Latest post Thu, Jul 31 2014 1:12 PM by smrpix. 4 replies.
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  • Wed, Jul 30 2014 2:12 PM

    • iedjie
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    Batch import on 2 hour multicam sequence without losing the original sequence

    Hi,

    I've been asked to help on a tricky task. A 2 hour multicam sequence, (4 camera's), exists of 1 720p25 stream and 3 1080i50 avchd streams. Tha 3 1080i50 streams were transcoded to 720p25 but show interlace artifacts. The project format is 720p25.

    I would like to change the project format to 1080i50 and than batch import the 3 1080i50 clips from the original avchd files and than export the multicam sequence in QTref (1080i50 format) and convert it in Sorenson Squeeze into a 1080i50 mpg-2 for further distribution.

     

    Question;

    In case things go wrong I would like to keep the 720p25 sequence including the transcoded 1080i50 clips. If I make a new project in 1080i50 and open a copy of the 720p25 sequence inhere, would a batch import in this new project also effect the original sequence in the other project? Or can I eperiment without fear?

     

    Second question;

    What is the best workflow to change interlaced footage into progressive? Obviously simply transcoding does not do the job well. I found out that applying a fluid motion effect, (set to interlaced source, progressive output) works really well but takes a long time to render. Or would a way to go be, editing in 1080i50 format and than later in Squeeze apply the de-interlace filter?

     

     

    thanks ahead!

     

     

    mobo MSI P55-GD65, CPU Intel i5-750 @ 3.2 Ghz, memory G.SKILL F3-10666CL7D 2x4GB, Videocard Nvidia Quadro FX 3700, PSU OCZ 500MXSP, Harddisks; Crucial... [view my complete system specs]
  • Wed, Jul 30 2014 4:15 PM In reply to

    • smrpix
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    Re: Batch import on 2 hour multicam sequence without losing the original sequence

    You may be looking at simply relinking a copy of your final sequence to the source footage, but let's see what you're actually working with.

    Was the original footage imported or AMA'd? 

    At what stage was the 1080 footage transcoded to 720?  Before ingest, after ingest, before editing, after editing?

     

  • Wed, Jul 30 2014 9:33 PM In reply to

    • iedjie
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    Re: Batch import on 2 hour multicam sequence without losing the original sequence

    Before editing, the 3 1080i50 clips were AMA linked and than transcoded into 720p. They did not notice the interlace artifacts. You actually only notice that when you park on a frame with horizontal movement in it. You than see the edges of the other field in a blurry way. Exporting this gives a messy results in other programmes like Sorenson or AE!

    But my main question is;

    "If I make a new project in 1080i50 and open a copy of the 720p25 sequence inhere, would a batch import in this new project also effect the original sequence in the other project?"

     

    The second question is more out of interest

     

     

    mobo MSI P55-GD65, CPU Intel i5-750 @ 3.2 Ghz, memory G.SKILL F3-10666CL7D 2x4GB, Videocard Nvidia Quadro FX 3700, PSU OCZ 500MXSP, Harddisks; Crucial... [view my complete system specs]
  • Thu, Jul 31 2014 10:46 AM In reply to

    • iedjie
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    Re: Batch import on 2 hour multicam sequence without losing the original sequence

    BUMP

     

    "If I make a new project in 1080i50 and open a copy of the 720p25 sequence inhere, would a batch import in this new project also effect the original sequence in the other project?"

    Any body?

    mobo MSI P55-GD65, CPU Intel i5-750 @ 3.2 Ghz, memory G.SKILL F3-10666CL7D 2x4GB, Videocard Nvidia Quadro FX 3700, PSU OCZ 500MXSP, Harddisks; Crucial... [view my complete system specs]
  • Thu, Jul 31 2014 1:12 PM In reply to

    • smrpix
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    Re: Batch import on 2 hour multicam sequence without losing the original sequence

    Since your transcode from 1080i to 720p changed the edit rate, you're probably out of luck. You would have gotten a warning when you initially transcoded.

     

    You can try this:

    Switch your project to 1080i/50

    Duplicate your sequence into a new bin.  Select the duplicated sequence.

    optional but useful: Right click and choose commit multicamera edits

    Open every bin with the AMA'd footage and highlight all the clips.

    Right click on the duplicated sequence in the new bin and choose relink. 

    Choose selected items in all open bins

    Set your timecode and source name options appropriately

    choose create new sequence

    choose OK.

    Everything should come up with the original footage.  Your original sequence is untouched if there is an error.

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