Why are all camcorders useless??

[Rick Wise]

Shutter angle is a way to describe how closed or open is the shutter. It does not look like your camera has that possibility. As for 60i on YouTube, I’m pretty sure it will — but shoot a quick test and upload it to make sure…

Rick Wise
Cinematographer
San Francisco Bay Area
https://www.RickWiseDP.com

[Ralph Savage]

Rick,

Thanks for the advice. I’m going to do just that.

[David Eaks]

As I understand it, Shutter Angle describes the relationship between frame rate and shutter speed based on the real physical rotary shutter of a film camera, unlike our digital cameras, but the concept still applies. For example, to change the “angle” of 30fps video, you would simply adjust the shutter speed. I couldn’t find the specific video that helped me figure it out but I found another one that works. At about 1:30 there’s a good graphic that makes the concept of Shutter Angle easy to understand. There’s also a link to the guys website in the description for more reading if you’re interested.
https://www.youtube.com/watch?v=OTqR7XkBEj4&sns=em

I agree with the suggestions for shooting 1080 60i but it might be worth trying out 720 60p as well. While I’m not really experienced with 720 60p (or is it “p60” if someone could clarify the meaning of where the letter is placed, I would be most grateful), I think you can shoot at 1/60 shutter speed to get the “normal” amount of motion blur (and same exposure levels that you’d get at 1080 60i 1/60 shutter). As opposed to U720 60p with a shutter speed of 1/120 (1/125) which would be 180 degrees, for the smoother motion of 60fps and the crisp low motion blur of higher shutter speeds.

In consideration of panning the interior of rooms, I think you would want the least amount of jitter and as crisp and low motion blur images as possible. Seems like 60p and as high of a shutter speed as you can get, light permitting, fits the bill. Thats my theory anyway, FWIW.

Some contents or functionalities here are not available due to your cookie preferences!

This happens because the functionality/content marked as “Google Youtube” uses cookies that you choosed to keep disabled. In order to view this content or use this functionality, please enable cookies: click here to open your cookie preferences.

[Paul Reilly]

There have been a variety of causes discussed to explain pan-judder (shutter angle, the AVCHD spec itself, rolling shutter, or simply the guy panning too fast cos of his inabilities! Loved that one). I want to point out another cause which certainly CAN occur (happened to me on a multi-camera shoot). If your editor is set to a different frame rate from the camera, then it will perform a crude type of frame rate conversion; essentially it will either drop or duplicate frames to force it in. So if you accidentally film at 30fps, but your editor timeline is set up to 24 or 25 fps, the editor will drop roughly every 6th frame when you import.

You won’t even notice this on stationary scenes or just dialogue, but it will really jump out at you when you…… PAN.

[Robert Hosking]

I know EXACTLY what you’re talking about. The video pans fine in the computer editor (for me Premiere) but stutters when you upload to YouTube. I have tried a lot of different combinations of files from mpeg to MP4 to AVI to blah blah blah and every variation within, but still get stuttery pans when viewed on YouTube. Super frustrating. And all of these comments about skill and refresh rates are hogwash. I just think cheaper camcorders and cameras can’t do a smooth pan. No idea why. I have a DSLR Nikon Coolpix P500 and a Canon Vixia HF R20. Both are not top end cameras and neither create a smooth pan once edited and uploaded. Someone needs a punch in the face for not giving me a smooth pan online. May have to go back to film.

[Ian Ferguson]

if the video plays back fine in the device that took it you need to look elsewhere.
since it plays back fine in your editor then it’s clearly not the camera, editors dont invent frames but players may drop frames if they cannot keep up.

as for the original question, i didn’t think the gop was a fixed value (happy to be educated otherwise) i was under the impression that if enough was changing you may only get I frames so unless the pan is too fast for the creation of these you should get no jumps.

very new to video so could be way out, but trying to get my head round it all, tell me if i’ve got it all wrong.