1. Welcome to Mu-43.com—a friendly Micro 4/3 camera & photography discussion forum!

    If you are thinking of buying a camera or need help with your photos, you will find our forum members full of advice! Click here to join for free!

[ASK]OMD video anomali(?)

Discussion in 'Video Post-Production' started by ori, Sep 23, 2012.

  1. ori

    ori New to Mu-43

    Apr 16, 2012
    bandung, Indonesia
    hi guys, recently I use an OMD to do my friend's pre-wedding video.

    1. I use the highest setting video format
    2. turned off the noise reduction (not sure if its affecting to the video performance)

    3. use all the IBIS capability(mode 1),
    4. and pair the OMD with 14-45 f3.5-5.6 Panasonic ASPH mega OIS(with OIS turned off).

    I encounter an issue after I copy the video files to my computer, there is a dropping image quality at some point. it flicker especially when there's a heavy movement.

    this is the screen capture where the 'flicker' occurred
    Subscribe to see EXIF info for this image (if available)

    as you can see, there is a significant drop on the image quality.
    Im completely baffled by this issues. is it because of the lens? the IBIS? slow SDCard? video format? or all of them combines that cause high bit rate transfer?:confused: 

    If you guys can help me determine this issue I will be please:thumbup:.

    ps: this does not occurred when I use olympus 45mm f1.8. and only visible when the file open in my computer or iPad, it looks fine in the OMD LCD.
  2. Promit

    Promit Mu-43 All-Pro

    Jun 6, 2011
    Baltimore, MD
    Promit Roy
    I've seen this in GH2 land before when dealing with fairly complex scenes like foliage, and I haven't spent enough time with my EM5 to be sure yet but I'm pretty sure it does this often in foliage scenes. Basically the camera has a set bitrate it's trying to hit, so it's writing out frames to try and tune to that rate. If it overshoots, some frames will have their bitrates massively cut back in order to fit in the overall bitrate. It probably only looks fine on the LCD because it's too small.

    I have also seen it provoked on the GH2 when using high bitrate hacks with slow cards, but any class 10 ought to be fine for the EM5.
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.