hello Praveen
the videos are recorded with my digital camera in AVCHD format (which I believe is H.264), then converted in MP4 with Handbrake, here is the info provided by MediaInfo freeware for one othe converted video file, maybe this will help to find the problem :
General
Complete name : G:\__Captures video\Cours Daf (vidéo)\Cours_Daf_2011\Cours_Daf_2011-06-04\Hal Garten (impro4)_new.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 7.13 MiB
Duration : 51s 792ms
Overall bit rate : 1 155 Kbps
Encoded date : UTC 2011-06-15 13:05:24
Tagged date : UTC 2011-06-15 13:05:24
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 51s 760ms
Bit rate mode : Variable
Bit rate : 960 Kbps
Maximum bit rate : 1 703 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.042
Stream size : 5.93 MiB (83%)
Writing library : x264 core 112
Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=2 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=0 / open_gop=0 / weightp=2 / keyint=500 / keyint_min=50 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=26.0 / qcomp=0.60 / qpmin=3 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2011-06-15 13:05:24
Tagged date : UTC 2011-06-15 13:05:24
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177
Audio
ID : 2
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Mode : Joint stereo
Mode extension : MS Stereo
Codec ID : 6B
Duration : 51s 792ms
Bit rate mode : Constant
Bit rate : 192 Kbps
Maximum bit rate : 198 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 1.18 MiB (17%)
Writing library : LAME3.98
Encoding settings : -m j -V 4 -q 2 -lowpass 18.6 -b 192
Encoded date : UTC 2011-06-15 13:05:24
Tagged date : UTC 2011-06-15 13:05:24
One thing though, the FPS should be 50 but mediainfo sees it at 25.