UHD – IRT Lab

HDR-Colour Volume – Colour difference metrics in 3D

Birgit Schmidt-Sodingen — Mon, 15 Mar 2021 08:27:48 +0000

With the move from SDR to HDR colours and the corresponding higher luminance range of HDR there seems to be a need to visualise and evaluate certain measurements in 3D as well.

UHD – what it is about!

Birgit Schmidt-Sodingen — Thu, 17 Sep 2020 16:55:22 +0000

Ultra-High Definition – better known as UHD – has been a common term for several years. With it, television viewers benefit from a higher picture quality. But what exactly is behind UHD? We have examined UHD in more detail and with the help of an extensive subjective test we found out which visual factors have ...

UHD? HDR? 4k or 8k? – What’s correct?

Dagmar Driesnack — Wed, 08 Apr 2020 12:08:32 +0000

There is a large confusion about the different TV-systems we are all talking and writing about. Is it UHD? Is it 4k or 8k? Is it with or without High Dynamic Range (HDR)? And what about the colour space? Where is what defined? Is it possible to agree on a common wording? Looking into the ...

HDR-Colour Volume – Colour Space Visualization in 3D

Birgit Schmidt-Sodingen — Wed, 12 Feb 2020 15:43:00 +0000

Ultra-High Definition Television (UHDTV) as it is specified in ITU-R BT.2100 consists of four main features compared to the current legacy HDTV format (High Definition Television): High Resolution (e.g. 2160 lines, progressive only) High Frame Rate (HFR) High Dynamic Range (HDR) Wide Colour Gamut (WCG). Investigations and various demonstrations (e.g. at IFA or IBC 2019 ...

Learn more about the IMF format

Rico Zimmermann — Tue, 04 Jul 2017 11:19:46 +0000

The Interoperable Master Format (IMF) defines a package that includes various files such as MXF files (video, audio and supplemental data) and additional descriptive files. Based on the descriptive information, different versions can now be generated from the included MXF files. Speech and subtitle versions or shortened content versions are just two examples. Ultimately, IMF ...

AV-Portal Streaming Testcases

Martin Schmalohr — Wed, 25 Jan 2017 09:39:26 +0000

IRT opened an extensive repository of differently encoded Audio- and Videostreams for PC, Smartphones, Tablets and HbbTV-Devices. Launch the Testportal http://avtest.irt.de Various test cases are presented in a user interface as progressive download and adaptiv for MPEG-DASH, Apple HLS and Adobe HDS in multiple encodings (H.264, H.265, HE/AAC, E/AC3), container formats (MP4, MPEG-TS) and resolutions ...