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Using the mjpeg 720 instead of the 1080P of the EP5 for grading

Discussion in 'Olympus Cameras' started by D7k1, Oct 23, 2014.

  1. D7k1

    D7k1 Mu-43 Top Veteran

    686
    Nov 18, 2013
    I am finding that the 720P mjpeg with its 32 mbyte rate is a better codec for grading even after upresing to 1080P than the 20 mbyte 1080P on the EP5. Anyone else find this true in video. When I use vegas Qucktime codec at full resolution to upres the 720 it is sharper than the 1080 and seems to have less artifacts.
     
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  2. jyc860923

    jyc860923 Mu-43 Hall of Famer

    Feb 28, 2012
    Shenyang, China
    贾一川
    it's true, Olympus avchd codec sucks
     
  3. D7k1

    D7k1 Mu-43 Top Veteran

    686
    Nov 18, 2013
    The funny thing is I read this a long time ago on DPR when I had an EPL1. The new 1080P is "ok" for very static stuff, but the 720 for detailed scenes or movement is much better IMHO. Have you done a comparison also?
     
  4. TheRenaissanceMan

    TheRenaissanceMan Mu-43 Regular

    84
    Oct 11, 2013
    Interesting...any chance you could share a side-by-side comparison?
     
  5. sgreszcz

    sgreszcz Mu-43 Veteran

    439
    Oct 7, 2012
    I've played with this, but not extensively. I mostly downscale my 1080p to 720p anyway. I stay with 1080p for the slightly higher bitrate on the ep5. I remember the mjpeg being 'fuzzier' than the h264 compression, but I should really try it again to avoid the macroblocking that I get with scenes with more detail or movement.

    Damn, I just wish that olympus would fix their codec. They deliver a great image with excellent colour and wonderful lenses. I think that I will wait one more round of camera bodies (em5 ii) or jump to Sony or Panasonic or Samsung and deal with lens IS or external stabilisation.
     
  6. D7k1

    D7k1 Mu-43 Top Veteran

    686
    Nov 18, 2013
    The ACHD 1080P is 20mbites vs 32mbites mjpeg 720 as reported by vegas, that is what gives the 720P an advantage. I will post an example when I have time but it might be a week or two.
     
  7. D7k1

    D7k1 Mu-43 Top Veteran

    686
    Nov 18, 2013
    Also its very easy to verify, just take a scene that has lots of detail. Then, depending on what your camera settings are, start adding some color corrections and sharping to the 720P, up res it in a good NLE, and then sharpen & color correct the 1080P stuff out of the camera - see which looks better to you. For me the 720P is not only better with scenes with lots of detail but it takes grading so much better.
     
  8. sgreszcz

    sgreszcz Mu-43 Veteran

    439
    Oct 7, 2012
    I took a few clips today at 1080p and 720p fine h264 .mov as well as 720p mjpeg .avi. Will compare and post soon...
     
  9. D7k1

    D7k1 Mu-43 Top Veteran

    686
    Nov 18, 2013
    I will be very interested to see your results.
     
  10. D7k1

    D7k1 Mu-43 Top Veteran

    686
    Nov 18, 2013
    I will be very interested to see your results. Also I found that the mjpeg needs to be sharpened to get the best results, but because it has a lot more data it takes the sharpening (I use very little but never more than say 40%) for best results.