I have a bunch of .mpg (MPEG-2) files created using a sony camcorder and am trying to use my iMac to convert them to .mov files so that I can work with them in iMovie. I installed ffmpegX (I believe correctly), but when I execute the file conversion, I keep getting empty files. I have tried checking and unchecking the "invert mapping" box. As an aside, The ffmpegX "MPlayer" is able to Play the MPG file video, but it does not play the audio (I'm not sure if this is a relevant observation). Here is the log: FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard Mac OSX universal build for ffmpegX libavutil version: 49.0.0 libavcodec version: 51.9.0 libavformat version: 50.4.0 Input #0, mpeg, from '/Users/craigdh75/Movies/20081224180626.mpg': Duration: 00:01:25.5, start: 0.220133, bitrate: 9146 kb/s Stream #0.0[0x20]: Subtitle: dvdsub Stream #0.1[0x80]: Audio: ac3, 48000 Hz, stereo, 256 kb/s Stream #0.2[0x1e0], 29.97 fps(r): Video: mpeg2video, yuv420p, 720x480, 9100 kb/s Codec type mismatch for mapping #0.1 -> #0.0 Fri Jan 1 22:34:56 CST 2010 Any help would be greatly appreciated!