Hello everyone! Since I have problems creating PSP video files I tried to create a simple mp4 file using output_example.exe. So I run output_example.exe c:\test.mp4 and I received the output: Output #0, mp4, to 'c:\test.mp4': Stream #0.0, -1.#J fps: Video: mpeg4, yuv420p, 352x288, q=2-31, 400 kb/s Stream #0.1: Audio: aac, 44100 Hz, stereo, 64 kb/s Ffmpeg is generated as follows: ffmpeg version CVS, build 3342336, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-shared --enable-memalign-hack --enable-mingw32 --extr a-cflags=-I/local/include --extra-ldflags=-L/local/lib --prefix=/home --disable- debug --disable-ffserver --disable-ffplay --enable-amr_nb --enable-amr_wb --enab le-faac --extra-cflags=-Id:/faac/include --extra-ldflags=-Ld:/faac/libfaac/.libs Even VLC cannot play the file with sound (only the video stream is played). Can you please generate a MP4 file on your computer and try to run it? That would help me. Thanks a lot in advance. Lars