Messages

Interesting benchs about some popular SD cards:

http://www.hjreggel.net/cardspeed/cs_sdxc.html

And buffer chunks are feeded sequencialy ?
When buffer 1 full, buffer 2 start to be feeded.. etc

As raid 0, to enhanced write speed, you can't create 2 buffers writing at the same time ?
Having 2x30MB + 2x30MB buffers feeded in the same time ?
I don't know if i am clear, perhaps it has already been explored ?
Probably cpu limitations/multitasking applies too.

There is probably a botleneck somewhere slowing down writing ops.

1%, about buffers. Has i understand, you have the ability to dim a few buffer chunks, around 30MB, and the last buffer is made of the last free memory adressable so size may vary. Right ?

You allocate buffer chunks dynamicly at the beginning just before recording ? Acording to free mem available ?
During recording, you have the hability to resize buffer chunks ?

Another dumb question:
For testing purpose, is it possible to record black & white DNGs ?
Without color data, DNGs would be smaller we could record full HD perhaps... I know it sounds silly recording RAW in W&B but, it's a test, to see how far the 6D can go in resolution...

Does "beep" sound works in the newest "raw_rec.mo -shrinkwrite" build? I have it ON - there is no sound but maybe there is some setting I missed. In some of the previous versions it was ok.

For bip sound, use
Waveform: Sine
Tome frequency: 1760 Hz

Worked like that for me.

SD cards speed description:

https://www.sdcard.org/developers/overview/bus_speed/
Sounds like 6D is UHS-1 SDR50

6D perfs

As we've seen, a good card as Sandisk Expreme pro xxGB can write at 82-3MB/s in a SD card reader.
As you discovered, the chip managing SD card I/Os in the 6D seems limited to 50MB/s (SDR50 or something)

Why in the benchmarks can't we bench at 50MB/s ? But only at 41-42MB/s max...
Is it because of CPU power ? Or ML can't free enough memory (yet) for buffers to sustain higher write speeds ?

Sensor size...
In this BMCC review, you will see compared sensor sizes btw Canon 5D/6D and Pro cinema cameras...
BMCC has a sensor 5 times smaller than 6D...

http://www.focus-numerique.com/test-1690/camescope-blackmagic-cinema-camera-sur-le-terrain-2.html
Google translate is your friend...

I'm wondering... what could be the pixel size on the BMCC !
There are also crop factor issues with those cameras due to sensor size.

I LOVE my 6D ! So bad they didn't include a damned CF card slot !
Amazing too, at the end, using BMCC or 5D/6D RAW video, you will get same workflow (speaking about PC for myself):
DNG files + audio as a wav file => imported in your fav NLE, After Effect / Premiere and so on.

Photo mode, recording 4GB on Sandisk Extreme Pro 32GB

1440x620 global draw off : 0 skipped frames
1440x620 global draw on : 0 skipped frames
1840x480 global draw off : 0 skipped frames
1840x500 global draw off : 48 skipped frames

No, exFAT 4096k clusters

Got 2 same cards Sandisk Extreme Pro 32,
1 formated FAT32
1 formated exFAT 4096k clusters

i try all tests on both but till now, the exFAT always ends first so i report only his results.

Photo mode, recording 4GB on Sandisk Extrem Pro 32GB

1440x620 global draw off : 0 skipped frames
1440x620 global draw on : 0 skipped frames

Question: when recording, speed displayed is the MB/s issued from liveview of the write speed to the card ?
In RAW video menu choice, there is an estimated write speed needed. If global draw is OFF or ON, it displays the same MB/s.
Global draw normaly only consumes CPU, no ?

How do I reproduce it?
Photo mode is slightly faster if you override FPS.

Try to record 1600x544

In some resolution tests, got an error: Footer save error

Go in ML menus, M choice, then Load modules now
Then ML Movie menu, last choice, RAW video, btn SET
Btn Q to set a width and height dipending of your SD card speed, try 1360x580 first
Quit ML menu then hit Start/stop recording as usual

Mode C2m
Photo mode: timer A 532 (-14) timer B 2005 (+49)
Video mode: the same

Mode M: same timers
Photo mode: timer A 532 timer B 2005
Video mode: timer A 532 timer B 2005

It's chinese to me
Don't want to bother, just whiling to see if it could help in devs.
If it's just a weird acting due to PAL, forget that.

Perhaps you sould try C2m in PAL to see if it's acting the same as mine ?
Diferently than M mode i mean.

Perhaps it's only a LV shooting convenience only.... showing 25p, but ML recording 30p. That's possible ? No IMO cause you are recording liveview frames... at liveview's fps.

That FPS behavior makes sense... but what is FPS in photo mode? It should show you in the override menu I guess.

Same in photo and video modes.

But i just discovered a new thing....
I make all my tests in a personnal mode C2, which is a copy of the M mode in my cam.
Both in photo & video mode, if i use liveview inside with bulb lighting, C2 and M are not acting the same at all !

In C2, liveview seems 24 or 25p, clean image, in M liveview is running at 30p (can see light waves) !
In M mode FPS override tells it's 24p but i can see the liveview is in 30p !
So... using personal modes... we wouldn't need FPS override to get real 24p ?

FPS override behaviour...

In PAL zone, we can choose btw 1920-24p IPB and 1920-25p IPB in Canon's menus.

If i set 24p, FPS override tells me:
Desired  FPS: 24 (from 24)

If i set 25p, FPS override tells me:
Desired FPS: 24 (from 25)

Naming convention idea

Yesterday, I was thinking (!):
M-jpeg exists to name a movie based on jpeg files.
We are doing raws (DNG).... ML raw video format sould be M-RAW !
Perhaps MRW because of FAT32 limited 8+3 chars...

Or you plan to package it as CinemaDNG ?
(bunch of DNG files in a dir or mutiple DNG concatened in a file + meta infos)

Excuse me and sorry for my bad English first.
I am a new 6D user and upgraded from 60D with ML.
I have tried to install the ML on my 6D many time but it is still unable to boot ML after flash 6d firmware.
I don't know which part i did wrongly.
May you professionals share the right step for installing ML on 6D?
Thank you so much!

Did you use EOSCard ?

 With raw_rec.mo - 4gProper, hack ON:

1536x600 36.8MB/s Global draw OFF, FPS override OFF: 0 skipped frames in a 4GB record
1536x640                 Global draw OFF, FPS override OFF: stopped recording
1600x580: 36.5MB/s Global draw OFF, FPS override OFF: 0 skipped frames in 4GB recording but stopped just after

in a future modif, could you add height: 620 ?

what about lv hack on vs off

It freezes LV

Testing raw_rec.mo - 4gProper: LV on, photo mode

1504x600 35.1MB/s Global draw ON, FPS override ON: 20 skipped frames in a 4GB record
1504x600 35.3MB/s Global draw ON, FPS override OFF: 16 skipped frames in a 4GB record
1504x600 35.6MB/s Global draw OFF, FPS override OFF: 0 skipped frames in a 4GB record
1504x600 35.6MB/s Global draw OFF, FPS override ON: 0 skipped frames in a 4GB record
1536x600 36.0MB/s Global draw OFF, FPS override ON: 24 skipped frames in a 4GB record
1536x600 35.9MB/s Global draw OFF, FPS override OFF: 24 skipped frames in a 4GB record
1536x580 35.6MB/s Global draw OFF, FPS override OFF: 0 skipped frames in a 4GB record
1600x580 35.6MB/s Global draw OFF, FPS override OFF: 65 skipped frames in a 4GB record
1536x580 35.6MB/s Global draw ON, FPS override OFF: 0 skipped frames in a 4GB record

In theory:
PAL - no 30P in menu, movie mode @25P, photo mode at 30P, zoom at 30P

So in RAW video section, the ML displayed fps is wrong ?
(While in recording PAL in  photo mode without fps override)

I forgot the .map !! Need to be placed with the autoexec.bin i presume.
No change with autoexec.map, same perfs.

Something happens with the 4th buffer... since it exists i would say.
Once the 3rd buffer is full, it starts skipping frames like if the 4th buffer just didn't exist... The 4th doesn't have time to blink like the others.

Testing [113] HackLV.zip
1536x600, photo mode fps overide off: 35.7MB/s: skips frames after 1273 frames

I thought this because that's the frame rate that is displayed at the bottom of the screen in the Magic Lantern "RAW video" sub-menu displays 30fps (well, 29.xxxfps),
That's why I have been using fps override

Mine displays 23.976fps WITHOUT FPS override... strange !
In Canon's menus: PAL and 1920 / 24p IPB selected in movie mode.

Okay! My camera records 30fps in Photo mode with no override so that's interesting. Mine is potentially an imported version though so who knows?

Even imported (mine came directly from Japan with a stop by London: purnimadigital.com),
i can choose btw PAL and NTSC in Canon menus. You can't ?