Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

What causes the "jello video" effect?

Discussion in 'Phantom 2 Vision + Help' started by DudeInOttawa, Aug 4, 2016.

  1. DudeInOttawa

    Joined:
    Apr 24, 2016
    Messages:
    2
    Likes Received:
    0
    Sometimes my video has a sort of horizontal wavy effect to it. I was wondering (hoping) if that is caused by unbalanced props?.... or is that a sign of a motor going bad?.... or a gimble problem?
     
  2. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    22,109
    Likes Received:
    6,592
    Location:
    US
    Are the wavy lines dark? If so, that's known as "prop shadows". It can normally be resolved by shooting video with an ND filter.

    ND filters can resolve some other common issues too. Check out this video:

     
    #2 msinger, Aug 4, 2016
    Last edited: Aug 4, 2016
    Mako79 likes this.
  3. Blue Bird

    Joined:
    Jun 11, 2015
    Messages:
    617
    Likes Received:
    162
    Location:
    Dade County, Florida
    They make ND filters for the Phantom 2 V +? I have to look into that.
     
  4. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    22,109
    Likes Received:
    6,592
    Location:
    US
    Yes, sir. You do own a P2V+, right?
     
  5. Blue Bird

    Joined:
    Jun 11, 2015
    Messages:
    617
    Likes Received:
    162
    Location:
    Dade County, Florida
    Yes sir, but never had the use for them based on what the OP is saying.
    I am interested in them though as I am starting to fly mine more again.
    Just to see if it really makes a big difference in my video footage regarding bright lighting conditions. Thanks.
     
  6. DudeInOttawa

    Joined:
    Apr 24, 2016
    Messages:
    2
    Likes Received:
    0
    Nope its not the prop shadows... I used to get those until I got a lens hood, now it is the actual video is "jiggly" ... hard to explain.
    Kind of looks like waves, as if the video was liquid.
     
  7. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    22,109
    Likes Received:
    6,592
    Location:
    US
    Did you try different props? Or, maybe try balancing the existing props if you have a prop balancer.
     
  8. strgazr27

    Joined:
    Feb 22, 2014
    Messages:
    70
    Likes Received:
    22
    MCTV likes this.
  9. Blue Bird

    Joined:
    Jun 11, 2015
    Messages:
    617
    Likes Received:
    162
    Location:
    Dade County, Florida
    Agreed! But for $12.00 you can get 2 sets of spare props. DJI does good on balanced props from the factory.. get an extra set or 2.
    Just a piece of mind to be sure.
    Also there has been a issue with gimbal ISO mounts getting hard and stiff with the P1,P2 better known as the Ball Mount., starts to stiffen and can create the jello effect as well.
    I would suggest replacing them if the bird is over a year old or more.
     
    #9 Blue Bird, Aug 4, 2016
    Last edited: Aug 4, 2016
    phxbird57 likes this.
  10. MCTV

    Joined:
    Dec 30, 2016
    Messages:
    84
    Likes Received:
    27
    This is exactly what I was looking for. I was just starting to grasp how a slower shutter speed makes for more fluid video last night while researching and looking at ND filters.

    I was also not sure what people were meaning by "jello" and this link was very helpful. The only time I had seen anything like this is in sport mode at full speed. Unfortunately I don't have a sample video but if this is happening only at full speed is it possible that something is out of balance or misaligned?


    Thanks for the helpful link!


    Sent from my iPhone using PhantomPilots
     
  11. syotr

    Joined:
    Jul 30, 2013
    Messages:
    928
    Likes Received:
    148
    Unbalanced props are the most likely cause and easy to fix. Motors can also become unbalanced, especially if you have crashed. Bearings can fail over time and c clips can come off. You can often feel vibrations by running the motors with props off and touching each arm. Check to see if there is more play with one motor.
    Check the gimbal by moving the bird around with the motors off. Listen for humming noise or feel for vibrations.
     
  12. Mako79

    Joined:
    May 16, 2014
    Messages:
    3,466
    Likes Received:
    591
    Location:
    Sydney Australia
    You can test for jello.
    Hit record and hover at slightly above head height.
    Now grab the legs of the P2 and watch video and see if the jello has gone when you grab the legs. Whats happening is the microvibrations is transferring to your arms. Jello is caused by bad harmonics. The motors maybe set to an incorrect gain.

    The fix:
    1. Check your 4 white dampeners and make sure they are NOT damaged.
    2. Use the P2 Assistant and default your gains. It is known that a firmware update can change the gains settings. You should default them each time you do a firmware update.
     
Loading...