Can Media Encoder "batch normailize" across different media files?

Question

We are a digital signage company that builds “custom TV channels” for our end clientsThese channels play on displays in their locations we remotely manageAs part of this we procure video files (with attached audio tracks, from different sources and put them into these channelsThe audio for these are all over the mapWe need to be able to normalize all the files that will be in a given “channel” at the same time.We have used “DDVideo HD Converter Gain” for the last ~10 years, but the company is now defunctThis program allowed us to “batch” all the different files into a “project”, and it returned all the different files with the “audio normalized” (video is untouched)NOTE:  The “batching” requirement is a must have; upload all files at once and have them returned with the audio normalizedBefore doing a lot of testing, can Media Encoder do this?

David Arbor · Answer

This should be possible with some caveats. Are the formats you're receiving these videos in all over the place or are they consistent, say ProRes 422? If your format supports Smart Rendering then you can bring the file into AME, and as long as the Output settings match the Source settings identically, you can enable the "Loudness Normalization" effect (see screenshot below) and your video should be untouched. Here's a list of formats that support Smart Rendering: https://helpx.adobe.com/premiere-pro/using/smart-rendering.html

I confirmed this by taking a 10 minute ProRes 422 clip into AME. Here are my results:

1) Using the ProRes 422 output preset with no other changes: 13 seconds. (indicating that AME checked out the video and used Smart Rendering to leave the file untouched).

2) Using the ProRes 422 preset and enabling the Loudness Normalization effect: 29 seconds.

3) Using the ProRes 422 preset, but unchecking the Match Source checkbox for frame rate and switching from 29.97 to 30: 1m18s.

4) For good measure, the same as above, but also enabling the Loudness Normalization effect: 1m41s.

These tests seem to confirm that if your output settings match your source exactly, and if that format supports Smart Rendering, then yes, you can batch process a bunch of clips and only enable the Loudness Normalization effect.

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