[FFmpeg-user] Confusion about quality parameters

Ulf Zibis Ulf.Zibis at gmx.de
Tue Jun 25 21:40:06 EEST 2019

Am 25.06.19 um 20:18 schrieb Carl Eugen Hoyos:
> Am Di., 25. Juni 2019 um 20:07 Uhr schrieb Ulf Zibis <Ulf.Zibis at gmx.de>:
>> Question 4.) So why is the default of the dev build set to such bad
>> quality and why are the q factors such incoherent?
> It is not "set to such bad quality" but your command line didn't make
> sense.
I originally started with:

./ffmpeg -i in.mp4 -vf some-filter -c:a copy out.mp4

This resulted in a very bad quality with a quarter of filesize of the
original, so to exclude the filter for causing this I used the
"non-sense' command line for test.


More information about the ffmpeg-user mailing list