ffmpeg version 4.4.2-1 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 8 (Uos 8.3.0.3-3+rebuild) configuration: --prefix=/usr --extra-version=1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu -- xfade AVOptions: transition..FV....... set cross fade transition (from -1 to 42) (default fade) custom -1 ..FV....... custom transition fade 0 ..FV....... fade transition wipeleft 1 ..FV....... wipe left transition wiperight 2 ..FV....... wipe right transition wipeup 3 ..FV....... wipe up transition wipedown 4 ..FV....... wipe down transition slideleft 5 ..FV....... slide left transition slideright 6 ..FV....... slide right transition slideup 7 ..FV....... slide up transition slidedown 8 ..FV....... slide down transition circlecrop 9 ..FV....... circle crop transition rectcrop 10 ..FV....... rect crop transition distance 11 ..FV....... distance transition fadeblack 12 ..FV....... fadeblack transition fadewhite 13 ..FV....... fadewhite transition radial 14 ..FV....... radial transition smoothleft 15 ..FV....... smoothleft transition smoothright 16 ..FV....... smoothright transition smoothup 17 ..FV....... smoothup transition smoothdown 18 ..FV....... smoothdown transition circleopen 19 ..FV....... circleopen transition circleclose 20 ..FV....... circleclose transition vertopen 21 ..FV....... vert open transition vertclose 22 ..FV....... vert close transition horzopen 23 ..FV....... horz open transition horzclose 24 ..FV....... horz close transition dissolve 25 ..FV....... dissolve transition pixelize 26 ..FV....... pixelize transition diagtl 27 ..FV....... diag tl transition diagtr 28 ..FV....... diag tr transition diagbl 29 ..FV....... diag bl transition diagbr 30 ..FV....... diag br transition hlslice 31 ..FV....... hl slice transition hrslice 32 ..FV....... hr slice transition vuslice 33 ..FV....... vu slice transition vdslice 34 ..FV....... vd slice transition hblur 35 ..FV....... hblur transition fadegrays 36 ..FV....... fadegrays transition wipetl 37 ..FV....... wipe tl transition wipetr 38 ..FV....... wipe tr transition wipebl 39 ..FV....... wipe bl transition wipebr 40 ..FV....... wipe br transition squeezeh 41 ..FV....... squeeze h transition squeezev 42 ..FV....... squeeze v transition duration ..FV....... set cross fade duration (default 1) offset ..FV....... set cross fade start relative to first input stream (default 0) expr ..FV....... set expression for custom transition