Category Archives: AV Streaming

Towards 5G Broadcasting – A Showcase around European Championships 2018

The European Championships 2018 provided an opportunity for the IRT in collaboration with the EBU to show how audiovisual content produced in the state-of-the-art formats both live and on-demand can be distributed to large audiences in the 5G environment. As part of the 5G-Xcast project, several trials were conducted during the week of the event

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Argos | Measuring the video stream quality

Users of media platforms are used to watch high quality video content over the internet, since many media platforms emerged that deliver high quality video content anytime, anywhere and on any device with intuitive applications. These platforms, like YouTube, Netlifx or Facebook have set the standard of video streaming very high. And this high standard

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IRT Teststreams on YouTube

This is a quick test, if the YouTube Cloud Transcoder supports MXF-Contribution Quality for high quality uploads as it is used within ARD and ZDF. For a broadcaster it can be desirable to upload their productions in high quality to cloud-based video-portals like YouTube without any further recompression to maintain quality and save processing costs.

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CMAF Livestreams with Subtitles and Audio Description

The Common Media Application Format (CMAF) aims at unifying the two currently leading adaptive streaming standards: MPEG-DASH and Apple’s HLS. The sample live streams presented here, demonstrate the potential benefit of CMAF for future OTT IP services. With CMAF, both HLS playlists and DASH manifests are allowed to reference the same fragmented MP4 (fMP4) chunks,

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AV-Portal Streaming Testcases

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

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