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 Testcases 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), containerformats (MP4, MPEG-TS) and resolutions (SDTV, HDTV, UHD, 576i, 720p, 1080i, 1080p, 50Hz…)
The testcases are offering an easy to use option for broadcasters, manufacturers, service operators and skilled users to test the playback capabilities of their connected devices under different encoding and transport conditions. With the help oft he UI, all relevant encoding parameters of various renditions from the same source footage can be viewed and compared on a given screen and audio setup. The responsive UI for mobile devices and the PC offers the selection of different webbased mediaplayers (JWplayer, VideoJS, Flowplayer…) to be compared decoding the same streams. For the testcase „IRT Referenzclips 10min“ special testing sequences have been rendered, which facilitate immediate experts viewing of critical criteria like Safe Area, Framerate, Interlaced Mode, Timecode, Overscan, Audio- Channelmapping etc. being applied to the given transmission chain. The presented streams also implement the most current encoding requirements from the german public broadcasters of ARD. Some of the testcases are updated occasionally and my exceed constraints of common decoders, as they are intended to be used for trial annd error, to find out what a given device or broadband-connection can handle or not. So it should be noted that any failed playback attempt may be regarded sinply as test result and not necessarily as a problem of the provided service or application.
If you have any comment to the encodings, questions regarding the application, or if you would like us to assist you in providing testresults and custom encodings, please don’t hesitate to contact us.
We thank all developers of the free software tools which are being used for the preparation of these testcases: GPAC MP4box, VideoLAN x264, ffmpeg, x265, DASH.js, MediaInfo, BITMOVIN und video.js.
With the cooperation of IRT and Romain Bouqueau (GPAQ) a HbbTV 1.5 compliant segmentation for MPEG-DASH in MP4box is now publicly available.