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AVCHD: Stable settings
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  • These settings seem to run "stable" on my camera (even in conjunction with class 6 cards) with static scenes as well as with scenes containing lots of high frequency details and motion (tried clips of 20 minutes duration). This goes for the 2.5/14, 1.7/20, 14-42Kit and 0.95/25 Nokton.

    Switching to NTSC results in card speed error here (shouldn't be an issue with faster cards, I assume).

    42 + 32Mbits in 24p mode is actually indiscerinble... IMHO. Maybe shadow detail in 42Mbit is slighty better (but really hard to tell... I have to do more systematic comparisions).

    All modes play back fine in camera (video and audio). I've noticed ClipWrap has issue with the audio (although I've left the settings unaltered). But the same files are fine in applications playing the MTS files natively. Neoscene has no issues with the audio. Avid MC imports the MTS files just fine.
    seta.zip
    427B
  • Good advisement.

    If you want really stable stuff, keep bitrate settings below 32Mbit.
  • I just modified only the PAL time limit removed and bitrate FSH to 25,000, GOP 12, 1080 50i.
    I filmed the wedding and 4 hours recording is OK. Transcend 64GB SDXC class 10.
    Only the video does not play on the camera display. Is this normal?
  • @fatpig - I can't see a difference either between the hacked/non hacked 24p 24 megabit settings. I do get the blip at the beginning of my clips, even with the sven settings. I am going to "unhack" my GH2 and set it back to the original. For me, it's not worth the disk cost. I'm sure it greatly improves 720p and 1080i though; I just don't use those modes.
  • I used Butt's No. 2 setting (42MBit GOP6) with 14-140 kit lens, Transcend 32gb class 6 card, ex-tel mode and autofocus with no problem at all.

    Here is the video (although it is compressed to 720P before upload):
  • Yes, even the Bolex!!!
  • @soundgh2 - I'm now at 13 years of just filmmaking, and FOR SURE the quality of the image is the key reason the phone keeps ringing. Yes, we can take the tweaking too far at times, and so we need - particularly as producers - to know what battles to fight. But in fact this site really is for the tweakers, those of us who LOVE to play with the image, who live and breathe this stuff. For what it's worth, we also have a non-MX'd RED, a 5d, and old Bolex cameras to play with, and the idea is to keep finding ways to make all of them look and perform better.
  • Also again in the same v large prod company - new camera choice came up AF100 was tested - ditched instantly (liked by the directors) ... why (no actual viewing at ALL lol) AVCHD hated - if the tech guy who's in charge of ingestion andhates a format - it is dead ... real world basic madness! - funny sad, but true!
  • As a Gh2 owner and in awe of what is happening here I still do wonder (as I work in post 365 days a year) if the straws we are splitting are even relevant in the real world, do they actually have any gravity...certainly not a downer, but in the end surely it has to be seen somewhere other than vimeo?Chatting to a head of post recently in the UK, a guy with background of international film thru to Tv/video, and now wrangling (generally) 21 year old film graduates working in TV and shooting, his disdain and daily education of production on why Go Pro will cost another 1k to conform etc seems to be his main job - production want to know why it costs so much to "save" their footage and he bluntly has to reply ... it's shit! In essence let's not lose sight on the fact that bitrates and GOP aside we do actually have to shoot something "watchable" by people other than me you and the other "film-makers" on vimeo youtube etc want to dissect ... assuming we do actually want people to see it?
  • If one wanted to insure auto-splitting over 4GB in 24p what would be the safest improved file posted here using a Sandisk Extreme HD 30 MB/s?
  • 720p B-Frames Setting (However, stability is an issue. If you record a 1080p @ 24 FPS video first and then record 720p @ 60 FPS stability returns.)
    seth.zip
    375B
  • @Ulisse
    >I must not read this< then read something else

    Yes: no problem with Pana Gold Class10 60Mbps SDHC
  • Butt@ "no - with Pana Gold Class 10 60MBps i have no Problem!!!
    I must not read this"

    SDXC card ?
  • Was just checking the threads for just that SD info. I just got my GH2 today and want to play :-)
  • do it !!!

  • Would be great to start new thread about most reliable SD cards at high bit rates ...
  • @Butt,
    sure :-)
  • no - with Pana Gold Class 10 60MBps i have no Problem!!!
    I must not read this
  • @Butt
    even class10 have problems , read @kae comments ...
    it is about auto-splitting files over 4GB ...
    I tested with both cards:
    SanDisk class 10 16GB extreme and Transcend class 6 32Gb ...
    if these settings works OK even with class 6 and it means very stable
  • what's this with the class 6 SD-cards - the GH2 is a cam for Class 10 => 60Mbps, and they have no problems
  • @kae
    "does not "auto-split" files over 4GB,"
    it has to do with bit rate ...
    using Tomaso settings it auto-splits right even with class 6 transcend 32GB ...
    I think that GH2 at high bit rate does "not have time" to split the file than it stops at 4GB limit ...
    Tested in 1080i/50, FSH ...
    Settings from Tomaso
  • @arvidtp

    That's good to know. God, I hope the 65M settings are breaking the cam's ability to span somehow. That would be unfortunate. I think I'll go back to stock and test for spanning to see if it's my card or the settings.

    UPDATE: Spanning only breaks for me when shooting the death chart as the GH2 with 65 settings is laying down 64Mb/s with normal detailed footage at normal data rates in this mode (50-58 Mb/s) the files are spanning fine.
  • @arvidtp

    That's good to know. God, I hope the 65M settings are breaking the cam's ability to span somehow. That would be unfortunate. I think I'll go back to stock and test for spanning to see if it's my card or the settings.
  • @kae files seems to span fine for me in 24H 80% mode set to 36mbit/s using end user patches only. This is on a 32GB class 10 Patriot LX series SDHC card. Will test next with swen's "stable" settings from July 26 which i just loaded on this morning.