgc 2,3,4 and reencode those, because then you will end up with a video that's twice as big. This is a form of seamless branching, so the video is reused in the different pgcs. Then you recreate all pgcs again based on PGC1.

Method number two can only be used if PGC1 contains all vobids and chapter points used in the entire set.

SO for example (possible to use method 2):

pgc1 has

VOBID 1/1
VOBID 1/2
VOBID 1/3

Pgc 2
VOBID 1/1

PGC 3
VOBID 1/2

PGC 4
VOBID 1/4

Example 2 (not possible to use method 2)

pgc1 has

VOBID 1/1
VOBID 1/2
VOBID 1/3

Pgc 2
VOBID 1/1

PGC 3
VOBID 1/2

PGC 4
VOBID 1/4
VOBID 1/5 -> this one is not used in PGC1 so the demuxing by PGC is not possible, since you will miss vobid1 cell 5.

stopthepain
1st July 2003, 04:25
Thank you for your response! I appreciate it!

influenza
1st July 2003, 07:33
Yor welcome. What I forgot: if you can use method 2 you can also only recreate pgc1 and use ifoupdate in adjusted cell mode (save the chapters in adjusted cell mode too ofcourse)