I was writing a post about You Dont Mess With Zohan movie and I had to split a 50 second video from it.
I have Vlc installed, so I enabled to view the advanced controls and recorded the required portion.
Once it is done, I played it back, but the audio and video are not syncing. I tried again and the same thing happened again.
This is the video splitted with Vlc.
Next, I splitted video with ffmpeg using this command.
I splitted correctly and audio/video are synced perfectly well.
This video is split with ffmpeg.