BeSweet & mono-wav->ac3 1.0 conversion incompatible?

[Spektakulum]

The only tool I found so far be able to create ac3 mono/1.0 seems to be Steinberg Nuendo 2 with the dolby plugin.

I tried, but there's just silence when I export to 1.0 -with 2.0 and stereo-wav it works. :confused:
Anyone can explain me what I'm doing wrong? I'm currently working on converting an old tv-series which would need 11 DVD's and want to make it professional without faked ac3-stereo sound.

[Asmodeus]

Try with ffmpeg, but through command line, cause all GUIs I know do not support mono AC3.
ffmpeg -i "test.wav" -ab 128 -ar 48000 -ac 1 -acodec ac3 -hq -y "test.ac3"
-ab(bitrate) ; -ar(sampling) ; -ac(number of chanels)

[Spektakulum]

Looks promising - unfortunately Maestro recognizes more then double lenght as the original wav. Nueno tells the right length, so there must be some little bug in it, I guess?

With the "create sync audio track" function in Maestro I got the length right, I'll burn a dvd for testing. :)

[Spektakulum]

Unfortunately the stream wasn't compatible with Maestro - the soundtrack was in halfspeed when played on DVD. :(

[Spektakulum]

I'm trying to convert a mono-wav to AC3 1.0.

Though I thought BeSweet doesn't support AC3 1.0 at all, giving it a mono-wav as input resulted in exactly that.

With Nuendo 2 I can hear the AC3-file without any problems, but when imported in DVD-Maestro it gets a bit more then doubled length and the sound runs at half speed. In both cases it is recognized correctly as 1.0!

What I expected was an converting to 2.0 as it stated to not support 1.0 at all, or is it supported and there is some bug in it?


commandline:

"d:\Programme\AV\BeSweet\BeSweet.exe" -core( -input "e:\The Addams Family - Die Serie\02 Pugsley braucht einen Psychater.wav" -output "e:\The Addams Family - Die Serie\02 Pugsley braucht einen Psychater-New.ac3" -logfile "D:\Programme\AV\BeSweet\BeSweet.log" ) -ac3enc( -b 192 ) -profile( ~~~~~ Default Profile ~~~~~ )

logfile:

BeSweet v1.5b26 by DSPguru.
--------------------------
Using AC3enc.dll v1.20 (Feb 18 2004) by Fabrice Bellard (http://ffmpeg.org).

Logging start : 04/13/04 , 22:56:27.

d:\Programme\AV\BeSweet\BeSweet.exe -core( -input e:\The Addams Family - Die Serie\02 Pugsley braucht einen Psychater.wav -output e:\The Addams Family - Die Serie\02 Pugsley braucht einen Psychater-New.ac3 -logfile D:\Programme\AV\BeSweet\BeSweet.log ) -ac3enc( -b 192 ) -profile( ~~~~~ Default Profile ~~~~~ )

[00:00:00:000] +------- BeSweet -----
[00:00:00:000] | Input : e:\The Addams Family - Die Serie\02 Pugsley braucht einen Psychater.wav
[00:00:00:000] | Output: e:\The Addams Family - Die Serie\02 Pugsley braucht einen Psychater-New.ac3
[00:00:00:000] | Floating-Point Process: No
[00:00:00:000] | Source Sample-Rate: 48.0KHz
[00:00:00:000] +------- AC3ENC ------
[00:00:00:000] | Bitrate method : CBR
[00:00:00:000] | AC3 bitrate : 192
[00:00:00:000] | Channels Mode : 5.1
[00:00:00:000] | Error Protection: Yes
[00:00:00:000] +---------------------
[00:24:21:876] Conversion Completed !
[00:00:39:000] <-- Transcoding Duration

Logging ends : 04/13/04 , 22:57:06.



:confused:

[KpeX]

I don't think that BeSweet supports mono conversion, as you can see the AC3 channels mode is listed as 5.1. This looks like an ffmpeg problem to me and not a besweet one, you should check into the ffmpeg homepage/mailing lists to see if it even supports mono encoding.

I have merged your two threads on the subject.