Here is a 4K version of the first trailer for ‘Black Widow’ (2020). Video is 4096×1716 and audio is an unofficial English mix from an official foreign language mix as the source. Download links are below.

Trailer 1 4K – Unofficial Mix – DTS-HD Master Audio 5.1, AC3 5.1
Video: AVC H264 32Mbps
Audio: DTS-HD Master Audio 5.1, AC3 5.1
Image: Scope 4096×1716
Format: MKV

Trailer 1 4K – Unofficial Mix – AC3 5.1
Video: AVC H264 16Mbps
Audio: AC3 5.1
Image: Scope 4096×1716
Format: MP4

Release Date: July 9, 2021 (North America) and Disney+
Director: Cate Shortland
Writers: Ned Benson, Don Heck (comic book & character)
Stars: Scarlett Johansson, Florence Pugh, Robert Downey Jr.
Studio: Walt Disney Pictures / Marvel Studios