1080p 60 fps video

[John Rofrano]

[Wayne Waag] “Having said that, I bought into the same arguments for using 30P by the “professional” videographers I hired for my daughter’s wedding. Later, I regretted not insisting on having them film in 60P”

This is why I shoot 60i. It gives better temporal resolution and is compatible with 100% of playback devices. 30p does have a different look than either 60i or 60p but some people like it because it isn’t as jerky as 24p but still has a similar cadence.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Wayne Waag]

[John Rofrano] This is why I shoot 60i. It gives better temporal resolution and is compatible with 100% of playback devices

So why NOT 60P? Maybe I’m missing something, but it would seem to provide even more options. For those who want a shiny disc, render at 60i to Blu-Ray. For those who want the cadence of 30P, just disable resample and render to 1080 30P. And more importantly, for those who want the best quality (at least, IMHO), render at 1080 60P. For the things that I’ve filmed over the last few years, I’ve always rendered to 1080 60P. I can either stream or use USB storage with my 2 year old Sony blu-ray player which plays the material flawlessly–even within an MKV container because I like chapter support. Another advantage is that if you want to put the material online with YT or Vimeo, you avoid deinterlacing, which is never perfect. Seems to me, at least, there are a lot of advantages of 1080 60P that far outweigh the negatives–at least, for this hobbyist.

wwaag

[Danny Hays]

[Wayne Waag] I can either stream or use USB storage with my 2 year old Sony blu-ray player which plays the material flawlessly-

You sparked my interested. What do you use to stream it to your HD TV? I have a Chromecast, but I need an internet connection for it to work. At least to get it started. The last update for it allows for local cast and that works from my phones but with my laptops, I had to drag it onto a Chrome browser for it to work. I could then disconnect my internet and it would still play but not at 1080 60p. And once in a while I had to reconnect the internet to get it working.

[Wayne Waag]

[Danny Hays]
What do you use to stream it to your HD TV?

Perhaps I used the wrong terminology. What I do is simply use a media server (Twonky rather than WMP) to stream files from my PC to the Blu-ray player. Nothing is uploaded.

wwaag

[John Rofrano]

[Wayne Waag] “So why NOT 60P?”

Because most of my delivery is 60i so I don’t see the need. It works for me… i realize it might not work for you. 😉

~jr

http://www.johnrofrano.com
http://www.vasst.com

[John Hughes]

John,

Always a pleasure to hear from you.

[That shouldn’t be a surprise because file size is controlled by bit rate not frame rate. So whether you have 1 frame per second or 1000 frames per second, the same bit rate will yield the same file size which means that frames at 60fps have less bits to represent them than frames at 30fps at the same bit rate.]

So given your explanation above, video shot at 24fps progressive at 50Mbps like my camera captures would be better quality (relatively) than 60fps progressive at the same bitrate – since more bits are being represented in each of the 24 frames? Is it then just a matter of choosing a higher frame rate if you don’t want the ‘juddery’ look of 24fps (for like say fast-action sports), that you would be making a sacrifice on a little quality? A trade-off so to speak with smoother movement but less overall visual quality?

[John Rofrano]

[John Hughes] “So given your explanation above, video shot at 24fps progressive at 50Mbps like my camera captures would be better quality (relatively) than 60fps progressive at the same bitrate – since more bits are being represented in each of the 24 frames?”

Yes, that is correct. There would be a huge difference between 24p and 60p at the same bit rate because you have over twice as many bits available to encode each frame.

[John Hughes] “Is it then just a matter of choosing a higher frame rate if you don’t want the ‘juddery’ look of 24fps (for like say fast-action sports), that you would be making a sacrifice on a little quality? A trade-off so to speak with smoother movement but less overall visual quality?”

Yes, but you don’t need to deliver 60p to get away with the jittery look of 24p. 30p is still a nice compromise.

~jr

http://www.johnrofrano.com
http://www.vasstsoftware.com