#apertus IRC Channel Logs

off to bed now ... have a good one everyone!

morning folks!

Hello everyone!

heia?

oh I see

What I know (if I am right) for finding bandwidth I'd need to know these three things: The pixel depth (bytes/pixel),

and The number of taps

I'll probably write an article about what I understood till now

and yes, the frame size calculation is correct

like?

For example the tap is considered 1 if pixels per clock cycle is 1, 2 for when there are 2 pixels per clock cycle and so on..

okay, that's something relevant/specific to camera link

I see, so I'll probably don't take that into consideration then?

you are dealing with memory access, specifically DDR3 memory

yes, also by calculating bandwidth and understanding if there's buffer overflow it might help?

buffer overflow?

what I read is that if FIFO required for one frame is greater than the on-board memory then we will experience buffer overflow

well, our FIFOs are all smaller than the on board memory ;-)

Hello supragya!

okay, got it :)

Bertl, with a quick look can you verify is QTFF is something we should not go forward with? [https://developer.apple.com/library/content/documentation/QuickTime/QTFF/QTFFPreface/qtffPreface.html]

nmdis1999: for example, copying the entire frame to a different memory location is not very efficient

supragya: IIRC, QuickTime is not free (i.e. the license is quite restrictive)

that's what I thought, says it's an extention to MP4 so I asked

:) yaaay

Going out for dinner. Have a great day everyone! :D

TofuLynx: hi

Later this night will be the "Serenata" on my University

Seems like your code is strange for OC is it?

yeah it is, I have to restructure it

serenata? more of ball?

Every year, the university has some sort of university student week

it's a tradition

And Serenata is the first celebration

*spelling

which is a feel of missing something or someone

yeah

farewell?

nice... have fun... or sad... whatever.. just enjoy :)

thanks

you can see a glimpse of it there

See you guys later! :)

https://developer.apple.com/softwarelicensing/agreements/quicktime.php

or here: https://developer.apple.com/softwarelicensing/agreements/pdf/qt_file_format.pdf

for example, point 2.2 seems pretty bad to me :)

or 2.4 FWIW

yes, if we merge video stream and metadata in post

then i would gladly send a floppy disk to apple

sorry, forgot to take genius into "..."

in general it is not worth bothering

i would handle it like ARRI with ARRIRAW and get the data out in our format, with according clean lib

so you are happy if you are handed with lib? Only a lack of strong contendor would ask you to go that far

if a lib is proprietary, and API provided, does that allow inclusion in the project?

mov/mp4 can handle off-file data, so make a BLOB and produce a MOV with the metadata only (or paste the metadata after the blob and you are saved from remuxing)

and it pretty much handles all the issues with various time/frame/data mapping

Bertl, what are the possible solutions, which are not that difficult for first tets?

it allows you to create a mov wrapper on proprietary (custom) blobs

making your format clearly described wont help you to pull it in fcpx/premiere :)

so its proprietary until its compliant to any existing standard

there are many ways to let people work with our stuff, but if apple is restrictive, then we should avoid to generate the files in the camera

BAndiT1983: solutions for what?

USB, ethernet, SD card

RAW12?

even if it's rather low, just a constant output would be nice

off for a nap ... bbl

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