How to run this ffmpeg command lines in hybrid？

[Selur]

Hybrid will not use ffmpeg for audio filtering.
Hybrid will not create a 'out_mp4' folder.
That said, it looks like you want to reencode and slow down the first audio stream and pass-through the video while changing its frame rate to 24fps and then create a .mp4-file with faststart enabled.
Passing through the video and setting the fps to 24 can be done by:

• setting 'Base->Processing->Video' to 'passhtrough'
  
• setting 'Muxing->Frame rate' to 24
  

Reencoding the audio to aac and changing the speed by 0.8 can be done by:

• setting 'Base->Processing->Audio' to anything but '
  
• enabling 'Audio->Base->Audio Encoding Options'
  
• settings 'Audio->Base->Audio Encoding Options->Encoder->Audio format' to 'aac'
  
• enabling 'Audio->Base->Audio Encoding Options->Filtering->Speed change->decimals->from' to 1
  
• enabling 'Audio->Base->Audio Encoding Options->Filtering->Speed change->decimals->to' to 0.8
  

When using MP4Box, adding faststart requires you to enable 'Config->Containers->Mp4Settings->Interleave'.

Cu Selur