Need help with AC3 -> MP2

[ookzDVD]

@forum,

I hope someone could help me with providing the good
BeSweetGUI profile for AC3 -> MP2 (for VCD compaint).

Thank you.

[tiki4]

Bah, profile,

besweet -core( -input in.ac3 -output out.mp2 -logfile BeSweet.log ) -azid( -n1 -c normal -s surround2 -L -3db -g max ) -ota( -d xx ) -mp2enc( -b 224 -m s -e )

That's it, although maybe you don't want to use surround2 and also you may have or have not a delay of xx ms. Also, leave out the -n1 if you deal with a 2 channel AC3.

Cheers,

tiki4

Edit: Damn. I forgot about 44,1 kHz. Most DVD players should play 48 kHz as well, but if you want to get 100 % spec compliant VCD audio, then add '-shibatch( --rate 44100 )' which does the downsampling.

[ookzDVD]

@tiki4,

thank you for the reply :) yes... VCD complaint is 44.100 :)

[tiki4]

Hm, and you need 224 kBit/s. In SVCD you can go lower. The VCD standard seems to be very strict (also constant bitrate MPEG1).

Have a very nice Easter! :D

tiki4

[ookzDVD]

@tiki4,

Happy Easter Day, Might God Bless you and all your family.

Btw, do you know good document to learn the BeSweet commands ?

[tiki4]

Thanks :)

Well, learning BeSweet command line. You may just read the help files that come with BeSweet. Otherwise I don't think so. You also may watch what all the different GUI's are doing. Actually, dealing with the CLI isn't that difficult. I know most of the other command line tools, like LAME, azid, oggenc, ssrc. Much of that stuff is in BeSweet.

However, I'm a bit of a UNIX/Linux guy most of the day (writing that on Netscape 7.02 running on SuSE Linux 8.2), maybe I got a bit of a different view on things. I don't like the GUI's as they try to hide from me what really happens. Also, I'm using BeSweet since 0.9 or so. It was easier to use then and I saw it growing.

tiki4

P.S.: I don't know if you need that, but to give you some more explanation. Above command line is something like this in the BeSweet GUI:

azid: LFE to LR: -3db
azid: dynamic compression normal
azid: downmix surround2
azid: gain maximize
ssrc: sampling rate 44100 Hz
toolame: bitrate 224 kBit/s
toolame: mode stereo
toolame: CRC enabled
BeSweet: pregain
BeSweet: delay xx ms
BeSweet: output MP2, SSRC enabled, decoding by azid.