There are several MP4 output options, depending on which device you're outputting your MP4s for.

For portable devices, like iPods and iPhones for instance, you'll find it under Share/Portable Devices.

So I'm assuming that you're using a computer as your playing device for this file?

Well, you're working from video from YouTube, so there's no point in using a high-resolution file. It's not going to be better quality or a higher resolution than the original file.

But you can use the MOV preset for H.264 -- or even create a high-quality preset by clicking on the Advanced button before you share.

Aloha,

The crashing on the Advanced tab is not good.

Do you have the latest version of Apple's AT Player loaded? It's 7.6.9, and so far, runs well with my Adobe programs.

Besides being heavily used by PrE, it also installs the latest versions on Apple's QT CODEC's, including H.264.

Good luck,

Hunt

If you are starting with heavily-compressed H.264, and then plan to output those edited files, to be used in other Projects, I would recommend against using H.264 again, as there will be some quality loss.

For intermediate files, I like using a lossless CODEC, such as UT Lossless, or perhaps Apple's Animation or PhotoPNG in a MOV container. The files WILL be larger, but the quality will be maintained, and when Importing into another Project, that can be very, very important.

When one starts with H.264, then outputs to H.264, re-edits, and then outputs to any lossy CODEC, say H.264 BD for authoring a BD, it's like a FAX, of a FAX, of a FAX. Quality goes down with each generation.

Good luck,

Hunt

In very general terms, yes. In very specific terms, it can contain other CODEC's: http://en.wikipedia.org/wiki/MPEG-4

Hope that helps and good luck,

Hunt

Actually, your Go-Pro does not output a raw file (some professional cameras do though), but instead, uses the H.264 CODEC and wraps that as an MPEG4. The H.264 version of MPEG4 is but a sub-set of MPEG4, but a very popular sub-set, and probably the most common - but it not the ONLY CODEC, that can be wrapped as an MPEG4. Also, and to confuse things a bit, depending on the device that produces the files, MPEG4, or MP4, will not be the ONLY wrapper seen for that H.264 CODEC. Some cameras do H.264, but wrap it as an AVI. Premiere, both Pro and Elements, really have a problem with that format/CODEC combo, but it IS getting more and more common.

For a good starter on file formats as "wrappers," see this article: http://forums.adobe.com/thread/440037?tstart=0

In Reply # 8, I also furnish a link to an article, that will give even more details on CODEC's in general.

When starting with an already compressed file, I then try to keep all intermediate versions as lossless, as is possible, and especially if I will be outputting TO a compressed format at the end of the process, like MPEG-2 DVD, or MP4/MPEG4 w/ H.264 for a DVD-Video, or a BD. This article goes into more detail: http://forums.adobe.com/thread/875797?tstart=0

Good luck, and welcome to the wonderful, but also confusing world of video editing.

Hunt

PS - I find little to be gained by memorizing all the possible CODEC's, and format/CODEC combinations, but instead suggest just getting familiar with the ones that you're using. Almost every quarter, new CODEC's, or new versions of existing CODEC's are introduced, so if you did know everything today, come Dec., some things might well have changed.