File Extension QTCH

File type: Cached File

The QTCH file type is primarily associated with 'Quicktime' by Apple Inc.. This is a cached file but not compressed. If you know the original file format, add the appropriate file extension to the file and it should play in whatever player you use for that format (or in Quicktime). If you don't know the format, see if TrID can identify it for you. iTunes uses this format as well but Apple changed the way these files are handled and they are scrambled in some fashion so you can't just put a new header on the file and get the original media as you could under Quicktime. Also, TrID will not identify the media type; only that this is a Cache file. You could use a packet sniffer to search for the file type of the data stream as it is downloaded but you will still have to manually construct a new header for the file.

When windows gives you an error message saying that it
"Cannot open QTCH files", this means either:

A. You need to identify a program that can open the file
B. Or your registry may be damaged

In both cases it is strongly recommended that you
run a free scan for registry errors.

'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database