APF_Gandalf
22nd April 2003, 09:32
I found it after considering that one of the DVD I wanted to backup had some strange values for the audio in the original IFO ( 3 streams with 192k 2ch ) when I got really different ones when demuxing:
PGC1 and 2 had 3x 384k 2ch (0x80->0x82)
PGC3 had 1x 192k 1ch (0x80), 2x 192k 2ch (0x81->0x82)
PGC4 to 19 had 1x 192k 1ch (0x80), 1x 448k 5ch (0x81) and 1x 192k 2ch (0x82)
PGC20 had 1x 192k 1ch (0x80), 2x 192k 2ch (0x81->0x82)
With the IFO saying that all the audio , no matter their real bitrate, were 192k 2ch, I guessed that there is a way to force the audio to a certain bitrate regardless of its real bitrate.
This DVD made me mad for about 3 days before I realized that there is no way to force the bitrate in scenarist.
But when I accidentally double-clicked the .scp file I made to add chapters with scenChap, I saw something like this:
Item=AC3 Audio
{
Place Holder=No
Comment=
Name=VTS__01_P01-80-448K-[0ms]
Resolution=NTSC
Drop Type=Non-drop frame
Data Start Time=00:00:00:00
Data End Time=01:48:11:20
File=Z:\DVD_Backup\VTS01\VTS__01_P01-80-448K-[0ms]-ch2Japanese.AC3
Audio Type=AC3
Bit rate=448000
Channel=3 : 2
LFE On=Yes
Bsmod=complete main
you can see the 3 interesting lines that are bit rate, channels and LFE on.
I simply changed all of the bitrate values in this file to "192000", all the channel values to "2 : 0" and all the LFEon to "No". (in fact, you can set any value as far as they are all identical within the same 0x8*).
after this, I simply imported my script to scenarist and compiled.
Please note that the estimated DVD size when compiling isn't accurate anymore, but who cares.
I hope this will help.
PGC1 and 2 had 3x 384k 2ch (0x80->0x82)
PGC3 had 1x 192k 1ch (0x80), 2x 192k 2ch (0x81->0x82)
PGC4 to 19 had 1x 192k 1ch (0x80), 1x 448k 5ch (0x81) and 1x 192k 2ch (0x82)
PGC20 had 1x 192k 1ch (0x80), 2x 192k 2ch (0x81->0x82)
With the IFO saying that all the audio , no matter their real bitrate, were 192k 2ch, I guessed that there is a way to force the audio to a certain bitrate regardless of its real bitrate.
This DVD made me mad for about 3 days before I realized that there is no way to force the bitrate in scenarist.
But when I accidentally double-clicked the .scp file I made to add chapters with scenChap, I saw something like this:
Item=AC3 Audio
{
Place Holder=No
Comment=
Name=VTS__01_P01-80-448K-[0ms]
Resolution=NTSC
Drop Type=Non-drop frame
Data Start Time=00:00:00:00
Data End Time=01:48:11:20
File=Z:\DVD_Backup\VTS01\VTS__01_P01-80-448K-[0ms]-ch2Japanese.AC3
Audio Type=AC3
Bit rate=448000
Channel=3 : 2
LFE On=Yes
Bsmod=complete main
you can see the 3 interesting lines that are bit rate, channels and LFE on.
I simply changed all of the bitrate values in this file to "192000", all the channel values to "2 : 0" and all the LFEon to "No". (in fact, you can set any value as far as they are all identical within the same 0x8*).
after this, I simply imported my script to scenarist and compiled.
Please note that the estimated DVD size when compiling isn't accurate anymore, but who cares.
I hope this will help.