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RobRocket
Participating Frequently
July 13, 2019
Question

Flickering help?

  • July 13, 2019
  • 9 replies
  • 1070 views

test - YouTube https://www.youtube.com/watch?v=7ftYTvJy-4w

Can someone let me know what is going on in the clip? I want to know what the "flickering, or choppiness is caused by? It is really noticeable on the sides of the tower near the end of the video. Is it just that the camera movement is too fast? It is filmed at 30p 1/60th shutter, put onto a 24FPS timeline. I don't no notice it as much when played back on my TV. Any ideas, and can it be fixed?

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    9 replies

    Known Participant
    August 15, 2019

    I have simillar qestion.

    WHY 4K video flickering? First of all on forest with many trees or gravel rocks panning?

    Example Italian Dolomites - Fall in the Alps - 4K Nature Documentary - Episode 2 - YouTube     from 15 minute

    I have spend many many hours with 25 to 50 or 60 FPS decoding. Also Flicker removal, field order anti flicker, lot off plugins like  deflicker,auto levels, video moire,...I have 3 types 4 K not professional video kameras.

    Only one help but contraproduktive - desharpen video -10 or -20.

    I think it, is done by camera senzor. Probably it is video moire.What can I do with this? I have lot of nature videos.

    Legend
    August 3, 2019

    That's really beautiful ! Good going !

    I was starting to get bummed out cause I didn't see the bird landing ..but then he showed up and I was happy.

    The color stuff.. I don't know about CC options... cause I use resolve now or else CS6 ( which had speedgrade ) but you can whittle that down to tweaking 2 things... some clips could use a tweak for luminance values ( just tonality between black white and midtones ) .. and a couple had grass ( the darker grass areas cause you have one patch that is pretty light in the background which is not what I'm talking about ) … that was a bit yellow.

    You might be able to help that with lumetri curves ( hue vs satution , etc. ).. using scopes so you see how it effects RGB values...

    Anyway, good going ! 

    Legend
    August 3, 2019

    sample ...

    1 is too yellow

    2 is OK

    match 1 to 2 if you can... get rid of yellow a little bit ...is tricky but worth it.

    RobRocket
    RobRocketAuthor
    Participating Frequently
    August 3, 2019

    Thanks for all the help everyone, here is what I ended up with should you want to see it. .  I still have a lot to learn. I found the colour correction to the hardest. Comments and suggestions are welcome.  davidu91722252rodneyb56060189Ann Bens

    Dean Utian

    Known Participant
    August 3, 2019

    Smooth shooting bro. I’d give you editing advise but that’s something you’ll learn yourself form YouTube videos and such (and of course practice) but in terms of the actual shots, pretty smooth.

    Known Participant
    July 15, 2019

    If you shot in 30 then work in a 30fps timeline

    Legend
    July 14, 2019

    30 at 1/60th sec is pretty cool re: sharp image ( 48th sec usually makes slightly more blur with motion ). I think the main issue is you have to throw out 6 frames to go from 30 to 24. So when you throw out those frames ( when moving ) you sorta 'see' it … I don't think the pan / tilt speed of camera operator is over fast, but kinda could be a little bit slower … but then you might have missed that bird, landing when it did. How did you get that bird to fly up there when you said, " Action ! " and started your camera move ???

    Community Expert
    July 14, 2019

    I see the choppiness.

    It is always going to be difficult to get a perfectly smooth pan with a handheld camera. For these types of shots, I'd suggest panning slowly. You should be able to speed up and keep things smooth but then may get some flicker.

    In terms flicker removal, I've used BorisFX plugin with Premiere and it worked well for me.

    https://borisfx.com/effects/continuum-flicker-fixer/

    There are other products that do similar things, like the one below, but I haven't had any direct experience with them:
    https://revisionfx.com/products/deflicker/premiere-pro/

    Legend
    July 13, 2019

    well.. in that case... as Ann said, try the 30fps source in 30 fps timeline, export as needed ( if going to youtube export 30 fps and let youtube do what it wants )

    : )

    Legend
    July 13, 2019

    not on my computer... looks fine here.

    weird.

    Ann Bens
    Community Expert
    Community Expert
    July 13, 2019

    Yes camera movement is too fast. Might want to use a 30 fps timeline.

    Legend
    July 13, 2019

    on my computer (laptop with internet that is not very fast ) it looks fine.  I don't see choppy stuff or lag or nothin.

    Movement is movement.. it is what it is … but in your case ( your sample) I'm focused on going up to see bird landing on building and back down to seeing some people or stuff on ground to right of tower. I am NOT looking at the tower but what you are 'directing' my attention to' … so who cares about every frame not being perfectly IN FOCUS etc.. it's the nature of the movement.

    ???

    When I watch in my usual way ( see image ) it's great. If I go to FULL SCREEN it gets a bit more blurry... ( I have full HD monitor on laptop). I still think its fine.

    You are over thinking it in my opinion...  focus more on the static shots that make your story come to life.

    RobRocket
    RobRocketAuthor
    Participating Frequently
    July 13, 2019

    rodneyb56060189​, Strange you don't see anything. I fid it really noticeable and thought the footage may be unusable. When you pause it looks fine. You can really see what I'mtalikng about when I pan back in the double window just below the apex. It almost seems like it's vibrating.