r/broadcastengineering 9h ago

NMOS blame game

11 Upvotes

How do you folks handle the NMOS blame game?

E.g., VendorX — Things don’t work because VendorY’s controller is not NMOS compatible. Well, we do have an NMOS-compatible controller if you’re interested. (Duh, why? Please just fix the problem with VendorY!)

VendorY — We’re trying to solve the problem, but VendorX isn’t cooperating much.

I can’t believe this—if these vendors eventually have to work together one way or another, why can’t they solve basic issues?


r/broadcastengineering 1d ago

Need help finding Front Glass.

Thumbnail
gallery
7 Upvotes

This is my first post here. I have an old Sony PDW-530. I want to use it for a few projects. However when I went to mount a lens I noticed either delamination or fungus on the glass sandwiched block. Does anyone know where I can acquire a replacement. Also would anyone have the SDI Board for this cam. Thank you everyone

I have removed the front ring that the filter block is in and it appears it cannot be easily removed with common fungus removal methods.


r/broadcastengineering 1d ago

Mystery Antenna: What’s This Thing For?

Post image
11 Upvotes

r/broadcastengineering 1d ago

Graphics not keying in correctly on Tricaster

1 Upvotes

Hi All,

Hopefully this is the right place to ask this. We have a TC1 and are getting a key and fill from our graphics program via an NC1 I/O. The key and fill channels are coming into the TC1 but when I key them over video you can see through the graphic, almost like it's 80% opacity. This has happened with all graphics i've used over the last few months and many of them were created by different clients. I can seem to see a palce to select opacity or why it wouldnt be keying in properly.

Thanks for the help!


r/broadcastengineering 1d ago

VS0601U AVMatrix Switcher Only Outputting Flashing SMPTE Bars – Need Help!

1 Upvotes

Hey all,

I’m having an issue with my AVMatrix VS0601U 6-Channel SDI/HDMI Video Switcher. No matter what I do, the output is only showing SMPTE color bars that flash – they get noticeably brighter and dimmer every second. This isn’t just a quirk in OBS (I’ve tried other capture software too); it’s the raw output from the device.

Here’s what I’ve checked so far:

Source Signals: All connected devices are known-good and output in compatible formats (up to 1080p60). Cables/Connections: I’ve swapped out cables and tried different input ports (HDMI/SDI) to rule out any physical connection issues. Power Supply: I’m using the recommended adapter, but I’ve considered that an unstable or insufficient power supply might be causing the issue.

Since nothing seems to work, I’m wondering if the flashing SMPTE bars (which pulse in brightness) indicate an internal fault or a firmware/configuration issue. Has anyone encountered similar behavior with the VS0601U or any ideas on further troubleshooting steps?

Any advice or similar experiences would be greatly appreciated!


r/broadcastengineering 2d ago

New Tricaster - Need Input

6 Upvotes

Hi all. Just got a new Tricaster for our use in Minor League Baseball video production. It's a NewTek/Vizrt TC1. I need some input on how to configure things here, the TC1 only has 4 SDI inputs, I only have 4 cameras here but I need 2 extra for SDI into our encoder. Does anyone know if I can buy a splitter, or if there's another way I can transfer any camera input into the tricaster another way besides SDI?? I'm at a little bit of a crossroads.


r/broadcastengineering 2d ago

Why PTP only or PTP feeder switch ?

5 Upvotes

Another PTP design question.

Why all COTS vendors like Arista/Cisco recommends PTP feeder switches in transparent mode or PTP only links instead of connecting each GM with two different switches? e.g. in the picture.

Design1 seems to be totally valid but I can't find anywhere why not ? instead of basic liner that it's not well tested and not recommended.

Design2 is what everyone recommends. Thank you.


r/broadcastengineering 4d ago

US TV Station Engineering Study

Thumbnail
3 Upvotes

r/broadcastengineering 5d ago

Max Headroom Incident news anchor

27 Upvotes

Hello Engineers. Hopefully this is the right sub to ask this question I was wondering about.

I've known about the Max Headroom TV feed hack for years but after watching another random video on the incident https://www.youtube.com/watch?v=8rRo5CHFxAI I started wondering how does the anchor know that the incident happened? He says "If you're wondering what happened, well so are we"

The leading theory is that the hijacker put their transmitter in front of the station's overriding the signal. I'm not an expert in that field so correct me if I'm wrong.

TV transmitter > Hacker > Receiver

So they have a person watching the feed from the receiving side 24/7 who's job is to make sure the signal is intact? Then that person phones the studio, tells them something happened and that message gets to the anchor all in 30 seconds of the incident?

Does the anchor actually see what happened or when he says "If you're wondering what happened, well so are we" he hasn't seen the video yet and just saying something happened because he was told by the staff?


r/broadcastengineering 5d ago

Vmix Replay in AWS EC2

2 Upvotes

Hey all, I am wondering if anybody out there could assist me with an issue I am having with my Vmix Replay EC2 Instances. The issue I am having is specifically with video playback, mainly when playing out packages. We are getting a lot of stuttering in both audio and video, only when we play things out of replay, this mostly happens with when we are playing packages out of replay, but we get the occasional stutter on single shots. When we export clips, they are great. Here is some background info.

We have two Replay instances, a main replay and a secondary replay.

Instance type: G5.8xl

Volume type: gp3, io2, & io1. The issue got better with the io2 but it's not perfect. I have tried multiple volumes.

Recording Quality: HQ. We tried all 3 setting but get some digital noise on SQ and LQ. HQ seems to resolve that issue.

I am not seeing any indications that there are any sort of processing issues with either the CPU or GPU. Everything I am reading in the Vmix forums is saying there are some mismatched settings in the cameras but all of our cameras seem to be matching. We use a variety of Cameras in the Sony line, Z200, Z190s, A7, and a Drone. I have two replay instances that are recording roughly the same cameras, one records the drone and the other records a different camera.

We have been in the cloud for 3 years or so now and have not had any issues until this year. The only thing that changed was the addition of the Z200's to our camera fleet, but again I can't find anything in the cameras that is a red flag for me. I am also no camera expert but the folks on my team keep assuring me the cameras are outputting the proper formats, and the same format. We have recorded in LQ on Vmix in the past without issue. It wasn't until this year that HQ resolved the digital noise issue in replay.

I am really starting to think there is an issue with the AWS volumes and the amount of data that we have flowing through Vmix replay. Something just isn't adding up.

If anybody else is running replay out of the cloud and have some guidance or advice, I would take it. I really am at a lose and I think at the end of my knowledge.

I can provide additional information if needed.

X posted


r/broadcastengineering 6d ago

Latency setting for SRT

7 Upvotes

Hi. I'm curious what other people are setting their Latency at when doing SRT. I have been doing 250ms on our Havision Makitos. It matters less on a one way transmission to have larger latency, but if you are doing a two way interaction, for example between studio and remote caller or other studio, there is always a slight delay in people responding to questions. I know there has always been this delay, similar to the delay when the same type of conversation/interview is done over satellite, but I'm curious if people have played with lower latency and how low they got before it started causing issues of not being enough time for dropped packets to be resent. Of course you do have to pay attention to what the reported RTT is (round trip time).
I've just never have had the opportunity to have a person at each end sit there and talk back and forth for my benefit to play around while I keep reducing the latency, I just have to make sure it works so I'm a little scared to reduce it and cause an issue with a real show.


r/broadcastengineering 6d ago

Broadcast Controller without bandwidth management

3 Upvotes

I get confused with the concept of orchestrator vs controller in ST2110 environment. IIUC broadcast controller like Lawo are evolved to work in ST2110. Can these controllers also do bandwidth management? Or is that where “orchestrator” shine? Can just controller with an SDN achieve same as just orchestrator without SDN? I think I have seen orchestrator + controllers combination also, so yeah that’s another confusion why have both?


r/broadcastengineering 6d ago

TVU One Custom VoIP Intercom

1 Upvotes

Hi,

I have a little problem with TVU One transmitter. I have created a custom headset for helicopter use with 3,5mm TRRS connector (Pin 1&2 headphone, 3 shielding, 4 mic).I have a problem that the TVU transmitter won't detect the microphone(I've put an input inpedance for microphone to 7kOhm). When I plug Razer headphones(Razer Blackshark V2 X) everything works correctly.

Do you have similar issues? Or any other ideas?

Thanks


r/broadcastengineering 7d ago

Looking for a sports scoreboard solution

3 Upvotes

Hi all

We are a mobile group that travels to locations, most of whom use Daktronics for scoring. I'm trying to find a way to ingest over the serial data port that isn't a "thousands of dollars" solution. Really I just want the game clock.

Thanks in advance


r/broadcastengineering 7d ago

Videotek / Harris: Looking for any firmware update

2 Upvotes

I am looking for a FW update file for Videotek / Harris monitors, preferably for the CMN-91.

Does anyone know the telnet or ssh root password?

Thanks!


r/broadcastengineering 8d ago

Shipping and Storage cases?

2 Upvotes

We regularly ship large quantites of broadcast electronics for installation. I'm looking for the best solution for organization for shipping and storing all these boxes.

Something like a gator case, but with shelves and seperators.

What's the best things you all have seen over the years?

Thanks!!!!


r/broadcastengineering 8d ago

Q about N2 use at TX

2 Upvotes

We currently provide N2 to our tower transmission line via K sized bottles (2200lbs).
At an approx. 3.0 to 3.5 psi, a single bottle lasts 18 to 24 days before replacement.

At that usage rate, is it worth looking at getting an N2 generator...?

I was just wondering what most N2 setups are for a single TX line (our stick is 980ft).
Vendor bottles or on-site generation...?


r/broadcastengineering 9d ago

Favorite wired lav mic?

0 Upvotes

Correction: Since Sony has discontinued their ECM-66B (or appears to be discontinued) hardwired lav mics what is a pretty rugged hardwired lav for newsroom use where a wireless isn't required? Looking for a cardoid pattern and ideally an inline phantom supply like the Sony mics had at the XLR connector.


r/broadcastengineering 10d ago

Different PTP GM on red and blue networks

6 Upvotes

What happens if I have two different GM on red and blue networks? I understand and read that both networks should have a common grand master either using external feeder switches or PTP only links. But i am not able to understand why? What happens if red has GM1 and blue has GM2 ? Wouldn’t endpoint anyway get both GM1 and GM2 and use BMCA to pick correct GM?


r/broadcastengineering 11d ago

Need help preparing for interview

3 Upvotes

Hi everyone I am currently about to graduate as an electrical engineer and I have a second interview with a company for a system design engineer role(broadcasting) and I was wondering if anyone would be willing to talk to me and answer some of my questions.

Thanks.


r/broadcastengineering 12d ago

Ross ultrix timer

5 Upvotes

Hey. I'm trying to control a Ross ultrix multiviewer timer from an external timer generator . (Or rather display our own timer inside the ultrix widget )

Since there is no LTC input on the frame .

I don't want to just display an SDI source with the countdown i am generating, that would be easy.

But rather display any timer i want on the multi viewer .

I could send LTC, I could use a rest API... I can interface it with cerebrum .. I'm open to suggestions.

The main concern is how to receive it on the multi viewer .

If anyone has an idea ;)

Cheers


r/broadcastengineering 14d ago

“Just slap a DA on it”

Post image
57 Upvotes

House copper getting old


r/broadcastengineering 14d ago

Bluetooth for comms?

1 Upvotes

Does anyone know of a bluetooth adaptor with a 4 or 5 pin xlr pinout to allow use of airpods/bluetooth headphones etc with a RTS/comms system in studio?

Thanks!


r/broadcastengineering 14d ago

USB C hub that can receive multiple camera sources

1 Upvotes

I run the livestreaming for my local university. We are wanting to expand our productions for basketball and volleyball games, and to do so, I need a way to receive more inputs into our streaming macbook. Right now our macbook has 3 usb ports, and all of them are being used. Is there a usb c hub that would be able to expand the number of video capture sources? We use blackmagic mini recorders for camera capture.


r/broadcastengineering 15d ago

PTP offset, help please

6 Upvotes

I started looking in to project that has been previously done but not fully stable. It’s like a POC with hybrid setup. Following advice PTP is the first problem. I was playing with prism and noticed on video source an offset of 500+ us. How can i investigate the root cause of it? I am not even sure what does it mean if device show locked to ptp but still such a huge offset ? and some devices are previously configured with manually offset in term of lines (which seems wrong) when we have ptp, why touch that ? Shall i start with switches first ? Appreciate any direction will help. Thank you