A2Z Video Tools
Simple Video Tools for Your Own & Authorized Content
A2Z Video Tools provides simple utilities for managing, converting and working with video content you own or are authorized to use.
Only use A2Z Video Tools with content you own, content in the public domain, or content you have permission to download, save, convert or use. Users are responsible for complying with applicable laws and the terms of the source platform.
All the tools
No account, no watermark, nothing to install. The icons are there so you can find a tool at a glance.
Black Hole A2Z for Android and Windows
Black Hole A2Z is a media utility for managing and working with your own or authorized video content, built for a phone and for a desktop. It is separate software from this website, and the website works fully without it.
Version 1.4.0. Distributed directly by the developer rather than through an app store.
Version 1.1.0. Distributed directly by the developer rather than through an app store.
Reading on video
How formats, bitrates and codecs actually behave, written for people who have to make a decision rather than pass an exam.
Exporting
What Bitrate Should I Export At?
There is no single right number, but there is a right way to arrive at one. It depends on resolution, frame rate, how much movement is in the shot, and where the file is going.
2 min read
Working with Audio
Turning a Script into a Voiceover
Synthetic speech has become good enough for narration, and what separates a usable result from an obviously robotic one is mostly how the script is written.
2 min read
Working with YouTube
YouTube Thumbnail Size, and What Actually Matters
1280 x 720 and under 2 MB are the requirements. The thing that decides whether a thumbnail works is that it is usually seen at a fraction of that size.
2 min read
Working with YouTube
How to Get a Transcript from a YouTube Video
Most YouTube videos already carry captions, generated or uploaded, and the text can be pulled out as plain text or as timed subtitles. Here is what is available and what it is worth.
2 min read
What this site is for
Most questions about video come down to arithmetic that nobody wants to do by hand. How big will this be? What bitrate fits under the limit? What height keeps the shape if the width changes? The tools here answer those, and each one explains the working rather than just producing a number, because the explanation is what stops you needing the tool next time.
There is a deliberate boundary. These tools work on content you own, content in the public domain, or content you have permission to use. Nothing here is designed to get around a platform's restrictions, a paywall or a technical protection measure, and nothing here will help with that. The copyright policy sets out where the line sits and why.