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WhipHubley
3rd March 2004, 17:47
OK - I'm having an absolute nightmare with an AVI movie that has an AC3 audio track.

AVI2DVD just isn't extracting the full audio - it's only getting about 3/4 of it.

so, I converted the audio myself to MP2 using BeSweet, and then put the track back onto the video using VirtualDubMod. all is fine, and the new AVI file plays perfectly.

but when I now try and load it into AVI2DVD it says that it doesn't support the audio track. eh?

GSpot reports the audio as...

code: 0x0050
name: WAVE_FORMAT_MPEG (MP1/MP2)

...which is fine, right?

oh well, I thought to myself, I'll just encode the video and then add in the MP2 audio when I come to use TMPGEnc DVD Author (which is perfectly happy with the audio track, by the way).

but when I attempt to convert an AVI video (no audio) with AVI2DVD it tries to extract the audio, then encode it, then when it can't find the audio output file barfs!

please tell me I can use AVI2DVD on a video file without any audio, right?

what can I do about this?

thankyou!

Nick
3rd March 2004, 18:29
Most likely a bad frame in your AVI. This is the most common cause of failure of audio extraction.

First thing to try is open your original AVI in vdubmod, select "Direct Stream Copy" from the Video menu and simply resave your AVI under a different name. The new file should convert OK.

If it doesn't we have a plan B.
Demux the AC3 audio in vdubmod and save it to your desktop as Extracted_Audio_1.ac3
Convert your original AVI file in AVI2DVD, but close it down during the BeSweet stage (remember to close BeSweet as well). Now copy your saved file from vdubmod to your default movie output folder. You should be prompted "Replace existing file..." - if not, check your filename exactly matches that of the incompletely extracted file in your output folder and rename the one in Desktop as necessary. Now relaunch DVD2SVCD and use the crash recover feature in the Misc tab to restart from Audio Processing.

Try plan A first though, because if it is a bad frame plan B will end up with video encoding failing at the same spot!

Hope this helps
Nick

WhipHubley
3rd March 2004, 21:25
Originally posted by Nick
Most likely a bad frame in your AVI. This is the most common cause of failure of audio extraction.

First thing to try is open your original AVI in vdubmod, select "Direct Stream Copy" from the Video menu and simply resave your AVI under a different name. The new file should convert OK.

If it doesn't we have a plan B.
Demux the AC3 audio in vdubmod and save it to your desktop as Extracted_Audio_1.ac3
Convert your original AVI file in AVI2DVD, but close it down during the BeSweet stage (remember to close BeSweet as well). Now copy your saved file from vdubmod to your default movie output folder. You should be prompted "Replace existing file..." - if not, check your filename exactly matches that of the incompletely extracted file in your output folder and rename the one in Desktop as necessary. Now relaunch DVD2SVCD and use the crash recover feature in the Misc tab to restart from Audio Processing.

Try plan A first though, because if it is a bad frame plan B will end up with video encoding failing at the same spot!

Hope this helps
Nick

that's bloody ingenious - thanks!

plan A is a no-no unfortunately as VirtualDubMod can't handle muxing AC3 correctly - I find it no better than nandub. the resultant video becomes jerky. it's a real pain in the butt. I have to split the audio and video with VirtualDubMod then mux together with AVIMux GUI.

FYI - I still get the failure to fully extract even after doing this :-(

I'll therefore have a go with plan B. I've got the AC3 track on its own so I'll give it a crack.

thanks again!