Try lightweight intuitive video player.

This is a video player that support SMI SRT SBV and ASS/SSA subtitle file.

SMI SRT SBV and ASS/SSA file have to exist at same place with movie file.

if you have a /sdcard/AAA.mp4 SMI file name must have /sdcard/AAA.smi.

It supported
Subtitle mirroring for Side by side(SBS) video
ASS/SSA subtitle
Colored SMI
Support Ruby tag
Subtitle time sync adjust
Subtitle size
Subtitle position
folder browser
Volume control
Brightness control
Volume Key reverse mode
Repeat A-B postions
display remain time (click duration)
etc