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Activity Forums AJA Video Systems Strange frame rates

  • Strange frame rates

    Posted by Sean Davison on February 23, 2007 at 4:44 pm

    Can any one tell me why every clip I digitise through my Kona LH shows a framerate in Quicktime of 24 point something instead on the 25 fps it is meant to be
    Both DVCProHD and Uncompressed are showing this and its slightly troubling.
    FCP sees the frame rate as 25fps in the browser and is very happy but a certain grading package which shall remain nameless can’t handle the discrepancy

    Sean Davison replied 19 years, 5 months ago 3 Members · 10 Replies
  • 10 Replies
  • Gary Adcock

    February 23, 2007 at 5:00 pm

    sean
    more info…

    what was the tape shot on, how was the camera set up etc.

    and do not trust what QT says — never

    gary adcock
    Studio37
    HD & Film Consultation
    Post and Production Workflows

  • Gary Adcock

    February 23, 2007 at 5:00 pm

    sean
    more info…

    what was the tape shot on, how was the camera set up etc.

    and do not trust what QT says — never

    gary adcock
    Studio37
    HD & Film Consultation
    Post and Production Workflows

  • Sean Davison

    February 23, 2007 at 5:14 pm

    The tapes fine – Its a Sony HDCam through my M2000p Sony Deck – It happens with every clip from every machine.

  • Gary Adcock

    February 23, 2007 at 5:22 pm

    AH

    the 2000 mmmm…..

    if your working in 25 is the deck set correctly ( dumb question i know)
    but this puppy has some really weird setups and maybe it is sending out DF time when it should not be.

    this deck is the only hdcam deck that still sees beta Sp tapes correct and works with the older 1035 analog HD content. So
    some of the functions were ment to be region specific.

    this would not be a US deck in the EU would it.?
    That P on the end of the name indicates it is a North American issue model

    Check to see if the frame rate out is 25 as DF or NDF – 25 is a NDF format.

    gary adcock
    Studio37
    HD & Film Consultation
    Post and Production Workflows

  • Sean Davison

    February 23, 2007 at 5:54 pm

    Its 25 – (from Display on front. I dont think its the deck because I get it from my HDV deck too)

  • John Pale

    February 24, 2007 at 10:13 pm

    Try opening the offending clip in Cinema Tools, then conform it to the proper frame rate.

    Since the clip actually is the proper frame rate, there will be no change to it, except the metadata that is causing Quicktime to report the wrong framerate will be fixed.

    I had this happen a while back, and this fixed it for me.

    Try it out and see.

  • Sean Davison

    February 24, 2007 at 11:42 pm

    Thanks – I can do a batch export but its a bit of an issue if theres 1500 clips!

  • John Pale

    February 25, 2007 at 6:49 pm

    If its any consolation, it only takes a few seconds, as it does not have to render anything. Its not actually changing anything except metadata.

    Try it on one clip to see if it actually fixes your problem first.

  • Sean Davison

    February 25, 2007 at 8:15 pm

    Ive never used cinema tools but Ill have a look on Monday!

  • Sean Davison

    February 28, 2007 at 9:36 am

    IT seems to work – thank you very much for that!

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