OK, thanks a lot for your prompt answer :) 2014-12-22 15:15 GMT+01:00 Stefano Sabatini <[email protected]>:
> On date Monday 2014-12-22 15:11:56 +0100, Arnaud Bienner encoded: > > Hi, > > > > Looking at the examples provided with ffmpeg (2.5) there are two examples > > to scale an image if I'm right: scaling_video.c but also > filtering_video.c, > > which filter is "scale=78:24" so I assumed it is also doing some scaling. > > > > > I believe that once the filter will be parsed and interpreted, this will > > lead to same underlying code being executed, but I just wanted to be > sure. > > Or is there any reason to prefer on method over the other, regarding > > performance/features available? (except that filters are probably more > > convenient to use, but here I'm really interested in performance issues, > or > > features missing when using filters and vice versa). > > The scale filter provides a high-level wrapper around libswscale. If > you don't want/need to use other filters, e.g. to build complex > filtergraphs, then probably it's better to use libswscale directly, to > not incur in the libavfilter filtering (relatively small) overhead. > -- > FFmpeg = Fundamentalist Formidable Mean Prodigious Exciting Gem > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user >
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