Up-to-date syntax: ffmpeg -i input.file -c:v mpeg4 -q:v 5 -tag:v DIVX -s 640x480 -c:a libmp3lame -q:a 5 -ac 2 -ar 44100 output.avi See here for a bit more information anything up to 6 will get you good quality. You can similarly use qscale with libmp3lame, where the range is 0–9, with lower numbers giving better quality. ![]() This will target a given quality, with a variable bit rate. ![]() The qscale range for mpeg4 is 1–31, where lower=better quality/higher filesize, and 3–6 can normally be considered a useful range. ![]() See this blog post for slightly more in-depth information. Either use a higher bit rate and/or use two-pass encoding, or use -qscale to target a quality level in a variable bit rate mode, rather than a specific bit rate.
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