How do I avoid or get rid of thin green line bordering my video in Compressor?

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Level 1

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How do I avoid or get rid of thin green line bordering my video in Compressor?

Hello!

This is my work flow:

Edited an 18 minute 1920 x 1080 ProRes video on FCP 7, exported a master video file ProRes 422 self-contained QT movie, sent to Compressor (tried Best DVD 90-minutes and ProRes codec settings) to prepare files for a SD DVD in DVD Studio Pro.

My issue: I am getting a THIN GREEN LINE bordering my entire video on the Compressor file.

My master video file is perfect, no green line, however once it's gone through Compressor (tried both Best DVD 90 minutes and ProRes codec settings) the video has a thin green line that I can see in the DVD Studio Pro preview and simulation. The burned DVD also has it.

I would like to author the work in DVD Studio Pro as it is a looping video work for exhibition so I have the video file 6 times on the DVD rather than have it re-start at first track every time.

Seems like it has to do with downscaling the 1920 x 1080 video to SD for DVD.

Searched the web and there doesn't seem to be a clear explanation for it besides this discussion about 16s but doesn't clarify in regards to the problem downscaling to SD DVD.

Thanks so much to anyone with the magic answers!

MacBook Pro (15-inch 2.4/2.2 GHz), OS X Mountain Lion (10.8.5), FCP7>Compressor3.5>DVD Studio4.2

Posted on Feb 27, 2014 2:01 PM

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Answer 1

Ystoner Author

Level 1

0 points

Feb 27, 2014 3:16 PM in response to Ystoner

Also, it seems like the green line only shows up during playback on Apple's DVD Player application but not when played on a DVD device. Strange.

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Answer 2

Shane Ross

Level 8

43,110 points

Feb 27, 2014 3:28 PM in response to Ystoner

Not sure what that is, but it is something you might only see on computer screens due to what is called OVERSCAN. The reason you have ACTION SAFE guides is because most TVs, including HDTVs, cover a lot of the edge of the picture. The plastic part that holds the screen in place. CRT TVs cover more than HDTVs, but a portion of the edge is still covered. Computers don't have that issue, the displays are made differently, so you see all the way to the edge.

So no one will ever see this, unless they play it on a computer.

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Answer 3

Nick Holmes

Level 7

30,018 points

Feb 27, 2014 4:20 PM in response to Ystoner

>prepare files for a SD DVD in DVD Studio Pro.

My issue: I am getting a THIN GREEN LINE bordering my entire video on the Compressor file.

My master video file is perfect, no green line, however once it's gone through Compressor (tried both Best DVD 90 minutes and ProRes codec settings) the video has a thin green line that I can see in the DVD Studio Pro preview and simulation. The burned DVD also has it.

PAL - 1080 / 576 = 1,875

NTSC - 1080 / 480 = 2,25

DVDs are standard definition, so your original file has to be compressed to those pixel dimensions. As you can see above the number of HD horizontal lines don't divide by an even number into SD horizontal lines, so you get partial lines left over that the TV system doesn't really know how to interpret - that's the green bit.

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Answer 4

Feb 28, 2014 6:42 AM in response to Ystoner

try chaning the resize filter to best in the frame controls panel to best in compressor. No idea if it'll help, but worth a shot. I rarely if ever author pal dvd's, but this definitely doesn't happen when I author NTSC dvd's with compressor and dvdsp.

another idea, you might try cropping a pixel on all sides in the geometry panel in compressor.

I have gotten a green line on one side of quicktimes when I've made 16x9 quicktimes with square pixels from standard def anamorphic DV footage. Compressor was automatically resizing to 853x480. When I changed the target size to 854x480, the problem disappeared. Tore out a fair amount of hair trying to solve this.

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