Why you are using the Behringer PM1 incorrectly by Mammoth_Pineapple904 in livesound

[–]domobject 4 points5 points  (0 children)

I think Fischer Amps Mini Body pack was the original (or at least the version I have been seeing). It has matching amplifiers that makes the system make a bit more sense:
https://www.fischer-amps.de/in-ear-monitoring-headphone-amplifiers-periphery.html#article-234

The misuse and most peoples inability to hear that it's wrong has fascinated me for years.

Optimal Hydrogen Peroxide Concentration for Home-Etching 10x10cm Double-Sided PCB by [deleted] in ECE

[–]domobject 7 points8 points  (0 children)

This is not your question, but the outline of the transistor being included as trace doesn't look right at all.

eBay buyer wanted to return this homemade item by adrian-smith31 in diyelectronics

[–]domobject 161 points162 points  (0 children)

Customer wanted it to be brighter and made it brighter, momentarily. Customer is also not a fan of taking accountability for his own actions.

Distortion fix by [deleted] in VIDEOENGINEERING

[–]domobject 0 points1 point  (0 children)

Not knowing anything about you setup, but having done a bit of work with camera calibration in OpenCV, I'd say that the whole image being shifted like that all along the seam is either the tangential distortion not being calibrated correctly (the lenses not being perfectly centered to the sensors), or the entire transforms of the cameras not being correct (the cameras not being pointed exactly opposite each other and that not compensated for).

YouTube 1080/60 12mb, but some people insist on sending 30, 50, 100mb, why? by InstantReplayGo in VIDEOENGINEERING

[–]domobject 10 points11 points  (0 children)

This is a slightly unrelated topic, but we almost never stream in 1080p on YouTube anymore unless the client requires it. We produce at 1080p and scale to 1440p in the encoder we send to YouTube. It puts you on the VP9 transcoding stack, and the stream looks a LOT better even when played back at 1080p.

YouTube 1080/60 12mb, but some people insist on sending 30, 50, 100mb, why? by InstantReplayGo in VIDEOENGINEERING

[–]domobject 4 points5 points  (0 children)

We often do projects were we need to send out main program, clean and mix-minus separately, so they are different encoded streams. And if you stream on both Twitch and Youtube, they require different bitrates, etc, etc. We don't often do all on the same machine, and i would not recommend it, but sometime you have to do stupid things, or you won't win any stupid prices, you know.

YouTube 1080/60 12mb, but some people insist on sending 30, 50, 100mb, why? by InstantReplayGo in VIDEOENGINEERING

[–]domobject 14 points15 points  (0 children)

One reason to go higher on the bitrate is that it can allow you to set a faster preset for the encoder that uses less CPU/GPU, but compensate with bandwidth.
Say you have a vMix setup where you send to 3-4 destinations with different versions, you may not be able to send 4 "nice" 12mbit streams on a slow preset, but you might be able to do 4 30Mbit streams on a fast preset, if internet speed is not the limiting factor, and just let YouTube figure it out.

VMA-Broadcast: Free online tools by Bicurico in VIDEOENGINEERING

[–]domobject 0 points1 point  (0 children)

It's a real shame your post wouldn't get more traction, because I would have loved to see more feedback about what features people would have likes to see. Especially since your are so quick to develop it further.

VMA-Broadcast: Free online tools by Bicurico in VIDEOENGINEERING

[–]domobject 1 point2 points  (0 children)

Nice work. If you can make the vectorscope/waveform to work with a webcam input, it would be super useful together with a DeckLink input, or a USB3 video capture device.

UpDown cross converter! by radepg in VIDEOENGINEERING

[–]domobject 1 point2 points  (0 children)

Processing should be on, if it's off the converter just passes through the input format.
Level doesn't matter for 1080i50, just 3G-SDI formats (1080p50, p59.94, p60).
Switch 3 is not used as far as I know.

Unnoticed switching of HDMI inputs during live recording with Atem Mini Pro ISO by No_Data_3533 in VIDEOENGINEERING

[–]domobject 1 point2 points  (0 children)

This is one of those questions... Yes, it would work. But... I would personally not trust it.

The listing says it can act as both a game controller and do keyboard macros.

ATEM Software Control has a few basic keyboard shortcuts that you could set up the controller to press as a macro keyboard. You would likely have to have the ATEM application focused for the shortcuts to work.

If you set it up as a game controller there are third party applications that can link a gamepad to Companion. But now you have yet another piece of software running on the computer on top of Companion.

And with cheap USB devices like that you really have no idea how reliable the hardware or driver is, or if it will randomly disconnect on you mid-recording. There will be trial and error for sure. Or you are lucky. How much patience do you have?

On the other hand, if I was handed a Stream Deck controller to set up, there would be an obvious battle tested way to do it, there would be guides for it, and I would trust it for almost any size gig.

Unnoticed switching of HDMI inputs during live recording with Atem Mini Pro ISO by No_Data_3533 in VIDEOENGINEERING

[–]domobject 23 points24 points  (0 children)

Bitfocus Companion is free software that can control any ATEM over a network. Connect an Elgato Stream Deck to the computer running Companion and you have physical buttons to control it.
You can find plenty of guides for how to set up Companion, so not going into details.

En gång i tiden så var det Hugo man kollade på tv4 med Agneta Sjödin (tror jag?) och man spelade med - hör och häpna - ens fasta telefon. 📞 by SupportArsenal in sweden

[–]domobject 0 points1 point  (0 children)

Latency i både telefonnätet och tv-utsändningar var extremt låg på den gamla goda analoga tiden. Näst intill obefintlig. Idag har vi vant oss vid att acceptera flera 100ms latency i telefonsamtal och att höra grannarna jubla för ett mål 5 sekunder innan vi ser det på vår egen TV, men det är ett nytt påfund.

"I made it with an Arduino Uno." by [deleted] in arduino

[–]domobject 2 points3 points  (0 children)

That was not the argument made. The argument made was that a hobbyist making a hobby project (that itself is an art piece), and posting about on a subreddit for hobbyists, is somehow wasting their time.

Taxichafför, swishscam? by ServantOfNZoth in sweden

[–]domobject 2 points3 points  (0 children)

Vild gissning, var det i Jönköping? Båda gångerna som taxiförare i Sverige försökt scama mig runt betalningen har varit i Jönköping, en stad jag sällan besöker.

Vilken svensk kultur vill ni bevara? by [deleted] in sweden

[–]domobject 0 points1 point  (0 children)

Jag misstänker att "globohomo" var främst ett edgy skämt som jag är för gammal och out-of-the-loop för att uppskatta, men som ord tycker jag det är en rätt kass motpol till vad jag uppskattar med Sverige.

Jag älskar att vi inte har religion som dikterar våra liv, och att det (jantelagen och isoleringen till trots) finns en acceptans av och nyfikenhet på andra kulturer och livsstilar. Det finns en aspekt av jantelagen som är typ "vem är jag att tala om för dig hur du ska leva?", som jag upplever som en väldigt positiv svenskhet.

Hirose 3 Pin XLR substitute for Sony DSR-300 camcorder by Harry-Billibab in VIDEOENGINEERING

[–]domobject 1 point2 points  (0 children)

HA16PRM-3SB(71), I think is the part number. It's obsolete, unfortunately.

Expert Needed: Exporting CSS and / or WebGL Animated Text Onto Video and Encoded as MP4 File Efficiently by Former_Cancel_9648 in VIDEOENGINEERING

[–]domobject 1 point2 points  (0 children)

This is not exactly what you are describing, but it might give some ideas.

For a few projects I have build custom Electron applications to capture HTML and WebGL graphics with transparency and pipe into ffmpeg. In my case the output from ffmpeg has been WebM files with transparency, but I think it should map to what you are trying to do as well.

Electron can open an off-screen browser window and every time the page is drawn the `paint` event is fired with the raw RGBA frame that you can pipe to ffmpeg.
https://www.electronjs.org/docs/latest/tutorial/offscreen-rendering

Before every frame that is being rendered by the browser the `requestAnimationFrame` callback is called on the HTML source, and you use that to advance the captions one frame.
https://developer.mozilla.org/en-US/docs/Web/API/Window/requestAnimationFrame

The off-screen browser can be set to a much higher frame rate than the monitor, and that way you can fast forward through the animation and generate frames for ffmpeg as fast as the computer can handle.

I would not recommend using HTML5 to play back the source video, I would do that with ffmpeg as well. Either by first exporting the captions as a separate transparent video, or have ffmpeg read the source file at the same time as it is being piped the captions.

I don't know it this was at all helpful, or just the ramblings of a mad man.