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Messages - jc

#1
Quote from: a1ex on September 23, 2018, 11:35:08 AM
I've got a Toshiba FlashAir (also hackable) to minimize card swapping during development, but I find it too slow and unreliable for any real use (other than maybe transferring some low-res JPEG previews to a smartphone). That may have to do with the metal enclosure and cover of the SD slot in the camera.

The built-in wifi interface is probably much faster and likely easier to program, as you no longer have to guess what picture was captured, whether it was fully saved to card or not, and so on.

@a1ex if it is the enclosure and cover of the SD slot in the camera reducing the range .. then an SD card extender would work ...
e.g. https://www.ebay.co.uk/itm/SD-card-to-SD-Card-Extension-Extender-Cable-Log-Logging-Truck-GPS-Motorbike/183442448338 or maybe https://www.alibaba.com/product-detail/SD-Male-To-SD-Female-SDHC_60751903392.html?spm=a2700.7724838.2017115.424.6f255038VfUkvq tho the latter might be a micro one ?

#2
Has there been any further looking into how the losses cr2 raw compression is applied ? Could the discovery of running the firmware in QEMU or finding a the "Eeko" core help this discovery ?
#3
Hi team

So not sure how development of Linux on canon dslr's is going but one huge problem at the moment must be any sort of IO .. Even keyboard input must be currently impossible and this I guess makes debugging tricky ?

One possible way to let IO would be to use a wifi card like so :

http://hackaday.com/2015/08/15/hacking-an-sd-slot-for-wifi/

You could then remotely save files onto the card, and the OS could check for changes and run the issues commands ? A possibility at least

Looking forward to what Linux on a dslr can eventually do !

J
#5
Hi Baldand, thanks again for your amazing app!

So i know the huge amount of work you put into lossless compressed DNG raw and its great thanks!

Is it possible also to do a 3:1 lossy raw compression too like the new blackmagic camera can do ?

My guess to how this works is the same way you can get a lossy PNG compression.. the PNG compression is lossless but the amount of compression depends on the similarities in the file... if you therefore post process the file and make quite small changes to make the file a tad more "uniform" then pass that to the lossless compressor you then get effectively a "lossy" compression.. but one where you still have the full flexibility of the raw format ...  ( maybe even a light and simple noise reduction or alias reduction option may increase the compressibility of the raw files too!)


here is some info on lossy png http://pngmini.com/lossypng.html

& here is the discussion of the 3:1 lossy raw on the blackmagic cam http://forum.blackmagicdesign.com/viewtopic.php?f=2&t=29887&p=181686

i think if you implemented this you might get a lot of shooters, not just magic lantern shooters but many others .. even time lapse photographers or other camera manufacturers that shoot dng to start using your app to view, apply look and finally lost compress raw!



Just a thought and love the app!

James
#6
Feature Requests / Re: [PICTURE STYLE] Selective color
January 26, 2014, 01:05:12 AM
Far more useful, one thing that the c100 c300 etc cameras have is a log picture style ( in this case c-log) which gives a very very flat picture style, far flatter than can usually be achieved with the picture style editor capturing almost all the dynamic range of the sensor
Could the registers be tweaked to give a look just as flat ? This could be used to give some of the quality of ml raw ( which is amazing by the way!! ) but allow the long record times due to smaller file sizes of h264, and also cameras like the 600d etc.. To shoot full dynamic range at 1080 not a very cropped in raw!

Just a thought!!
#7
Tho maybe as it goes to cine dng not normal dng that makes a difference ...
#8
Raw Magic can do it ... So it is possible ..
#9
Hi derkiki, any chance for spanned 4gb files?? Raw Magic seems to have had it for a while now, so you could ask those guys how they did it if its problematic? Best regards and keep up the good work. James
#10
Quote from: David J. Fulde on August 26, 2013, 01:08:20 PM
To the developers of this: Incredible! I would love a back button in the GUI in case you go to the wrong folder

Hi David.. yes i was looking for the same thing.. the trick is.. click on the file path at the top, just to the left of where it says "output que" ... this will take you up one folder level!

my second trick is this.. make say 4 folders named 1 to 4 ( or 1 to 8 if you have an 8 core machine etc.. ) and place a copy of "Son of Batch" in each one.. then run all 4 / 8 at the same time.. this is a hack way to make it use all cores of your machine! it will be much faster!! ( until multi processing comes where it can be downloading all the time and then have 2,4,8,12 parallel processes all doing the raw to prores conversions! )

also any updates on the development.. at the moment this is the most promising version! will be even more exciting when the version 2 format becomes stable with all the meta data ( and sound!!) .. hopefully thats very soon!!
#11
Quote from: xNiNELiVES on August 26, 2013, 03:39:43 AM
this would be an extremely useful feature. No more sync beep required!

might be quite a cool option.. you could probably use a cheep wireless, bluetooth or otherwise, to send the sync signal to the zoom.. maybe £40 / $60 per camera! and a full wirless sync solution! tho if you can, the v2 magic lantern format may fix many of these things when it arrives!
#12
Hi derkiki

haha ok in that case.. :-) i have almost no experience of realbasic & don't own a copy either! can program in most environments tho ( JS, Erlang, Objective C, some C etc.. )
Quote from: derkiki on August 16, 2013, 11:23:45 AM
Hi jc,
I use realbasic and modify raw2dng etc., so, not sure if you can work with that.

ha always the case when open sourcing code :-)
Quote from: derkiki on August 16, 2013, 11:23:45 AM
I'd also have to clean up my messy code a little.
#13
Quote from: jc on August 12, 2013, 06:51:08 PM
ok that sounds amazing! the additions so far should save me time in my workflow already! also any chance it would be put-up on github etc..? if so i could contribute a few changes myself :-) James

i reckon that the app that goes Open for converting magic lantern RAW / MLV files will become the most popular and developed! :-) J
#14
development seems to have slowed down or stopped ( for the time begin at least )

this one looks to be quite good tho.. download link on the third forum page! http://www.magiclantern.fm/forum/index.php?topic=7266.0
#15
ok that sounds amazing! the additions so far should save me time in my workflow already! also any chance it would be put-up on github etc..? if so i could contribute a few changes myself :-) James
#16
Quote from: derkiki on August 09, 2013, 05:33:38 PM
Thanks for your interest! Please try this link. I'll look into the multithread when I have time.

https://www.dropbox.com/s/kluyerg59f2c01f/Son%20of%20Batch.zip

Hi Derkiki, thanks for that link!

ok the app is quite good! defiantly showing promise!

a few errors:
1) If not logged in as administrator it says something about NillError exception, the previous one did not do this for non-admin accounts!
2) sometimes when you click a raw it says "Picture Problem" .. you have to click the same file a few times to see a preview
3) its amazing that it accepts a DNG folder, not just raw files, but when i tried one and set it to 25fps it seemed to be as if i had chosen 5 fps.. it played back at the normal rate but it was soo sllooowww .. this this a bug?

& a few suggestions:
1) the ability to see the frames is amazing, could it have a play button that would drop say 4 out of 5 frames and let you see a playback? that would be amazing
2) it took me a while to work out how to go "up a directory" once i had entered one in the file browser ( clicking the path above incase someone else wondered ) could this be given the usual ".." at the top to go up one? also i would love it if you could drag a folder into the app and it would show that one for imports!
3) any sort of basic grade options would be amazing.. even if it was a "brighten up one or two stops" or "darken up one or two stops" option..
and yes, multi processing would be amazing!! for some would make conversions up to 8 times faster! ( at the moment i am running 8 version of the same app to get the speed up with 8 queue's -- one per app obv )

amazing app .. can see this being the default one quite soon! James
#17
Quote from: Toffifee on August 09, 2013, 06:05:57 PM
There are tons before you who have requested the 5 sec audio feature.
Maybe search a little before asking for something that's already asked for.

A)My request was that the format allows separate audio length to video length, not the 5 sec feature it's self
B)My second point was that using a pre-established serialisation format would ease things greatly in the future. Assuming the needed number of float or int to string conversions per second is not beyond what the processor can do ontop of the copying work etc.. Just using json would even work just fine.. :-) J
#18
Hi derkiki

This app looks amazing so thanks, il try that new link now!


Ok great .. Parallel processing would be amazing! James


Quote from: derkiki on August 09, 2013, 05:33:38 PM
Thanks for your interest! Please try this link. I'll look into the multithread when I have time.

https://www.dropbox.com/s/kluyerg59f2c01f/Son%20of%20Batch.zip
#19
really want to try this new version.. sounds amazing!!

but.. the link http://tshit.de/Son_of_Batch_OSX-68.zip is broken as the site appears to be down? too much bandwidth from the downloads?

also do you think doing some of the conversions in parallel would speed up the conversion? when running raw2dng i run multiple copies and it seems to speed up the process ( possibly due to the multi core, or possibly because one is reading files with low cpu overhead whilst another is generating prores with low disk activity and high cpu )

keep up the great work!! J
#20
Hi g3gg0

Many thanks for your reply!

>this implies your request : audio support
Nope, not quite .. My request was to keep just the first 5 seconds for sync support, not any more. On many cameras the data rate is too high for audio .. Tho if you mean that if audio is supported in the format then the format should be able to handle just 5 seconds then yes it does ( if however the audio time is locked to the same as length as the video capture time in format v2 two then not :-) )

>this format already is extensible and is designed to be extensible
Great but not what I was trying to imply, I meant an already existing format eg Message Pack
When you design any home baked serialisation format you might think you left room for extension but it lacks "arrays in arrays" or "a kv set in a kv set" or some other essential thing that's needed later on + you can use a pre written parser for the desktop app with no need to write your own .. If it was me designing the format I would use message pack, erlang binary terms or similar binary format

>the first data field in the file is a version string.
Oh soz .. Must haves missed it looking first time :-)
#21
I was wondering the same thing ... There must be some command line options to ffmpeg and the raw converter that this app issues to convert the folder on dng's to a pro res... Just don't know / yet to work out what they are! ( in my case I used after effects )
#22
Sure this has been asked for many times, but could this format also offer the option to capture the first 5 seconds of audio only, so that just this could be used for sync purposes?

Also for the file headers, could a standard extendable format like json,XML, or better still Messagepack be used to allow all kinds of future extension ?

Also a Version opening tag would be super useful if ever a backwards incompatible change is proposed so that tools can work out what format they are decoding!
Loving the new format proposal! James
#23
sounds an amazing feature!!! so useful for HDR stills with motion in them .. and for video might be even more amazing
I can't however get any of the links to work? they say :

Error (509)
This account's public links are generating too much traffic and have been temporarily disabled!

Could the files be hosted elsewhere please?

James
#24
Has development stopped for this fantastic app?

I really hope not as it shows a lot of promis but features people were looking for include:
1) joining of multiple .r001 .r002 etc.. Files for the 5d2, 50d and others that require 4gb split files
2) a better GUI for selecting options such as if it makes a pro-res file and options for it ( as opposed to dragging in the GUI into its self with limited options )
3) some kind of preview of clips before they are converted over .. Maybe dropping frames or even B&W but this would be a huge time saver as I could know what clips are what

I think the option of a lower res prores sounds a great idea too! :-)

Also for me the pro res files come out way too dark on my 5dii, do others have this issue. Currently editing in premiere and auto levels fixes this just fine but it's an odd issue

Also will it be open sourced ? Seems that as magic lantern is an open effort the raw converter tools would benefit from being so too!

Anyway love to see some more progress ! James
#25
i asked similar here .. :-)
http://www.magiclantern.fm/forum/index.php?topic=6666.0
what mac do you have a mac pro 08 ?