user: What is Add Movie Strip and how is it used in Blender Python scripting?

assistant: Move Strips
:   Use mouse to position strip in timeline immediately after adding. If this option is enabled, Start Frame and
    Channel properties are not displayed.

Start Frame
:   The [Start Frame](../../../../editors/video_sequencer/sequencer/sidebar/strip.xhtml#bpy-types-strip-frame-start) to place the left handle of the strip.

Channel
:   The [Channel](../../../../editors/video_sequencer/sequencer/channels.xhtml) to place the strip.

Relative Path
:   Store the location of the image file relative to the blend-file.

Replace Selection
:   Replaces the currently selected strips with the new strip.

Fit Method
:   Determines how images with an aspect ratio different than the scene’s
    [Resolution](../../../../render/output/properties/format.xhtml#bpy-types-rendersettings-resolution-x) are scaled to fit inside the render area.

    Scale to Fit:
    :   Adjusts the strips [Scale Transforms](../../../../editors/video_sequencer/sequencer/sidebar/strip.xhtml#bpy-types-striptransform-scale) so the visual contents of
        the strip to fit exactly within the project’s [Resolution](../../../../render/output/properties/format.xhtml#bpy-types-rendersettings-resolution-x)
        while maintaining the original aspect ratio.

        This may mean that the transparent areas may be added
        along the content’s border to fit the content in the rendered area.

    Scale to Fill:
    :   Adjusts the strips [Scale Transforms](../../../../editors/video_sequencer/sequencer/sidebar/strip.xhtml#bpy-types-striptransform-scale)
        so the visual contents of the strip to span the project’s
        [Resolution](../../../../render/output/properties/format.xhtml#bpy-types-rendersettings-resolution-x) while maintaining the original aspect ratio.

        This may mean that portions of the original image no longer fit the content inside the rendered area.

    Stretch to Fill:
    :   Adjusts the strips [Scale Transforms](../../../../editors/video_sequencer/sequencer/sidebar/strip.xhtml#bpy-types-striptransform-scale) so the visual contents of
        the strip to fill the project’s [Resolution](../../../../render/output/properties/format.xhtml#bpy-types-rendersettings-resolution-x). Note, unlike
        the other two methods described above, *Stretch to Fill* does not maintaining the original aspect ratio.

        This may mean that the original image becomes distorted to fit the content inside the rendered area.

Set View Transform
:   Automatically sets an appropriate [View Transform](../../../../render/color_management/displays_views.xhtml#bpy-types-colormanagedviewsettings-view-transform)
    based on the [Color Space](../../../../glossary/index.xhtml#term-Color-Space) of the imported media. In most cases, the *Standard* should be used;
    using the wrong transform could result in inaccurate colors or degraded rendering performance.

Adjust Playback Rate
:   Automatically adjusts the video’s speed to playback at the original speed regardless of the scene’s frame rate.

Sound
:   Add a [Sound Strip](sound.xhtml) that contains the movie’s audio track.

Set Scene Frame Rate
:   Sets the [Scene Frame Rate](../../../../render/output/properties/format.xhtml#bpy-types-rendersettings-fps) to the frame rate encoded in the movie file.