Latest post Wed, Jan 27 2016 4:05 PM by jef. 6 replies.
Page 1 of 1 (7 items)
Sort Posts: Previous Next
  • Mon, Jan 25 2016 9:17 PM

    Mixed camera formats

     I could use some help with mixed camera formats, multi cam setup and flex frame.

     My final project in MC is 1920x 1080 at 23.97 frames. I am importing footage from two 4k cameras and one HD camera.

     First camera is a JVC GY-HM 170

    format H.264 in mov wrapper resolutions 3840x2160 24 fps

     Second cameras is a Sony AX100

    format used AVCHD & Mp4 both have resolutions of 3840x 2160  23.97 FPS

     Third camera is

    Canon t3i at 1920x1080 23.97 FPS

    ----------------------------------------------------------------

    I was able to "link to media" the JVC H.264 QT and then transcode to DNxHR at 3840x2160. I then linked in a bin and transcoded, Inside the bin the image size was 1920x1080 but the format was 3840x2160. 

    I was not able to bring in the Sony AX100 Mpeg 4 it needed to be transcoded to QT DNxHR at 3840x2160. I then linked in a bin and transcoded, Inside the bin the image size was 1920x1080 but the format was 3840x2160. 

    I imported the Canon T3i fine.

    I then made sub clips of the three cameras in bin, set the in points and grouped them together for multicam view. 

    --------------------------------------------------------------------------
    Question 1

    When I bring the grouped clips to the timeline and use Effect Editor I do not see Frame Flex. Workaround is to add another video track and bring in the transcoded footage from the bin.

    Question 2

    The sony camera is at a different aspect ratio in the source and composer window then the JVC camera in the composer window. Both these aspect ratios should be the same because both cameras have the same resolution.

     attached project picture, view in new window

    MC Version: 2018.2 System: PC windows 7 Pro 64 bit, Workstation ATX mid Tower case, MSI Z87-G45 MBoard, 650 watt,Crucial M500 250GB SSD, Intel i7-4770K... [view my complete system specs]


    MC 8.4.5     Built Workstation-Windows® 7 Professional, 64bit,/ Intel® CoreTM i7-4770K processor/ NVIDIA Quadro K2000D 2GB/16GB Dual Channel DDR3 SDRAM at 1600MHz /MSI Z87-G45 Mother Board/650 Watt Power/ Super Multi Blue Writer (LG BH12LS38)/ AVID C-400 for audio interface  Pro Tools MP

     

     

     

    Filed under: , ,
  • Mon, Jan 25 2016 9:35 PM In reply to

    • jef
    • Top 50 Contributor
    • Joined on Sun, Feb 26 2006
    • Maryland
    • Posts 3,237
    • Points 39,280

    Re: Mixed camera formats

    Ouch.

    I would not attempt to do a multicam job with mismatched codecs. 

    If I were you a would Link (old AMA) the media from the cameras into seperate bins.  And then I would transcode to a single DNx codec, all with the same frame size and frame rate.

    Offline the show, then relink to the original media for final work.  Leaving out the details for brevity.

    Any other workflow is asking for a painful offline experience.

    And the biggest question is whether the JVC camera really made 24 fps media or is it really 23.976 with a "dumbed down" label?

    That is my opinion.  There may be others ....

    Good luck,

    Jef

    Avid DS 11.0.2 R.I.P | MC "Well, it depends ..." | OS 10.11.x - various MacPro Towers - home system MacPro Dual 2.8 8core GTX680 "Harpertown"... [view my complete system specs]

    _____________________________________________

    Jef Huey

    Senior Editor

    Old Stuff  http://vimeo.com/album/3037796

  • Mon, Jan 25 2016 9:49 PM In reply to

    Re: Mixed camera formats

    I could transcode to Raster Dimensions at "Project Dimensions (proxy off).

     Remember I did transcode to original source dimensions. With original source dimensions I can bring in another track layer the original on top after making the (Multi cam cuts) and have Frame Flex.   

    MC Version: 2018.2 System: PC windows 7 Pro 64 bit, Workstation ATX mid Tower case, MSI Z87-G45 MBoard, 650 watt,Crucial M500 250GB SSD, Intel i7-4770K... [view my complete system specs]


    MC 8.4.5     Built Workstation-Windows® 7 Professional, 64bit,/ Intel® CoreTM i7-4770K processor/ NVIDIA Quadro K2000D 2GB/16GB Dual Channel DDR3 SDRAM at 1600MHz /MSI Z87-G45 Mother Board/650 Watt Power/ Super Multi Blue Writer (LG BH12LS38)/ AVID C-400 for audio interface  Pro Tools MP

     

     

     

  • Tue, Jan 26 2016 12:46 PM In reply to

    • jef
    • Top 50 Contributor
    • Joined on Sun, Feb 26 2006
    • Maryland
    • Posts 3,237
    • Points 39,280

    Re: Mixed camera formats

    Getting all the sources to the same codec, same frame dimension and same frame rate will really help your offline.

    And yes, my suggestion would be do the creative cut.  And when you reach picture lock (does this really exist Smile ) the reconform to original source.  When you do that Framflex will appear and you can fiddle with reframeing if need be.  Then do a Mixdown of the completed show and deliver.

    Leaving out the details, but that is the basic idea.

    Jef

    Avid DS 11.0.2 R.I.P | MC "Well, it depends ..." | OS 10.11.x - various MacPro Towers - home system MacPro Dual 2.8 8core GTX680 "Harpertown"... [view my complete system specs]

    _____________________________________________

    Jef Huey

    Senior Editor

    Old Stuff  http://vimeo.com/album/3037796

  • Tue, Jan 26 2016 3:48 PM In reply to

    Re: Mixed camera formats

    Yes, that is how I have been doing the edit. I multi cam first then go back and bring in the transcoded clips on a seperate track whereby I have frame flex. 

    However one question remains, since both are listed as 3840x2160 on import why are they showing different aspect ratios? Am I squeezing the picture on the sony?

    Look at how they show up in source and composer windows.

    MC Version: 2018.2 System: PC windows 7 Pro 64 bit, Workstation ATX mid Tower case, MSI Z87-G45 MBoard, 650 watt,Crucial M500 250GB SSD, Intel i7-4770K... [view my complete system specs]


    MC 8.4.5     Built Workstation-Windows® 7 Professional, 64bit,/ Intel® CoreTM i7-4770K processor/ NVIDIA Quadro K2000D 2GB/16GB Dual Channel DDR3 SDRAM at 1600MHz /MSI Z87-G45 Mother Board/650 Watt Power/ Super Multi Blue Writer (LG BH12LS38)/ AVID C-400 for audio interface  Pro Tools MP

     

     

     

  • Tue, Jan 26 2016 7:54 PM In reply to

    Re: Mixed camera formats

    SOLVED

    The problem was in the transcoding from Sony Mpg4 to QT using encoder. I forgot to look at the video settings for aspect, it was set to D1 at 0.9 instead of square 1:1.

     

    MC Version: 2018.2 System: PC windows 7 Pro 64 bit, Workstation ATX mid Tower case, MSI Z87-G45 MBoard, 650 watt,Crucial M500 250GB SSD, Intel i7-4770K... [view my complete system specs]


    MC 8.4.5     Built Workstation-Windows® 7 Professional, 64bit,/ Intel® CoreTM i7-4770K processor/ NVIDIA Quadro K2000D 2GB/16GB Dual Channel DDR3 SDRAM at 1600MHz /MSI Z87-G45 Mother Board/650 Watt Power/ Super Multi Blue Writer (LG BH12LS38)/ AVID C-400 for audio interface  Pro Tools MP

     

     

     

  • Wed, Jan 27 2016 4:05 PM In reply to

    • jef
    • Top 50 Contributor
    • Joined on Sun, Feb 26 2006
    • Maryland
    • Posts 3,237
    • Points 39,280

    Re: Mixed camera formats

    Good catch.  AME's interface is weak in that area.  Otherwise I do like it generally.

    Jef

    Avid DS 11.0.2 R.I.P | MC "Well, it depends ..." | OS 10.11.x - various MacPro Towers - home system MacPro Dual 2.8 8core GTX680 "Harpertown"... [view my complete system specs]

    _____________________________________________

    Jef Huey

    Senior Editor

    Old Stuff  http://vimeo.com/album/3037796

Page 1 of 1 (7 items)

© Copyright 2011 Avid Technology, Inc.  Terms of Use |  Privacy Policy |  Site Map |  Find a Reseller