You're looking for the text related to the patch for Sony Vegas Pro 14.0 Build 161. Here's what I found:

: Resolved issues causing inconsistent stream lengths for certain MP4 clips and truncated files when rendering from FLAC sources.

The shift from "Sony" to "MAGIX" naming broke many legacy scripts. Users often had to update or manually edit scripts to replace "Sony" references with "VEGAS". Verdict: Pros & Cons

Released shortly after to fix a memory leak that caused crashes when using multiple AVCHD and HDV files.

: MKV is not natively well-supported; users often need to convert files to MP4 using tools like VideoProc Converter before importing.

Vegas Pro 14.0 Build 161 was released on September 20, 2016 , marking a major transition as the first version developed under following its acquisition of the software from Sony. VEGAS Community New Key Features Smart Upscaling & Zooming

: Enhanced support for AJA and Blackmagic Design hardware, alongside improved clip support for RED ONE, EPIC, SCARLET, and WEAPON cameras. Critical Bug Fixes in Build 161

: Addressed an issue where one frame could appear black in stereoscopic 3D mode when GPU acceleration was enabled.

Utilises GPU acceleration to upscale HD footage to 4K/UHD while preserving edge integrity and detail.

Before discussing the "patch," let’s dissect the version.

If your preview window is flickering, go to Options > Preferences > Video and turn off "GPU acceleration of video processing."

Fixed OpenCL and NVENC rendering glitches that previously caused sudden freezes mid-render. Codec and Format Compatibility Improved decoding performance for HEVC/H.265 files.