What is 1080/50p (or 1080/60p)?

[Walter Soyka]

[Adam Spencer] “I’m looking at getting a camcorder that records in 1080/50p, but I simply cannot find a decent explanation of it.”

1080p/50 is 1920×1080 HD video with 50 full (progressive) frames per second. Before 1080p50, you had two choices: 1080p/25, with 25 progressive frames per second, or 1080i/25, with 25 interlaced frames (or 50 half-height fields) per second.

1080i/25 essentially sacrifices spatial resolution (fewer vertical lines) for temporal resolution (more fields per second) when compared with 1080p/25. 1080p/50 gives you the best of both worlds: the entire spatial resolution of a full progressive frame and the increased temporal resolution of 25i video.

To go back to 1080i/25 or 1080p/25 from a 1080p/50 source, you’ll have to give up either that added partial or temporal resolution.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog – What I’m thinking when my workstation’s thinking
Creative Cow Forum Host: Live & Stage Events

[Rob White]

Hi Walter,

Do you have any recommended export setting for 1080/50p footage?

I’ve used the Sony NEX-FS100 camera and captured on to an Atomos Ninja.

I would like to output for Web (YouTube).

Any help is appreciated.

Thanks,
Rob White

[Walter Soyka]

[Rob White] “Do you have any recommended export setting for 1080/50p footage? … I would like to output for Web (YouTube).”

Sorry, mate, I’m not too familiar with YouTube’s compression standards, and I don’t know if it actually even supports 1080/50p.

You could try modifying Adobe Media Encoder’s “YouTube 1080p 25” preset; you’ll have to bump the level (located in the “Basic Video Settings” section directly underneath “Profile”) up to 4.2 (IIRC) to allow 1080/50p.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog – What I’m thinking when my workstation’s thinking
Creative Cow Forum Host: Live & Stage Events

[George Kalogeris]

I thought I wouldn’t need to start another thread.

recommended settings for exporting to file from CS6 ?
I have 1080/50p footage from Sony NEX-EA50
and I ‘d like to do some renderless cut-joins

[Taz Bari]

Hi

My question is that if you convert the 50p to 25 does it effect the speed of the shot. From my basic understanding when we change frame rates speed changes so i assume if i convert it to 25fps it will change the speed.

Im working on a music video with lots of tracks and effects and all the footage is 50p and i am worried that once the video is done and i have to convert it to 25fps to put online or send to a channel that the speed will all change and the video will become out of sync. Sorry if this sounds stupid but im paranoid as this is the first music video i am making.