Something

pwk@mama ~ $ transcode -i bike-pro.mpeg -y mp2enc -o test.mpg
transcode v0.6.14 (C) 2001-2003 Thomas Oestreich, 2003-2004 T. Bitterberg
[transcode] (probe) suggested AV correction -D 0 (0 ms) | AV 0 ms | 0 ms
[transcode] auto-probing source bike-pro.mpeg (ok)
[transcode] V: import format    | MPEG    (V=mpeg2|A=mp3)
[transcode] V: AV demux/sync    | (0) sync AV at PTS start - demuxer disabled
[transcode] V: import frame     | 352x288  1.22:1  encoded @ 4:3
[transcode] V: bits/pixel       | 0.710
[transcode] V: decoding fps,frc | 25.000,3
[transcode] V: Y'CbCr           | YV12/I420
[transcode] A: import format    | 0x50    MPEG layer-2 [44100,16,2]  224 kbps
[transcode] A: export format    | 0x50    MPEG layer-2 [44100,16,2]  128 kbps
[transcode] V: encoding fps,frc | 25.000,3
[transcode] A: bytes per frame  | 7056 (7056.000000)
[transcode] A: adjustment       | 0@1000
[transcode] V: IA32 accel mode  | sse3 (sse3 sse2 sse 3dnowext 3dnow mmxext mmx asm C)
tc_memcpy: using mmxext for memcpy
[transcode] V: video buffer     | 10 @ 352x288
[import_mp3.so] v0.1.4 (2003-08-04) (audio) MPEG
[import_mpeg2.so] v0.4.0 (2003-10-02) (video) MPEG2
[export_mp2enc.so] v1.0.10 (2004-09-27) (audio) MPEG 1/2
[transcode] warning : (encoder.c) video codec not supported by export module
[transcode] warning : failed to init export modules
[transcode] critical: plug-in initialization failed
pwk@mama ~ $