On Thu, Oct 14, 2021 at 12:59 PM Michael Koch <[email protected]> wrote:
> Am 14.10.2021 um 12:53 schrieb Paul B Mahol: > > On Thu, Oct 14, 2021 at 12:29 PM Michael Koch < > [email protected]> > > wrote: > > > >> Am 14.10.2021 um 12:07 schrieb Paul B Mahol: > >>> Sorry but I'm not on windows, so I can not use your script. > >> Then try the below (slightly improved) version. It would become much > >> simpler with variables: > >> ARRAY_H = pow(2,ceil(log(ceil(W*10/9))/log(2))) > >> ARRAY_V = pow(2,ceil(log(ceil(H*10/9))/log(2))) > >> > >> The test image contains wavelengths from 4 to 8 (in the center) to 16 > >> pixels per linepair. > >> The filter wavelength is independant of input size. You can change the > >> size in the first command (but it must be 1:1 aspect ratio, otherwise > >> hstack would fail) > >> > > Since when hstack fails because of different aspect ratio? > > Because I first make the left half of the test image, then transpose it > and then hstack them together > > The fftfilt examples do of course work with any aspect ratio. > I think you do not understand what aspect ratio really means. > > Michael > > _______________________________________________ > ffmpeg-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". > _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
