When playing a video file via MediaPlayer encoded with H264/AAC I see only a picture but not able to play the video.

This is the error message I get:

Error: MediaException: UNKNOWN : [com.sun.media.jfxmediaimpl.platform.gstreamer.GSTMediaPlayer@17860a3f] ERROR_MEDIA_INVALID: ERROR_MEDIA_INVALID

The file can be viewed without problems in the VLC player