8mm Forum: Any software that can digitally divide movie files to become 24 fps?

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Topic: Any software that can digitally divide movie files to become 24 fps?

Winbert Hutahaean
Film God

Posts: 5468
From: Nouméa, New Caledonia
Registered: Jun 2003

posted July 18, 2017 06:00 PM

Dear all,

I need to know the name of software that can digitally divide a movie files to become 24 fps (and 18 fps) so we can visually see frame by frame images as we have on actual celluloid reels.

Thanksm

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Winbert

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted July 18, 2017 08:46 PM

Hi Winbert...I'm not totally clear on your question. Programs like Virtual Dub (Free), Adobe Premiere Pro, Adobe After Effects, Sony Vegas are just a few of the editors capable of altering the frames per second of a digital video file. The individual frames can be seen one at a time by just pressing a key to advance thru the individual frames. If you want to create individual still pictures of each frame... I have used Virtual Dub and Adobe Premiere Pro (I believe later versions of Photoshop, but have used it) to export video files to an image sequence. This process takes every frame in the file and saves it as a still image in a consecutively numbered sequence of pictures.

Here is a Youtube video (not mine). This guy is using image sequences in his telecine method. He uses a different program than I've mentioned above.

https://www.youtube.com/watch?v=sPaF3Tqauiw&t=45s

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Winbert Hutahaean
Film God

Posts: 5468
From: Nouméa, New Caledonia
Registered: Jun 2003

posted July 18, 2017 09:32 PM

Hi Janice thanks for stopping by. I knew you are an expert in this matter so I did wish you could answer my question.

So here is the thing.

For us reddubing the 8mm is the ultimate way to get the best stereo sound taken from external source such as LD or DVD. It is also a way for collectors to record foreign language prints back to their language of their choice.

The problem is for digest or mini feature we need to re-edit the digital files to get the same cut with the 8mm's version.

I found here, collectors are doing it by screening the 8mm films and captured it with a video camera (telecine). Later they edit the digital files (taken from DVD or MP4) to have the same edit with the 8mm version. In my opinion it is a long process.

I was thinking, if the digital files can be divided (break up) on 24 fps where we visually can see it on the computer screen, then we don't need to do telecine process, but just use the 8mm viewer/editor to see frame by frame of 8mm prints. So when there is a scene change in the 8mm viewer, we just find on the computer softweare, the exact same frame. Do cut and paste.

At the end we will have the same frame by frame between 8mm prints and the edited MP4, won't we?

So when we play this MP4, it will have the same edit, hence the same sound with 8mm prints.

Please correct me if I am wrong, Janice.

cheers,

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Winbert

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted July 18, 2017 11:27 PM

quote:
I was thinking, if the digital files can be divided (break up) on 24 fps where we visually can see it on the computer screen...

What do you mean by "break up?" How do you see that looking on a computer screen? Getting the DVD files converted to an image sequence at 24fps is very doable, but do you want some kind of flag/marker...time code...or naming convention to identify each group of 24 images in the linear sequence? Pretty sure this would take some scripting to accomplish this.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Winbert Hutahaean
Film God

Posts: 5468
From: Nouméa, New Caledonia
Registered: Jun 2003

posted July 19, 2017 12:13 AM

Hi Janice,

Perhaps with picture below that can explain better.

That is a screen shot from Sony Vegas software that I took from internet.

I am looking a software that can show a visual graphic 24 fps on the portion I red circled above, is there any?

cheers,

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Winbert

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted July 19, 2017 01:07 AM

Ok... I don't use Vegas but according to this video all the frames thumbnails can be displayed, but it depends on the zoom level you have set on your timeline to see each one. Try zooming in to the frame level and see if the thumbnails are large enough to view.

https://www.youtube.com/watch?v=xxPdInewiwQ

If you want to see all the frames you will have to export to an image sequence as I described above. These images can be viewed directly from your computer file system or definitely in Photoshop or Adobe Bridge.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Winbert Hutahaean
Film God

Posts: 5468
From: Nouméa, New Caledonia
Registered: Jun 2003

posted July 19, 2017 01:16 AM

Thanks for the link Janice. I think that is what I wanted.

Just to make sure....and forgive me for my naive questions, I really don't know how is actually the digital file showing the moving pictures.

In celluloid, I understand that cells are rotated and every cell is caputred by the light creating moving images.

So, is this also applied in digital video?, that one movie file consists of thousands frames which are shown one by one just like we have in our projector?

cheers,

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Winbert

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted July 19, 2017 02:07 AM

Yes Winbert...you got it [Smile]

Digital movies are made up of frames just like film.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Winbert Hutahaean
Film God

Posts: 5468
From: Nouméa, New Caledonia
Registered: Jun 2003

posted July 19, 2017 06:56 PM

quote:
Digital movies are made up of frames just like film.

I see it now. Supposed that software can show the images by 24 fps do you think my idea wil work if I cut and paste a digital file using frame by frame in order to get the same edit with the 8mm version?

I am worried that although the digital file has the same frame by frame but the speed can be faster or slower with the 8mm version (played on a 24 fps quartz locked projector such as GS-1200). Will that be possible?

cheers,

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Winbert

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted July 19, 2017 09:33 PM

Winbert... You know what you are trying to do better than anyone. I can't tell you whether it will work or not. I can only tell you what the software can do. You can change the fps of a digital file to 24fps and convert each frame to a single image. What you do from there is up to you in establishing your proof of concept.

Good Luck.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Winbert Hutahaean
Film God

Posts: 5468
From: Nouméa, New Caledonia
Registered: Jun 2003

posted July 20, 2017 01:15 AM

Again thanks Janice.

Found this article:

https://documentation.apple.com/en/cinematools/usermanual/index.html#chapter=2%26section=5%26tasks=true

After reading this article, I guess there will be synchronize problem due to NTSC (29.97 fps) or PAL (25 fps) while our 8mm films are 24 fps.

My last question, is this NTSC or PAL system still matter in this digital files? I never knew my computer play on NTSC or PAL mode.

cheers,

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Winbert

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted July 20, 2017 02:51 AM

Once you have ripped the files off the DVD it doesn't matter if the DVD was NTSC or PAL. You will be changing the fps to 24 anyway.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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