Retime UI

retime_ui.py

import bpy


class RETIMING_PT_panel(bpy.types.Panel):
    bl_label = "Retiming"
    bl_idname = "RETIMING_PT_panel"
    bl_space_type = 'SEQUENCE_EDITOR'
    bl_region_type = 'UI'
    bl_category = 'Strip'

    def draw_header_preset(self, context):
        layout = self.layout
        layout.alignment = 'RIGHT'
        strip = context.active_sequence_strip
        icon = "HIDE_OFF" if strip.show_retiming_keys else "HIDE_ON"
        layout.prop(strip, "show_retiming_keys", text="", icon_only=True, emboss=False, icon=icon)

    def draw(self, context):
        layout = self.layout
        layout.use_property_split = True
        layout.use_property_decorate = False

        seq_editor = context.scene.sequence_editor
        active_strip = seq_editor.active_strip

        if active_strip and active_strip.type == 'MOVIE':
            retiming_keys = active_strip.retiming_keys
            col = layout.column(align=True)
            for count, key in enumerate(retiming_keys):
                col.prop(key, "timeline_frame", text="Keys" if not count else " ")


def register():
    bpy.utils.register_class(RETIMING_PT_panel)


def unregister():
    bpy.utils.unregister_class(RETIMING_PT_panel)


if __name__ == "__main__":
    register()