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Activity Forums Adobe Premiere Pro 1080i50 to 576i

  • 1080i50 to 576i

    Posted by Michael Duff on September 21, 2013 at 3:22 pm

    hey guys,
    I just want to check if I’m doing this the best way. I have 1080i50 footage shot on an EX3 and I need to deliver a 720x576i file. I’ve got my sequence set the same as the source footage. Then when I export I am changing the settings in the premiere export window to what I need. (720×576, Pal widescreen PAR, Upper field first).

    I mostly want to ask if this is effecting the interlacing? or am I getting exactly the same interlacing motion as in the source footage just in a smaller frame size.

    Thanks!

    Michael Duff replied 12 years, 7 months ago 3 Members · 5 Replies
  • 5 Replies
  • Ann Bens

    September 21, 2013 at 6:43 pm

    First set your playback to upper field. That will get of the interlacing in the preview window.

    Dont export to dv avi, you can select upper (in previous versions) but in fact it will exported to lower.
    Export directly to mpeg2-dvd upper field.
    Import that into Encore for authoring dvd (if that is the end product)

    ———————————————–
    Adobe Certified Expert Premiere Pro CS6
    Adobe Community Professional

  • Michael Duff

    September 21, 2013 at 7:24 pm

    Hi,
    Thanks for the response.

    Playback is set to upper field first to match source footage (XDCAM 1080i50 35mbs) .

    I’m not exporting to DVD. Just exporting either uncompressed or high bitrate h264. I just am not sure if I export it with a frame size of 720×576 and set fields to upper field first, is this a true resizing of the footage keeping all the interlacing intact. Or is it de-interlacing to do the scale, and then re-interlacing on the output?

    Basically, I don’t want to lose the temporal resolution that I get from 50 fields/sec

    thanks!

  • Marcin Grabos

    September 22, 2013 at 12:55 am

    I guess, that you confused about handling interlace by Premiere because of bluriness in the output. Good method to avoid this, is checking box “use maximum render quality”. This will increase render time, but exported image should be sharper.

  • Ann Bens

    September 22, 2013 at 10:59 am

    What do you want the file for.
    Uncompressed or H.264 is quite a big difference.
    Either way you are scaling down. You only have to check Max Render Quality if you do not have MPE hardware.

    Basically, I don’t want to lose the temporal resolution that I get from 50

    fields/sec
    no idea what you mean by that. 25 frames per second (PAL) is either interlaced (50 half fields) or progressive (25 whole fields)

    ———————————————–
    Adobe Certified Expert Premiere Pro CS6
    Adobe Community Professional

  • Michael Duff

    September 22, 2013 at 2:02 pm

    no idea what you mean by that. 25 frames per second (PAL) is either interlaced (50 half fields) or progressive (25 whole fields)

    yes, but 50i has a greater temporal resolution than 25p. ie You are capturing more moments in time per second so it is often regarded as a better format for sports or fast action shooting.

    I’ve shot in 1080i50 and I just want to be sure that premiere isn’t destroying the original fields when I scale down to 576i. So regardless of whether it is uncompressed, h264 or any other codec I was just trying to find out about if the fields are retained.

    I’ve since done a few tests and as far as I can tell the fields do remain intact.

    Michael Duff –
    Bearcage Productions, Australia
    http://www.bearcage.com.au

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