IRT uses GPAC MP4Box to generate a wide set of streams
IRT is the primary research institute for public-broadcasting organisations in Germany, Austria and Switzerland.
The IRT teams have used GPAC and other open-source tools such as x264, FFmpeg, x265, dash.js, video.js to generate an extensive repository of differently encoded Audio- and Videostreams for PC, Smartphones, Tablets and HbbTV-Devices.
The streams target:
- Computers (desktop and laptops)
- Smartphones and tablets
The generated adaptive streaming formats are:
- Apple HLS
- Adobe HDS
- Video: H.264, H.265
- Audio:HE/AAC, E/AC3
Resolutions range from:
- SDTV to UHD
- progressive or interlaced
- high framereate (>= 50Hz)
We encourage this kind of initiative. Interoperability can only be achieved with test content and appropriate tools. In 2013 we wrote an article about HbbTV, test streams and conformance tools.