I'm switching over from Episode Pro for my compression/encoding needs and was hoping a function we used all the time is possible in Media Encoder.
We encode our videos to multiple formats for the various demands of our clients, and a couple of them require 2 seconds of black before the video starts. In Episode I had a preset with the 2 seconds added so I could make all my encodings in one pass. I added the master, then added all the presets I wanted and hit start. I don't see anything in the settings within AME that lead me to think this is possible. I know I can create an additional master with 2 seconds black at the head and then send that to AME but that's an extra step I'd like to skip if possible.
I don't use AME myself since when I finish an edit in Premiere, I just export from there and don't need batch capabilities. That said - in Premiere, you could use File > New > Black Video to create a black slug that you can insert ahead of your video clip in the Sequence (timeline).
Then in AME, use File > Add Premiere Pro Sequence
This will be the source video with the black added. Set up the encoding as desired.
I don't know if that's the most efficient way to do this, but it's what I can think of