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Unwanted “Low resolution”-effect on diagonal edges when encoding H.264
When exporting this clip from Premiere in H.264 I get some weird “low resolution”-effect on diagonal edges in the film. If I’m using a non-compressing codec like Quicktime Animation theres no distortion at all. I have tried to increase the bitrate but it don’t seem to matter – it’s the same. Also try using Adobe Media Encoder with the exact same results. The problem is the same throughout the while film…
What am I missing doning wrong?
Thanks
~ Johan -
16 Replies
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Hi Johan,
Could you post a screenshot of your export settings?
Vince Becquiot
San Francisco Bay Area
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Yes, here’s the settings from Adobe Encoder unforunally it’s in Swedish.
Thanks
~ Johan -
This looks like the previous image 🙂
Vince Becquiot
San Francisco Bay Area
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Sorry(!) here it is:
Thanks
~ Johan -
My Swedish is a little rusty:-) But it looks like your sequence in upper field first and your export is progressive, so that’s
most likely where the pixelation is coming from. I would go back to the sequence and change it to progressive and export again, that should fix your issue.Let us know how that goes.
Vince Becquiot
San Francisco Bay Area
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I thought you where right on it, maybe you are, but the settings seem to be set to Progressive…
Thanks
~ Johan -
Hmm, are you sure that’s the same sequence? Look at your export screenshot, doesn’t it say upper in your source setting?
Vince Becquiot
San Francisco Bay Area
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Oh wait, I think I got it, you were exporting the clip directly, not the sequence, correct?
Vince Becquiot
San Francisco Bay Area
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You’re on to something here. It seem like the source clip that I exported from After effects (which is a uncompressed .mov with codec “Animation) is upper fields because “Övre” means Upper.
But I can find a field setting in AE?
Thanks
~ Johan -
In AE, in your render queue window, click on render settings and under time sampling, make sure that field render is off.
Vince Becquiot
San Francisco Bay Area
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