kvm000

4 ms·

1.
by kvm000 4y ago
That's correct - 608/708 is North America only, and UK/Europe could use OP42/47 teletext for simple captions (not whole magazine), and/or DVB (mostly language translation).
2.
by kvm000 4y ago
I was talking about the older PAL-based teletext as well - but you're right, I understand it was different in terms of equipment originally with the full-screen data feeds. Separate from DVB, the old PAL OP42/47 teletext payload g
3.
by kvm000 4y ago
In my experience with a few big broadcasters like Paramount (previously Viacom) and Discovery, for broadcast in Europe/UK the signal they generate often has a mix of Teletext and/or DVB inserted based on the channel since those si
4.
by kvm000 4y ago
There are very strong lobbying groups that push for accessibility in terms of captions (as well as the “DV” described video audio track) but my impression is that their focus is on the quantity of content that’s covered, and the quality (sp
5.
by kvm000 4y ago
Live closed captions (text only) is very common and standard. Usually those are done by an external company listening in to an audio feed, and sending the data back. It used to be done with regular POTS lines and telnet, but now it’s obvi
6.
by kvm000 4y ago
The older “608”[1] system in North America was much simpler but the current “708”[2] standard does support specifying colours and fonts, but in my experience in the industry nobody uses those functions at all and just uses the 708 function
7.
by kvm000 7y ago
The type of system I was referring to is the core within the broadcast facility, rather than extending to the home viewers (which is a separate downstream distribution encoding/mux process). Timing is important for when you switch bet
8.
by kvm000 7y ago
The company I work for is in the SDN space but specifically around large scale uncompressed (SMPTE 2110, 1.5Gbps per HD stream) video broadcast IP infrastructure rather than related to docker containerization. We've been deploying larg
9.
by kvm000 8y ago
Would be nice if there was a more granular option for access to photos which allowed "image only" with no metadata... I assume most people don't realize when they grant photo library access to a cheap filter app that the app
10.
by kvm000 8y ago
We also do full systems purely in software at large scale, such as this one; https://evertz.com/resources/press/Discovery-Cloud-Oct2017.P... ... fully virtualized in AWS, not just for OTT but also full linear cabl
11.
by kvm000 8y ago
Challenges are mostly around keeping lock-step timing across a lot of separate devices in the system at scale (using PTP) for frame-accurate switching, and working through getting the SMPTE-2110 standards completed for interop, but there hu
12.
by kvm000 8y ago
My company is heavily involved in this area... there is a migration underway from baseband ( https://en.wikipedia.org/wiki/Serial_digital_interface ) to fully IP based infrastructure for routing and signal flow. With IP,
13.
by kvm000 9y ago
I'd be very interested in any details of your approach that you could share. I added another comment to this thread with the details of what I've been working on for professional spec documents with markdown and rendering to PDF
14.
by kvm000 9y ago
This is great. I write 100-200 page functional spec documents at a vendor for large scale file based broadcast systems (10-300 linux servers) for a number of customer projects, and have been trying to get away from word since it's slow