Swiss television: conversion to uhd comes step by step – and not 2024

Swiss television: conversion to UHD comes step by step - and not 2024

Actually, the future should start 2021. The Swiss Radio and Television Company (SRG) wants to spread their program in a class of course in Ultra-HD / 4K (UHD). The necessary preparations have been running for a few months. Actually, the broadcast over satellite on UHD should be changed in the next year, threw it last. actually.

Then the SARS COV-2 virus overrolled the world and brought confused the tarpaulin of the SRG. Technical and sales problems disabled the "UHD Ready"-strategy. Thus, the Swiss electronic noise handles reacted skeptical: the handlers signaled, "that the market is not ready yet", Says SRG Corporate Speaker EDI Estermann. Not ready for a new codec.

Codec change

At the beginning of the year, the SRG announced to broadcast its program via satellite with a new video CODEC from 2021. It also went to savings potential. With UHD, the new CODEC HEVC / H is.265 The old standard MPEG4 / H.264. But h.265 can also evaporate the amount of data at full HD (1080p50 with 1920 × 1080 pixels at 50 full images) thanks to more effective compression lane. This offers itself, because in a few years, the SRG does not only want to significantly increase the image quality on the satellite, but also save one of two transponders. And the data rate per station must be reduced.

Also significantly less budget is the quasi-legal institution undelegent. On the one hand, the advertising revenue (currently also clearly because of the Corona crisis), the SRG had promised in the 2017 Year’s referendum to spend less money than the "No billag"-Initiative wanted to abolish the fiscal radio and TV.

To shut down a transponder, the SRG programs will be on the transponder TR 17 to be released in FIG. 2. Quarter 2021 with the programs of the transponder TR 123 deleted, reconfigured and played as so-called MPTS (Multiple Program Transport Stream). This reduces the data rate per channel "Using statistical multiplexing" (SRG) to almost 6 Mbps. Internal tests had proven that the image quality "comparatively good and almost equal" be as usual. So far, a program on satellite had a good 10 MBit / s available. Also on the newly configured MPTS are the 25 SRG radio programs and a hand-drawn HBBTV offer.

Buffet for the broader

"Broader" (WV) of radio and TV programs – such as the cable network operators or IPTV providers – which are earlier the satellite signal, have a new alternative. Since this year, the SRG has ied its two satellite transport streams in addition to cable out of two data centers, where the continuously extend you can remove you via glass fiber and, for example, in the headstations of the cable networks can. The new offer – "Further-widespread playout" (WVPO) is called – take large IPTV and cable TV providers already true.

The new MPTS – still with H.264 encoded and in 720p50 resolution – will also be in the spring of 2021 "on the line" mirrored. In the WVPO, there is a line-bound to further the same offer as the above satellite: the MPTS plus the two previous transport streams (formerly TR 17 and 123). So the SRG can make the change mainly for smaller cable network operators and IPTV providers possible simply, allowing SRG spokesman Niklaus Kuhne. The reorganization of the satellite streams could otherwise cause additional work in the headends of the continuous. Instead, widening could easily switch from the satellite signal (DVB-S2) to the cable supply.

H.265 from 2024

This MPTS is expected to be on H 2024.265 and full HD are switched on both the satellite, as well as on the line.Meanwhile, it is also available: The satellite platform is finally even the last of the new codec H.265 use. And a change of satellite distribution on UHD is starting for the time being in the stars. What is not a big platform anyway, because according to current numbers, only around funf percent of the Swiss look at the SRG program via satellite.

But to safely go to the envisaged changes, it will wait for waiting. Depending on the market development, the changeover on H.265 adapted, says about SRG-CTO Damien Corti opposite our site. "With a planning with several years planning horizon, it is in the nature of the thing that one periodically exerts whether the former expectations are still true or may be revised."

And in these moving times that maybe better. Various rough events with which the SRG wanted to advertise for UHD, fall or fall. Coronabatting already fell out until further notice. Fubball European Championship and Olympic Games about have been postponed. Nonetheless, the SRG plans to be in its UHD strategy until 2024 as possible from many events specials in its own "UHD event channel" radiate, whereby the WV would offer the possibility to take this content in UHD.

Ski World Cup in Full HD

Nevertheless, many viewers and viewers of the SRG broadcasters will soon be able to enjoy high-quality image quality enjoyment. From beginning 2021 Can Swisscom, UPC Co. in the WVPO of the SRG data streams of different quality and transfer rate. For the still intended Alpine Ski World Cup in the Dolomites in February 2021 it should start with Full HD. Accordingly, not only changes in the video CODEC, but also one "Significant improvement in image reproduction, with almost the same needed bandwidth as for HD" (SRG). This meant is an optimization of the color volume, ie the integration of HDR (High Dynamic Range) and BT.2020 (extended color space) and an increase in color depth from 8 to 10 bits.

These improved program signals should then each as a single transport stream (SPTS) in Full HD and H.265 Encoded can be picked up by the continuers. Then each individual of the seven SRG transmitters as a separate data stream via multicast and individual address as well as using CBR (Constant Bitrate) is transmitted to the set-top box (STB) of the viewers. "CBR produces and continues to produce a stream in high quality and steadily consistent bit rate and coding", Erlert Ingmar Schmidt of Swisscom.

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