I ran into one problem, and found a solution. I hope this helps and please let me know if you have additional questions. Incompatible command line syntax improvements in its replacement called avconv It has been deprecated in the Libav project to allow for The ffmpeg program is only provided for script compatibility and will be removed

To maximise your FFmpeg usage look into getting a dedicated server, You will be able to run these multi core tasks faster.Avconv version 0.8.16-6:0.8.16-1, Copyright (c) 2000-2014 the Libav developersįfmpeg version 0.8.16-6:0.8.16-1, Copyright (c) 2000-2014 the Libav developers Or for something a little quicker: ffmpeg -i inputfilename.mp4 -c:v libx264 -preset slower -crf 22 outputfilename.mp4 To put it into one command something like this will take time but give a really good compress: ffmpeg -i inputfilename.mp4 -c:v libx264 -preset veryslow -crf 21 outputfilename.mp4 21 or 22 i find to be best but once you start going above 25 the quality drops away. 0 is lossless but a value of 17 or 18 is still visually lossless. The slowest FFmpeg -preset is veryslow followed by slower and then slow.ĬRF means constant rate factor, essentially it is the bitrate amount without it being specific. Preset is the encoding to compression rate, The slower = better compression and therefor more quality in a smaller size.

The two factors with FFmpeg that will best determine your output size is the -preset and -crf The more cores and speed (Ghz) of your CPU the better. Be aware that compressing video uses a lot of CPU. If you want to make your video file that bit smaller whilst retaining its quality here is how with FFmpeg.

What is ffmpeg 18