Sunday, November 15, 2009

Re: [FCP-L] AJA QTtoDPX and FCP don't agree

So in essence when FCP captures the clip there are some handles that are never seen in FCP or QTPro but under the hood there are actually more frames of video in the clip. There must be some metadata that chokes the access of FCP or maybe QT on which FCP is based to not access the handles. The conversion program from AJA must not have the same metadata constraint. This kinda reminds me of Avid when you set the batch capture to optimize speed instead of disk space. In that mode Avid will continue to capture one big clip when there are two smaller clips that are close enough to each other. In that situation Avid only creates one media file instead of two but the clips in the bin never include the gap area. Very interesting.


--- In FinalCutPro-L@yahoogroups.com, Jay Mahavier <jay_mahavier@...> wrote:
>
> So, in FCP I got under the File menu to Log and Capture. I enter for
> a start TC 00:01:00:00. For an end TC I enter 00:01:01:00. I capture
> the clip. In FCP when I load the clip in the viewer that is the exact
> frame range displayed. When I reveal file in Finder I open the .mov
> file in QTpro. The frame range is exactly what I expect.
> 00:01:00:00 thru 00:01:01:00. Then I load that same .mov file into
> AJA QTtoDPX and Translate it to a DPX sequence it makes 47 frames (one
> I did earlier was 48, but this one ended up being 47). When I open
> the first DPX file the burn-in is 00:00:59:21. The last frame has the
> burn-in TC 00:01:01:19. I don't get it.
>
> The source tape is HDSR 1080psf 23.976 4:4:4 RGB. The codec used in
> FCP is AJA KONA 3- 1080psf 23.98 DL 10-bit Uncompressed Log RGB. TC
> convert on the deck is set to Line.
>
> Jay
>
>
> On Nov 15, 2009, at 9:27 PM, johnrobmoore wrote:
>
> > Perhaps I'm not understanding what you mean by logged. If I start
> > with a QT movie that has frames numbered 1 to 25 how can I end up
> > with a conversion that has numbers beyond 25? Where are the handles
> > coming from? If you see the number 26 where did it come from? I
> > guess by logged you must be selecting a portion of a QT that has
> > more frames.
> >
> > --- In FinalCutPro-L@yahoogroups.com, Jay Mahavier
> > <jay_mahavier@> wrote:
> >>
> >> Yes, the burn-in is beyond what is logged. I log a clip that is 25
> >> frames long. FCP and QTpro display it as a 25 frame file that's
> >> starts and ends on the expected frames. But when it's opened in
> >> QTtoDPX and extracted to frames it is 48 frames long. No frames are
> >> repeated. Each one is really really there. Every captured files has
> >> 1 to 3 frames on the head and 22 or 23 frames on the tail added
> >> beyond
> >> what is logged.
> >>
> >> Now this is all in a 23.976 FCP project. Actually more than one. I
> >> have not tried any of these test in projects at different frame
> >> rates. Maybe I'll try that tomorrow. But this is jacked up that I
> >> can't just capture what I logged.
> >>
> >> Jay
> >>
> >> On Nov 15, 2009, at 7:01 PM, johnrobmoore wrote:
> >>
> >>> If you start with 25 frames with burned in time code and now have 48
> >>> frames are the numbers in the burn in beyond the original 25 frame
> >>> limits of start and stop. I really don't see how that could happen
> >>> if your original clip only had 25 frames. Are the DPX frames coming
> >>> from different fields? Just typing out loud here.
> >>>
> >>> --- In FinalCutPro-L@yahoogroups.com, Jay Mahavier
> >>> <jay_mahavier@> wrote:
> >>>>
> >>>> As an example. I have a clip that I logged as 1:01, I keep
> >>>> forgetting
> >>>> that FCP is outpoint inclusive. In the FCP bin it shows as
> >>>> 1:01. In
> >>>> the Viewer it shows as 1:01 and if I switch to frames it shows as
> >>>> 25.
> >>>> If I move through the clip one frame at a time I count 25
> >>>> frames. If
> >>>> I reveal in finder and open that in QTpro it shows as 1:02
> >>>> because QT
> >>>> tends to be sloppy, but close enough. If I move through the clip
> >>>> in
> >>>> QTpro one frame at a time I count 25 frames. I then open that file
> >>>> in
> >>>> QTtoDPX and it list it as 48 frames long. ?????? I then Translate
> >>>> that to a file sequence and sure enough it makes 48 frames of
> >>>> picture. No frames are duplicated. I know this because I used the
> >>>> monitor out jacks on the deck so I have a TC burn.
> >>>>
> >>>> I had noticed this all sometime back and really didn't care at the
> >>>> time, but now we are trying to use the system to capture material
> >>>> for
> >>>> a VFX company. They really don't like having to roto and animate
> >>>> on
> >>>> more frames then required. And it also bumps the cost up a bit.
> >>>> So I
> >>>> would really like to figure out why the system is doing this.
> >>>>
> >>>> FCP 6.0.5
> >>>> QT 7.6
> >>>> OSX 10.5.5
> >>>>
> >>>> Thanks,
> >>>> Jay
> >>>>
> >>>> On Nov 15, 2009, at 12:38 PM, Rainer Standke wrote:
> >>>>
> >>>>> When you run into frame rate or duration issues, it's always
> >>>>> worthwhile to run the clip through Cinema Tool. Conform it to some
> >>>>> frame rate, and back to the frame rate you need.
> >>>>>
> >>>>> Have you tried cleaning up long frames? Tools/Long Frames.
> >>>>>
> >>>>> Also, when you switch the FCP TC displays to frames, do you see
> >>>>> the
> >>>>> expected numbers?
> >>>>>
> >>>>> This issue seems to point to QuickTime as the culprit. Are you
> >>>>> certain
> >>>>> that OS, QT and FCP are all in versions that work together?
> >>>>>
> >>>>> Rainer Standke
> >>>>> XMiL Workflow Tools
> >>>>> http://www.xmil.biz
> >>>>>
> >>>>> On Nov 15, 2009, at 9:39 , Jay Mahavier wrote:
> >>>>>
> >>>>>> When you selectively read just the section that will fit your
> >>>>>> reasoning it may seem that way. But upon further reading of the
> >>>>>> entire post you realize that regardless of the duration of the
> >>>>>> shot
> >>>>>> that 1 to 3 frames are added to the head of the shot and 22 or 23
> >>>>>> frames are added to the tail. FCP and QTpro both report the
> >>>>>> length
> >>>>>> as
> >>>>>> expected and logged, but when extracting to a file sequence the
> >>>>>> number
> >>>>>> of frame is consistently wrong by anywhere from 23 to 26 frames.
> >>>>>> Weather the logged shot is 1sec, 5 sec, 10 sec, 2 min, 3:12,
> >>>>>> 3:12:14,
> >>>>>> or any other length of shot tried.
> >>>>>>
> >>>>>> Jay
> >>>>>>
> >>>>>>
> >>>>>> On Nov 15, 2009, at 2:39 AM, Karl Newman wrote:
> >>>>>>
> >>>>>>> On Nov 14, 2009, at 4:50 PM, Jay Mahavier wrote:
> >>>>>>>
> >>>>>>> I capture 4:01 that's 4 seconds and 1 frame from a tape. FCP
> >>>>>>> reports
> >>>>>>> it as 4:01. QTPro reports it as 4:01. That should be 97
> >>>>>>> frames. I
> >>>>>>> run it through AJA QT to DPX and I get 120 frames out.
> >>>>>>>
> >>>>>>> Something is converting it to 29.97.
> >>>>>>>
> >>>>>>> Karl Newman
> >>>>>>> Karl Newman Productions
> >>>>>>>
> >>>>>>> kwnewman@
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> [Non-text portions of this message have been removed]
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> ------------------------------------
> >>>>>>>
> >>>>>>> To learn more about the FinalCutPro-L group, please visit
> >>>>>>> http://groups.yahoo.com/group/FinalCutPro-LYahoo! Groups Links
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> ------------------------------------
> >>>>>>
> >>>>>> To learn more about the FinalCutPro-L group, please visit
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> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>> ------------------------------------
> >>>>>
> >>>>> To learn more about the FinalCutPro-L group, please visit
> >>>>> http://groups.yahoo.com/group/FinalCutPro-LYahoo! Groups Links
> >>>>>
> >>>>>
> >>>>>
> >>>>
> >>>
> >>>
> >>>
> >>>
> >>> ------------------------------------
> >>>
> >>> To learn more about the FinalCutPro-L group, please visit
> >>> http://groups.yahoo.com/group/FinalCutPro-LYahoo! Groups Links
> >>>
> >>>
> >>>
> >>
> >
> >
> >
> >
> > ------------------------------------
> >
> > To learn more about the FinalCutPro-L group, please visit
> > http://groups.yahoo.com/group/FinalCutPro-LYahoo! Groups Links
> >
> >
> >
>


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