Message text:

After Effects: For reliable output with H.264 compression, please choose it directly from the Output Module Format menu instead of via QuickTime.

Message interpretation:

For best quality output, choose Adobe‘s own H.264 encoder.

Possible causes:

This is a friendly warning if you want to output content to the H.264 format to safe you trouble later on. Particularly if you plan on moving the files to an authoring environment for BluRay discs, want to use it in Flash and other alternate players or plan on converting it with other tools, using the Quicktime version may impair quality and compatibility. Using the native exporters avoids these problems and in addition may produce better quality from the get go. the improved performance of those modules may also pay off if you have to encode large amounts of footage.

Resolution or workaround:

Not applicable.