Here it is on youtube - you can see that at around 13s it advances early (from slide 1 -> slide 2):
this was done using the static build of ffmpeg from a few days ago. this one is pretty close - for some reason at 13s it decides to advance though. this one shows the first slide in the first frame but quickly advances past it. Here are some conversions that were done (each displays it's own video timing issues): Each time I advance slides I tap the microphone too (10s, 15s, 20s, 25s). The video starts with a slide for 10s, then advances to 3 more slides 5s each. This is the original OGV file from gtk-recordmydesktop: I'm testing the conversion of my previous videos to AVI but this takes a while since I have to check each transition. I'd still like to track down the underlying issue. I saw this but it isn't quite my situation (trying to go from ogv -> anything) ĪVI files seem to translate correctly! I assume this will be a big hint to someone. But when I'm just talking during a slide those duplicate frames are dropped. 
Converting video where the mouse is moving seems to normally work fine.
I suspect the problem is more properly characterized as dropping duplicate frames during transcoding. It looks like I skip through a slide or two while narrating. When it is transcoded (by me or youtube) the audio and video are out of sync.
Ffmpeg mp4 to ogv movie#
When I watch the ogv file using the default movie player (totem) it looks fine - the audio and video are in sync. I've made a set of screencasts using recordmydesktop on ubuntu 12.10.
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