I can't view video received in mms

REPRODUCIBILITY (% or how often): 100%
BUILD ID = OS VERSION (Settings > About product): 4.2.0.21
HARDWARE (XA2, X10, X10 II, …): Xperia XA2 Plus
UI LANGUAGE: Swedish

DESCRIPTION:

I receive some videos in a mms a it’s a .3gp video (3GPP) but i can’t view it.
If i chose play in the mms it opens Gallery app and then it goes black and i can’t even see the controls but i can swipe down to close the video.
If i run file on it then it outputs “ISO Media, MPEG v4 system, 3GPP” and the files was sent from an iphone.
If i copy the file from commhistory to Downloads then i can open and see the video with gallery but it complains about missing Adaptive Multi Rate (AMR) decoder so there is no sound.

PRECONDITIONS:

Recieve an 3gp video in a mms
I only tried with a mms video from a iphone

STEPS TO REPRODUCE:

  1. Click on the video in the mms
  2. Click on the video again

EXPECTED RESULT:

The gallery app should play the video with sound

ACTUAL RESULT:

The gallery app opens the video and the screen turns black.
It doesn’t show the video nor plays the sound and there are no controls or video progress bar even if i touch the screen.
I can swipe down to kill the video and remain in the gallery app

ADDITIONAL INFORMATION:

If i copy the file from commhistory to Downloads then i can open and see the video with gallery but it complains about missing Adaptive Multi Rate (AMR) decoder so there is no sound.

The missing sound seem to be mentioned in this post.