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#1 |
Major Player
Join Date: Jun 2007
Location: New Orleans, LA
Posts: 410
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Compressor rendering artifacts.
I've been experiencing some artifacting in random places with compressor. When I finish my current job, I'll upload some samples, but for now, I'll try to describe it. It seems like a steady pulse every second where the image goes from crisp to blocky. It does it random places for less than a minute.
My workflow is to edit in FC, export the timeline as a reference quicktime and then open it in compressor using the DVD 120 minute Best template. These artifacts can not be seen in FC or the reference movies, so Compressor has to be the culprit. I'm using an 8-core Mac Pro and have Qmaster running on 4 of them. The only fix I have found is to export the timeline from FC using Compressor. I have not been able to duplicate the artifacting this way. While it does work, it means I can't do anything in FC until it finishes. Any thoughts? |
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#2 | |
Regular Crew
Join Date: Feb 2007
Location: Sunnyvale, CA
Posts: 131
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Quote:
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#3 |
Major Player
Join Date: Jun 2007
Location: New Orleans, LA
Posts: 410
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These are the settings that were used in Compressor:
Name: MPEG-2 5.0 Mbps 2-pass Description: Fits up to 120 minutes of video with Dolby Digital audio at 192 Kbps or 90 minutes with AIFF audio on a DVD-5 File Extension: m2v Estimated file size: 4.42 GB Type: MPEG-2 video elementary stream Usage:SD DVD Video Encoder Format: M2V Width and Height: Automatic Selected: 720 x 480 Pixel aspect ratio: NTSC CCIR 601/DV (16:9) Crop: None Padding: None Frame rate: (100% of source) Selected: 29.97 Frame Controls On: Retiming: (Good) Frame Blending Resize Filter: Linear Filter Deinterlace Filter: Better (Motion Adaptive) Adaptive Details: On Antialias: 0 Detail Level: 0 Field Output: Same as Source Start timecode from source Aspect ratio: Automatic Selected 16:9 Field dominance: Automatic: Selected Progressive Average data rate: 5 (Mbps) 2 Pass VBR enabled Maximum data rate: 6.3 (Mbps) High quality Better motion estimation Closed GOP Size: 15, Structure: IBBP DVD Studio Pro meta-data enabled |
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#4 |
Major Player
Join Date: Jun 2007
Location: New Orleans, LA
Posts: 410
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The problem seemed to have stopped, but not its back.
I am capturing HDV and converting it to ProRes 422, editing it in FCP, exporting a Quicktime reference file, opening it in Compressor and using the 120 minute Best setting. I've been doing the same thing for months with no issues. I noticed it would always happen when I would use the cluster to render. When I leave it to "This computer", the problem seemed to stop. I pulled a piece of the video file out and rendered it as a quicktime file and posted it here: www.chaddyleproductions.com/video/sample.mov (Right click and "Save As"). I would appreciate any help with this. -Chad |
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