[FFmpeg-devel] [PATCH] ffmpeg: complain loudly and exit in case of -sameq

Nicolas George nicolas.george at normalesup.org
Fri Nov 2 13:35:18 CET 2012

Le duodi 12 brumaire, an CCXXI, Clément Bœsch a écrit :
> I'd say something like "Option '%s' was removed. If you are looking for an
> option to preserve the quality (which is not what -%s was for), use -qscale
> 0 or an equivalent quality factor option." instead.

A FAQ entry may be a better solution:

Q: Where did the -sameq option go?

A: The -sameq option meant "same quantizer", and made sense only in a very
limited set of cases. Unfortunately, a lot of people mistook it for "same
quality" and used it in places where it did not make sense: it had roughly
the expected visible effect, but achieved it in a very inefficient way.

Each encoder has its own set of options to set the quality-vs-size balance,
use the options for the encoder you are using to set the quality level to a
point acceptable for your tastes. The most common options to do that are
-qscale and -qmin.


  Nicolas George
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