Cineform and 4k

[Offbeat Bryce Productions]

Hello is the built in Cineform codec in Premiere able to export in true 2K or 4k? I can't seem to find a setting for this. Does this standard 10 bit or 12 bit offer 2K or 4K automatically?

thanks,

Bryce

[Rameez_Khan]

Hi Bryce,

I understand that you want to know the resolution and standard GoPro Cineform supports on export.

Please refer to this article: GoPro CineForm codec support in Premiere Pro

Thanks,

Rameez

[excited_Genie16B8 · Accepted solution]

The Cineform export preset will match your sequence settings by default.

[Offbeat Bryce Productions]

Oh okay. Now here is a question. I've been experimenting more with transcoding vs proxy and I'm just curious what happens if my transcoded footage is too big to store on an SSD? Like my current documentary as tested with transcodes is 1TB in total and I'm not even done filming yet. However the native footage in .MP4 .Mts etc in total is 400GB so far. I'm not filming all of it as it's a project I've been hired to edit with little shooting myself. If it's a mix of formats wouldn't it be best to transcode to cinfeform?

[excited_Genie16B8]

Editing requires lots of space.  If you need more, get it.

I prefer proxies to transcodes.  Takes up less space, edits smooth as butter, retains the quality of the original media.  There's no down side to Cineform proxies.

[Offbeat Bryce Productions]

Well here is my issue. the footage I have is a non stop video recording. The filmmaker didn't stop the camera in between takes. I want to trim the mp4 files and retain the quality without huge file sizes. Can I just export a .mp4 again with the quality set on high?

[excited_Genie16B8]

My preference would still be to use proxies here.  I just pull the good parts from the long clip.

There are many ways to get the job done, though. Your MP4 idea would also work.

[Offbeat Bryce Productions]

I did a test where I Exported the native .mp4 clip as a new .mp4 clip with the H264 setting with Maximum Bitrate and Target Bitrate at both 30. I then put this new clip above the original native .mp4 clip and selected difference in blending modes and there is like zero quality difference.

I have attached a screenshot to show you what I'm seeing when I go to blend mode and select difference.

Do you think my results are okay to do this moving forward? I understand it's not best to keep exporting with h264 as the quality gets worse and worse but what do you think about just doing this once before editing if I need to?

[Offbeat Bryce Productions]

Call me crazy, but I also discovered if I create new clips rather than subclips I can tag them by keyword. If I don't create new clips and just use subclips the sublicp and the original clip have the same keywords which I don't want

[excited_Genie16B8]

New clips it is, then.

[Offbeat Bryce Productions]

Just discovered that if you use Windows 10 movies and tv program you can trim the video and save it as another without reencoding the video. I checked using a program that shows bitrate etc of the native file and it's the same as the trimmed file.

Also if you are on a Mac VLC player lets you trim to via the record button. You have to do it in real time with VLC player but just hit the record button and then press stop when you want to stop and it will save what you recorded as another video of the same format in the video folder on the mac.

With .mts file it save it as a .ts file instead but it's the same quality.

When doing this I saved a good 2GB on one file by trimming it.

[Offbeat Bryce Productions]

You can also do it in media encoder by using the target and maximum bitrate sliders and if you put both sliders up to 50 or so it's equivalent to the trimming in the programs.

That's what I'm doing in Prelude now is transcoding media to .mp4 with the target and maximum bitrate sliders up to 50 and it's coming out perfectly fine. Then after I edit I just export the final video as a cineform quality 3 file. Comes out fine.

If I know I need to encode multiple times then I'll just render and replace a clip as cineform but usually I'm set with the mp4 files.