Hi
Done a test with this....
Shot 2 minute sequence of strict 1 second metronome taps. The camera set to produce an MPEG4 H.264 ;1920 x 1080 30fps clip.
This was transfered to the PC and it opened and played perfectly with both Windows Media Player and VLC.
The clip was then added into Videopad and dropped onto the sequence line.
Both the Clip and the sequence line played perfectly.
With no edits or cuts, the sequence line was exported to the PC as a Custom .avi 1920 x 1080 You-Tube 1080p clip at 30 fps.
The encoder was H264 (Native) Mp3 44100Hz 128 kbps Stereo.
The resulting video did NOT play correctly with VLC. It displayed a badly pixelated image and a markedly out of synch sound that got progressively worse as the clip was played..
The same clip also opened in Windows Media Player. The image this time was clear but lagged at least 1/2 to 1 second behind the sound near the start with the synch getting progressively worse until at the end of the 2 minute clip it was about 20 seconds out.
The sound was progressively out of synch with irfanview in a similar way WMP.
The output format was not playable with Quick Time.
I also loaded the exported avi back into VideoPad .where it played perfectly.
I then converted the MPEG4 raw clip to an MPEG2 clip of the same resolution. This played perfectly in all the mentioned video players including when dropped into Videopad.
The clip was again exported with the same settings as before. It played OK with VLC but again lagged with WMP and Irfanview player but not to such a degree as before. It played perfectly with VideoPad.
I suspect that the resolution (1920 x 1080) is the cause of the lag coupled with the processing speed of the PC.
NCH might want to comment on these findings.
I would suggest that the problem could be reduced by converting clips to mpg2 and possibly shooting at a slightly lower resolution or outputting at a lower resolution e.g. 1280 x 720.
Having had this problem in the past and a (now) slower PC I generally shoot at the lower resolution 1280 x 720 (MPEG4 output) and then convert to MPEG2. I have no synch problems, the MPEG2 seems clearer and brighter and the result looks quite OK.
Nat
