Messages

+1 for windows!

Wrong! Kit lenses are digitally controlled in steps for aperture values. So you will end up in jumpy light intensities while zooming! Sorry but this is the hard reality...

Hello,

i have ML Raw DNG Sequence imported as 24fps in After Effects.
What is the best/easiest way to get double framerates using twixor?
Output should be 48fps.

thank you

It largely depends on the kind of motion and on the scene composition you are filming. There is not a unique set of settings for all the videos.

However, a little advice: twitxor and other interpolation methods are to be carefully used in a well controlled and pre-enginered filming environment, and only for good slowdowns and super-slow-motion very short sequences. I experimented a lot fiddling days with all the settings: there is no way to use it for interpolating normal footage: the results are always vomiting, to say least ! Go for upsizing resolution, instead: it works 1000 times better than interpolating !

haha, thanks man!

So this one?

Exactly  ! Then, download the modules (the very next download, just right under it) and follow instructions, so you can choose what build works better for your purpose (the "tragic lantern" or the "magic lantern" one) 

Are the latest builds the ones on the first page of this thread? Which one do people seem to be having the most luck with?

[1] Yes
[2] The last... obvious !  ;-)

the difference is seeing a jump every second and not seeing it by interpolating ONE frame, that is 1/24 of a second, i dont see where is the huge loss of quality and the dreaming, here... sincerely...

just because i need to interpolate the full video. with quality degradation for all the frames. for example, if i want to film in full hd on 550d i need to shoot at 4fps! unviewable. also interpolating 4fps to 24 fps is unviewable. instead, if i shoot full hd with skipping frames, i need to interpolate one frame every 32 frames or so, so it's highly feasible! but i need to know wherKe to interpolate in post.

are you really reading, or only joking? the jumps points will be interpolated! if i want jumping there is no need for my present request! i can put a wikipedia link to the word 'interpolation' if you need it. let me kbow.

You must buy a constant aperture zoom lens... very expensive! ;-)

It's better a movie with only some frames interpolated than a lower fps movie fully interpolated

For everyone interested, like me, to film RAW with skipping frames allowed (for higher resolution sake), and then interpolate the skipped frames in post, there is no clue to see where are the skipped frames. I dunno if the problem is "raw2dng.exe" extractor or the raw recording mechanism, but there is no trace about the skipped frames. It can be implemented as a jumped DNG numbering, or even a 0 (zero) bytes DNG, but something must be done in order to apply a post intervention. Many thanks !

+1 ! Quite necessary!

Do there is a postprocessing solution that takes a ml raw video file, extract the dng files and fills the dropped frames automatically with twixtor ?

when did you buy it?

One year ago

Do someone knows about a workflow where we use a resolution/fps pair that provoke some dropped frames, then, in post production, an automatic method finds the dropped frames and interpolates them by feeding twixtor ? It would be very nice and useful ! 

What is the advantage of using raw video vs photo mode with ml light trigger ? Photo mode have more resolution and can be raw. If you want to capture a lightning movie you should use a pre-buffer not to lose the very first instants, so a circular self-deleting buffer all-time active, right?

[Ring-buffering option]

Updated October 20th by Renato for a quick how to guide:

Two versions available, one with ring-buffering option (buf_raw.mo + buf_bolt.mo)  and one without ring buffer (bolt_raw.mo).  The ring-buffering option allows to record more frames before and after the bolt while  the bolt_raw.mo only record one or a few frames after the bolt.  Also there are some compatibility issues for the ring-buffering options as noted below.
-----------------------------
Ring-buffering option can be used with cameras that have a CF card.   Tested cameras: 5D3 (works best), 7D with Tragic lantern for fps override.
Raw Video: https://bitbucket.org/mk11174/magic-lantern/downloads/buf_raw.mo  (This is an older raw_rec.mo so do not load current raw_rec.mo at the same time)
Bolt Trigger: https://bitbucket.org/mk11174/magic-lantern/downloads/buf_bolt.mo
Copy these modules to the modules directory. 
Load the modules, camera in M mode, camera in video mode, enable Bolt Trigger RAW video and Bolt trigger Pre Buf modules located on Movie tab.  Set fps override to 15 with Low light option i.e  fps=14.985.  When you enable Bolt trigger the shutter speed should drop to 1/16, if this does not happen you will get more damaged frames.
For 5D3 I change the default  setup of Bolt trigger to:  Post-bolt frame count to 50, Abs trigger enabled ON, Rel: trigger enable OFF
For 7D leave the default settings.
Set your ISO to 100 and play these settings until you think you understand how this works.
Press Record button and the ring buffer will fill up but no recording (red led) will begin until the trigger detects a flash or light.  Test this with a flash or a bright light (on-off). When finished recording press the stop button (recording button) and then use the RAW  video playback found in Bolt Trigger RAW video to see the results.  When all works as expected download the raw file and have a look a the frames captured.
--------------------------------
bolt_raw.mo is the second option. This works on cameras with SD and CF cards.  Tested cameras: 5D3, 5D2, 7D, 550D, 600D, maybe will work: 60D and 650D
Download: https://bitbucket.org/mk11174/magic-lantern/downloads/bolt_raw.mo
Copy this module to your module directory.
Load the module, camera in M mode, camera in video mode, enable Bolt trigger  located on Movie tab. 
Set fps override to 15 with Low light option i.e  fps=14.985. 
When you enable Bolt trigger the shutter speed should drop to 1/16, if this does not happen you will get more damaged frames.
I have only tested default settings and work.  May have to adjust  Trigger value or take Auto exposure if you do not like how it exposes.  This feature changes the f-stop to adjust the scene exposure.
Set your ISO to 100 and play these settings until you think you understand how this works.
Press Record button and BOLTS CAPTURED  should stay at zero until a flash is detected and the captured frames will be recorded (red led).  Test this with a flash or a bright light (on-off).  When finished recording press the stop button (recording button) and then use the RAW  video playback to see the results.   When all works as expected download the raw file and have a look a the frames captured.

Jump to this post for more information: http://www.magiclantern.fm/forum/index.php?topic=6303.msg55463#msg55463


Here is more info from mk11174 on how to use other features of bolt_raw.mo!!!

My favorite feature I added was Autoexposure option, not sure if it works on any other camera though, but works perfect on the 550D, this allows me to walk away and control my video cameras while the autoexposure feature adjusts the trigger line right above the graph by controlling the aperture value and I made it slow so it does not re adjust when a flash happens, only when the sky changes gradually during a storm. Without this feature you have to watch the trigger line the whole time, if you want a bolt captured your goal is to keep that trigger line right above the graph to catch even the weakest bolts and since you have to do this, you will have to keep adjusting the aperture manually to keep the graph under the trigger line. The only thing you have to remember, is I set it to react slow, so when you first set your cam up at the sky you have to give the feature a chance to settle the graph under the trigger line, once it does, then you can start recording.

If the sky has a dark cloud layer and a medium grey layer it is best to use 1 scan line because the module will see the dark clouds and will adjust brighter which is bad cause then sky will get over exposed, that is why I added ability to see scan lines so you know what the detection lines are aimed at, if you have a nice even gradient sky, and it fills your view then you can use all scan lines with no issues.

The way I have it set up now allows me to turn it on and walk away and when I come back I have many bolts to enjoy without even touching the cam. So when used correctly which will take practice in my experience, it works really well.

The timelapse is a neat feature I added to it, but not always used, I only use it when I get really cool textured skies that I know will be worth a timelapse, it just saves a frame by itself while it captures bolts, it basically just sets off a false detection every so many seconds. Post gets harder because you have to manually separate the timelapse captures from the bolt captures so you don't get uneven motioned timelapses.

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Original post by dlrpgmsvc

This thread was created for mk11174 in order to publish tests results of a module developed by gg30s. This module should start a raw video recording triggered by light and/or motion variations.

@dlrpgmsvc

i didnt overcome the limit yet!!
but my friend the electronic hardware ingeneer says the the problem is by the controller.
we will disasample the controller from the rest and take look what we can do.according to the memory bechnmark the cam is defently faster than the sd controller!

Very very good! Keep me and community informed about future developments on this! Thanks!

and the good news the 550D has more power than 21.3mbs
i will work on this!!

wow ! but how you overcome the sd controller max speed  ?  
Give us some clues ! 

Is there a way to stop live-view from shutting down automatically after few seconds because everytime I record RAW video it happens and it's pretty boring !

You must go to Canon menu and find the automatic shutdown timer, then set it to a longer timeout or disable it. I have done the same by disabling it ! Good for photo works, no good for video works !   

Can someone post raw footage in 1280*xxx at 12fps with no zoom? (The file output from camera, without any modification)
I want to make some tests with Avisynth to find best way to remove aliasing, interpolate to 24fps, and upscaling to 1080p, but I've not a fast SD card right now.

Sure ! And when you managed to sort this out, let me know (send me a pm, please!) and also the community in the dedicated RAW post-processing thread ! Many thanks in advance ! Here is a sample file 1280x768x12fps ----> https://dl.dropboxusercontent.com/u/46130896/1280x768x12fps.RAW     

Hint : Crop all the frames, first of all, before any intervention, to 1280x720, so you obtain 16:9 aspect ratio, good for 1080p that is 1920x1080 ! Take care ! 

is it possible to to go for maybe a lower bit depth? or would this reduce the number of frames you can get in one shot?  i feel even 12-bit could be amazing. I know 14 = better quality but at the same time maybe we are trying to push ability too far for the 550D

You can follow the thread here : http://www.magiclantern.fm/forum/index.php?topic=5601.msg47379#msg47379   

Here are a few of my tests.

Please, can you do again a comparison raw vs h.264 BUT with ML bitrate cranked up to maximum ? Or h.264 standard vs h.264 cranked to max with ML vs raw all in one test ! Nobody done this so far, so we can decide if raw is really Worth the work to assemble it ! Keep the comparison method you used in your previous test, also with the slanted stripe running across horizontally ! Many thanks ! 

Ha! Just as i was quoting you, in order to give You a hint about FPS override, You gave yourself the right answer. LOL
Its not possible to vary shutterspeed in normal way while using FPS override. You can choose some variation of shutterspeed in Advanced options of override: opt for low light = 360°, low jello = 180°.

Yep ! Many thanks ! I solved by setting "Hi Jello, fast Tv" ! Now I can do the experiments I want to do. If someone wants to follow me, it's good ! So:

[1] Set raw video resolution to 1920x1080, 16:9 - 1080p FullHD standard - (you can achieve this by entering 5x zoom Live View BEFORE enabling RAW video)
[2] Set override fps to 5fps (the maximum our little 550D can do at that raw resolution without loosing frames) and enable, in the same menu, "Hi Jello, fast TV"
[3] Set shutter speed to 1/300 or so... however keep it high
[4] Film... try not to pan too fast, at least to do this experiment... because too jello will ruin the video

Then, you have a quite Jumpy video, but at least the frames are not smeared down by the 1/6 sec shutter speed that you are forced to without enabling "Hi jello, fast Tv" in fps override menu. But no problem: now fire up Twixtor and interpolate up to 24fps, then sit back and render. Then... good vision of the final product !

If someone will beat me publishing his results, he is so much welcome ! 
(If it will work, I give you the permission to call it "dlrpgmsvc 550D RAW fullHD method) ! 

A very stupid question :

Testing raw video...
In Canon video mode i cannot set the shutter speed, ML bottom display says that it's fixed to 1/6 sec !
In Canon photo M mode I can set the shutter speed, ML bottom display says it's the value i'm setting, but at all effects it's overridden to 1/6 sec, and this is visible in the lv simulation and also in the playback !

Why !   

update : it's because i set fps override equal to 5fps... but why i cannot set a 1/1000 sec shutter speed with 5fps ? it should be perfectly legal...