[FFmpeg-user] Convert flv to mp4. Bad video quality

[Flavio Sartoretto]

Thank you Ulf for your suggestion.
Michael Koch suggested me to use -q:v 1, which is ok!
Thanks anyway!
Prof. Flavio Sartoretto
gia' Docente di Calcolo Scientifico
Universita' Ca' Foscari Venezia


On Fri, May 28, 2021 at 12:02 PM Ulf Zibis <Ulf.Zibis at cosoco.de> wrote:
>
>
> Am 28.05.21 um 11:44 schrieb Michael Koch:
> > Am 28.05.2021 um 11:25 schrieb Flavio Sartoretto:
> >> I use ffmpeg in order to convert fname.flv video to mp4:
> >> ffmpeg -i fname.flv -c:v mpeg4 -copyts -loglevel verbose fname.mp4
> >>
> >> The video quality of my output is bad. How can I improve it?
> >
> > Add -q:v 1 to your command line. The number does specify the compression ratio. 0 ist best quality and 9 is highest compression.
>
> Alternatively you may drop "-c:v mpeg4". Then libx264 is used instead FFmpegs internal mpeg4 encoder by default and you will get good quality.
>
> -Ulf
>
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