Format : RealVideo 4
Codec ID : V_REAL/RV40
Codec ID/Info : RealVideo 4.0 aka RealVideo 9
That's the problem. Yes it's an mkv container, but the video is encoded in RealVideo format. Since RV is proprietary, I doubt your device supports hardware playback. Since it's proprietary, I don't think ffmpeg supports it. MX Player is based on ffmpeg, so whatever ffmpeg plays, MX Player can play.
Try playing it on software mode. If that doesn't work, then you'll probably have to reencode the video.
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MX Player sub-forum Moderator; Primary User Support: http://forum.xda-developers.com/apps/mx-player
The Developer/Owner of MX Player is bleu8888
. Please post a thread in the MX Player sub-forum for support.
I do not answer MX Player questions in PM. Post a thread in the MX Player sub-forum if you need support.