EEVblog #686 - Mailbag

[SL4P]

BTW - sequential (concatenation of) encode/decode/transcode processes does nothing to help the spatial or temporal integrity of a compressed video sequence.

You may 'skate by' in one domain, if the field-frame-rate, or XY resolution and colour-depth are identical, but any other combination *MUST* by definition cause some interpolation or aliasing of adjacent data elements. 

No other possible option*.  Whether you can see it or not, how the (trans)codecs drop lines/pixels/frames is up to the algorithm and the content.  Not the cameraman or publisher.

* the transcoding engines can be very clever, but can't create original filler content out of 'nothing', and merged elements are a 'best guess' - there is no 'real' data to fill in the holes. That's just the way it is.

Physics and nature are a pain in the ass.

[nitro2k01]

Would you argue that it's true black people have fat lips, funny accents, bright white eyes like lightbulbs? Or maybe women are bad at maths and parking their cars? You can see where this line of reasoning takes you.

The difference is that the jokes in that letter are referring to cultural stereotypes. Your other examples are referring to genetic stereotypes.

[Artlav]

The extra hilarious part of the Wun Hung-Lo thing is what the Chinese text says.

"We don't care about quality, only care about income"
"Dave is awesome"
"Poisonous stuff"
"No safety was harmed (or used) in assembly"

[nitro2k01]

Artlav, you forgot the logo. "Smelly dog shit", or in canon "steaming pil of dog turd"!

[Fungus]

Isn't Canon a Japanese company?

China *can* make good stuff -  if you're prepared to pay them more than $0.02 per delivered item.

The fact that Canon is employing Chinese workers doesn't magically shift the blame to China. Canon is responsible for that particular battery charger, not WHL.

[Monkeh]

Isn't Canon a Japanese company?

China *can* make good stuff -  if you're prepared to pay them more than $0.02 per delivered item.

The fact that Canon is employing Chinese workers doesn't magically shift the blame to China. Canon is responsible for that particular battery charger, not WHL.

.. are you really operating under the assumption that's an actual Canon charger?

There are some truly gullible people in this world..

[Fungus]

Oh yeah, the video. I didn't notice any difference.

It's not like Dave's videos are fast action with lots of sideways panning or anything like that.

Maybe he's rotating the knobs on the multimeters too fast for some people's Internet bandwidth. I dunno.

[Fungus]

.. are you really operating under the assumption that's an actual Canon charger?

 

[Carrington]

About Wun Hung-Lo, I'm still laughing...   

[coppice]

The smaller battery in that multi-meter is a 15V thing that was used in quite a lot of analogue meters. There were at least 2 kinds - one square or round, and the other rectangular. AVO used the rectangular one. TMK used the square one. With such narrow uses the damned things cost a fortune.

[84GKSIG]

well now you got me worried and made me look at my canon charger    not everything out of china is bad, if theyre mass producing something for a big company they will have to produce goods which meet a standard set by said company, if big companies are closing their eyes and letting potentially lethal products out on the market made by their manufacture  for a price then thats no good on behalf of the company. You see this happen quite a bit sadly 

[conducteur]

I have a 1080 laptop, and it's not possible to watch the 50fps. Had to switch down to 720. I don't think the 50fps is an improvement, when i need to lower the resolution.

[Monkeh]

I have a 1080 laptop, and it's not possible to watch the 50fps. Had to switch down to 720. I don't think the 50fps is an improvement, when i need to lower the resolution.

Not the fault of the content, blame Youtube/Adobe/whoever wrote your browser/possibly yourself.

[conducteur]

Still watching now. Had to switch down further to 480. And that's low quality on a full hd monitor.

[Monkeh]

Still watching now. Had to switch down further to 480. And that's low quality on a full hd monitor.

Fix your computer, then..

[conducteur]

It's running windows 7 on a I7 quad core with 2GB on the video card, and 8 GB RAM.

[Monkeh]

It's running windows 7 on a I7 quad core with 2GB on the video card, and 8 GB RAM.

And I can successfully watch 1080p50 on a six year old laptop, so, specs are irrelevant, it's a simple enough task.

[delmadord]

It's running windows 7 on a I7 quad core with 2GB on the video card, and 8 GB RAM.

I have barely the half of your power on my machine and it runs without any problems on 1080 (Manjaro Linux x64, Chrome). I believe your problem is not in the video.

[pickle9000]

"We don't care about quality, only care about income"

It's funny because that's basically the motto of every American company ever. They only ever bother with quality if it is necessary to improve profits, and then moan because the Chinese company they paid bottom dollar did the same.

So true. I do it all the time.

One of the funniest bits ever,

Wung Hung Lo Factory really made my day. Nice one Dave!

[Supercharged]

I kinda feel sorry for the Wun-Hung-Lo guys.
But still stupidity is nothing to really feel sorry about so..

[NiHaoMike]

It's running windows 7 on a I7 quad core with 2GB on the video card, and 8 GB RAM.

All too often I see beginners buying a video card "because it has 2GB (or whatever) of RAM". In reality, the GPU itself is a lot more important. General rule of thumb is make sure the second digit is at least a 5, as anything lower is cheap junk. (A 750 is only about $100 so you won't save much going below that anyways.) 2GB is plenty if you're not running 4K, but if you are running 4K, 3-4GB is much better. I have seen GPU memory usage get almost to 2GB (with a 4K screen) when playing a video with lots of postprocessing enabled (which also takes a lot of GPU, but anything that can handle 3D gaming should handle it just fine), and get to about 2.5GB when playing a 3D game, though I downshift to 1080p120 for gaming as my 970 doesn't quite have the power to give a good gaming experience at 4K. (SLI is a must have for 4K gaming, and it is also noted that the memory does not add in SLI mode.)

[EvilGeniusSkis]

radhoo, would an ionizing smoke detector work for calibrating the uRads? they giv information on radation exposure on the package.

dave what about destroying some $2 multimeters with the big knife?

can you program the electric imp with a regular sd card slot on a pc? if you can't will some dunce pluging one into an sd card slot ruin it?


Is the package from "wun hung lo" a joke?

when are you going to teach Sagan to solder? when you do make a video.

[ealex]

i've got a display like the one that was totally smashed:
it's a panaplex plasma display, 320x256 pixels - very nice bright orange with a long persistence
the interface is synchronous, 1 bit: hsync, vsync, pixel clock, data and a active low chip enable
if i remember correctly the pixel clock is ~ 12.5MHz
the timing is very critical: if the pixel clock is not perfect it will show garbage / overdrive the pixels; if the hsync / vsync timing is off by 1 tick then it will not display a thing

i think i lost the fpga code to drive it, if anyone needs it, i'll measure the timing again

[SL4P]

And I can successfully watch 1080p50 on a six year old laptop, so, specs are irrelevant, it's a simple enough task.

Bravo!! - and that is exactly the point that should be made in this thread.
How the user configures his player has very little to do with how the producer decided to shoot his material.  A perfect example of 'caveat emptor.

""It left me fine.  FedEx dropped it.  It arrived broken"" - is not Dave's problem!

[moemoe]

All too often I see beginners buying a video card "because it has 2GB (or whatever) of RAM". In reality, the GPU itself is a lot more important.

But for watching video it's completely irrelevant, 1080p50 and p60 runs without any problems in chrome on my >4 year old mobile i7 with integrated graphics.

But I don't see any advantage in p50, especially if half the content must be interpolated from 60Hz.