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S
Shas Studio Inc.
Participant
September 10, 2020
Question

I would like to understand a rendering function. Please advice

  • September 10, 2020
  • 4 replies
  • 190 views

Hi there,


Thank you very much for taking your time about my question.

I have a question about adobe premier pro specifically rendering. Please advice what your thoughts are.

 

I have the highest-spec i-Mac for editing and I am working on a project by using an after effect and premier pro. My editing is for 10min shooting Full-HD size video. *The shooting material is also Full-HD. And the video is not complexity on premier pro and after effect. For instance, I am using 6-10 layers on video sequence and 5 layers for audio sequence. I just use a simple text title for after effects.

 

Based on the above information, I have a question about rendering function.

I understand that Adobe Premiere Pro attempts to play back any sequence in real time and at full frame rate. Do you think I do not need a rendering if my premier pro with i-Mac(high spec) shows a red render bar appearing in the time ruler of sequence indicates?

 

My question is

If I leave a red render bar appearing in the time ruler of a sequence indicates an unrendered section, it does mean I should render an appearing section even if my i-Mac is high spec?

 

Or it may sometimes happen that the video can not play back in real time and at full frame rate?

And what else there is any possibility that an error could occur if I do not render ?

 

I would like to make a clear deeply what is the rendering function for. As I mentioned in the beginning, I understand basic function for render.

Actually I could preview my video smoothly with a red render bar. But does it mean I do not need a render for preview in spite of a red render bar exsits?

 

My i-Mac spec is below

iMac with Retina 4K display.

3.2GHz 6-core 8th-generation Intel Core i7 processor, Turbo Boost up to 4.6GHz

32GB 2666MHz DDR4 memory

Radeon Pro Vega 20 with 4GB of HBM2 memory

1TB SSD storage

And upgraded with 3.2GHz 6-core 8th-generation Intel Core i7 processor, Turbo Boost up to 4.6GHz and 32GB 2666MHz DDR4 memory.

 

This topic has been closed for replies.

4 replies

Warren Heaton
Community Expert
Warren HeatonCommunity Expert
Community Expert
September 11, 2020
  • Transcode all of your source footage to Apple ProRes422 LT.  At 1080p, you will need about 700GB per minute for storage.  A USB3 external drive should work fine, but a Thunderbolt SSD drive will better match the bandwidth of your internal drive. 
  • Set your Sequence Video Previews to Apple ProRes422 LT.  For cuts-only editing, you will see no render bar at all.  When applying Transitions and Effects you are likely to see Yellow instead of Red.

 

When you're ready to export, if you opt to create an Apple ProRes 422 LT edited master, you'll be taking advantage of Smart Rendering in Premiere Pro and your exports will be very, very fast.  You can, of course, opt to send your Sequence to Media Encoder and export to whatever your delivery settings are (H264 is hardware accelerated on your iMac).

 

As far as the Red Line is concerned, it's just Premiere Pro indicating that it has low confidence that the video will play smoothly.  If it's still playing while red, you don't need to render.

 

Pretty much any Mac from 2012 or newer is good for 1080p ProRes editing.  Your iMac should also handle 2160p ProRes as well.

 

 

 

-Warren

    R Neil Haugen
    R Neil Haugen
    Legend
    September 10, 2020

    Premiere's warning bars ... green, yellow, red ... are guestimations. They may or may not be accurate.

     

    I've some sequences that will show yellow and still drop frames/stutter on playback, and others that are red in sections that playback perfectly.

     

    So ... it's often good to 'render' the red areas. May be useful to render yellow areas. And it all depends ...

     

    Neil

    Everyone's mileage always varies ...
      S
      Shas Studio Inc.Author
      Participant
      September 10, 2020

      Hi Ann, Thank you for your quick response and the link. It was very helpful.
      I am sorry for the wrong infromation about my machine. 
      What I have a machine is the below,

      10.15.6 (19G2021)
      2.3 GHz 18-Core Intel Xeon W
      256 GB 2666 MHz DDR4
      Macintosh HD
      Radeon Pro Vega 64X 16 GB
      C02D204BM0XV

      Do you think same thing?

       

      Ann Bens
      Community Expert
      Ann BensCommunity Expert
      Community Expert
      September 10, 2020

      Your machine is not super high tech.

      Video card has but 4 gig of vram. 8 or higher is prefered.

      So yes when timeline is red: render.

      Red, yellow, and green render bars and what they mean | Adobe Blog

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