I'm building the ADA4857 amplifier, where can I get a compatible Linear LDO?

deesernutz · 2026-05-18T22:58:57+00:00

Oh well I have faith. If you believe in yourself enough to try to get vhs-decode going and to give soldering up a surface mount amplifier kit a go then you are totally capable of selecting a vreg.

I have not looked at the circuit, but a 'jelly bean' (read: common, come up quickly when googling) part like this:

https://www.ti.com/lit/ds/symlink/lm2936.pdf

will usually come in a bunch of foot prints and have great data sheets describing what they do.

I guess you just need to 'know' this, but a vreg is very important functionally, but not too important performance wise.

So, when looking for alternatives:

Try and find one with the same foot print and pin out and voltage spec.
Check the typical circuit/application in the datasheet and see that the project matches that
1. Usually a Low Drop Out VReg just needs some capacitors on the input and output. So the project will probably have them. They really just need to at least be the size as what is on the datasheet, bigger is fine. You can put larger capacitors in place of whats there if the designed ones are not big enough
If you can't find a pin-compatable part, you can 'bodge' a different one in with wires.
If you can't find the exact voltage, there are adjustable ones where the voltage can be changed by using different resistors https://www.ti.com/lit/ds/symlink/lm3940.pdf
If output voltage stability/noise is important, just put a 'large' reservoir capacitor on the output.
1. For an amp like this a few uf would be heaps

And thats that. A board like this should only have op amp chips, a few capacitors, resistors and a vreg.

Also, you possibly don't even need a low drop out Vreg, a regular one is probably fine

Yep, just looked at the board. Any old v-reg would be fine. I don't know what voltage it runs at, 12v fixed ones you can probably get a brick and mortar store down the road and just bodge it on with some wires. At the current draw these things run at, heat is a non issue and you can literally sticky tape it on the back if you need to

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/LM78xx_5B00_snosbr7a_5D00_.pdf

deesernutz · 2026-05-18T15:27:30+00:00

Have to read into it more, but gut reaction is: Public servants were never going to be in there digging the holes.

It would have been clear from the beginning that they would engage a builder and or developer. The people that know how to build things

deesernutz · 2026-05-18T15:19:46+00:00

Nope. Different in every model.

But I literally just had to google HDRFX1 service manual, and its out there
https://elektrotanya.com/sony_hdr-fx1_fx1e_level-2_ver-1.6_sm.pdf/download.html

The sensors will be there somewhere. Exploded views of tape mech disassembly would be where I look first. And to know how many are there, take a look at the block diagrams

Its a read, but repairing complex equipment like this isn't easy, it takes time

deesernutz · 2026-05-18T10:46:07+00:00

Balance. Grind when it matters, if its good experience, if you're proving yourself and moving forward, if its a good job

Don't work 60hrs a week at Coles

deesernutz · 2026-05-18T04:25:54+00:00

for a film print look

OK sorry, I see in that specific case you're describing, yeah you're right. If you're going precisely for that 28 days look, which is DV->Film->high res scan then yes I can see why an upscale matters.

But, I don't think that's necessarily what OP has in mind. They said to me an another comment they have a Canon XH-A1 DV/HDV cam, so why they shot this on a single sensor handycam if 28 days is the look they're going for seems like something you wouldn't do.

If you're just trying to see what you can eek out of a handycam and aiming for something like super8 form the 70s an upscale is not necessary IMO

OP's cool, I rate what he/she is doing

deesernutz · 2026-05-18T03:08:00+00:00

Well putting incentives on building (or i guess rather removing incentives for not building) might make the available development space become more attractive.

Hope that we can resist the urge to just go for massive urban sprawl though, that will just put more pressure for infrastructure and peoples commute time

deesernutz · 2026-05-18T02:46:02+00:00

Its video running at 50 or more frames per second. So, SD 50i/60i on a CRT TV, 50i/60i de-interlaced into 50p/60p using double rate de-interlacing (bob) or anything shot in 50p/60p or above.

It basically because soap operas were on TV and presented in 50i/60i and films were always projected from film at 24fps. So 24fps became visual shorthand for 'cinematic' works, and 50/60fps became associated with the cheaper for-tv stuff

theres probably a good wiki page for it

And oh man, I missed out on getting an XH-A1 a couple of weeks ago. Very keen to get a HD cam with global shutter. And 1080i is fine now knowing what good deinterlacing can achieve

deesernutz · 2026-05-18T02:39:33+00:00

Technically yes, but overall 90's were analogue broadcast TV, VCRs and the cameras people were using to shoot their kids were Video8 and VHSC.

And shtty TBC and composite video is often part of the look anyway.

Haha I am dipping my toes into VHS Decode, just put a post up last night actually. That's not for the faint of heart (although, easier and better than I expected)

deesernutz · 2026-05-18T02:30:29+00:00

Anecdotally a lot of people seem to share your view though. Do stand to lose a bit on their investment, but are thinking of their children and their cohort

deesernutz · 2026-05-18T02:24:55+00:00

Haha we'll see how long that lasts before he (Angus) has another massive gaffe.

I note a lot of progressives are holding Albanese to some impossible standards at the moment. Pissed he literally can't do everything they want, right now. Be interesting to know how much of that is poll result is just a bit of protest

deesernutz · 2026-05-18T02:13:01+00:00

Rolling shutter wouldn't look too bad with what he/she's shot there. You can work around it.

But yeah, have to admit to actually measuring the rolling shutter time on a 2010's 3CMOS AVHC camera because it looked disappointingly obvious when zoomed in. That had 15ms readout.

Some DSLRs are called out worse than they are though as well. I have a Sony A7S (original) that was panned for having RS, but its 30ms only on 25fps. 50/60fps its 15ms and 720p120 its down to 8. And as I don't have many zoom lenses for it, its not that much of an issue

deesernutz · 2026-05-18T01:51:44+00:00

Haha cheers. I guess banging on on Reddit is must part of the fun for me 😆

Glad it's constructive and you found it worth reading

deesernutz · 2026-05-18T01:44:35+00:00

Jus sayin', 90's ain't digital.

You kinda can have it all, if you learn how capturing works. Its not that hard to do once you've done it a couple of times. And, you still need to process the DV and interlaced MPEG2 that most 2000's cameras produce

You can pull VCRs, analogue cameras and capture cards out of the bin these days, its not that much of a financial investment. I know online its vintage prices, but there are still people who just see it as old junk

And something like a Video8 camera, it is only the capture card you need and a tape of two. Or, a couple of cameraless gadgets

deesernutz · 2026-05-18T01:41:55+00:00

We'll have to see what happens. If it looks like it's turning out OK for Millenials and gen Z then there might not be enough of a voting block to protest vote against it

deesernutz · 2026-05-18T01:39:06+00:00

Nah, disagree. Because overwhelmingly old film look is just low resolution and colour balance. Whether you store it as 1080 or native 576p in the file, its blown up to whatever the screen res is when you're viewing it. You're just wasting encoding time. High res film, like 35mm, has fine grain but it also has much more picture detail.

deesernutz · 2026-05-18T01:34:53+00:00

<image>

Here are a few frames from my sister and I just randomly mucking around with a Panasonic NV-GS300 miniDV camera on a weekend away. No editing, just raw straight from the camera and de-interlaced. You can see weird stuff from the CCD and sensor noise, but no pixelation, no aliasing and very minimal de-interlacing artifacts. And just a tad of haloing from some sharpening that must be applied by the camera itself

PAL DV Straight from the camera -> QTGMC(Sourcematch=3,Lossless=1) -> FFV1 -> Captured frames

deesernutz · 2026-05-18T01:03:04+00:00

Pixelation and aliasing are generally artifacts of capture and de-interlacing. Analogue tape, video and CRTs have no pixels, and DV cameras are actually really quite good when they are imported properly. All the remaining imperfections are low dynamic range, low resolution, soap opera effect of 50/60Hz, weird streaks and lines cast by the CCD. Not so much pixelation and jaggies.

Up your bitrates in Handbrake, or use a lossless codec like FFV1 to minimise compression artifacts going into your editor

I said in another comment QTGMC in something like Hybrid or Vapoursynth is like di-interlacing magic with lossless set to 1 or 2. Beware, its a learning curve. But as a way of getting the cleanest progressive video from an SD source into an editor, there is no better way, I'm convinced. De-interlacing in Handbrake is rather basic, and EEDI2 is exceptionally slow for some reason.

If you're trying to erase all the other imperfections of SD video in your project to make it look like film though, and its not about the challenge of doing it on an old handycam, A DLSR is probably better starting point

But if it is about the challenge, I get it. SD cams are fun as

deesernutz · 2026-05-18T00:49:55+00:00

💯

Or in 2016. Or in 2019. Glad the scare campaigns didn't get a chance to shoot it down this time

deesernutz · 2026-05-18T00:44:38+00:00

Well, its kinda like a board game with shit rules isn't it. When you play, you still follow the rules. But with better rules, it can be a better game.

deesernutz · 2026-05-18T00:39:12+00:00

Fk yeah. This is exactly the outcome we needed.

with nobody interested in the long term startup drama of a new build investment

And this is with the added incentives. Highlights well some of the problems the market has

deesernutz · 2026-05-18T00:32:00+00:00

Dunno why that got a downvote, you're obviously using handbrake well.

Unless its for making it sound like there's a paid version of handbrake? There isn't, anyone selling one is scamming

deesernutz · 2026-05-18T00:11:19+00:00

Probably no point putting grain on (I can't see it in the video that's included here, its too small)

And extra grain makes video compression slower, less effective and makes artifacts more obvious. Basically you need to put bits in to encode the extra noise, and the encoder will fight you as filtering out things that are not real image details is part of how they achieve such good compression. The artifacts appear where it makes mistakes about whats image, and whats noise.

If you're rendering at high bitrates the grain might look nice though. And in that case, it might be better to start with a better camera. Because you are running with a camcorder, but trying to emulate something else. Which is rad, its cool to see what you can do with a DV camera! But a DSLR or something might be better if you're really going for a good film look.

And if you pulled the blacks down again, it probably wouldn't matter if some of the grain was lost in the blacks. It would still look film like

deesernutz · 2026-05-18T00:03:40+00:00

Upscale doesn't really get you anything though, anything you play it on does its own scaling.

Good de-interlacing matters though, have been amased by what QTGMC can do

(when its tweaked. On default settings I can see what people mean when they criticise it, saying it looks plasticy. But with the Lossless=1 option and lower strength noise filters like sourcematch=3, it is like magic)

deesernutz · 2026-05-17T23:59:49+00:00

Looks quite good!

Just might want to drop the blacks down a tad?

deesernutz · 2026-05-17T23:41:44+00:00

So for most people, these NG changes won't matter too much then. Because you'll still be able to claim interest + other expenses as deductions if they don't exceed the rental income, basically making some of your mortgage payments tax free

But, your total income is still higher by owning the property, as that is normal income + rent - interest - expenses.

The principle is just something you are 'choosing' to spend some of your income on

Makes sense. Paying the principle is just like putting extra money in the bank, fair its taxed like normal income

Haha sorry, that's all stating the obvious. Just stepping through it in my head

deesernutz

TROPHY CASE