Uploading At 720/60

[SwissMotard]

You can edit at any resolution and frame rate you want if you use a decent editor and video proxies.

This does not affect you final rendered settings.

 

[Lurch]

Should be OK buddy, just give it a bit more time to render, maybe start off with a shorter topic, say 5 minutes, see how the computer deals with it.

 

[GixxersShadow]

1080@60 all day....lol

 

[biker1968]

Sure thing, I just noticed my camera can also record at 1080/60 so I think I'll also do some tests at that resolution. I'll put up an unlisted test like you said, maybe it can help some other people as well.

I did some tests with my gopro around file sizes with 1080/60 and 720/60 and surprisingly the file size is the same. Found out that the go pro will aggressively compress more when set to 1080/60 which is why the file size stays the same overall. Does not affect the camera or image quality but it does demand a lot more from your editing PC and it has to un compress a lot faster to keep a smooth video playing. Just a heads up as I had to upgrade my laptop so I could continue at 1080/60 editing.....

 

[SwissMotard]

Don't waste your money upgrading as editing a 1080p60 file takes the same amount of power as editing a 480p30 file if you just use video proxies.

Pre-rendering and post-rendering take longer but the editing process and performance will be identical.

Which GoPro do you use, as all of mine nearly (but not quite) double the file size when I double the frame rate. Are you sure you're not going from 1080p30 to 720p 60?

 

[biker1968]

I have the hero 3+ black edition . Definately no change in size, each file remains at around 3 gig for 17 mins of footage. Thought it was strange myself and so looked into it...found answer buried in the go pro tips website.
Basically the camera knows to use a higher compression rate when hi res options are selected.
Don't know if it can create the proxy files though or whether cyberlink powerdirector can..this is what I use for editing.....

 

[SwissMotard]

That's seriously strange!

I'm looking at 2 files right now from my Hero 3+ Black and the 108p60 is almost twice as large as the 1080p30!

 

[Lurch]

Would Protune or any other settings have a bearing? Guessing here, not really touched a grown ups Go Pro

 

[SwissMotard]

The bitrates GoPro quote (45mbps for the 3+ Black, 60mbps for the 4 Black) are the ProTune settings, you're right that the non-protune will be slightly less but GoPro don't quote those.

 

[Lurch]

They'll just quote for the maximum bitrate of the camera as a fast SD card can handle slow data rates, but not vice-versa.

Intrigued to know how much it compresses or doesn't for any given setting though. Drift quote on their "how many hours recording on a 32GB card" chart that 720/60 uses a similar amount of space as 1080/30.

 

[SwissMotard]

Yeah they just give the maximum bitrate to ensure compatibility.

 

[SwissMotard]

Oops can't edit my post for some weird reason.

GoPro do highlight the hours you can fit on a 64GB card (basically bitrates for the laymen), which does indeed prove a 1080p30 file should be almost half the size of a 1080p60 and definitely not exactly the same:
http://gopro.com/support/articles/hero3plus-recording-time-in-each-video-setting

 

[OlliePrice]

I wouldn't worry, I record at 720 30, and post at 25fps. If I did anything sporty, I would focus on making it smooth

 

[SwissMotard]

Why do you export at 25 when you record at 30? That causes some weird frame skips in the final video as every sixth frame is skipped.

 

[biker1968]

That's seriously strange!

I'm looking at 2 files right now from my Hero 3+ Black and the 108p60 is almost twice as large as the 1080p30!

Sorry, I was being a twat... just doubled checked and the there is a difference. I was looking at the file sizes created which where always 3.66gig, however now I have looked again I can see that the 1080/60 is 17 mins long, whilst the 720/60 is actually 26 mins long....

 

[Lurch]

Makes more sense now, otherwise that's some compression!

 

[biker1968]

Sorry, I was being a twat... just doubled checked and the there is a difference. I was looking at the file sizes created which where always 3.66gig, however now I have looked again I can see that the 1080/60 is 17 mins long, whilst the 720/60 is actually 26 mins long....

This does of course mean that the in terms of time you do not get double the amount within the same file size... and to get more time into the same file size then the compression ratio has increased.... by my reasoning anyway

 

[SwissMotard]

You're always going to get a better filesize per frame with 60fps as less has changed between each frame compared to 30fps.

the only way this won't happen is if you don't use a compression method that compares each frame to the previous and next frames.

 

[biker1968]

Damn... never even thought about it like that...You Da Man when it comes to this shit.

 

[SwissMotard]

Looks like I'm finally useful for something