I've been asked to deliver the final product of a project in MP4-ES format. I've gathered that it would be possibly an MP4 file with ES video but I've never heard of it and am having trouble finding it online.
MPEG4 Elementary Stream.
Episode Pro can do that. Simplest way is to take an MPEG2 ES stream preset for DVD Authoring and switch it to MPEG4. It'll have an .m2v extension (I don't know the impact of changing that) but it will be an MPEG4 Elementary Stream though.
Of course you can just do a typical MPEG4 encode (of whatever variant) and not encode the audio.
MPEG4 no audio may not be exactly the same as MPEG4 Elementary Stream. Of course if they can handle both it may make no difference to them.
Does the project video have audio? That's a very obscure request. I've only heard of one application or encoder that uses MP4 ES and that's 3ivx. There could be more but I couldn't find any when doing searches for MP4 Elementary Stream on Google.
We don't do Do Blu-Ray authoring, but I guess in theory if you use AVC compression (H264) it might use an MP4 elementary stream and mux it with the accompanying audio file???
I stumbled across 3ivs a while back doing research for an email newsletter we sent out about alternative media players. Seems they have an encoder that encodes the video as an M4V ES, and the audio as AAC then muxes them together in any number of wrappers like AVI, ASF, Quicktime etc.