Error message in VirtualDub

[eyma]

I want to open an avi file with VitualDub V. 1.5.9(build 18121 release) in order to separate audio and I receipt a message saying: “No audio decompressor could be found to decompress the source audio format”.
What can I do to solve this problem?

[ormonde]

"“No audio decompressor could be found to decompress the source audio format”.
What can I do to solve this problem?"

First, you need to find out with type of audio stream is in the file. In Virtual Dub, go to "File" > "File Information" and a dialog box will come up with both video and audio information. Post everything there is in "Both" sections. My guess is, you probably need some type of audio codec.

[eyma]

I send you all the information I have with VirtualDub and Avicheck.

Video streams

Frame size, fps (us per frame) 576x304, 25.000 fps (40000 ms)
Length 104180 frames (1:09:27.20)
Decompressor DivX 5.1.1 Codec
Number of key frames 2896
Min/avg/max/total key frame size 1926/20764/52116 (58274 K)
Min/avg/max/total delta frame size 8/4645/32648 (459462 K)
Data rate 1019 Kbps (0.47% overhead)

Audio streams

Sampling Rate 48.000 Hz
Channels 5 (Stereo)
Sample precision N/A
Compression Unknown (Tag 2000)
Layout 43 chunks (0.50 s preload)
Length 200025600 samples (1:09:27.20)
Min/avg/max/total frame size 1920/2433/24000 (103 K)
Data rate 384 Kbps (0.98% overhead)

File: Mivideo-1.avi
Total Streams: 2
Running Time: 1:09:27
Index Chunk: Yes
Interleaved: Yes
Max Bytes Per Sec: 0
AUDIO: 0 - AC3 (0x2000)
Average Bitrate Per Sec: 384 kb/s
Samples Rate: 48000 Hz
Channels: 5
Bits Per Sample: 0
SuggestedBufferSize: 24000
Sample Size: 1

VIDEO: DX50
B-VOP: Yes
S(GMC)-VOP: No
QuarterPixel: No
Frame Size: 576 x 304
Frames Rate: 25.000
Color Depth: 24
Total Frames: 104180
SuggestedBufferSize: 52116
Elapsed Time 00:00

I hope it will be enough to help solve the problem.

[hacker_on_fire]

The audio seems to be in ac3 thus the need for 'Ac3 Filter':

http://ac3filter.sourceforge.net/

Download, install and everything should be okay.

[eyma]

Thank you hacker_on_fire, I do this and all is Ok

[hacker_on_fire]

"I do this and all is Ok"

It should be, as 'Tag 2000' in the info you provided mean it's audio is in ac3 format.

"Thank you hacker_on_fire"

No problem. It's my pleasure.

[skatana]

Hmm weird,

I have the exact same problem
also "no audio compressor could be found"

So i read this thread and saw that i too had: unknown (TAG 2000)
as the audio compression of my avi file.
So i downloaded the AC3-filter that you where so kind to link.
but it didnt solve the problem

any other tips perhaps?