Earlier today I was watching some deer and squirrels feeding together in the yard. It's been ages since I pushed the video button on my camera. But now I thought I might catch something entertaining. Trouble is, when I reviewed the video tonight I noticed that the speed of the playback was WAY off. The audio recorded at the right rate during playback, I think. It's just the TV playing in the background, shot video through a window, so I can't tell from actions in the video of they are the same rate, but the speed of the animals was going too fast. It's like they were moving at about 1.3x to 1.5x times normal speed.
My camera settings when taking the video were for 640x480, 30fps
I put the video through Virtualdub to change the frame-rate to various speeds. 15 fps was too slow, 23fps was a bit too fast, 20 fps was just about right.
I'm using an S3IS, with CHDK build 0.9.3-0690
I have my CHDK video options set to:
Video Mode: Bitrate
Video Bitrate: 0.75x
Video Quality: 45
Fast Video Control: ON
Video Quality Control: ON
Show Time: BOTH
Refresh Rate: 3 sec
Audio had been left set to 11.025kHz long ago for some reason. It would be nice to see that displayed in the viewfinder so I would know to change it.
Is there some bug in CHDK in this particular build with this camera model that is causing this? Can anyone duplicate this? If so, can this be exploited to give new frame-rates to everyone?
