No video only sound with mp4 files

No video only sound with mp4 files, already updates directx

Mediainfo about one of the files:

General
Complete name : /Volumes/HTPC/Movies/Iron Man (2008).mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 1.40 GiB
Duration : 2h 0mn
Overall bit rate : 1 663 Kbps
Encoded date : UTC 2008-09-28 08:06:31
Tagged date : UTC 2008-09-28 09:54:20
Writing application : HandBrake 0.9.2 2008021900

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 2h 0mn
Bit rate mode : Variable
Bit rate : 1 500 Kbps
Width : 720 pixels
Height : 428 pixels
Display aspect ratio : 2.35:1
Frame rate mode : Constant
Frame rate : 25.000 fps
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.195
Stream size : 1.27 GiB (90%)
Writing library : x264 core 58 svn-736M
Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x1:0x111 / me=umh / subme=5 / brdo=0 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=0 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=3 / nr=0 / decimate=1 / mbaff=0 / bframes=2 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=1 / wpredb=0 / bime=0 / keyint=250 / keyint_min=25 / scenecut=40(pre) / rc=2pass / bitrate=1500 / ratetol=1.0 / rceq='blurCplx^(1-qComp)' / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30
Language : English
Encoded date : UTC 2008-09-28 08:06:31
Tagged date : UTC 2008-09-28 09:54:19

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : No
Codec ID : 40
Duration : 2h 0mn
Bit rate mode : Variable
Bit rate : 160 Kbps
Maximum bit rate : 235 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Stream size : 138 MiB (10%)
Language : German
Encoded date : UTC 2008-09-28 08:06:31
Tagged date : UTC 2008-09-28 09:54:19

Text
ID : 3
Format : Apple text
Codec ID : text
Duration : 2h 0mn
Bit rate mode : Constant
Bit rate : 0
Stream size : 432 Bytes (0%)
Language : English
Encoded date : UTC 2008-09-28 08:06:31
Tagged date : UTC 2008-09-28 09:54:19