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AVCHD: Extreme settings
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  • @EOSHD

    Luck. I just multiplied the defaults x 2 and kept hiking up the 24H video bitrate until it capped. A 3x multiplier didn't work and a 2.2x didn't change the result so I stopped at 2x. The GOP 3 I've been using for months with 1080 24P Native on the GH1 getting about 48mb/s and very filmic footage. But the GH1 at that setting wasn't stable on death charts, grass or trees. The GH2 is AND at a much higher Mb/s.
  • Looks good @kae

    What was your process to arrive at the chosen high / low, top / bottom settings?

    Thanks, will test these.
  • These are the most extreme 1080 24P 3 GOP settings I have tested that produce an amazing, filmic image while still managing to playback in cam, computer and ingest into an NLE (still has 10 frame glitch in beginning of clip):

    Video Bitrate 24H=65000000
    1080i50 and 1080p24 GOP Size=3
    Video buffer=0x3000000
    Video buffer 24p=0x3600000
    1080p24 High Top Setting=42418
    1080p24 High Bottom Setting=29692
    1080p24 Low Top Setting=31178
    1080p24 Low Bottom Setting=21824

    (PAL users wanting to shoot 1080i/50 may need to add the following as the above settings force pal 1080i GOP to 3:
    Video Bitrate FSH/SH=42000000
    Video Bitrate FH/H=35000000