Speaker
Description
Alpha Channel is an essential tool in modern video workflows, enabling transparency and visual effects as required in telepresence and Virtual Reality applications, or modern websites. The Versatile Video Coding (VVC/H.266) standard supports Alpha Channel natively by encoding transparency data as an independent auxiliary layer signaled via SDI and ACI SEI messages (ITU H.274).
This presentation details the work to integrate this standard-compliant VVC/H.266 alpha channel support into VVenc and GStreamer for encoding and decoding streams with transparencies.
The presentation will cover the following topics:
- Introduction to Alpha Channel
- Alpha Channel support in video codecs
- Alpha Channel decoding support in GStreamer with GstAlphaDecodeBin
- VVC/H.266 Alpha Channel encoding with VVenc
- VVC/H.266 Alpha Channel decoding with GStreamer
- Encoding and decoding demo
Speaker Bio
Andoni Morales Alastruey has been a GStreamer contributor since 2009. He works for Fluendo as head of innovation, developing new products around desktop virtualization, video codecs and AI-based computer vision. He is the founder of LongoMatch, a sports video analysis software that got him hooked into GStreamer.
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