W3C home > Mailing lists > Public > public-webrtc-logs@w3.org > February 2021

Re: [mediacapture-fromelement] Must the alpha channel be preserved, and what about encoding in an alpha-less format? (#30)

From: Andreas Pehrson via GitHub <sysbot+gh@w3.org>
Date: Mon, 01 Feb 2021 12:09:04 +0000
To: public-webrtc-logs@w3.org
Message-ID: <issue_comment.created-770810110-1612181343-sysbot+gh@w3.org>
> My assumption was that WebM/VP8 would handle the transparency.

There's alpha support for webm/vp8, but the alpha channel data is passed in webm's BlockAdditional field, i.e., it's a webm-specific feature.

With WebRTC there's no webm container involved, and AFAIK there's no spec covering rtp/vp8 with alpha.

GitHub Notification of comment by Pehrsons
Please view or discuss this issue at https://github.com/w3c/mediacapture-fromelement/issues/30#issuecomment-770810110 using your GitHub account

Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Monday, 1 February 2021 12:09:06 UTC

This archive was generated by hypermail 2.4.0 : Saturday, 6 May 2023 21:19:53 UTC