It would be ideal to have the encoder optimizes visual quality. However, the ideal of "visual" metric is subjective and the related research is ongoing. Actually libaom has support for VMAF and other metrics but they probably require a different config while compiling libaom. PSNR and SSIM are two metrics that the library definitely has default support with.
On Tue, Mar 3, 2020 at 2:50 PM Carl Eugen Hoyos <[email protected]> wrote: > Am Di., 3. März 2020 um 22:43 Uhr schrieb Wang Cao <[email protected]>: > > > +@item tune (@emph{tune}) > > +Set the distortion metric tuned with for encoder. Default is PSNR. > > + > > +@table @samp > > +@item psnr (@emph{0}) > > +PSNR as distortion metric > > + > > +@item ssim (@emph{1}) > > +SSIM as distortion metric > > +@end table > > My knowledge of video encoding is limited but I would have > expected (actually I was sure) that the default would be > "visual" or similar and not an artificial metric. > > Does this mean libaom is only made to please automatic > comparison tests? > > Carl Eugen > _______________________________________________ > ffmpeg-devel mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". -- Wang Cao | Software Engineer | [email protected] | 650-203-7807 _______________________________________________ ffmpeg-devel mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
