This indicates a high-definition resolution (1280x720 pixels) ripped from a digital high-definition source. While better than a "CAM" (theater recording), it is lower quality than a 1080p Blu-ray or 4K release.
The file you're referring to, "," is a pirated version of the Marvel film distributed through unauthorized channels like Telegram. Movie Summary
A flexible video container format that can hold multiple audio and subtitle tracks. Where to Watch Legally
The kingdom faces a new threat from the hidden undersea nation of Talokan, led by Namor (Tenoch Huerta Mejía).
This is a tag for a specific pirated content distribution channel on Telegram .