Operating system: Ubuntu 16.04
Graphics card: Intel integrated
2.76 and 2.79
Short description of error
.mp4 videos that play correct anamorphic in all tried video players (e.g., VLC, Totem, etc) do not display correct anamorphic when previewed/rendered in Blender.
Exact steps for others to reproduce the error
Use HandBrake to create an .mp4 file: Put in a DVD, select a section, and use HandBrake to rip it with strict/automatic anamorphic setting. Play the created .mp4 file in various video players (e.g., VLC) and notice how anamorphic works perfectly. Now open Blender and Add the .mp4 movie. Notice how the movie previews/renders stretched out, not keeping the proper anamorphic.