Hello Using a basic Sony camcorder, I recorded a two-hour conference whose picture is a bit dark. I tried applying a filter in AviDemux and saving the file, but for some reason, there's no sound when played in VLC :-/ Before trying other NLE applications (VirtualDub, Sony Vegas, etc.), I was wondering if ffmpeg could apply some filters before further reducing the filesize? FWIW... 1. here's what the original file looks like: Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0:1[0x80]: Audio: ac3, 48000 Hz, 5.1(side), s16, 448 kb/s 2. Using the following command, ffmpeg reduces the original 9GB to 340MB: ffmpeg -i input.mpg -c:v libx264 -vf scale=iw/2:-1 -preset faster -c:a ac3 -ab 192k output.mp4 Thank you.