Welcome to PhantomPilots.com

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

  1. bonzer2u

    Joined:
    Mar 25, 2016
    Messages:
    22
    Likes Received:
    2
    I just got my P4 today and also received my 64GB sandisk extreme (4k blessed) yesterday...

    I had a gut instinct that the DJI supplied Panasonic 16GB card may not be able to handle 4k and might why so many folks are getting poor video performance capturing 4k out of the box, only to complain in this and other forums.

    It appears to me that the DJI card is not worthy of 4k throughput whether it be video or 4k resolution pics, plain and simple... Also have to keep in mind that 'sustained throughput' is where it counts, not burst transfer specs.

    Panasonic16GB_Dji.jpg Sandisk64GB_Extreme.jpg
     
    #1 bonzer2u, Mar 29, 2016
    Last edited: Mar 29, 2016
  2. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    18,826
    Likes Received:
    5,542
    Location:
    US
    Can you explain in a little more detail what you're trying to show us with your screenshots?
     
  3. Stealthmatt

    Joined:
    Jun 22, 2013
    Messages:
    381
    Likes Received:
    141
    UHS Speed Class 3 (U3) is a new standard specified by the SD Association to meet 4K video needs. It guarantees a minimum constant write speed of 30 MB/s (240 Mbps)..


    So this is well higher than the required amount for 4 K, so you please explain what your trying to show.
     
    isopro likes this.
  4. isopro

    Joined:
    May 29, 2014
    Messages:
    387
    Likes Received:
    119
    I think he is saying P4 as a bitrate of 60MB/s and the card can only let 41-52MB/s write speed, so it is not suitable for 4k recording. :)
    edit: the specs say 60 Mb/s witch is 7.5 MB/s, that is quite a lot of compression, but should not be any issue with the card...
     
  5. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    18,826
    Likes Received:
    5,542
    Location:
    US
    I hope not -- since it's really only 7.5 MB/s.
     
    zacksomeone likes this.
  6. isopro

    Joined:
    May 29, 2014
    Messages:
    387
    Likes Received:
    119
    ya you are right, everything should be fine, i was editing my post as your answered lol.
     
  7. bonzer2u

    Joined:
    Mar 25, 2016
    Messages:
    22
    Likes Received:
    2
    I didnt get a very good cut-n-paste but the top screen scrape is the DJI supplied panasonic 16GB sdcard, stamped class 10, U3..NOT Even close.
    The second scrape is from my sandisk 64GB extreme, stamped class 10, U1 which completely smokes the panasonic by 25 to 30% across the board.
    There is no way the supplied dji card can handle 4k with real performance numbers like I have tested.
    If DJI wanted to supply a viable 4k card, panasonic ripped them off bigtime as their 'stamped' specs are totally bogus.
     
  8. bonzer2u

    Joined:
    Mar 25, 2016
    Messages:
    22
    Likes Received:
    2
    DUDE, this is the 4k file size transfer test, nothing to do with 4k in video terms
     
    isopro likes this.
  9. Ramphex

    Joined:
    Mar 19, 2016
    Messages:
    761
    Likes Received:
    239
    Location:
    Pennsylvania
  10. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    18,826
    Likes Received:
    5,542
    Location:
    US
    That's what I'm not understanding. Is your top scrape telling us the supplied card can write at an average of 41 MB/s?
     
  11. bonzer2u

    Joined:
    Mar 25, 2016
    Messages:
    22
    Likes Received:
    2
    Those are excellent cards, also sandisk and samsung, you got lucky compared to I....
     
  12. bonzer2u

    Joined:
    Mar 25, 2016
    Messages:
    22
    Likes Received:
    2
    U betcha....
     
  13. Ramphex

    Joined:
    Mar 19, 2016
    Messages:
    761
    Likes Received:
    239
    Location:
    Pennsylvania
    What version of Panasonic card did you get with yours?
     
  14. bonzer2u

    Joined:
    Mar 25, 2016
    Messages:
    22
    Likes Received:
    2
    All it says is panasonic microsd HC, class 10, U3 16GB made in taiwan
     
  15. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    18,826
    Likes Received:
    5,542
    Location:
    US
    The Phantom can only write at a max of 7.5 MB/s. How would having a card that has a write speed of 41+ MB/s be beneficial for shooting 4K video with the Phantom?
     
    GadgetGuy and dhsprogis like this.
  16. bonzer2u

    Joined:
    Mar 25, 2016
    Messages:
    22
    Likes Received:
    2
    I sure hope not, wouldnt even get 720p to the card if thats the case.
     
  17. Ramphex

    Joined:
    Mar 19, 2016
    Messages:
    761
    Likes Received:
    239
    Location:
    Pennsylvania
    Let's keep in mind there are MB = Megabytes and Mb = Megabits. There's 8 Megabits in 1 Megabyte.

    Your SD card ratings will more than likely be measured in Megabits.
     
  18. bonzer2u

    Joined:
    Mar 25, 2016
    Messages:
    22
    Likes Received:
    2
    negative, capital letter = megaBYTE, The program writes a temp 1GB file to the sdcard and deletes it after the test
     
  19. maseman88

    Joined:
    Mar 23, 2016
    Messages:
    320
    Likes Received:
    139
    Could this be why I was having rendering issues while trying to export a 4K clip? Gahhhh I just wanna record, edit, and post with no issues


    Sent from my iPhone using Tapatalk
     
  20. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    18,826
    Likes Received:
    5,542
    Location:
    US
    It is the case per the Phantom 4 specs. What am I missing?