sindresorhus/Gifski

Support showing video transparency in the editor

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#237 opened on Mar 14, 2021

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enhancementhelp wanted

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Description

Currently, the video player in the editor just shows a black background for videos with an alpha channel. I think this is a limitation in AVPlayerView, but if anyone knows a way to make it work, let me know. According to this session from WWDC 2019, AVPlayer should support videos with alpha channel.

Here's a sample video: puppets_with_alpha_hevc.mov.zip

Feedback Assistant report: https://github.com/feedback-assistant/reports/issues/197

Contributor guide

Research direction
Investigate AVPlayer's support for alpha channel video playback, possibly using AVPlayerLayer with custom compositing or Metal shaders. Check WWDC 2019 session 506 for details.
Tech stack
swift
Domain
desktopaudio video rtc
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
SwiftAVFoundation
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50