Videos missing sound

[google]

I noticed that my videos are missing sound ever since I backed up my iP6 and transferred them to my new iP7 that my videos do not have sound anymore.

Anyone else noticed this bug?

 

[Ntombi]

No, I actually just watched a few videos transferred from my 6 this morning, they sounded fine.

Have you rebooted the phone, just to make sure? Resynced?