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View Full Version : Problems with Keyframes and wrong timeline!


DjDiabolik
22nd February 2012, 12:36
Hi boys.... i have that simple question about use of virtualdub or virtualdubmod.
I stay to open and modify this file:
General
Complete name : Part1.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 861 MiB
Duration : 1h 43mn
Overall bit rate : 1 163 Kbps

Video
ID : 0
Format : MPEG-4 Visual
Format profile : Advanced Simple@L5
Format settings, BVOP : 2
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 1h 43mn
Bit rate : 1 023 Kbps
Width : 640 pixels
Height : 368 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.174
Stream size : 757 MiB (88%)
Writing library : XviD 1.1.2 (UTC 2006-11-01)

Audio
ID : 1
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Mode : Joint stereo
Mode extension : MS Stereo
Codec ID : 55
Codec ID/Hint : MP3
Duration : 1h 43mn
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel(s) : 2 channels
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 94.7 MiB (11%)
Alignment : Aligned on interleaves
Interleave, duration : 26 ms (0.65 video frame)
Interleave, preload duration : 809 ms



When This file it's open and i use the navigation for keyframes i obtain a problems..... a wrong timeline!
Example:
I skip forward to Keyframe at "Frame 389 (0:00:15.560) [K] [1.91 MB]"........ at this point if i use the left or right arrow on keyboard for next or previous frame the time skip forward of backward about 10 or 20 seconds.

Because happened this ?

DjDiabolik
22nd February 2012, 12:52
Look at this example with this file and with this screenshot:

- Navigate to Frames 5052 ad this is the frame:
http://img207.imageshack.us/img207/6796/5052first.jpg


- At this point press one time to Key-Previous at skip to this frame:
http://img190.imageshack.us/img190/7295/keyprevious.jpg

- At this point if i use the Key-Next button i come back to frame 5052 but look the result..i don't obtain the same moment of show!!
Look here:
http://img201.imageshack.us/img201/1198/keynext.jpg

For obtain the same frame with correct (i thinks) timeline i need to navigate to previous frame and next frame with single arrow on keyboard.......

Because i have this problems ?

Guest
22nd February 2012, 15:23
Where did you get the AVI files?

hello_hello
27th February 2012, 10:16
Try resaving the entire AVI (no editing) using direct stream copy for both audio and video, then open the newly saved AVI and see if editing it gives you the same problem.