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View Full Version : 25fps 5.1 ac3 to 23.976fps 5.1 ac3


six6
22nd March 2004, 01:41
I'm wondering if the process I use is a ``good'' way to convert 25fps 5.1 ac3 to 23.976fps 5.1 ac3: I used headac3he to convert the ac3 into a "6ch" wav, used BeSplit to split the wav into 6 mono wavs, adjusted each wav to 23.976fps with BeSweet, then re-encoded back to ac3 using <my fav ac3 converter>. Is there an easier/faster way?

Also, I couldn't figure out a working CLI for BeSweet to load a mono wav, adjust the framerate from 25fps to 23.976fps, and output a mono wav. I tried guessing various mono command switches like:

BeSweet.exe -core( -input <path>.wav -output <path>.wav -<m, mono, etc> )

all to no avail. I'd guess there is a way that I just can't figure/find out. :rolleyes:

If there is no way, I thought I'd adjust the fps of each mono wav in BeSweet and get a standard stereo wav. Then I'll use BeSplit (again), and just discard one of the channels (they're both the same, right?). Would that be a good method?

Finally, is the channel mapping of a 6ch ``typical film'' wav separated by BeSplit: FL,C,FR,SR,SL,LFE?

I hope all you smarties have a super-fast way of skipping all this nonsense!

Matthew
24th March 2004, 23:44
Here is one way of doing it...requires besweet+softencode. Will re-encode D:\test\file.ac3. Note that softencode's command-line is picky about the directory it's installed in...a simple dir on the root of a drive is a good idea.

SET SWEETDIR=C:\program files\besweet
SET SOFTDIR=C:\softencode
SET DIR=D:\test
SET NAME=file
cd /D %SWEETDIR%
BeSweet.exe -core( -input %DIR%\%NAME%.ac3 -output %DIR%\%NAME% -6ch -logfilea %DIR%\BeSweet.log ) -ota( -r 25000 23976)
cd /D %SOFTDIR%
Sftencdd.exe -A -P %DIR%\softencode.ini -o %DIR%\seoutput.ac3 -L %DIR%\%NAME%FL.wav -R %DIR%\%NAME%FR.wav -C %DIR%\%NAME%C.wav -l %DIR%\%NAME%SL.wav -r %DIR%\%NAME%SR.wav -e %DIR%\%NAME%LFE.wav

softencode.ini contains the settings to use. e.g.

[Parameters]
DataRate=448
CodeMode=7
BSMode=0
DlgNorm=27
SampleRate=0
UseLFE=On
Cmix=0
SurMix=2
DolbySurround=0
CopyRight=On
Original=On
RoomType=2
MixLevel=26
Deemphasis=Off
DCFilter=On
BandWidthFilter=On
LFEFilter=On
Phase90=On
Cut3dB=On
CompressiOnType=1
RFCmpInUse=On
NOnIntel=Off
TimeStamp=On

six6
26th March 2004, 07:08
Ahh, I think that is a really good way. If I can find softencode around for a reasonable price, I'm definitely going to give that a try. Thanks!