[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.

Regards,

-- 
  Nicolas George
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 198 bytes
Desc: Digital signature
URL: <http://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20121102/753986ea/attachment.asc>


More information about the ffmpeg-devel mailing list