Bug 257956 - MediaStream from canvas (captureStream) cannot be rendered into a different canvas
Summary: MediaStream from canvas (captureStream) cannot be rendered into a different c...
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Canvas (show other bugs)
Version: Safari 16
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: youenn fablet
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2023-06-12 08:02 PDT by Simon Leber
Modified: 2023-06-13 11:40 PDT (History)
8 users (show)

See Also:

Attachments
Reproduction (1.35 KB, text/html)
2023-06-12 08:40 PDT, Sébastien Roch 		no flags Details
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Description Simon Leber 2023-06-12 08:02:40 PDT 
The Mediastream returned from a canvas captureStream call can not be used to be rendered into another canvas using drawImage (2d context) or createImageBitmap/transferFromImageBitmap (bitmaprenderer context)
The following CodePen shows the problem in a short example.

https://codepen.io/sleb91/pen/bGQdPxq

I have tested on Safari on Mac (Version 16.5 (18615.2.9.11.4)) and latest IOS Safari (16.5)
Comment 1 Sébastien Roch 2023-06-12 08:40:42 PDT 
Created attachment 466670 [details]
Reproduction

Attached reproduction as simple HTML file.
Comment 2 Radar WebKit Bug Importer 2023-06-13 01:33:37 PDT 
<rdar://problem/110696945>
Comment 3 youenn fablet 2023-06-13 01:36:19 PDT 
Pull request: https://github.com/WebKit/WebKit/pull/14910
Comment 4 EWS 2023-06-13 11:40:31 PDT 
Committed 265128@main (e7326a948d62): <https://commits.webkit.org/265128@main>

Reviewed commits have been landed. Closing PR #14910 and removing active labels.