#4298: zoompan filter creates shaky image ------------------------------------+------------------------------------ Reporter: slhck | Owner: Type: defect | Status: open Priority: normal | Component: avfilter Version: git-master | Resolution: Keywords: zoompan | Blocked By: Blocking: | Reproduced by developer: 1 Analyzed by developer: 0 | ------------------------------------+------------------------------------ Comment (by jdlh): Replying to [comment:4 slhck]:
Inserting the scale filter before (as Carl-Eugen suggested) with video magically makes the output 720p, without me requesting that.
{{{ ffmpeg -i test.mp4 -vf "scale=640:360, zoompan=z='min(zoom+0.0015,1.5)':d=125" out.mp4 [... omitted for brevity ...] }}}
The 720p output is expected. Note that [http://ffmpeg.org/ffmpeg- all.html#zoompan the '''zoompan''' filter defaults to an output image size of hd720], unless the invocation asks for a different size by means of the `s` option. For a proper test, this command should be revised to {{{ffmpeg -i test.mp4 -vf "scale=640:360, zoompan=z='min(zoom+0.0015,1.5)':d=125:s=640x360" out.mp4}}} One of the example zoompan filter invocations in the documentation demonstrates setting the output size this way. -- Ticket URL: <https://trac.ffmpeg.org/ticket/4298#comment:9> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker