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Loss of Quality on Exporting from Premiere Pro 2
I have been experiencing a huge lose of quality (video goes from crisp and clean to blurry and artifacted) when exporting from DV AVI to MPEG2. There is a slight loss of quality in Premiere Pro 2.0 generated titles when exporting from the timeline as DV AVI.
The title appears to be blurry in the final render. This problem also occurs when exporting animations (created in After Effects) edited into the final rendered DV AVI as well. There is also noticable loss in the footage quality.
When exporting this final rendered DV AVI as an MPEG 2, the MPEG file has highly noticeable image loss, again, in titles and animations as well as the footage.
I’m editing commercials for broadcast which get uploaded to DGS Fastchannel for distribution to stations. I’m editing on a Microsoft Windows XP Professional System (version 2002 service pack 2) It has Intel Core2 CPU (6600@2.40GHz 2.40GHz, 2.00 GB of RAM)
The final spots quality, when viewed next to other spots is now EXPONENTIALLY worse! This issue is far beyond normal generation loss. The footage is digital all the way through the process. Project settings are as follows:
DV NTSC
29.97
720×480 4:3
D1/DV NTSC (0.9)
Lower Field First
30fps Drop-Frame Time CodeRender Settings:
File Format: DV NTSC
Compressor: DV NTSC
Color Depth: Millions of Colors
Optimize Stills is checkedIf ANYONE has any solutions, hints or suggestions they would be Greatly Appreciated! Thanks.
JCS
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16 Replies
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What encoding settings did you use and what is the duration of the time line?
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The durations of the spots range from :05 seconds to :30 seconds.
The encoding settings are as follows:
Video Codec Main Concept MPEG Video
NTSC
720X480
29.97 Non-Drop
Upper Field First (required by DGS Fastchannel)
standard 4:3
Quality 5.0
Profile: Main
Level: Main
VBR, 2 pass, Min 10.00, Target 15.00, Max 15.00[Mbps]
GOP Settings: M-3 N-15 Automatic GOP Placement
Advanced Settings:
Macroblock Quantization 10
VBV Buffer 112
Noise Control- Sensitivity
Write SDE- No
Force VBV delay- Oxffff
Intra DC Precision 9 bitsJCS
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Try it with CBR 8 Mbps. Your settings are way out of spec.
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Thank You very much I will try it and keep you posted.
JCS
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Out of curiosity, what are the specific file requirements for delivery besides the upper field first?
TimK,
Director,
Kolb Productions,Creative Cow Host,
Author/Trainer
http://www.focalpress.com
http://www.classondemand.net -
Encoding: MPEG-2
Min: 10Mbs
Max: 25Mbs (system only goes to 15Mbs)
Preferred: 25Mbs
Scanning: 480 60i(upper field first)
PAR: 0.9
Aspect Ratio: 4:3
Chroma-Min: 4:2:0 (MP@ML) (720×480)
Chroma-Preferred: 4:2:2 (422P@ML) (720×512)
GOP: All Allowed, IBBP preferred
FPS: 29.97
Stream Type: Program Stream
Luminance Level Max: 100 IRE
Chroma Level Max: 120 IRE
Setup Level: 7.5 IRE
Non-Drop TimecodeJCS
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I think you need to export the stuff as a master clip and use a higher end transcoder. The Adobe Media Encoder is specifically intended for distribution level exports.
You have a production-level MPEG spec there with a preferred bitrate of 25 Mb/s and preferred color sample of 4:2:2.
TimK,
Director,
Kolb Productions,Creative Cow Host,
Author/Trainer
http://www.focalpress.com
http://www.classondemand.net -
Thanks for the help sir. Do you have any suggestions on which encoder might work best for this purpose? Any help would be greatly appreciated.
JCS
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QuickTime with the MPEG codec might do it. I haven’t tried myself, but maybe you can get higher data rates that way.
-jeff
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I suspect that ProCoder from Canopus, or its big brother, Carbon from Rhozet could do whatever you want. I use ProCoder all the time.
QT Pro is reasonably priced (at 29.95 USD), so just having that in general is a good idea. Trying that first would be a good first step, but make sure you aren’t setting the output for MPEG 4 (H.264) unless your distribution requirements allow for it.
It’s important to understand that MPEG is a broad set of specifications outside of the rather narrow slice of DVD specs that can run at extremely high data rates and have exceptional image quality. HDcam SR runs at 440 Mb/s or 880Mb/s…and is MPEG-4 compressed.
TimK,
Director,
Kolb Productions,Creative Cow Host,
Author/Trainer
http://www.focalpress.com
http://www.classondemand.net
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