I recorded movie accidently in time lapse mode which is playing it in fast forward mode. I need to convert it back to normal mode. Is there a way to do this? I am using Cannon SD1100

Check your camera settings in movie mode for the correct settings for time lapse, normal, slow motion and fast motion. A slow recording memory card will not produce your problem but will take longer to save the file. If you shot the movie in PAL and played it on an NTSC TV, the picture would be in black and white with no sound and vice versa. ALWAYS format the memory card in the camera, never on a PC

You need to change your video settings. You have it set for time lapse. Turn your camera to the video mode on the top of the camera and then turn the dial on the back of the camera to the size of video you desire.

Oh my, sounds like you accidentally recorded in "Time Lapse" mode (one of the specialized video features of your camera). Unfortunately, there's no way to convert the already taken video back to "Standard" video with sound, I'm sorry. However, you'll obviously need to set your camera back to standard mode for future videos. Press the "Function" button while in video mode. Then press left/right to select "Standard" video.

Are you sure you have not recorded the video in time-lapse mode? Could be worth checking. Once in the Video setting, you can use the thumb ring to change video mode - one of these modes is normal and one is time lapse (there are five or six others).

i have good and bad news for you guys. the bad news is that you'll never beable to see those videos in the normal time frame again. but the good news is that there's nothing wrong with your camera. try turning the sd1100 on again in video mode. then press on the function/set button. now just set the capture mode back to standard. you've had it in time lapse. if this doesnt help, then iono.... lol good luck!

This is a really simple problem and easy to solve.  Unfortunately the videos you've recorded cannot be changed back because they have been recorded in Time Lapse mode.  
With the camera switched on in Video Mode turn the control dial on the back (this is the dial to the right of the LCD screen).  This will change the settings from TIME LAPSE to STANDARD.  There are actually 6 different modes but the best one for normal videos is STANDARD.  There is a HIGH RESOLUTION setting,  however these record fewer frames per second (fps) so whilst the quality is better per frame,  there are half the amount of fps so the the movie will look at bit jerky.
It's really easy to accidentally twist the dial when holding the camera,  so always check the icon in the top right of the LCD before recording to make sure its just a yellow camera in a yellow square.  
This should be problem solved for all future recordings.

This is a really simple problem and easy to solve.  Unfortunately the videos you've recorded cannot be changed back because they have been recorded in Time Lapse mode.  
With the camera switched on in Video Mode turn the control dial on the back (this is the dial to the right of the LCD screen).  This will change the settings from TIME LAPSE to STANDARD.  There are actually 6 different modes but the best one for normal videos is STANDARD.  There is a HIGH RESOLUTION setting,  however these record fewer frames per second (fps) so whilst the quality is better per frame,  there are half the amount of fps so the the movie will look at bit jerky.
It's really easy to accidentally twist the dial when holding the camera,  so always check the icon in the top right of the LCD before recording to make sure its just a yellow camera in a yellow square.  
This should be problem solved for all future recording.

U will have to edit the movie on a video editor ..... Ulead video studio is a good one ....... get ur video on it ...reduce playback speed according to choice and create a new File

This is a really simple problem and easy to solve.  Unfortunately the videos you've recorded cannot be changed back because they have been recorded in Time Lapse mode.  
With the camera switched on in Video Mode turn the control dial on the back (this is the dial to the right of the LCD screen).  This will change the settings from TIME LAPSE to STANDARD.  There are actually 6 different modes but the best one for normal videos is STANDARD.  There is a HIGH RESOLUTION setting,  however these record fewer frames per second (fps) so whilst the quality is better per frame,  there are half the amount of fps so the the movie will look at bit jerky.
It's really easy to accidentally twist the dial when holding the camera,  so always check the icon in the top right of the LCD before recording to make sure its just a yellow camera in a yellow square.  
This should be problem solved for future recording.

Make sure you are shooting your movies in "Standard" mode. If you have the mode set to something else, especially "Time Lapse", the playback may not match 'natural' motion.

In any case, you can control the speed of the playback. When you first enter the movie playback mode, there should be a movie control bar along the bottom of the LCD. Instead of the "Play" button, select the "Slow Motion Playback" button (single arrow with single bar next to the normal Play button), and control the speed with the left or right arrows on the multi-controller.