AvsP Won't load the video

[TsUNaMy WaVe]

So I've got an mkv video. I usually use the ffms2 plugin to open videos, but it didn't work (just said "couldn't open"). I also tried DirectShowSource, but it didn't open it either.
Somehow, virtualdub did opened it (probably because of the ffinputdriver). So I encoded it to avi (no other editing, just so it will be avi) with virtualdub and then tried to open it in avsp with AviSource, still no luck. Why won't it open this video?!

Video info:

General
Unique ID                                : 199069539360921106638242983202429760462 (0x95C366105ADFC63CAB333B7DFDAE73CE)
Complete name                            : F:\Sample\Sample.mkv
Format                                   : Matroska
Format version                           : Version 4 / Version 2
File size                                : 1.22 GiB
Duration                                 : 23mn 43s
Overall bit rate mode                    : Variable
Overall bit rate                         : 7 364 Kbps
Encoded date                             : UTC 2014-02-10 16:09:47
Writing application                      : mkvmerge v6.5.0 ('Isn't she lovely') built on Oct 20 2013 12:50:05
Writing library                          : libebml v1.3.0 + libmatroska v1.4.1

Video
ID                                       : 3
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High 10@L5.1
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 14 frames
Codec ID                                 : V_MPEG4/ISO/AVC
Duration                                 : 23mn 43s
Nominal bit rate                         : 4 000 Kbps
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 10 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.080
Writing library                          : x264 core 132 r2323+704+51 d571b1c tMod [10-bit@4:2:0 X86]
Encoding settings                        : cabac=1 / ref=14 / deblock=1:-2:-2 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / fade_compensate=0.00 / psy_rd=0.60:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=18 / lookahead_threads=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / fgo=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=500 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc=2pass / mbtree=0 / bitrate=4000 / ratetol=1.0 / qcomp=0.60 / qpmin=8 / qpmax=32 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=4:0.80 / aq-sensitivity=10.00 / aq-factor=1.00:1.00:1.00 / aq2=0 / aq3=0
Default                                  : Yes
Forced                                   : No
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709

Audio
ID                                       : 2
Format                                   : FLAC
Format/Info                              : Free Lossless Audio Codec
Codec ID                                 : A_FLAC
Duration                                 : 23mn 43s
Bit rate mode                            : Variable
Channel(s)                               : 2 channels
Sampling rate                            : 48.0 KHz
Bit depth                                : 24 bits
Writing library                          : libFLAC 1.2.1 (UTC 2007-09-17)
Language                                 : Japanese
Default                                  : Yes
Forced                                   : No

Text
ID                                       : 1
Format                                   : PGS
Muxing mode                              : zlib
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Default                                  : Yes
Forced                                   : No

Menu
00:00:00.000                             : en:00:00:00.000
00:01:14.408                             : en:00:01:14.408
00:02:45.040                             : en:00:02:45.040
00:13:24.012                             : en:00:13:24.012
00:21:32.208                             : en:00:21:32.208
00:23:36.999                             : en:00:23:36.999

[poisondeathray]

Use a newer ffms2 version , or use l-smash

[racer-x]

Or use the correctly worded script.......

[MaverickTse]

I suspect it is the FLAC audio.
Try demuxing the file and load the VIDEO only

[videobruger]

I suspect it is the FLAC audio

So did I. However I made a test using DirectShowSource which worked without problems.