video to frame conversion

i wanted to convert a video to frames... the video was in mp4 format... so i converted it into avi format and did the video to frame conversion... but when i execute the code the following error appears... what shud i do to rectify the error... please do reply...

??? Error using ==> aviread at 76

Unable to locate decompressor to decompress video stream

Error in ==> VideotoFrame at 5

vi=aviread(strcat( vpathname, vfilename ));

Answer 1

[Walter Roberson]

Use aviinfo to determine which compressor was used.

If the compressor was one of the Indeo series, then the file cannot be decompressed on any 64 bit version of MATLAB (the manufacturer of the Indeo compressor refuses to release a 64 bit version of the decompressor.)