I am trying to transcode the file "avi_transcode_error_on_windows_build.avi" to flv with the following command line: ffmpeg.exe -i "avi_transcode_error_on_windows_build.avi" -b 256000 -s 320x240 -deinterlace -ab 32 -ar 22050 -y "avi_transcode_error_on_windows_build.flv" After few seconds ffmpeg crash. The problem is not relative to destination file format (ffmpeg.exe crash also if transcode is set to mpeg or any other format). The same avi file converted on linux with the same command line work well. This is the output of ffmpeg in dos ------------------------------------------------------- C:\xcasa>ffmpeg.exe -i avi_transcode_error_on_windows_build.avi -b 256000 -s 320 x240 -deinterlace -ab 32 -ar 22050 -y avi_transcode_error_on_windows_build.flv FFmpeg version SVN-r16596-Sherpya, Copyright (c) 2000-2009 Fabrice Bellard, et a l. libavutil 49.12. 0 / 49.12. 0 libavcodec 52.10. 0 / 52.10. 0 libavformat 52.23. 1 / 52.23. 1 libavdevice 52. 1. 0 / 52. 1. 0 libavfilter 0. 2. 0 / 0. 2. 0 libswscale 0. 6. 1 / 0. 6. 1 libpostproc 51. 2. 0 / 51. 2. 0 built on Jan 14 2009 07:24:48, gcc: 4.2.5 20080919 (prerelease) [Sherpya] Input #0, avi, from 'avi_transcode_error_on_windows_build.avi': Duration: 00:00:01.36, start: 0.000000, bitrate: 30246 kb/s Stream #0.0: Video: dvvideo, yuv411p, 720x576, 25.00 tb(r) Stream #0.1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s Output #0, flv, to 'avi_transcode_error_on_windows_build.flv': Stream #0.0: Video: flv, yuv420p, 320x240, q=2-31, 256 kb/s, 25.00 tb(c) Stream #0.1: Audio: libmp3lame, 22050 Hz, stereo, s16, 0 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press [q] to stop encoding ---------------------------------------------------