Learn more about the IMF format

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 …

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Bringing object-based audio to the production

A few months ago, IRT and BR started a collaboration work within the scope of the EU funded project ORPHEUS to produce content for the project pilots. The aim of this project is to implement a complete end-to-end chain, from capturing to consumption for object-based audio. This technology brings great possibilities and features such as interactivity, …

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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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Android IRT HybridRadio

IRT’s Hybrid Radio App enables LG’s smartphone Stylus 2 DAB+ as a real hybrid radio platform. The app offers hybrid radio functionalities for instant Radio-EPG, Radio-DNS, Slide Shows and Dynamic Labels. Furthermore, functions such as service following for an automated switching between DAB+ and Internet reception and the linking of radio services with accompanying Podcasts …

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Object-based audio rendering in browsers

Object-based audio is a revolutionary approach for creating and deploying interactive, personalized and immersive content. This is possible by representing the audio content as a set of individual assets together with metadata describing their relationships and associations. This allows media objects to be assembled in ground-breaking ways to create new user experiences. Some popular examples …

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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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Discovery, Launch and App-to-App Communication in ARD-Mediathek

In cooperation with ARD-Mediathek we extended the Android version of the VoD portal of the ARD network to demonstrate companion-screen features of  the HbbTV 2.0 specification. Users of can launch a desired video clip on a desired HbbTV 2.0 device and remotely control the playback of the video on the TV from the mobile app. The app makes use of …

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