Audio Problem

[Sakuya]

I downloaded an AVI file and I wanted to play it in VDub. It has no VBR sound and I checked the file information and here it is:

23.976fps
Decompressor: XviD MPEG-4 Codec
Audio Sampling Rate: 48000Hz
Channels: 2 (Stereo)
Sample precision: 0-bit
Compression: Unknown (tag 2000)
# of frames: 16811
Preload Skew: 12000 samples (0.25s)

When I try to play the video, I get this following error message:

The requested audio compression is not compatible with the input format. Check that the sampling rate and channel count of the input match those of the requested format.

What does that mean? Would I encounter problems if I were to convert the AVI file into MPG to put on a VCD? It played fine in mplayer2.exe; audio AND video.

[ZippyP.]

The sound in your avi is in AC3 format. Get Gspot from the Tools section, it will test your file, tell you the required audio and video codecs and tell you if you have them installed or not. You will need the AC3 codec installed in order to convert.

[Sakuya]

Are you sure it's AC3? I just did a test convert and the audio worked fine...

Edit: I installed Gspot, and for the audio codec its says:
ac3 (0x2000) Dolby Laboratories, Inc.

Under it it says "Codec is installed". So now what?

[ZippyP.]

Well, you've got the codec. You should extract the sound into a wav file and use the wav file as the audio source for your conversion. There are several ways to do that but the simplest I think is to use Goldwave, here's a guide.

Good luck!

[dap123]

I am receiving the following error after I attempt to render the avi file I downloaded through Gspot. The video is fine, but there is no sound. Can anybody help me?

DirectShow partially succeeded to play file. The actual text of the error or warning is:

0x00040242: VFW_S_PARTIAL_RENDER - Some of the streams in this movie are in an unsupported format.

The following combination of filters were used:

{C:\My Shared Folder\D..-..DVDRiP.XviD-DEiTY.avi} (Video Source)
{AVI Splitter} (Video Splitter)
{3ivx D4 Video Decoder} (Video Decoder)
{Video Renderer} (Video Renderer)

[Sakuya]

Thanks! What is AC3 audio? Why is it different? Can't I put that AC3 onto VCD?

Edit: I did a little searching around here and I found a tutorial on how to convert the AC3 audio to WAV using VDub here:

https://www.videohelp.com/virtualdubaudio.htm

And it says if in VDub, the audio says it has 5 channels then it is AC3. But mines says only 2 channels. Also, I tried the 2-channel tutorial there and followed step by step. When I went to save the WAV, it won't let me and showed me the same error message as before.

[ZippyP.]

AC3 is Dolby digital surround sound, it can have five channels but also may contain only two. VCD only contains mpeg2 (mp2) sound but DVD frequently has AC3. I suggest you give Goldwave a try for wav extraction.

[Sakuya]

Ok, extracted the WAV using Goldwave. But Goldwave is only a trial! I guess it will do. Thanks! And I'm curious. Even if I didn't extract the audio into a WAV file and converted using TMPGEnc and then burn to VCD, what would happen to the audio?

[ZippyP.]

TMPGenc can do the audio directly from the avi but it can cause sync problems sometimes, it's usually recommended to extract the wav file first.

[Sakuya]

Well, you've got the codec. You should extract the sound into a wav file and use the wav file as the audio source for your conversion. There are several ways to do that but the simplest I think is to use Goldwave, here's a guide.

Good luck!

Ok I followed the guide and converted it. It played well on the computer. But after I burned it to VCD, the audio kept on halting every few seconds! Why is this? The video was fine and the audio was not out of sync, just halting. How can I fix this? Is there a way to fix this without reconverting the video too!? Please help!

Edit: If video has anything to do with it, VDub says the source AVI file was 23.976fps. So I converted it to 23.976fps, same thing. The AC3 audio was originally 48000Hz so I resampled it using Goldwave to 44100Hz. This has happened in the past too and I cannot fix this!

[secretagent]

you saved your audio at 48000 vcd is 44100 you need to resample the audio in goldwave then save it (soory just saw your edit)

[tim]

i am getting the same problem as dap123 how do you fix this