переименовал, но продолжительность по прежнему разнится:
General
Complete name : C:\Users\Alex\Desktop\5212_Steve_bobbi.mp4
Format : MPEG-4
Codec ID : M4V
File size : 1.16 GiB
Duration : 56mn 21s
Overall bit rate mode : Variable
Overall bit rate : 2 956 Kbps
Encoded date : UTC 2013-05-06 13:24:13
Tagged date : UTC 2013-05-06 13:24:13
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 56mn 21s
Source duration : 53mn 14s
Bit rate mode : Variable
Bit rate : 2 704 Kbps
Maximum bit rate : 5 000 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.098
Stream size : 1.06 GiB (91%)
Source stream size : 1.12 GiB (96%)
Language : English
Encoded date : UTC 2008-03-25 01:00:03
Tagged date : UTC 2013-05-06 13:25:36
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 53mn 14s
Bit rate mode : Variable
Bit rate : 126 Kbps
Maximum bit rate : 130 Kbps
Channel count : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 47.7 MiB (4%)
Language : English
Encoded date : UTC 2013-05-06 13:24:13
Tagged date : UTC 2013-05-06 13:25:36
