screencast creation. Record main screencast using ffmpeg (mpeg4/FFmMP2). Record sped-up intro using ffmpeg (mpeg4/FFmMP2). convert to 20fps xvid/mp3. Merge using. Avidemux. (xvid/mp3). screencast without 15sec Intro (xvid/mp3). YouTube. 15 sec. screencasters intro (xvid/mp3). convert to 20fps xvid/mp3. Merge using. Avidemux. (xvid/mp3). Complete Screencast (xvid/mp3). Complete Screencast (h264 with bframes). screencasters website (downloadable avi). convert to h264 . (no b-frames). convert to h264. (no b-frames). Merge usiing Python. mencoder script. Complete Screencast (h264 with no bframes). screencasters website (streaming flv). Convert to FLV using Python script. convert to h264 using Avidemux.