Tagged with 25fps - Personal View Talks

Avid / Edius GH2 workflow 25pfs wraped in 50i (also works for Canon and other formats)

fm4fan — Sat, 01 Mar 2014 12:43:50 +0000

Hi,

I just post a few workflow ideas for Avid and also Edius to get around some common problems.

Some cameras (eg GH2) wrap the 1080/25p in a 50i (25fps) container or do other weird stuff like show you a very strange framerate.

Workflow Avid MC6 or higher:

create a 1080/25p project
AMA link your card (don't rename your files otherwise your AMA Link doesn't work)
In your bin enable the "field motion" column/heading and with a click on the line(s) Avid interprets the file(s) as progressive or progressive strobe.
Transcode to Avid DNX and hope for the best because Avid struggles a lot with GH2 files (Avid is king with pro files but h.264 isn't pro for him).
When you run into transcode troubles you have to transcode the files that didn't work with a 3rd party program like usually Squared5 (doesn't like my GH2 files too), so like Adobe media encoder.

if you have files with weird frame rates

Open the Console (Under Tools) and type eg. "SetAMAQTForcedFrameRate true 25.00" and hit enter
some message appears and your linked AMA's are now 25fps (or whatever you typed in)
you have to type in the commando every time you start your Avid (doesn't remember it)
to stop type "SetAMAQTForcedFrameRate false 0"

If you have different framerates / resolutions you can mix and match them in Avid

work in another project on a different framerate / resolution
open your main project
import the bin(s) from the other project(s)
Avid will handle everything

And because I'm on field in the middle of nowhere with a small laptop I take this approach to check my files, make a rough cut or transcribe an interview.

Workflow Edius: Basically you don't have to think about anything

drag in whatever you like
change some files to another field motion
mix other framerates/formats,...

I don't love Edius, but you have to love some features of it like working with everything native on a small laptop or ...

hope this helps ciao, Hans-Peter

Olympus PEN E-P3, shooting at 25 fps: is there a way???

Da_Real_Pope — Tue, 04 Jun 2013 09:56:11 +0000

Hi everyone! I've been roaming the web for a while before coming here to ask this: is there ANY way to make my PEN E-P3 shoot at 25 fps, instead of 29,97? I asked Olympus too, but they just said: the camera can't, bye. (so professional...) I wondered if there was any chance to find a "hacked" firmware letting me set it that way, and wandering around stumbled couple of times in Vitaliy's name. :D I hope this is an "allowed" topic and, if the case, anybody could help me!

Thanks anyone and everyone! ;)

PS. any hack I could find about Olympuses was for near EVERY camera but the E-P3 -.-

GH2 MJPEG 1080p 25 fps.

Athiril — Mon, 12 Dec 2011 07:00:37 +0000

Odd. Last time I tried the Change fps function for MJPEG it just fubar'ed all the time.

Now I went to stock settings (original GH2) for MJPEG with 25 fps, worked. So loaded the LPOWELL 100mbps/night 1080p settings, added 25 fps changed, works on my GH2. I'm not sure if it's merely dropping 5 frames out of every second (don't think it is). But if you shoot 1/25th, not sure if that it'd matter?

I'll try to examine it at some point with some linear motion at fixed speed, and look for 'jumps' in space.

My test file is reported as 75,697 kbps. Or 74 mbps. Which would be 88.7 mbps @ 30 fps, at the same average size/compression per frame. Available recording time is reported as 3m 12s. Recording on a Transcend 32gb class 10.

Test file was shot at ISO 2500, probably a stop underexposed still by the looks, just messing around in indoor light.

I'll do some slow panning on a monopod tomorrow with shutters @ and greater than 1/30th, and upload that.

Also I have gotten sizes a bit above 1080p working fine before too, which is useful I think for stabilising software if (such as deshaker) if you can shooter slightly wider than you want/need, so you don't have to blow up (or blow up as much) back to 1080p frame size for a 1080p output workflow. Combined with 25 fps would be great.