Hi Tamir,
Can you confirm issue you see is specific to amazon ec2? Does it reproduce on a specific clip or any clip? Please send me exact reproduction steps so that I can have this reproduced internally.
Unfortunately I can’t confirm this issue is specific to ec2.
The problem is specific for a clip, I will send it to you by mail.
I did test it on my desktop with GTX 1080Ti and decoding works as expected on this clip.
My desktop is running windows 10, ec2 is running windows server 2016 datacenter.