The main difference between 2.0 and 2.0.1 is a QuickTime for Windows 1.x/2.0 installation issue that has been fixed. Other issues corrected are:
1) Resource leak in sample codec component fixed by extern "C"
2) Resource leaks in components based on sample code in (1)
3) Data handler performance enhancements
4) Installer changes for ATI Mach 64 compatibility
5) Installer now removes [video] optimize= key, to ensure that auto-video speed determination in QTW is re-enabled for QTW 2.0
6) Updated memory utilization for enhanced performance during rate conversion/audio decompression
7) Updated all components to peacefully coexist with previous versions of the quicktime binaries. (Issue resolved for Premiere 1.x, and some CD-ROM titles which run QTW binaries from the CD-ROM instead of from the default QTW binary)
8) Component manager now supports two entry points to identify component:
- THNGIDENTIFY
- THNGIDENTIFY2
- This allows QTW 1.x to safely ignore newer components which use QTW 2.0 specific features. (see item 7)
9) Byte-swap public macros now use 2-byte XCHG instead of 3-byte ROL instruction
10) New support for casting an HGLOBAL handle to a PicHandle on all API calls which take a PicHandle as a parameter. This allows a programmer to read from a file into a Global memory object, then have QTW interpret the contents of memory as a PICT.
11) Correct the usage of CLUTID = -1 to be the same as on Macintosh.
12) Added preference to QTW.INI to allow user to indicate that their windows sound driver is lying about its ability to perform volume control.
13) Added preference to QTW.INI to allow QTW to reset the sound hardware everytime the audio output channel is opened.
14) Improved audio sync under low memory conditions.
15) Improved audio decompression performance.
16) NewMovieFromDataFork parsing improved when there are multiple 'moov' resources in the data fork.
17) Switching between multiple sound tracks is now supported at runtime under application control.
18) Prevent various malformed JPEG images from causing GPF.
19) Corrected editlist processing when media timescale was different from movie timescale.
20) Bypass more GDI bugs related to SetBitmapBits.