Transcoding Lesson Learned

[James Drake]

I couldn't figure out why a recent batch of files was taking 10-15x longer than the normal 1:1 with a RR to render from R3D to Prores. The footage is RC 12:1 4kHD.

Turns out there was a very tiny minor adjustment made in Alchemy, causing the renders to take MUCH longer.

Good to know.

 

[Andrew Gentle]

Turns out there was a very tiny minor adjustment made in Alchemy, causing the renders to take MUCH longer.

You mean RED made a change with how Alchemy works or were you able to change your Alchemy settings to achieve a shorter render time?

 

[Todd T]

What were the settings values that caused the problem, and what did you change to fix it?

 

[jimhare]

I'm guessing it was the difference between having Alchemy on or off. It grinds to a halt using Alchemy but you can get a really nice look!

 

[James Drake]

I wasn't able to tweak anything to better render time, save turn alchemy completely off.

 

[brett mayfield]

I also found that rotating a clip caused the clip to take almost 10x as long to process out, all other settings remaining the same.

 

[Björn Benckert]

The alchemy demands no rocket render. So best is to use it (if you want to use it) only for XLM renders / selected takes.