The Tiliam Blog

Musing on technologies for video and cinematography

How 8K Measures Up

High Definition is old, 4K is settled in, now it’s the turn of 8K. Asides from professional level cameras, 8K cameras are starting to come to market. One of the most hotly anticipated is the Canon R5 and likely to lead many into the world of 8K video. Is it time to get serious about 8K?

The road to 8K

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A Blog Update

It has been a while since we last posted an article, but good news, the blog is back! We hope to resume posting articles and there is plenty to talk about: from workflows to videos; from video quality issues to the latest high end mirrorless cameras; from action to omnidirectional VR cameras; from 8K UHDTV-2 to H.266 video coding…

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Some Thoughts on ProRes RAW and ProRes RAW HQ

Just before NAB 2018, Apple announced ProRes RAW and ProRes RAW HQ, a new video codec aimed at professionals. When ProRes was originally launched it supported the YCbCr color space with 4:2:2 and 4:4:4:4 chrominance subsampling. ProRes is popular as an intermediate codec for transcoding video from the camera for editing or as a mezzanine codec for storing high quality edited video before transcoding to a delivery format. The 4:2:2 version is preferable for general purpose compression at high quality and 4:4:4:4 for applications such as chromakey or when on screen text and graphics will be added.

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