You're looking for information on a specific version of Sony Vegas Pro, a popular video editing software. Here's what I found:
Includes FX masking for blurring or pixelating specific areas (like faces or license plates) and shape-specific masking tools. Performance Fixes: sony vegas pro 12 build 394 64 bit patchkhg top
If you already own a legal license and need a patch/update, only download from official Magix or Vegas Creative Software websites. Never trust third-party "patchkhg" or similar sources. You're looking for information on a specific version
Patch KHG:
Expanded Edit Mode: Temporarily splits the track at an edit point to show adjacent frames, allowing for dynamic trimming while the project is playing. Never trust third-party "patchkhg" or similar sources
Sony Vegas Pro 12 is a professional video editing software developed by Magix (formerly Sony Creative Software). Build 394 is a specific version of the software, and the 64-bit patchKHG refers to a cracked or patched version of the software.
Tips and Tricks