Burnins: DNxHD profiles handling

[iLLiCiTiT]

Issue

When DNxHD input is passed to burnins script it won't use input's profile so may crash because default profile is used in that moment which has different requirements for bitrate and resolution so conversion fails.

Changes

• use dnxhd profile from input metadata

How to test

• set ffmpeg arguments in extract review to create dnxhd output with profile different thant dnxhd
  • example:

   "output": [
      "-codec:v dnxhd",
      "-profile:v dnxhr_lb",  # This is important line
      "-pix_fmt yuv422p",
      "-b:v 36M"
  ]
  

• add burnins tag on the output
• check if burnins crash

[64qam]

looks good