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Christoph Rau
11th February 2003, 09:30
I need to remove 500 ms from an AC3 audio stream at a specific point (42 minutes into the track). I do not want to manipulate the stream in any other way so I want to create to splits, one from beginning to 42 minutes, on from 42:00:5 minutes to the end and join the 2 again.
I used the following 2 commands for the splits :
d:\download\BeSweet\BeSweet.exe -core( -input f:\video\surroundneu.ac3 -output f:\video\surroundneu1.ac3 -logfile f:\video\log1 -payload ) -split( -end 2520 )
and
d:\download\BeSweet\BeSweet.exe -core( -input f:\video\surroundneu.ac3 -output f:\video\surroundneu2.ac3 -logfile f:\video\log2 -payload ) -split( -start 2520.5 )

The result of the second is as desired : new AC3 file starting at 42:00:5. The first command however produces an AC3 file equivalent to the orignal one.

What am I doing wrong ?

Both logs attached :
-----------------------------------------------------
BeSweet v1.4 by DSPguru.
--------------------------
Using azid.dll v1.8 (b825) by Midas (midas@egon.gyaloglo.hu).

Logging start : 02/10/03 , 21:54:40.

d:\download\BeSweet\BeSweet.exe -core( -input f:\video\surroundneu.ac3 -output f:\video\surroundneu1.ac3 -logfile f:\video\log1 -payload ) -split( -end 2520 )

[00:00:00:000] +------- BeSweet -----
[00:00:00:000] | Input : f:\video\surroundneu.ac3
[00:00:00:000] | Output: f:\video\surroundneu1.ac3
[00:00:00:000] +-------- AZID -------
[00:00:00:000] | Input Channels Mode: 3/2, Bitrate: 448kbps
[00:00:00:000] | Output Stereo mode: Dolby surround compatible
[00:00:00:000] | Total Gain: 0.000dB, Compression: None
[00:00:00:000] | LFE levels: To LR -INF, To LFE 0.0dB
[00:00:00:000] | Center mix level: BSI
[00:00:00:000] | Surround mix level: BSI
[00:00:00:000] | Dialog normalization: No
[00:00:00:000] | Rear channels filtering: No
[00:00:00:000] +---------------------
[ 574561792] Conversion Completed !
[00:01:14:000] <-- Transcoding Duration
Logging ends : 02/10/03 , 21:55:54.

-----------------------------------------------------------
BeSweet v1.4 by DSPguru.
--------------------------
Using azid.dll v1.8 (b825) by Midas (midas@egon.gyaloglo.hu).

Logging start : 02/10/03 , 21:56:27.

d:\download\BeSweet\BeSweet.exe -core( -input f:\video\surroundneu.ac3 -output f:\video\surroundneu2.ac3 -logfile f:\video\log2 -payload ) -split( -start 2520.5 )

[00:00:00:000] +------- BeSweet -----
[00:00:00:000] | Input : f:\video\surroundneu.ac3
[00:00:00:000] | Output: f:\video\surroundneu2.ac3
[00:00:00:000] +-------- AZID -------
[00:00:00:000] | Input Channels Mode: 3/2, Bitrate: 448kbps
[00:00:00:000] | Output Stereo mode: Dolby surround compatible
[00:00:00:000] | Total Gain: 0.000dB, Compression: None
[00:00:00:000] | LFE levels: To LR -INF, To LFE 0.0dB
[00:00:00:000] | Center mix level: BSI
[00:00:00:000] | Surround mix level: BSI
[00:00:00:000] | Dialog normalization: No
[00:00:00:000] | Rear channels filtering: No
[00:00:00:000] +---------------------
[ 433411328] Conversion Completed !
[00:01:09:000] <-- Transcoding Duration
Logging ends : 02/10/03 , 21:57:36.

Christoph Rau
11th February 2003, 17:05
I should add that I did get it to work by decoding and encoding the stream

DSPguru
11th February 2003, 22:32
use BeSplit, or BeSweet v1.5

bond
11th February 2003, 22:47
@christoph

how did you find out the exact point where to split?

Christoph Rau
12th February 2003, 10:19
@DSPguru
thanks, will try

@bond
I have 2 recordings of the same film, one with 2ch stereo, one with AC3 sound. I want to multiplex video from the 2ch version and both sound streams into 1 DVD. Demultiplexing the 2ch version with dsjar it tells me that video frames where dropped at this timestamp and the timing difference detected was 480 ms. So I know I have to cut at this point.
Turned out I had to cut out 1 second - don't know why. Does Besweet support split arguments of fractions fo seconds ?