SD card adapter only works with the Photos app.
----------
I would recommend reencoding in Handbrake into m4v files. Then when you store them you should be able to import them into your camera roll for playback.
edit: also, with it properly encoded into h.264 via Handbrake, your video files will play natively through the hardware decoders and you'll get better quality and better battery life. Transcodin on the fly has got to reak havoc on CPU and batt. life.
Only issue is the subtitles are softcoded in MKV files. If i use handbreak to convert, the subs are lost.
Embed them as a Handbrake input. https://trac.handbrake.fr/wiki/Subtitles
why does it say on the website that this cable supports video as well?
Just wondering