Zip file with media exhibiting problem can be found at (13 MB): http://bishops.sytes.net/avisynth_audio_problem/soundDropsOut.zip
using WavSource doesn't work on certain AVI files, not sure why.
The problem is that the sound completely drops out after a second (or so).
All of the movies taken with the Canon PowerShot SD1000 have this same problem. All I'm doing in the avisynth script is WavSource("file"), that's it. When testing it, the sound will be heard, but only for a very short amount of time (about a second), and then only silence is heard for the rest of the file. All AVI Movies taken with my Canon PowerShot A640 do not have this problem, but all movies taken with the PowerShot SD1000 DO have the problem. The movies taken by these cameras are very similar in terms of file size, video codec, audio codec, etc.. but with different audio characteristics.
tested on avisynth 2.5.7, and 2.5.8 alpha 2
In the zip are two avi files, one that works (MVI_0261__ok.AVI), and one that doesnt (MVI_0709__bug.AVI). They can be downloaded here: http://bishops.sytes.net/avisynth_audio_problem/soundDropsOut.zip
SIMILARITIES w/ BOTH FILES:
video: motion JPEG @ 640 x 480
DIFFERENCES between FILES:
audio rate differences :
MVI_0709__bug.AVI : 44100 Hz, 16 bit
MVI_0261__ok.AVI : 11024 Hz, 8 bit
container info differences : (according to GSpot Codec Information Appliance software, http://www.headbands.com/gspot/ [has nothing to do with its name, it is software that shows you information about video files like what video and audio codecs are used, etc.] )
MVI_0709__bug.AVI : OpenDML (AVI v2.0)
MVI_0261__ok.AVI : AVI v1.0
MVI_0709__bug.AVI : Canon PowerShot SD1000 (ultra compact)
MVI_0261__ok.AVI : Canon PowerShot A640 (not sure what this would be classified as... but i know it's much larger than the SD1000 ultra compact)
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