[FFmpeg-user] Slight blur on converted video

[Carl Eugen Hoyos]

2017-03-27 12:19 GMT+02:00 Moritz Barsnick <barsnick at gmx.net>:
> On Mon, Mar 27, 2017 at 10:08:02 +0200, Carl Eugen Hoyos wrote:
>> Doesn't "-profile:v 3" increase the quality?
>> Please remove qscale from your command line, it has no effect on prores
>> encoding.
>
> From the Wiki:
> https://trac.ffmpeg.org/wiki/Encode/VFX#Prores
>
>   From empirical testing we've found that a qscale of 9 - 13 gives a
>   good result without exploding the space needed too much.
>
> The given command lines also use qscale.

qscale apparently makes a difference for prores_ks, not for prores.

I wonder now if the described issue shouldn't be very different
for different values of qscale (and different for prores and
prores_ks).

Thank you for pointing this out, Carl Eugen