• Adobe Premiere Pro

  Please can anyone advise – combine interlaced and progressive

  Posted by Louis Shula on June 30, 2012 at 12:37 pm

  Please please can anyone help me with this? I’ve posted it twice before now but haven’t got a response.

  I want to combine 25p and 50i avchd footage in premiere cs5 using a macbook pro, and then export and burn to dvd to play on this: toshiba 19dv 500b 19 inch wide screen hd ready lcd tv and dvd player

  i need advice on how best to combine interlaced and progressive footage and correct export settings to use to play on that machine.

  Eric Jurgenson replied 13 years, 10 months ago 4 Members · 6 Replies
• 6 Replies

• 

  Bernhard G.

  June 30, 2012 at 2:03 pm

  Hello,

  In Your situation I would consolidate everything to 1080p/25.
  In practice this means You are editing in a 1080p/25 timeline.

  At the end, send Your SD-sequence to AME for (progressive) DVD encoding.

  Unfortunately PremierePro does use by far the worst method for de-interlacing!;
  meaning it drops the half of the image information away and interpolates only one of two fields.
  If You want a better quality, there is the re-vision plugin FieldsKit for de-interlacing.

  In a perfect world I would edit in 1080i/25 and let FieldsKit convert the progressive video to
  interlaced; and encode the DVD to interlaced; upper field first. Why?
  Progressive DVDs are always a risk since they aren’t standardized, so there is no guarantee the TV-set gets the information ‘progressive’ from the DVD-Player…

  You see, it’s a very complex topic…

  Best regards.
• 

  Louis Shula

  June 30, 2012 at 4:47 pm

  Hi Bernhard,

  Thanks for replying to me.

  I’m really new to this so I wonder if you could break it down a bit more?

  The files come out of the camera as .mts files. Should I use AME first to directly convert all of them to 1080p before putting them in the 1080p/25 timeline? as an mp4 or .mov file?

  Would the deinterlacing then happen there in the file conversion?

  When you say use AME to encode to progressive DVD what export settings should I use to do that?

  Also the files are MASSIVE – 50mb for a 15 second clip. What do I do about this?
• 

  Bernhard G.

  July 1, 2012 at 9:28 am

  Hello,

  AME’s de-interlacing is as worse as inside PP.
  So it makes no difference.

  For DVD-encoding simple choose the MPEG2 DVD anamorphic preset.

  Regarding to the ‘massive ‘ data amount’:
  we professionals simply have other scales what ‘massive’ is…

  Uncompressed 10bit HD with 2,25GB for 15sec. is ‘massive’.
  High-End intermediates (ProResHQ or DNxHD) with 345MB for 15sec.
  are a very acceptable compromise.

  My advice: put the datarate of Your AVCHD cams to the maximum – AVCHD is worse enough.
  Buy a 2TB HDD only for editing!

  Best regards.
• 

  Louis Shula

  July 1, 2012 at 1:08 pm

  Thanks Bernhard!
• 

  Chris Tompkins

  July 1, 2012 at 10:41 pm

  Start with a 25p sequence, drop some 50i footage in there with the 25p footage, export a couple minutes to create a test DVD or bluray.

  Then make a new sequence 50i, put some 50i footage in there and then add some 25p footage in there, export a couple minutes for a test.

  Chances are one of them is going to look just fine for you.

  I too, on occasion, have to mix i and p and it works out fine.
  Only Deinterlace when compressing final master for web delivery or computer presentation.

  Chris Tompkins
  Video Atlanta LLC
• 

  Eric Jurgenson

  July 2, 2012 at 1:00 pm

  Chris is on the right track here. You should NOT edit in a progressive sequence. Progressive footage looks fine in an interlaced sequence, whereas interlaced footage looks bad in a progressive sequence due to deinterlacing artifacts (lower vertical resolution, increased judder).

  If you have a choice, edit mixed progressive and interlaced footage in an interlaced sequence.

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