MSI afterburner recording problem

[drozo]

So im using MSI afterburner wiht the AMD VCE H.264 Encoder and im running into some problem editing that file, most programs crash or cant read the file at all and i have to reencode it wiht Handbrake. Can anyone suggest me some tips or maybe a fix for that ? Heres the MediaInfo. i tried x264vfw but somehow the video lags sometimes or keeps slowing down and my fps is wayyy better wiht the amd vce.

ncoded date                             : UTC 2015-01-18 20:19:04
Writing application                      : MSIAfterburner.exe v4.0.0.4604
Writing library                          : RivaTuner media encoding library v1.38.0.0

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Codec ID                                 : V_MPEG4/ISO/AVC
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Variable
Language                                 : English
Default                                  : Yes
Forced                                   : No

Audio
ID                                       : 2
Format                                   : PCM
Codec ID                                 : A_PCM/INT/LIT
Duration                                 : 52mn 40s
Bit rate mode                            : Constant
Channel(s)                               : 2 channels
Sampling rate                            : 48.0 KHz
Bit depth                                : 16 bits
Language                                 : English
Default                                  : Yes
Forced                                   : No

[Baldrick]

Frame rate mode : Variable


Can't you record in constant framerate?
What is the video container? mp4,ts,mkv?