Hello I'm trying to play a .mkv video.. i have downloaded CCCP latest version. i can hear the sound and see the video, but still the video is very very slow..not fluent. i am wondering what could I do in irder to fix this problem.

i scanned the file with
Matroska diag.. here's what I got :

Matroska file info : C:\Programmi\AdunanzA\Incoming\Letters.from.(Lette re.da).Iwo.Jima.[x264.-.AAC.JPN-ITA.-.Subs].mkv
File size : 1.46 GB
File complete : yes
Duration : 02:14:59.968
Title : Letters from Iwo Jima
Writing application : mkvmerge v2.0.2 ('You're My Flame') built on Feb 21 2007 23:40:55
Muxing application : libebml v0.7.7 + libmatroska v0.8.1
Date : 2006-07-31 11:53:19.000
Tracks : 7
Track 1 : Video

Codec : (V_MPEG4/ISO/AVC)
Name : Letters from Iwo Jima
Language : Undetermined (und)
Pixel Width : 716
Pixel Height : 424
Display Width : 714
Display Height : 290
Track 2 : Audio

Codec : (A_AAC)
Name : Italiano 5.1
Language : Italian (ita)
Sampling Frequency : 24000
Output Sampling Frequency : 48000
Channels : 6
Track 3 : Audio

Codec : (A_AAC)
Name : Japanese 5.1
Language : Japanese (jpn)
Sampling Frequency : 24000
Output Sampling Frequency : 48000
Channels : 6
Track 4 : Subtitles

Codec : VobSub subtitles (S_VOBSUB)
Possible filter : VSFilter/DVobSub
Installed : yes, in C:\Programmi\Combined Community Codec Pack\Filters\VSFilter.dll (1.0.1.3)
Link : http://sourceforge.net/projects/guliverkli
Name : Italiano (forced)
Language : Italian (ita)
Track 5 : Subtitles

Codec : VobSub subtitles (S_VOBSUB)
Possible filter : VSFilter/DVobSub
Installed : yes, in C:\Programmi\Combined Community Codec Pack\Filters\VSFilter.dll (1.0.1.3)
Link : http://sourceforge.net/projects/guliverkli
Name : Italiano
Language : Italian (ita)
Track 6 : Subtitles

Codec : VobSub subtitles (S_VOBSUB)
Possible filter : VSFilter/DVobSub
Installed : yes, in C:\Programmi\Combined Community Codec Pack\Filters\VSFilter.dll (1.0.1.3)
Link : http://sourceforge.net/projects/guliverkli
Name : Italiano (non udenti)
Language : Italian (ita)
Track 7 : Subtitles

Codec : VobSub subtitles (S_VOBSUB)
Possible filter : VSFilter/DVobSub
Installed : yes, in C:\Programmi\Combined Community Codec Pack\Filters\VSFilter.dll (1.0.1.3)
Link : http://sourceforge.net/projects/guliverkli
Name : English
Language : English (eng)
Edition entry : 1

00:00:13.000 - 00:05:10.960 Chapter 1
00:05:10.960 - 00:10:26.080 Chapter 2
00:10:26.080 - 00:12:54.640 Chapter 3
00:12:54.640 - 00:16:47.520 Chapter 4
00:16:47.520 - 00:22:52.120 Chapter 5
00:22:52.120 - 00:26:30.440 Chapter 6
00:26:30.440 - 00:30:52.600 Chapter 7
00:30:52.600 - 00:36:38.120 Chapter 8
00:36:38.120 - 00:39:36.600 Chapter 9
00:39:36.600 - 00:45:23.640 Chapter 10
00:45:23.640 - 00:49:21.360 Chapter 11
00:49:21.360 - 00:52:11.640 Chapter 12
00:52:11.640 - 00:54:52.160 Chapter 13
00:54:52.160 - 00:58:03.880 Chapter 14
00:58:03.880 - 01:01:56.200 Chapter 15
01:01:56.200 - 01:06:32.440 Chapter 16
01:06:32.440 - 01:08:21.120 Chapter 17
01:08:21.120 - 01:11:03.240 Chapter 18
01:11:03.240 - 01:14:05.080 Chapter 19
01:14:05.080 - 01:19:23.920 Chapter 20
01:19:23.920 - 0140.640 Chapter 21
0140.640 - 01:25:32.000 Chapter 22
01:25:32.000 - 01:30:38.040 Chapter 23
01:30:38.040 - 01:33:14.320 Chapter 24
01:33:14.320 - 01:35:08.400 Chapter 25
01:35:08.400 - 01:41:40.800 Chapter 26
01:41:40.800 - 01:45:55.520 Chapter 27
01:45:55.520 - 01:50:56.880 Chapter 28
01:50:56.880 - 01:54:04.680 Chapter 29
01:54:04.680 - 01:58:25.800 Chapter 30
01:58:25.800 - 02:02:04.520 Chapter 31
02:02:04.520 - 02:08:07.880 Chapter 32
02:08:07.880 - 02:14:59.968 Chapter 33


DirectShow RenderFile check :
Matroska Splitter : Gabest's Matroska Splitter

Installed : no
Can be created : no
Matroska Splitter : Haali's New Matroska Splitter

Installed : yes, in C:\Programmi\Combined Community Codec Pack\Filters\Haali\splitter.ax (1.7.189.11)
Can be created : yes
RenderFile with DirectShow : OK
Filters in graph: : 6

Default DirectSound Device - DirectSound Audio Renderer {79376820-07D0-11CF-A24D-0020AFD79767} - C:\WINDOWS\system32\quartz.dll (6.5.2600.2905)
Video Renderer - Video Mixing Renderer {B87BEB7B-8D29-423F-AE4D-6582C10175AC} - C:\WINDOWS\system32\quartz.dll (6.5.2600.2905)
ffdshow Audio Decoder {0F40E1E5-4F79-4988-B1A9-CC98794E6B55} - C:\Programmi\Combined Community Codec Pack\Filters\FFDShow\ffdshow.ax (1.0.3.1352)
DirectVobSub (auto-loading version) {9852A670-F845-491B-9BE6-EBD841B8A613} - C:\Programmi\Combined Community Codec Pack\Filters\VSFilter.dll (1.0.1.3)
ffdshow Video Decoder {04FE9017-F873-410E-871E-AB91661A4EF7} - C:\Programmi\Combined Community Codec Pack\Filters\FFDShow\ffdshow.ax (1.0.3.1352)
C:\Programmi\AdunanzA\Incoming\Letters.from.(Lette re.da).Iwo.Jima.[x264.-.AAC.JPN-ITA.-.Subs].mkv - Haali Media Splitter {55DA30FC-F16B-49FC-BAA5-AE59FC65F82D} - C:\Programmi\Combined Community Codec Pack\Filters\Haali\splitter.ax (1.7.189.11)


DirectShow detailed rendering :
0> MyRenderFile : C:\Programmi\AdunanzA\Incoming\Letters.from.(Lette re.da).Iwo.Jima.[x264.-.AAC.JPN-ITA.-.Subs].mkv
0> Creation of GraphBuilder : OK
0> Creation of FilterMapper2 : OK
21> Adding graph to ROT : OK
121> Creation of source filter : OK
121> # Rendering output pin C:\Programmi\AdunanzA\Incoming\Letters.from.(Lette re.da).Iwo.Jima.[x264.-.AAC.JPN-ITA.-.Subs].mkv(Video)
121> Filters matching mediatype : ffdshow Video Decoder, DirectVobSub (auto-loading version), Video Renderer, AVI Decompressor, Nero Video Decoder, Nero DVD Decoder
121> Trying connection to ffdshow Video Decoder :
221> OK, connected to (In)ffdshow Video Decoder
221> # Rendering output pin C:\Programmi\AdunanzA\Incoming\Letters.from.(Lette re.da).Iwo.Jima.[x264.-.AAC.JPN-ITA.-.Subs].mkv(Video) -> ffdshow Video Decoder(Out)
231> Filters matching mediatype : ffdshow Video Decoder, DirectVobSub (auto-loading version), Video Renderer, AVI Decompressor, Nero Video Decoder, Nero DVD Decoder
231> Trying connection to DirectVobSub (auto-loading version) :
241> OK, connected to (Video)DirectVobSub (auto-loading version)
241> # Rendering output pin C:\Programmi\AdunanzA\Incoming\Letters.from.(Lette re.da).Iwo.Jima.[x264.-.AAC.JPN-ITA.-.Subs].mkv(Video) -> ffdshow Video Decoder(Out) -> DirectVobSub (auto-loading version)(Output)
261> Filters matching mediatype : ffdshow Video Decoder, DirectVobSub (auto-loading version), Video Renderer, AVI Decompressor, Nero Video Decoder, Nero DVD Decoder
261> Trying connection to Video Renderer :
381> OK, connected to (VMR Input0)Video Renderer
381> Completed path : C:\Programmi\AdunanzA\Incoming\Letters.from.(Lette re.da).Iwo.Jima.[x264.-.AAC.JPN-ITA.-.Subs].mkv(Video) -> ffdshow Video Decoder(Out) -> DirectVobSub (auto-loading version)(Output) -> Video Renderer
381> # Rendering output pin C:\Programmi\AdunanzA\Incoming\Letters.from.(Lette re.da).Iwo.Jima.[x264.-.AAC.JPN-ITA.-.Subs].mkv(Audio)
381> Filters matching mediatype : ffdshow Audio Decoder, DirectVobSub (auto-loading version), ACM Wrapper
381> Trying connection to ffdshow Audio Decoder :
401> OK, connected to (In)ffdshow Audio Decoder
401> # Rendering output pin C:\Programmi\AdunanzA\Incoming\Letters.from.(Lette re.da).Iwo.Jima.[x264.-.AAC.JPN-ITA.-.Subs].mkv(Audio) -> ffdshow Audio Decoder(Out)
411> Filters matching mediatype : ffdshow Audio Decoder, DirectVobSub (auto-loading version), Default DirectSound Device, ACM Wrapper, FLV Splitter
411> Trying connection to DirectVobSub (auto-loading version) :
461> DirectVobSub (auto-loading version) AddFilter failed : : Errore non specificato. (0x80004005)
461> Trying connection to Default DirectSound Device :
481> OK, connected to (Audio Input pin (rendered))Default DirectSound Device
481> Completed path : C:\Programmi\AdunanzA\Incoming\Letters.from.(Lette re.da).Iwo.Jima.[x264.-.AAC.JPN-ITA.-.Subs].mkv(Audio) -> ffdshow Audio Decoder(Out) -> Default DirectSound Device
481> # Rendering output pin C:\Programmi\AdunanzA\Incoming\Letters.from.(Lette re.da).Iwo.Jima.[x264.-.AAC.JPN-ITA.-.Subs].mkv(Subtitle)
481> OK, connected to (Input)DirectVobSub (auto-loading version)
481> MyRenderFile finished : OK

Just download VLC player it plays all video files with out the need of codecs. It plays .mkv which your trying to play along with all the others.

Download:
http://www.videolan.org/vlc/

Double post please delete