Broadcast Focus podcast | Gratis online luisteren

Beschikbare afleveringen

5 van 32

Ep 32: Reviving Ceefax: How To Build Your Own Teletext System. On air 24x7 on the web and YouTube!
Nathan Dane, the mastermind behind https://NathanMediaServices.co.uk, helps us discover the inner workings and historical significance of the BBC's iconic Ceefax service. Nathan shares his journey from piecing together teletext data using a Raspberry Pi to creating a fully functional teletext website that mirrors the classic Ceefax pages. With a mix of old-school technology and modern coding, Nathan explains how he recreates the teletext experience, including up-to-date news, sports scores, TV listings, and more. Learn about the challenges of maintaining teletext formats, the intricacies of data feeds, and the community efforts to preserve teletext history. This episode offers a fascinating glimpse into – for the UK – a bygone era brought back to life.
--------
35:29
Ep 31: 'Secret' Uses for Teletext plus how Subtitles & the EPG Works by a Retired BBC Engineer #TechTalk
Behind the Scenes of Teletext: Subtitles, Data Broadcasting, and MoreFormer BBC engineer Peter Wietzel joins Russell Trafford-Jones in this episode of Broadcast Focus as they delve into the intricacies of Teletext covering how subtitles work, why the BBC tansmission actually used two simultaneous subtitle transitions, and the many uses of carrying arbitrary data over Teletex were were the hidden heros! Peter finishes by talking about how the implementation was one of the first cross industry examples of collaboration in creating standards and talks about MHEG which replaced Teletext. Whether you're a technical enthusiast or just curious about broadcasting history, this should be good!00:00 Welcome & Intro02:30 Understanding Subtitles in Teletext04:11 Technical Details of Subtitles Transmission10:42 Subtitle Demo11:10 Inserting Live and Recorded Subtitles15:57 Dealing with Lack of Subtitles & Policing18:35 Using 'Subtitles' to Help Deal with AFD/VI/Aspect Ratio19:34 A Second Simultaneous Subtitle System for Internal Use21:27 Inserting Subtitles in the BBC Regions22:50 Teletext in SDI - SDI Bridge25:25 Second Generation SDI Bridge27:40 Quick look at Presfax29:06 Databroadcasting – Sending Generic Data31:40 Uses of Databroadcaster 34:00 Dairy Farming36:00 Carrying audio over Teletext40:40 Presfax Details44:36 Controling Overlay Insertion at Transmitters46:11 Ceefax In Vision49:25 Teletext Standards50:58 Collaboration and Standardisation in the 90s54:58 Technical Enhancements and Memory Management01:02:56 The Rise of Electronic Programme Guides01:08:19 PDC - Recording Programmes01:20:09 The Transition to Digital Broadcasting01:23:00 The End of Teletext and Its Legacy01:28:00 Reflections and Closing RemarksWith thanks to https://www.nathanmediaservices.co.uk/ceefax/ for the demos and by extension ZXGuesser
--------
1:30:58
Ep 30: Ex BBC Engineer Returns to Tell More About Teletext #TechTalk #Deepdive – Part II
Peter Weizel spent many years in the BBC working on Teletext and even wrote part of the standards so who better to continue guiding us on our journey into the first digital broadcasting on TV. Teletext is a pioneering pre-internet information distribution system. In part one, we heard about the inception of Ceefax at the BBC and the some of the inner workings of Teletext, its page and data structures, and its significant role in modern broadcasting technology. Part One: https://youtu.be/tbDB8FCOaV4In part 2, we go into detail about data broadcasting, government interference, dynamic allocation of packets, using teletext for BBC internal staff information, regionalising CEEFAX00:00 Welcome and Introduction01:42 Ceefax Demo02:11 Teletext Services and Features03:03 Finding ways to apportion the VBI05:11 Government Wants To Sell Teletext Space07:15 Dynamic Allocation and Optimisation11:18 Better Data Multiplexing26:55 Test Equipment31:05 Early Ceefax Architecture33:23 Ceefax in the regions39:49 BBC FAX service in Europe (WSTV)45:28 Telfax – Ceefax for BBC Staff49:04 Conclusion and Next Episode TeaserMany thanks to Nathan Dane for bringing Teletext to the internet: https://www.nathanmediaservices.co.ukShout out to @ZXGuesser for the online interactive teletext viewer.Wikipedia's summary of Ceefax: https://en.wikipedia.org/wiki/CeefaxWikipedia's summary of Teleteix: https://en.wikipedia.org/wiki/Teletext
--------
50:14
Ep 29: Georgiana Verdonk on boosting your career by finding mentors on the way
Rise Mentor and Fractional CMO Georgiana Verdonk explains all aspects of mentoring, showing it's great for all stages of your career! We look at why it makes sense, why companies should offer it, and how to get your own mentor when no one else is helping you. Rise Women in Broadcast: https://risewib.com Broadcast Academy: https://www.broadcastacademy.net Women in Streaming Media: https://www.womeninstreamingmedia.org
--------
38:47
Ep 28: Ex BBC Engineer explains how Teletext works! #TechTalk Deep Dive.
Peter Weizel spent many years in the BBC working on Teletext and even wrote part of the standards so we go on a journey into the first digital broadcasting on TV. Teletext is a pioneering pre-internet information distribution system. Learn about its inception at the BBC and its evolution in broadcasting digitally across the UK and Europe since the 1970s. We look at the inner workings of Teletext, its page and data structures, and its significant role in modern broadcasting technology.00:00 Introduction and Channel Overview00:53 History and Evolution of Teletext02:30 Teletext Functionality and Features07:30 Technical Details of Teletext Transmission21:49 Teletext Data Broadcasting and Equipment34:11 Modern Applications and Preservation EffortsMany thanks to Nathan Dane for bringing Teletext to the internet: https://www.nathanmediaservices.co.uk
--------
36:32