sundance
11th July 2002, 09:59
Just tried to transcode an 448kbps AC3 track from "Ronin" to 384kbps using AC3Machine with the latest BeSweet v1.4b13. I wonder where those downmix overflows originate since I didn't downmix anything but just re-encoded the AC3 stream. I know I probably can't hear those little distortions (they're all in shoting/explosion scenes) or I could easily apply a -1dB gain to solve it - it's just for my understanding how things work...
Here's the log:
BeSweet v1.4b13 by DSPguru.
--------------------------
Using azid.dll v1.8 (b825) by Midas (midas@egon.gyaloglo.hu).
Using AC3enc.dll v0.1 by Gerard Lantau & Dg (http://ffmpeg.org).
Logging start : 07/10/02 , 10:50:49.
BeSweet.exe -core( -input F:\RONIN\RONIN AC3 T02 3_2ch 448Kbps DELAY 0ms.ac3 -output F:\RONIN\RONIN_DD5.1_384kbps.ac3 -logfile BeSweet.log ) -ac3enc( -b 384 )
[00:00:00:000] +------- BeSweet -----
[00:00:00:000] | Input : F:\RONIN\RONIN AC3 T02 3_2ch 448Kbps DELAY 0ms.ac3
[00:00:00:000] | Output: F:\RONIN\RONIN_DD5.1_384kbps.ac3
[00:00:00:000] | Floating-Point Process: No
[00:00:00:000] +-------- AZID -------
[00:00:00:000] | Total Gain: 0.0dB, 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] | Source Sample-Rate: 48.0KHz
[00:00:00:000] +------- AC3ENC ------
[00:00:00:000] | Bitrate method : CBR
[00:00:00:000] | AC3 bitrate : 384
[00:00:00:000] | Channels Mode : 5.1
[00:00:00:000] | Error Protection: Yes
[00:00:00:000] +---------------------
[00:44:18.288] W7: Downmix overflow (2: +0.2dB)
[00:48:15.984] W7: Downmix overflow (1: +0dB)
[00:49:01.136] W7: Downmix overflow (2: +0.1dB)
[01:45:27.509] W7: Downmix overflow (1: +0.1dB)
[01:45:27.520] W7: Downmix overflow (1: +0.2dB)
[01:45:27.530] W7: Downmix overflow (1: +0.5dB)
[01:45:27.786] W7: Downmix overflow (1: +0.1dB)
[01:45:27.797] W7: Downmix overflow (1: +0.1dB)
[01:45:30.128] W7: Downmix overflow (1: +0.2dB)
[01:48:31.765] W7: Downmix overflow (1: +0.4dB)
[01:48:41.808] W7: Downmix overflow (1: +0dB)
[01:56:25:408] Conversion Completed !
[01:56:25:408] Actual Avg. Bitrate : 384kbps
[00:35:32:000] <-- Transcoding Duration
Logging ends : 07/10/02 , 11:26:21.
-sundance-
Here's the log:
BeSweet v1.4b13 by DSPguru.
--------------------------
Using azid.dll v1.8 (b825) by Midas (midas@egon.gyaloglo.hu).
Using AC3enc.dll v0.1 by Gerard Lantau & Dg (http://ffmpeg.org).
Logging start : 07/10/02 , 10:50:49.
BeSweet.exe -core( -input F:\RONIN\RONIN AC3 T02 3_2ch 448Kbps DELAY 0ms.ac3 -output F:\RONIN\RONIN_DD5.1_384kbps.ac3 -logfile BeSweet.log ) -ac3enc( -b 384 )
[00:00:00:000] +------- BeSweet -----
[00:00:00:000] | Input : F:\RONIN\RONIN AC3 T02 3_2ch 448Kbps DELAY 0ms.ac3
[00:00:00:000] | Output: F:\RONIN\RONIN_DD5.1_384kbps.ac3
[00:00:00:000] | Floating-Point Process: No
[00:00:00:000] +-------- AZID -------
[00:00:00:000] | Total Gain: 0.0dB, 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] | Source Sample-Rate: 48.0KHz
[00:00:00:000] +------- AC3ENC ------
[00:00:00:000] | Bitrate method : CBR
[00:00:00:000] | AC3 bitrate : 384
[00:00:00:000] | Channels Mode : 5.1
[00:00:00:000] | Error Protection: Yes
[00:00:00:000] +---------------------
[00:44:18.288] W7: Downmix overflow (2: +0.2dB)
[00:48:15.984] W7: Downmix overflow (1: +0dB)
[00:49:01.136] W7: Downmix overflow (2: +0.1dB)
[01:45:27.509] W7: Downmix overflow (1: +0.1dB)
[01:45:27.520] W7: Downmix overflow (1: +0.2dB)
[01:45:27.530] W7: Downmix overflow (1: +0.5dB)
[01:45:27.786] W7: Downmix overflow (1: +0.1dB)
[01:45:27.797] W7: Downmix overflow (1: +0.1dB)
[01:45:30.128] W7: Downmix overflow (1: +0.2dB)
[01:48:31.765] W7: Downmix overflow (1: +0.4dB)
[01:48:41.808] W7: Downmix overflow (1: +0dB)
[01:56:25:408] Conversion Completed !
[01:56:25:408] Actual Avg. Bitrate : 384kbps
[00:35:32:000] <-- Transcoding Duration
Logging ends : 07/10/02 , 11:26:21.
-sundance-