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Need Clarification on AVCHD render quality
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transcoding to another codec just to grade is usually not a perfect solution as you get generation loss. the better alternative is a proxy. you can preview grades directly on proxies if their bitrate is high enough.
As for rendering previews, you only have 8 bit video so changing your sequence to a custom 10 bit preview codec won’t help any either. if you do have 10 bit AVHD, then you would need cineform 10bit preview with a 10 bit monitor.
if you do any major grading or compositing, you will need to enable maximum bit depth in the render setting. If you do any resizing, max quality.
if you don’t enable max bit depth, your premiere color engine will clamp all container compositing values in the 8 bit range, and you could get banding.
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What if I have an 8 bit avchd and I make a proxy? Should I just keep it in avchd since it’s already 8bit? My concern was something I read being washed out colors if I tried color correcting and grading with avchd 8bit footage. But maybe that’s wrong.
I don’t see maximum bit depth in render settings but I see that on export.
Bryce
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Effects (including colour correction) in PPro are calculated in 32-bit float. This isn’t going to improve the quality of 8-bit material but it does mean that inserting an upconversion stage (prores transcode or proxies) for quality reasons makes no sense.
Prores is useful for archive and reducing stress on systems (it’s less CPU intensive). The idea that it will increase bit depth giving you more latitude for colour correction is a myth that will apparently never die.
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Rendering as in making preview files to play timeline in real time is Non-destructive.
Exporting that timeline is a whole different matter.———————————————–
Adobe Certified Expert Premiere Pro CS6/CC
Adobe Community Professional -
But since I have an i7 quad core processor with 1GB of vram and GPU cuda with 16GB of ram I don’t see how I’m putting stress on my CPU. Everything plays back fine.
Bryce
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