Author Topic: Full-resolution LiveView: 5796x3870 at 5fps  (Read 4933 times)

denishogan

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Full-resolution LiveView: 5796x3870 at 5fps
« on: September 01, 2017, 09:23:03 AM »
 Hi All

I have been using Full-resolution LiveView: 5796x3870 at 7.4 fps (128ms rolling shutter) - continuous*) at 5 FPS! with success to capture still macro.

Given the low frame rate (5fps) has anyone used this , if so what is the recommend shutter speed for such slow rate under ML for a stationary subject/object. I see that "they" state to double the shutter speed of the FPS. which means if its 5fps then my speed should be 1/10. Given the subject is stationery and there is no movement is there any advantage of increasing the shutter speed. I have done some tests and cannot tell the difference other then loss of light.

cheers
Denis

muanthang

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #1 on: September 01, 2017, 09:54:06 AM »
could  you   upload  the  video  in full resolution  if  possible

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #2 on: September 01, 2017, 10:04:36 AM »
Hi muanthang,

Apologies, i forgot to mention that I am using a 5x or 10x microscope at the end of my camera and there the video is very blur except for parts of the "slice" that are in focus ( shallow dof) as I am moving very slowly towards the subject matter on a rail. I then extract the DNGs from the video and then stack them. I can upload an image of the stacked image when I get home tonight.

cheers
Denis

Danne

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #3 on: September 01, 2017, 10:17:33 AM »
Can you upload a sample MLV? Would like to check it. You can use:
Code: [Select]
mlv_dump -f 5 Output.MLV Input.MLVOr create a sample package in Switch from (m) mlv_dump menu.

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #4 on: September 01, 2017, 10:23:19 AM »
Hi Danne

Thanks for your help with your software before that got me going.

Yes I will upload it when I get home. There seem to be lots of haze as well. I will show a pic of my setup as well. My continuous light is behind the lens and therefore no light in going into the lens.

cheers
Denis

Danne

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #5 on: September 01, 2017, 10:25:31 AM »
No worries. I am also interested in the MLV sample itself  :)
Are you developing those files in Switch by the way?

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #6 on: September 01, 2017, 10:39:54 AM »
Danne

Not sure what Switch is? I just use your programs to extract DNGS from MLV, then I put all dngs into Helicon to stack them. Then I save as TIF and process the single stacked image in Adobe Camera Raw, then into CC

What is the purpose and benefit/s  of Switch?

cheers
Denis

Danne

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #7 on: September 01, 2017, 10:46:47 AM »
It's my mac workflow
http://www.magiclantern.fm/forum/index.php?topic=15108.0
Maybe you're on windows, can't remember :)

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #8 on: September 01, 2017, 11:00:13 AM »
  :) Yes I am using windows. Can I simulate your workflow in  Windows.

Can I please see likes to your videos?

I am going home now. Just finished work.
 :

Danne

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #9 on: September 01, 2017, 11:07:00 AM »
I started porting the scripts to linux subsystem on windows 10. Most of it kind of works but needs some last touchups.

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #10 on: September 01, 2017, 01:05:16 PM »
Hi Danne

The MLV is going to take hours to upload. In the meantime here are some screen captures of the stacked files. NO EDIT DONE

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #11 on: September 01, 2017, 01:07:41 PM »
Sorry Danne, did not finish my previous  post. Cannot upload my screen captures, as its stating BAD GATEWAY

Danne

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #12 on: September 01, 2017, 01:14:13 PM »
Try shorten your MLV file:
Code: [Select]
mlv_dump -f 5 Output.MLV Input.MLV

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #13 on: September 01, 2017, 01:43:15 PM »
does not work. tried at cmd , mlv_dump -f 5 M31-1735-Copy.MLV M31-1735-Copy.MLV. What am I doing wrong

Mode of operation:
   - Input MLV file: 'M31-1735-Copy.MLV'
   - Verify file structure
File M31-1735-Copy.MLV opened
File M31-1735-Copy.M00 not existing.
Processing...
Unknown Block: VERS, skipping
Unknown Block: VERS, skipping
Reached end of chunk 1/1 after 423 blocks
Processed 412 video frames
Done

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #14 on: September 01, 2017, 01:48:45 PM »
There is no *.M00 files in the folder

These are some screen captures with no edit or noise reduction

If you check the left hand corner there is a significant issue about 20-30% that is corrupted.











some samples , What I see in Bridge of the extracted DNGS



Danne

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #15 on: September 01, 2017, 02:10:07 PM »
Sorry, should be this:
Code: [Select]
mlv_dump -f 5 -o Output.MLV Input.MLV
Amazing shot example.

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #16 on: September 01, 2017, 02:17:44 PM »
Still an issue, I am using MLV Dumper v1.0. Is the syntax I wrote correct "mlv_dump -f 5 -o M31-1735-Copy.MLV M31-1735-Copy.MLV"


IN CMD
C:\Users\Denis\Desktop\___RAWTODNG TEST\___WORK AREA 6\ORIGINALS>mlv_dump -f 5 -o M31-1735-Copy.MLV M31-1735-Copy.MLV

 MLV Dumper v1.0
-----------------

Mode of operation:
   - Input MLV file: 'M31-1735-Copy.MLV'
   - Rewrite MLV
   - Output into 'M31-1735-Copy.MLV'
File M31-1735-Copy.MLV opened
File M31-1735-Copy.M00 not existing.
Processing...
Reached end of chunk 1/1 after 0 blocks
Processed 0 video frames
[ERROR] Failed to rewrite header in .MLV file
Done

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #17 on: September 01, 2017, 02:20:59 PM »
hold on, something is happening

Danne

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #18 on: September 01, 2017, 02:27:40 PM »
You mustn´t use the same name for input and output. It might erase your file even. Be careful.

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #19 on: September 01, 2017, 02:28:01 PM »
oops it was a layer8 issue, between the chair and the PC, ME !
it worked. file went from 8.2gb to 120k
will upload it now

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #20 on: September 01, 2017, 02:31:29 PM »
I accidentally deleted the MLV files for the sample captures i attached to the previous post  but this give you an idea

https://www.dropbox.com/s/fwwzy8u6pu8bw1l/M31-1735Copy22.MLV?dl=0

cheers

Danne

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #21 on: September 01, 2017, 02:36:48 PM »
Sorry to hear about the footage loss :(. It's the naming. Should be a safeguard for this in mlv_dump.

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #22 on: September 01, 2017, 02:39:41 PM »
is that link ok

denishogan

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #23 on: September 01, 2017, 02:43:13 PM »
I am grateful for your help and time, very kind of you. Can I improve on  the quality of those DNG's somehow, may not be possible

Danne

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Re: Full-resolution LiveView: 5796x3870 at 5fps
« Reply #24 on: September 01, 2017, 02:44:06 PM »
Yes, thanks a lot :).
I notified g3gg0 about this fatal erasing error in mlv_dump. Hopefully he can put in a safeguard of some kind.
Any dng corruption examples I think could be of interest for a1ex maybe. I have very little knowledge of how to control what´s going on inside the camera.