> I'm sure this is a solved problem somewhere but I can't see it. > Certainly zipping or gzipping don't work in any obvious way (or not > obvious enough, anyway!) Suggestions? You are essemtially describing MPEG. In its normal form MPEG sends a key frame about twice a second and the rest as two types of inbetween frames of differences. Various other codecs do similar things (eg the Ogg vorbis) codec but have encoding technology differences. If your input capture format is forced to be JPEG then you may well need to use MPEG and a tool that can generate the key frames without decoding/recoding the JPEG image. If you can capture raw and feed to the encoder then you've got a wide variety of choices. Alan -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org