Interlaced-type of video distortion (picture)

Compression Techniques

Interlaced-type of video distortion (picture)

Posted by Clint Milner on February 27, 2009 at 9:11 am

Hi All,

This is my first post in this forum, but I’m sure you all can shed some light.

I have some AVCHD (PAL 1080p) footage that I was trying to edit in Premiere Pro CS4. That wasn’t working too well, so I had some advice to encode to Mpeg-2 for Blu-ray so Premiere could handle it better.
So in Adobe Media Encoder I chose (HDTV 1080i 25 High Quality) and it seemed to work.

Using Encore I built a DVD with those sequences imported via Dynamic Link.

It took all night to transcode and I get this distortion during fast movement.

This distortion occurs on my TV and PC. My DVD software on my PC had this pop up and if I turn off CLEV-2 & Smart Deinterlace, the footage is clean again.

Does anyone have any suggestions? Is there another Mpeg-2 for Blu-Ray preset I should try?

Many, many thanks,
Clint

Llewelyn Roderick replied 17 years, 5 months ago 5 Members · 7 Replies
7 Replies

Daniel Low
February 27, 2009 at 11:22 am

So you shot 1080p and encoded using a preset expecting 1080i?

Looks like you’re trying to deinterlace progressive source content.

__________________________________________________________________
Fonts are like cologne:

A bad choice speaks louder than a good one.
Clint Milner
February 27, 2009 at 11:35 am

Yeah, stupid me.

I’m trying to find a solution that works using my footage that I shot with my Panasonic HDc-HS9 PAL (1920x1080p / 1080p 25)
and
Premiere CS4.

AVCHD can be read my CS4, but playback is jerky and impossible to get anything done. I’ve heard that is because the AVCHD compression is very complex and it bogs Premiere to a hault.

Any advice?

Many thanks,
Clint
Chris Blair
February 27, 2009 at 3:30 pm

Isn’t there a preset to convert it to blu-ray HD progressive instead of the 1080i? As Daniel points out there’s no reason to go to interlaced in the MPG2 Blu-Ray from the progressive AVCHD.

Chris Blair
Magnetic Image, Inc.
Evansville, IN
http://www.videomi.com
Daniel Low
February 27, 2009 at 3:52 pm

The Cineform codec is the ideal solution here but it’ll cost you.

https://www.cineform.com

__________________________________________________________________
Fonts are like cologne:

A bad choice speaks louder than a good one.
Tod Hopkins
February 27, 2009 at 4:07 pm

Convert to DVCProHD?

Are you sure it’s the codec and not drives or other issues. Do other 1080 codecs play fine? It could just be that you don’t have the horsepower for 1080.

Tod Hopkins
Hillmann & Carr Inc.
Washington, DC
Clint Milner
February 27, 2009 at 4:13 pm

Below is a screenshot of my test file 00000.m2ts
For some reason, these are all the export settings available.
(Ignore the first setting, that was my last attempt)

I thought that HDTV 720p 50 HighQuality would have worked, but when I changed the dimentions to 1920×1080, the Interlaced field order popped up again (yellow box). It will do 1280×720 as Progressive, but being a bit new to this, I’m not sure what to do.

Does this screenshot help at all?

Many thanks for all the posts.
Clint
Llewelyn Roderick
March 26, 2009 at 9:18 pm

Hey Daniel

I’ve been reading up on the cineform (Neo HD) for mac. Have you used it? Can you tell me about your experiences? Do you know if it can convert DPX files to Prores or Cineform for that matter?
cheers

Llewelyn

Llewelyn @ Fireworks
HD for indies post production
http://www.fireworksfilms.co.za

8Core 2.8Ghz 10GB RAM with BM Decklink HD Pro, 2TB Raid, 20″ Sony PAL SDI CRT & 19″ Sony HD SDI LCD + 4Core 3Ghz edit 2

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