Juddery video post edit.
Discussion
Working on a project in Final Cut Pro using footage from Go-Pro, Mavic 2 Pro and a Sony 4k camcorder. All recording at 25fps. Editing in 4k using proxy media.
The footage out of the cameras is fine and smooth as it is during the edit process. But when I export into Vimeo or as a file on the hard drive, I'm loosing some of the smoothness - not a lot but is noticeable. I've tried exporting to different resolutions and it's still there.
Loaded the work-in-progress here - the issue is most noticeable in the first five seconds and then towards the end: https://vimeo.com/435297765
Done a bit of searching and most of the comments seem to suggest minimising panning!! I'm thinking it's something to do with bit-rate?
Any help gratefully received.
The footage out of the cameras is fine and smooth as it is during the edit process. But when I export into Vimeo or as a file on the hard drive, I'm loosing some of the smoothness - not a lot but is noticeable. I've tried exporting to different resolutions and it's still there.
Loaded the work-in-progress here - the issue is most noticeable in the first five seconds and then towards the end: https://vimeo.com/435297765
Done a bit of searching and most of the comments seem to suggest minimising panning!! I'm thinking it's something to do with bit-rate?
Any help gratefully received.
singlecoil said:
I'm not really seeing the problem there. Nothing that you don't see every day on YouTube etc.
I think the transitions are a bit abrupt, and something seems to have gone wrong with the colour towards the end. The music's a teeny bit loud too.
All the above IMO.
Strange - last night when I exported it, it looked worse than it does today! Maybe a lag thing with Vimeo.I think the transitions are a bit abrupt, and something seems to have gone wrong with the colour towards the end. The music's a teeny bit loud too.
All the above IMO.
And yeah - points noted - just a work in progress
Looks fine to me - theres a certain speed of movement at 25fps and 24 fps, that doesn't really work well.
Really, 24 / 25 isn't quite enough for super smooth movement, at a certain speed. They became standards because it was the lowest possible speed for persistence of vision to still work. Any slower, and everything judders. Using higher frame rates for film, or using more fps for TV, would both have been more costly, so 24 for film was settled on, and 25 for TV (in this country at least).
At film school, they actually teach you to not pan or track at certain speeds. Fast is fine, slow is fine, but at a certain speed, if you're not tracking a subject, then it can have a little judder to it.
- Some of your drone shots fall into this judder speed zone to me, and have a little juddery cadence to them. - not too bad though, quite watchable.
I'd consider slowing down your pans from the drone slightly, and slowing down the speed of the top down birds eye shots, next time.
Really, 24 / 25 isn't quite enough for super smooth movement, at a certain speed. They became standards because it was the lowest possible speed for persistence of vision to still work. Any slower, and everything judders. Using higher frame rates for film, or using more fps for TV, would both have been more costly, so 24 for film was settled on, and 25 for TV (in this country at least).
At film school, they actually teach you to not pan or track at certain speeds. Fast is fine, slow is fine, but at a certain speed, if you're not tracking a subject, then it can have a little judder to it.
- Some of your drone shots fall into this judder speed zone to me, and have a little juddery cadence to them. - not too bad though, quite watchable.
I'd consider slowing down your pans from the drone slightly, and slowing down the speed of the top down birds eye shots, next time.
Fordo said:
Looks fine to me - theres a certain speed of movement at 25fps and 24 fps, that doesn't really work well.
Really, 24 / 25 isn't quite enough for super smooth movement, at a certain speed. They became standards because it was the lowest possible speed for persistence of vision to still work. Any slower, and everything judders. Using higher frame rates for film, or using more fps for TV, would both have been more costly, so 24 for film was settled on, and 25 for TV (in this country at least).
At film school, they actually teach you to not pan or track at certain speeds. Fast is fine, slow is fine, but at a certain speed, if you're not tracking a subject, then it can have a little judder to it.
- Some of your drone shots fall into this judder speed zone to me, and have a little juddery cadence to them. - not too bad though, quite watchable.
I'd consider slowing down your pans from the drone slightly, and slowing down the speed of the top down birds eye shots, next time.
Thanks Fordo. Really, 24 / 25 isn't quite enough for super smooth movement, at a certain speed. They became standards because it was the lowest possible speed for persistence of vision to still work. Any slower, and everything judders. Using higher frame rates for film, or using more fps for TV, would both have been more costly, so 24 for film was settled on, and 25 for TV (in this country at least).
At film school, they actually teach you to not pan or track at certain speeds. Fast is fine, slow is fine, but at a certain speed, if you're not tracking a subject, then it can have a little judder to it.
- Some of your drone shots fall into this judder speed zone to me, and have a little juddery cadence to them. - not too bad though, quite watchable.
I'd consider slowing down your pans from the drone slightly, and slowing down the speed of the top down birds eye shots, next time.
That all makes sense. The drone is a new thing for me so just learning the ropes on that.
I’ve looked into the time lapse at the beginning and seems this may be a hardware issue. I mounted it on a cheap clock-work pan base; just wind it up, set the time you want it to run and let it go. Problem is that it ‘clicks’ round rather pans smoothly. If you’re lucky, the clicks correspond to the shutter but it seems it is pure luck.
joshleb said:
I believe video upload sites get a minimal video up and playing first and then optimise it over the next couple of hours.
Could by why Vimeo looks better today?
Yeah – seems a lot better today!Could by why Vimeo looks better today?
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