I can think of many other good use cases for games, interactive videos and animations. It’s now possible to achieve green screen effects just using CSS and a video. Videos on the web with an alpha channel open up many possibilities. Safari now even supports video inside the img tag. Think full page background videos, cinemagraphs, explainer graphics and so on. ![]() Video is used everywhere, and it’s slowly becoming part of the fabric of web design. We’re well into the second decade of widespread video on the web. You can use this library directly in Finder, on the command line with avconvert or via Compressor. HEVC encoding uses the AVFoundation library – updated in 2019 with alpha channel support. Update June ’20: HEVC encoding is supported in Catalina directly. ![]() Tuesday 15 October, 2019 (updated: Thursday 4 June, 2020) ![]() HEVC encoding on macOS Catalina now supports encoding an alpha channel, enabling many creative options on the web and inside apps. How to make HEVC, H265 and VP9 videos with an alpha channel for the web | Kit Cross Kit Cross Home About How to make HEVC, H265 and VP9 videos with an alpha channel for the web
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