/r/VIDEOENGINEERING

Photograph via snooOG

This subreddit is open to anyone to discuss, share and show their work, as well as ask questions towards anything concerning video production. From a dad with a camcorder to a professional engineer at the superbowl, or a small meeting room operator to a widescreen specialist, LED wall engineer or a electrical video engineer. All things video are welcome!

Feel free to post anything you like from questions to pictures.

Rules: 1: BE RESPECTFUL 2: No for-profit advertising 3: No harassment

Welcome to r/videoengineering! Inspired by our brother subreddit: audioengineering

This subreddit is open to anyone to discuss, share and show their work, as well as ask questions towards anything concerning video production. From a dad with a camcorder to a professional engineer at the superbowl, or a small meeting room operator to a widescreen specialist, projectionist, LED wall engineer or a electrical video engineer. All things video are welcome!

Feel free to post anything you like from questions to pictures. Remember that no question is stupid and we work together to create a friendly community.

If you have any questions or suggestions please feel free to messsage the moderators! We would love to make this a great and successful subreddit for all of us video engineers!

Our first rule: BE RESPECTFUL.

*Quick link to:*

Our discord

/r/CommercialAV Commercial audio, video, and control technologies

r/Livesound Live sound world

/r/broadcastengineering Also includes radio!

/r/crestron All that is good (and bad) in the world of Crestron

r/audioengineering Many things audio!

r/audiopost For post-production sound geeks in Games, TV, Film, and Broadcast

r/LocationSound Location sound AKA Production Sound

r/talesfromproduction All your weird stories

/r/VIDEOENGINEERING

45,921 Subscribers

1

Hello, I want to get started and learn about video streaming, setups etc. I know about basic stuff. I want some kind of resources to learn more. Thank you.

11 Comments
2024/05/05
13:13 UTC

2

Lindy Splitter Service Port

Hi guys, I have a Lindy 4 Port HDMI 2.0 18G Splitter. Used to work for 2 years, now only Output Port 4 is working. But the LEDs on the other 3 Ports still light up when a device is connected. The Splitter got an USB-Mini Port which says service but i can‘t find any firmware updates or software online so that i could use this USB-Port. Does anyone knows what is it‘s purpose?

0 Comments
2024/05/05
07:11 UTC

2

Audio video sync

Does anyone know of any audio video sync app? Been looking for a good one for a while and have not found any.

4 Comments
2024/05/05
06:55 UTC

2

Running the following ffmpeg command to convert SDI to UDP but not seeing any video output

sudo ./ffmpeg -f decklink -i '81:759ac3b0:00000000:auto=0' -video_size 1920x1080 -pix_fmt yuv420p -c:v libx264 -b:v 10000k -bufsize 10000k -profile:v high -bf 2 -g 30 -r 30 -f mpegts udp://127.0.0.1:5000

6 Comments
2024/05/05
04:57 UTC

0

If I have buy 50 500mm x 500mm x 85mm panels, how big is the screen

16 Comments
2024/05/05
02:43 UTC

1

Ikan BZ500

Thinking about buying an unopened ikan bz500 wireless unit on Facebook marketplace. Priced at $350.

I couldn’t find much about these units online. Can anyone speak to their performance or reliability?

0 Comments
2024/05/05
02:22 UTC

3

LED Wall Help

Hello,

I have a video wall that I’m trying to utilize. It was working fine up until a few hours ago. Now it is completely black and no picture will show. I’ve checked Novastar and everything is fine. The lights on the back are all flashing green in a synchronized manner. There is power flowing through it.

I’ve tried factory resetting the processor, receiving card, sending card and the configuration. It still won’t display an image.

I’ve disconnected two of the panels: one for the signal coming directly in and the other panel was pushing the signal through it. I connected both of those connections to an external panel and I get perfect picture on it.

Any ideas on how I can resolve this?

27 Comments
2024/05/04
22:58 UTC

32

This doesn’t look right

I’m no expert, but I’m pretty sure this is what you want you signal to look like 😂

21 Comments
2024/05/04
21:05 UTC

4

Analog way Aquilon custom edids.

I have a job coming up soon working with an aquilon for the first time. I’m used to hooking up to an e2 and pushing custom edids, like 4608x1720px over one dp cable. I run media servers, in this case Watchout.

This aquilon op is telling me it doesn’t do custom edids and the upper limit is 4096x2160.

I’m looking at the manual and it clearly states it can do custom edids, section 12.1

It says nothing about an upper limit anywhere.

Am I being lied to? There are so many “video engineers” these days. I suspect this person doesn’t actually know what they’re talking about.

My expectation is to be able to create any size rectangle as long as it’s less than 8.2 million pixels, 4k, just like the e2 does.

Someone please clarify for me.

9 Comments
2024/05/04
19:46 UTC

55

My first ConnectCAD schematic looks like dog excrement. Any tips?

37 Comments
2024/05/04
19:40 UTC

3

Stripper for Belden 4855r

Hello all,

Im using Belden 4855r 12g with NEUTRIK NBNC75BDD6 ends for an SDI patch bay, I'm having some trouble trying to find the correct stripper and cartridge, from all of your experiences. what is the best stipper to use in my scenario. I am aware that the BNC ends are for 3G cabling, and i have checked that 4855r will fit.

Many Thanks

James

15 Comments
2024/05/04
16:00 UTC

5

Issues with HDMI switch and optical cable

Hello there !

I needed a 10m/32ft long HDMI cable to link my computer to my TV that is a bit too away from the source, using a switch to swap from my monitor to my TV from time to time.

I read that many copper based HDMI cables have issues with such length, so I decided to try an optical one, when I plug it directly on my GPU, it works flawlessly, but whenever I plug it to an HDMI switch, the TV detects a device, but the video signal is lost.

On the other cable, the 2.0 copper based one, the switch works flawlessly.

I tried to buy a powered switch, but nothing changed, and now I feel a bit lost.

Do I need to make every cable optical ? Is the switch not sending enough power ? (the switch requires 5v 1A, I plugged it to a 5v 2A charger to be sure it's enough)

Thank you for your help.

Edit: I bought a switch on purpose, the point is just to avoid getting behind the desk plugging and unplugging cables every time I want to use the TV for a movie or a game, to be able to swap between one of my monitors, or the TV when I need. This switch was advertised as working in both directions, actually this setup worked pretty fine with all copper cables, it's just the optical one that causes me trouble.

https://preview.redd.it/zk7uiwtvyeyc1.png?width=725&format=png&auto=webp&s=4ad901cbd1dc1127c3a43c362f3312087e71a5a6

The 2.1 optical cable :

https://amzn.eu/d/dr5Fa1U

The 2.1 cable from the computer to the switch :

https://amzn.eu/d/iVs6ypJ

The 2.1 switch :

https://amzn.eu/d/1xdkk0W

15 Comments
2024/05/04
14:04 UTC

1

how to play a video on projector and stream.

Hi, im using an atem mini pro, to stream. 3 cameras connected, 4th hdmi input it from the computer, where i play the videos. The sound from the computer is sent to a x32 sound mixer, where all of the sound is being sent to the atem. Right now how we do it is, we have the projector set as a screen, there we but the livestream. Then the atem computer screen we put the video, this works alright except for the sound. The projector video is couple seconds behind the audio. Any other ways. If u need other information tell me and ill answer Asap.

13 Comments
2024/05/04
13:29 UTC

2

Downsampling 4k vs 1080p to 720p

Wondering if there is a huge difference between shooting 4k compared to 1080p to be ingested into Xfile which then downscales it to 720p for broadcast? Thanks

6 Comments
2024/05/04
06:43 UTC

2

Controlling Sony SRG-A12

Hello all,

I just bought 1 SRG-A12 to test it out a bit before venturing into more investments.
I gotta say, I am not having fun at all.

I am pretty well versed into setting any available kind of PTZ on the market and I cannot for the life of me get this one to work with a controller.

I own a PTZ Optics SuperJoy Controller cause I usually work with various AV suppliers as well as my own PTZ and it's an O.K. controller that works with every brand out there, including SONY....usually.

Dipswitch 3 (VISCA ON) on the PTZ is set up.

I have tried all the available protocol on it and it cannot drives this PTZ. (UDP,TCP, SONY UDP, Websocket, NDI, Panasonic even cause I'm that desperate)

Is there anything I am missing or does it only work in Web Browser mode?

Thank you kindly!
Fred

2 Comments
2024/05/04
03:05 UTC

2

Remote production gigs?

Does anyone know of any clients that need remote producers? I have a client that needs regular Fridays and Saturdays but I think there might be some room for some other remote productions. Since I’ve upgraded my PC to do this work I want to capitalize as much as possible on the investment. I have a full time job but I’m available nights and weekends. Any recommendations?

4 Comments
2024/05/04
02:45 UTC

1

RC Drift Track Replay System

I am a co-host of a competitive 1/10th scale drift series at the local RC Track. We have an area that covers about 25'x60'. During our competitions, it is very helpful for the judges to have access to replay footage of each competitive run which lasts about 120 seconds. The best vantage point for this footage would be from the ceiling looking straight down. I figure we'll need 2-4 cameras to cover the whole track. We need the footage to be readily accessible by the judges, at least 720p and 60 fps. The frame rate is key because our cars can move a long way in 1/60th of a second. Beyond on that I have no clue what I am looking for, or what equipment is required. My budget for this project is fairly low, though I am aware that nothing in this industry is cheap. Creativity for keeping this as inexpensive as possible is appreciated. I am hoping someone can at the very least point me in the right direction.

5 Comments
2024/05/04
01:21 UTC

1

Split Screen/Extended - Video Wall Configuration for a webpage

As part of my exhibition display, i want to show an image on two 75 inch TVs top of each other.

The image need to be split between two screens and people will be able to zoomin/zoomout via a mouse/ touchpad. I have a desktop with video card but when i connect it, the desktop gets extended but window maximizes to one screen only. Am i missing something? Is there an easy way or technology?

2 Comments
2024/05/03
21:23 UTC

12

BMD SDI to Fiber : go with BMD converters or other system?

I'm building out a mobile production van that will need a 4 channel bi directional run of fiber for 4 BMD cams. Plan for 200+ feet of Fiber in van. Is staying all BMD preferred or do you use alternatives that are more cost effective for 4+ channels of Bi-Directional?

Not expecting to expand beyond 4 soon.

Thanks

23 Comments
2024/05/03
20:40 UTC

11

Help identifying text overlay?

We don't have any blueprints for this space so we're trying to track down where this text is coming from?

I'm almost positive its coming from a crestron device but this room has hundreds of dongles and converters. Using a ross carbonite switcher, lots of extron extenders, crestron hd scaler, vaddio av bridge etc.

Does seem to be coming from the extender but maybe the switcher? Hoping someone just happens to recognize this banner/text.

7 Comments
2024/05/03
19:59 UTC

0

What perfect VHS SP NTSC (NTSC-J) looks like from vhs-decode

0 Comments
2024/05/03
19:13 UTC

1

New Panels here and Blue is dark

New Panels arrived here and Blue is so dark relative to R,G. How can I boost the blue to get them to match? Thank you PS I am using NovaLCT, but can change the software if needed.

14 Comments
2024/05/03
18:24 UTC

10

[Atem + Arena] Fill & Key sync

I have a problem with my Atem switcher. I play videos via Resolume Arena, where I have two outputs (Fill & Key) that lead to the video mixer via a decklink. Unfortunately, it seems that fill and key are not quite synchronized. What could be the reason for this?

16 Comments
2024/05/03
17:56 UTC

4

Projector throw distance?

Hi everyone, just wanted to get some input on something I heard on a gig the other day. When calculating the distance for a projector, is the width of the screen multiplied by the throw ratio of the lens a good starting point?

I know there's throw distance calculators online, but when making quick decisions on the fly, is this a good way to calculate? Additionally, does anyone know how much the margin of error would be for using this calculation? TIA!

23 Comments
2024/05/03
17:08 UTC

3

Remote control / network for Sony A7 mirrorless cameras?

I have a live show with several fixed position Marshall cv566 cameras in addition to venue FOH cameras that change all the time. As an experiment I added a Sony a74 camera to cover the main talent and the client really liked the image from the Sony camera- and would now like to add more Sony cameras to replace marshalls.

The lighting team works closely with the camera team so the levels can be adjusted as needed and/ or stay consistent from show to show (for interior theaters) though we sometimes do exterior venues where there is less ability to set levels before the show.

Is there a way to remotely adjust Sony mirrorless camera settings (mainly exposure) for multiple cameras? Or create a wired network of some kind?

There is a consumer app called monitor plus that does this over 5G camera wifi but I don’t think it would be reliable enough for use in a crowded venue.

I’m aware that blackmagic micro g2 cameras are designed with this in mind and there’s also software to control red Komodo settings for multicam- just checking Sony options because we have a few Sony mirrorless cameras already.

4 Comments
2024/05/03
15:57 UTC

3

3Khz audio whine over SDI from PTZ

At an events venue, we have 4 PTZOptics cameras we use which are connected via SDI to a Roland v160hd. If we don’t make sure to mute the audio feed from the SDI inputs on those cameras (on by default and gets reset sometimes) we get a bizarre audio whine at exactly 3Khz, 6Khz, 9Khz, 12Khz and possibly 15Khz, but that one’s harder to verify. A notch filter mostly takes care of it in post but I couldn’t find anything explaining why this might happen and was curious if anyone else had experienced anything similar.

11 Comments
2024/05/03
15:22 UTC

1

Barco Event Master JSON for Trans Time

Hey hey

I’m trying to set up some control bits for an S3 using the JSON API which is mostly very good, however I can’t find a command to change transition time. I can save it in presets, and recall it that way but it’s a bit more dull.

Is there a command that exists to change that?

Thanks thanks thanks

2 Comments
2024/05/03
15:09 UTC

2

Question about small camera for livestreaming.

Hey y'all! I'm looking to set up a small camera on the side of my reptile enclosure. I'm really looking for something that has livestreaming capabilities, a decent battery life and it has to be small enough to comfortably capture a 12x12 space. The options I've considered so far are the Sony action cam and possibly a model of go-pro but those feel very action based and I'm unsure what other options may be available. Anything helps I'm currently ripping my hair out over here trying to scrounge the internet.

3 Comments
2024/05/03
13:19 UTC

6

Used ENG Camera Recommendation

I'm shooting freelance tv news and looking to buy a full-size used ENG broadcast camera in the $2-$5k range. Any recommendations on what other freelancers or crews are using these days?

24 Comments
2024/05/03
12:58 UTC

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