BeSweet + AC3Enc: Tag generated 2.0 AC3 as "surround" if downmix was used

LigH · 26th October 2005, 14:54

Unfortunately, I don't find the "BeSweet wishlist" thread anymore; if a moderator could join this thread if possible?
__

There was a question in the german board, why a 2.0 AC3 audio file created with BeSweet was not detected as "surround" although DPL or DPL-II downmix was used.

I know that it is possible to tag AC3 audio streams as surround encoded. But at the moment, there is no interface between BeSweet code and AC3Enc DLL which would allow the encoder to alter the output AC3 stream accordingly.

So I wonder if DSPguru would find that useful and could enhance this interface. And DSPguru would have to join this development, it cannot be done in AC3Enc only (the simplest solition may be to only add a parameter, a better one may be the passing of the usage of "dpl/dplii" downmix).

LigH · 12th November 2005, 12:27

Ah, I see - no interrest...

DarkAvenger will probably implement such an interface into HeadAC3he.

tebasuna51 · 13th November 2005, 03:46

I think isn't the main problem of ac3enc-BeSweet, others parameters like DRC or Dialog Norm, the max volume level (-6 dB) ... are more important for me.

Is easy make a little prg to set this flag in an ac3. If you think this can help anybody I can make it.

LigH · 13th November 2005, 12:15

Indeed, there are more flaws of AC3Enc. DarkAvenger found and fixed a few with the help of several members of the german board (Linux is much more forgiving than Windows, and DA develops under Linux primarily).

A header patcher for surround tagging would be an easy temporary solution in the meantime, until DA may implement this functionality (but he has to fix cross-platform GUI programming problems before).

26th October 2005, 14:54	#1 \| Link
LigH German doom9/Gleitz SuMo Join Date: Oct 2001 Location: Germany, rural Altmark Posts: 6,782	BeSweet + AC3Enc: Tag generated 2.0 AC3 as "surround" if downmix was used Unfortunately, I don't find the "BeSweet wishlist" thread anymore; if a moderator could join this thread if possible? __ There was a question in the german board, why a 2.0 AC3 audio file created with BeSweet was not detected as "surround" although DPL or DPL-II downmix was used. I know that it is possible to tag AC3 audio streams as surround encoded. But at the moment, there is no interface between BeSweet code and AC3Enc DLL which would allow the encoder to alter the output AC3 stream accordingly. So I wonder if DSPguru would find that useful and could enhance this interface. And DSPguru would have to join this development, it cannot be done in AC3Enc only (the simplest solition may be to only add a parameter, a better one may be the passing of the usage of "dpl/dplii" downmix).

12th November 2005, 12:27	#2 \| Link
LigH German doom9/Gleitz SuMo Join Date: Oct 2001 Location: Germany, rural Altmark Posts: 6,782	Ah, I see - no interrest... DarkAvenger will probably implement such an interface into HeadAC3he.

13th November 2005, 03:46	#3 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 6,915	I think isn't the main problem of ac3enc-BeSweet, others parameters like DRC or Dialog Norm, the max volume level (-6 dB) ... are more important for me. Is easy make a little prg to set this flag in an ac3. If you think this can help anybody I can make it.

13th November 2005, 12:15	#4 \| Link
LigH German doom9/Gleitz SuMo Join Date: Oct 2001 Location: Germany, rural Altmark Posts: 6,782	Indeed, there are more flaws of AC3Enc. DarkAvenger found and fixed a few with the help of several members of the german board (Linux is much more forgiving than Windows, and DA develops under Linux primarily). A header patcher for surround tagging would be an easy temporary solution in the meantime, until DA may implement this functionality (but he has to fix cross-platform GUI programming problems before).