H264/MP4 Seek Problem

[sneaker_ger]

Originally Posted by Cyberpro60

I have two small niggling questions though: When I recompile using FFMPEG and run the final output through MediaInfo there is no listing for "encoder settings" and therefore no way to determine if this file has open or closed GOPs. Can anybody explain this please?

It seems that your version of ffmpeg simply does not write the custom SEI with these infos (for whatever reason). It should work with the builds from here.
For some reason ffmpeg's preset medium seems to have open-gop "1" as default, though.