How to configure video proxy, audio proxy & thumbnail settings for FFMPEG?

Below arguments can be used to configure:
Video Proxy  :  
  -i "eSourceFile" -y -s 1280x720 -b:v 1024k -vcodec libx264 -r eSourceFrameRate -movflags faststart -pix_fmt yuv420p "eVideoProxy"
Video Proxy  with logo watermarking: 
-i "eSourceFile" -i C:\Logos\rbh.png -filter_complex "overlay=10:10" -y -s 640x360 -b:v 1024k -vcodec libx264 -r eSourceFrameRate -movflags faststart -pix_fmt yuv420p "eDestPath\eUUID_1.mp4"
* Please ensure the logo path is entered correctly.
Audio Proxy:
-i "eSourceFile" -y -ab 128k "eAudioProxy"
Argument for generating single thumbnail-
-i "eSourceFile" -y -ss 00:00:08.000 -f image2 -vf scale=176:-1 -vframes 1 "eThumb"
The argument for generating multiple thumbnails-
-i "eSourceFile" -y -f image2 -vf fps=fps=1/5,scale=176:-1 "eDestPath\eUUID_%4d.jpg"
Also, there is an option in super admin to set the sequence parameter for thumbnail arguments. If the sequence parameter is set, and “eThumb” is used as the output file name, eMAM will extract multiple thumbnails based on the frame rate specified by the ‘fps’ parameter. 
Mezzanine - XDCAM50
-i "eSourceFile" -target xdcamhd422 -vtag "xd5b" ""