Question about video (from Laguna Seca)

[JHPGT3]

Having seen Kary's video from Laguna Seca, I thought I'd post one of my 1:36s from the same POC event, but something strange is happening that I can't figure out. The lap in question is a 1:36 according to lap timer, transponder and POC records. When I time the video of this same lap, it comes out to closer to 1:40. However, even worse is the version I downloaded to my computer from the video cam. Its time is 1:10 (it's very impressive!! but highly inaccurate).
Anyone have any ideas as to what's going on here?
Thanks,
John

[gulf911]

Space Time Continuum...


Actually, I have no idea...I haven't seen that before. Excellent 1:10 time though!!

[Bob McLaughlin]

Something to do with "String Theory."

[JHPGT3]

Bob, R U pulling my string again???
Yeah, Dan, now that I see how this works, I think I'll make a video of myself doing WSIR in say, 1:15 !!!
Maybe I'm on to something here. I can show everyone how to reduce their lap times by 20 seconds or so. Just send me your video tapes and let me download to a DVD for you!!

[ajackson]

I'll try for a serious response:

It probably depends on what software you are using, from converting the original video to making the dvd. Perhaps the video you took is at one frame rate and the process of creating a dvd changed the frame rate without adjusting for it.

If I take 10 seconds of video at 24 fps (240 frames) then convert it to another video format at 30 fps my 240 frames is suddenly only 8 seconds of video.

There are probably a ton of variables here since it usually takes a combination of many programs to go from video on a camera to a dvd disc.

[JHPGT3]

I'll try for a serious response:

It probably depends on what software you are using, from converting the original video to making the dvd. Perhaps the video you took is at one frame rate and the process of creating a dvd changed the frame rate without adjusting for it.

If I take 10 seconds of video at 24 fps (240 frames) then convert it to another video format at 30 fps my 240 frames is suddenly only 8 seconds of video.

There are probably a ton of variables here since it usually takes a combination of many programs to go from video on a camera to a dvd disc.

All I did was download from the camera to Windows MovieMaker. R U familiar with that program?
Thanks for the help!!

[kary]

John it is definitely the fps. If I ask my quicktime player to play all frames my laps gets slower. If you convert incorrectly you could make it faster. I would not time any lap from a video.