Very latest mp4box.exe from Nightly Build of GPAC was used to mux H.264/AAC into an MP4 container. Both standard and latest VLC 1.3.0 Git Nightly Builds will not display Video, Audio, and Subtitle Track Names. Track "lang" are however displayed correctly. User input Track Descriptions are not supported it seems.
Media Player Classic - Home Cinema shows all Track Descriptions, as does Apple Devices.
Is anyone seeing such behavior?