Patch limitations

After patching your firmware, please read this before asking on the forum.

Playback
To minimize the possibility of interrupted recording, use a Class 10 memory card. Preferably UHS-1.
 * 64Mbps hack: no playback in camera
 * 54Mbps hack: no playback in camera
 * 36Mbps hack: playback works in most cases.

Removal of Time limit
If you remove the time limit for video, there is still a file size limitation. This is not a file system limitation, even though the result (max 4GB video size) is the same as what would be the problem if it was the file system. The movie recording code only uses a int32 (4GB size number) to track file offsets, the file system uses int64 (4GB x 4GB) so it's really the movie code. While this is/was the problem for earlier models, the movie recording code is not yet 100% found for the D5200 models, thus why the record limit has also not be hacked yet.

If you need to record longer videos, you will have to use the "removal of time limit"-hack and lower bitrate.

Maximum video durations (theoretical)

 * 36Mbps hack: 15min 10s
 * 54Mbps hack: 10min 6s
 * 64Mbps hack: 8min 32s

The 4GB file size limit will be reached with these bitrate/time combinations. After reaching this limit, recording will stop and the time counter will reset. The counter will only show the maximum lenght for the current clip. The maximum lenght is limited by
 * 4GB file size limit
 * space remaining on card.

If you have less than 4GB free space, the counter will obviously show less.

Liveview

 * Screen goes black when using 30fps modes with shutter speed longer than 1/40s (D5100)
 * Screen goes black when using 25fps modes with shutter speed longer than 1/30s (D5100)
 * Autofocus fails when using 30fps modes with shutter speed longer than 1/40s (D5100)
 * Autofocus fails when using 25fps modes with shutter speed longer than 1/30s (D5100)