When using ffmpeg on linux, my 4.3GB 2.21 second video is being chopped down to 1.56 duration. I'm trying to reduce file size, but not lose frames.

steve@steve-OptiPlex-170L:~/Desktop$ ffmpeg -i microbe.avi microbe.mp4 ffmpeg version 0.8.3-4:0.8.3-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the Libav developers built on Jun 12 2012 16:37:58 with gcc 4.6.3 * THIS PROGRAM IS DEPRECATED * This program is only provided for compatibility and will be removed in a future release. Please use avconv instead. Input #0, avi, from 'microbe.avi': Duration: 00:02:21.80, start: 0.000000, bitrate: 242311 kb/s Stream #0.0: Video: rawvideo, bgr24, 1280x960, 10 tbr, 10 tbn, 10 tbc Incompatible pixel format 'bgr24' for codec 'mpeg4', auto-selecting format 'yuv420p' [buffer @ 0x9f861e0] w:1280 h:960 pixfmt:bgr24 [avsink @ 0x9f86440] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out' [scale @ 0x9f7d800] w:1280 h:960 fmt:bgr24 -> w:1280 h:960 fmt:yuv420p flags:0x4 Output #0, mp4, to 'microbe.mp4': Metadata: encoder : Lavf53.21.0 Stream #0.0: Video: mpeg4, yuv420p, 1280x960, q=2-31, 200 kb/s, 10 tbn, 10 tbc Stream mapping: Stream #0.0 -> #0.0 Press ctrl-c to stop encoding frame= 1164 fps= 6 q=31.0 Lsize= 3775kB time=116.40 bitrate= 265.7kbits/s
video:3765kB audio:0kB global headers:0kB muxing overhead 0.272870% steve@steve-OptiPlex-170L:~/Desktop$