losing AC3 audio during conversion

[aramo]

Hi there,

After taking a couple of months off creating svcd on DVD-R discs I started again a few days ago and I've hit an AC3 audio problem. Basically the svcd2dvd log says there is a problem related to audio and halts at the 'resampling 44.1 to 48' stage -- I did tell svcd2dvd NOT to resample but there u have it. Copy of log file at end of message.

Method: I use TMPGEnc to convert a divx file [672*304 with ac3 2 channel] to MPEG elemental video. I use virtdubmod to extract the audio from the AVI, I then use TMPGEnc tools to mux mpv and ac3-audio files. The resulting MPEG file looks and sounds fine in PowerDVD. When using SVCD2DVD ticking the 'resample audio' check box has no effect - the log window always reports
******** Resampling audio from 44.1 KHz to 48 KHz
at which point the program halts.

Before xmas I did produce a couple of svcds from divx files with ac3 audio so I know it can be done.

Log File
Starting SVCD2DVD: v1.51.2.0
Begin time: 16:46:23

******** Ripping BIN images to get mpegs (VCDGear )

Analysing File: E:\assets\lotr2_480x576_ac2.mpg
++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: mpeg user scan data: one or more BCD fields out of range for 'forward_I_offset ': [00:0a.04]

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: unknown private_data_id for private stream 1 seen (0x80)

++ WARN: packet length beyond buffer (pos = 20 + size = 2304 > buflen = 452) -- stream may be truncated or packet length > 2324 bytes!

++ WARN: bad packet at packet #451 (stream byte offset 1048124) -- remaining 452 bytes of stream will be ignored

Error getting mpeg details. (probably due to AC-3 audio)
System.NullReferenceException: Object reference not set to an instance of an object.
at _S_VCD2DVDMPG.210ff09a2516b1a7.b4e369192c57af39(2b c216f3ce925842 a01d771a37e7320b)

Object reference not set to an instance of an object.

at _S_VCD2DVDMPG.210ff09a2516b1a7.b4e369192c57af39(2b c216f3ce925842 a01d771a37e7320b)

-->Processing 1 mpeg files.

############### New MPEG File ###############
File: E:\assets\lotr2_480x576_ac2.mpg
Type: SVCD
Horizontal Res: 480
Standard: PAL
Audio SampleRate: 0

******** Demultipexing original mpg file
bbDMUX - version 1.9, by Brent Beyeler (beyeler@home.com)

speed increases by, Apachez and Christian Vogelgsang

Saving stream 0xE0 into file E:\assets\lotr2_480x576_ac2_DVD.mpv...

File E:\assets\lotr2_480x576_ac2.mpg is an MPEG-2 Program Stream

Summary:

MPEG Packs = 1000816

System headers = 1

Private Stream 1 packets = 144282, total bytes = 330838626

Padding Stream packets = 2, total bytes = 4475

Video stream 0 packets = 856533, total bytes = 1966590130


(Total size: 2218MB, Duration: 00:05:23, Rate(MB/Min): 411.23)

******** Resampling audio from 44.1 KHz to 48 KHz
System.IO.FileNotFoundException: Could not find file "E:\assets\lotr2_480x576_ac2-0.mp2".
File name: "E:\assets\lotr2_480x576_ac2-0.mp2"
at System.IO.__Error.WinIOError(Int32 errorCode, String str)
at System.IO.FileInfo.get_Length()
at _S_VCD2DVDMPG.210ff09a2516b1a7.fbd359f29063c517(2b c216f3ce925842 a01d771a37e7320b)
at _S_VCD2DVDMPG.210ff09a2516b1a7.f5d131c1b9f0edc5()

Could not find file "E:\assets\lotr2_480x576_ac2-0.mp2".

at System.IO.__Error.WinIOError(Int32 errorCode, String str)
at System.IO.FileInfo.get_Length()
at _S_VCD2DVDMPG.210ff09a2516b1a7.fbd359f29063c517(2b c216f3ce925842 a01d771a37e7320b)
at _S_VCD2DVDMPG.210ff09a2516b1a7.f5d131c1b9f0edc5()

[ChrissyBoy]

I have never processed a AC3 mpeg (as source). I will & will report back.