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Advanced Can not record with new P3A

Discussion in 'Phantom 3 Help' started by rene van der meer, Dec 7, 2015.

  1. rene van der meer

    Oct 16, 2015
    Likes Received:
    I have put this on the wrong page. So I'll re-post this on the Phantom Help page.

    I have problems recording video on my brand new P3A (App: 2.4.2, RC: 1.5.70, FW: 1.5.3).
    After taking a photo, It is sometimes impossible to record a video.
    The blue waiting sign around the photo button (hour glass) keeps rotating.
    Sometimes it also takes a long time before I can stop recording.
    Has any seen this before?
    The photo's and video's on the SD card are all OK, but I will format it just to be sure.

    Occasionally I get the message Weak RC Signal. Even at close range.
    I even tried linking the RC again.

    Could either the RC or the AC be defective? no record2.jpg
  2. bbfpv

    Feb 3, 2015
    Likes Received:
    Long Island, NY
    what sd card are you using?
  3. rene van der meer

    Oct 16, 2015
    Likes Received:
    I think I might have found the cause of the recording issues: I was shooting in JPG+RAW mode.

    If I take 3 images just after each it takes ~20 sec before the writing is finished.
    With JPG this is less than 3 sec.

    I tried the original DJI SD card (Panasonic 16 GB HC 1) and a Sandisk Ultra 32 GB HC 1.
    They give similar results. Formatting does not help.

    I tried to get more accurate time stamps so I put the camera in AEB (Auto Exposure Bracketing) mode and took 5 pictures.
    Windows shows the creation time in minutes so I turned to CMD.exe and gave this command to get the timestamp in seconds:
    >forfiles /c "cmd /c echo @file @ftime"

    "DJI_0001.JPG" 21:30:10, "DJI_0002.JPG" 21:30:10, "DJI_0003.JPG" 21:30:12, "DJI_0004.JPG" 21:30:12,
    "DJI_0005.JPG" 21:30:12, 2 sec, 18.6 MB = 0.48 MBps
    "DJI_0006.DNG" 21:30:50 ... "DJI_0010.DNG" 21:31:10, 20 sec, 118.9 MB = 5.9 MBps
    "DJI_0011.JPG" 21:31:24 ... "DJI_0015.DNG" 21:31:46, 22 sec, 137.5 = 6.2 MBps

    According to the Sandisk site the speed should be 30 MBps.
    I see similar speeds in these post:
    MicroSD card testing for photography, 5 shot AEB | DJI Phantom Forum

    Is this a speed limit of the phantom 3?
    Is there a difference between the P3A en the P3P?
    #3 rene van der meer, Dec 7, 2015
    Last edited: Dec 7, 2015