I download youtube videos and try to convert it to mp4 so Windows Media Player can play those files but all i get is this file is unsupported.
I cannot install Third Party codecs such as Klite since it has become a spyware installing toolbar and crashing my explorer.exe.
and installing Klite did not solve the above.
and one more intresting thing i seen is i can import flv files without problems if its only freshly downloaded flv from youtube if the flv files are old say 3 or 4 days older AE will not recognize file format.(strange)
FLV files are container files that can contain video encoded with different codecs. After Effects can import FLV files that contain video encoded with the On2 VP6 codec, but not with the Sorenson Spark codec. Which codec is used in the videos that you're trying to import?
Sounds like something is seriously wrong with your system and corrupting specific file types....