On Sat, 16 Mar 2019, 22:28 jys, <junkyardspar...@yepmail.net> wrote: > [...] either because the Hero 6 has a different lens, or because the video > is already partially corrected (is that what "linear mode" does?) >
Googling suggests that the lenses are the same in the 5 and 6 (from a sample of one reviewer), so my guess is the data will work for non-linear mode. I would just use the "lenscorrection" filter: > This seems like a good solution for now. Would it make sense to add a calibration for linear mode for the future? I know that we don't normally add data for pre-corrected things, but we also don't have a good way of communicating to GoPro users that you get better quality by not using linear mode if you're going to use lensfun to correct it afterwards. (And I don't know whether that's a reasonable suggestion anyway). Graeme On Sat, Mar 16, 2019, at 12:17, Ariel Elkin wrote: > > Hello, > > > > I’d like to use lensfun to do lens correction on footage from a GoPro > HERO 6. > > > > Here’s a snapshot from the footage: > > https://i.imgur.com/0STHMkD.jpg > > > > Even though the footage was shot in linear mode, you can still see as a > > result of the fisheye lens distortion: the window frame on the left > > appears curved. > > > > Given this sample syntax from the ffmpeg documentation: > > ffmpeg -i input.mov -vf lensfun=make=Canon:model="Canon EOS > > 100D":lens_model="Canon EF-S 18-55mm f/3.5-5.6 IS > > STM":focal_length=18:aperture=8 -c:v h264 -b:v 8000k output.mov > > > > I’m not clear what values I should put for make, model, lens_model, > > focal_length, and aperture. On lensfun lens list I see GoPro and > > fixed_lens but how exactly should I use that with ffmpeg? > > > > Thanks > >https://www.fastmail.com/mail/traffic.lensfun/?u=156841ae > > Ariel > > > _______________________________________________ > Lensfun-users mailing list > Lensfun-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/lensfun-users >
_______________________________________________ Lensfun-users mailing list Lensfun-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lensfun-users
