UM:Dvo Effects Dvo Twister

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DVO Twister


DVO Twister is an advanced software standards conversion tool.

To use DVO Twister, you should set up a project and composition configured for your target format.

ch-dvo-twister-menu

This toggle button allows you to enable/disable the DVO Twister effect. By default, as soon as the effect is added it is applied.

Input

ch-dvo-twister-input

Configure the source format for the input.

Rate Format

Select the source format for the conversion. Available modes include common field and framerates.

Note:
Mode Note
3:2 (29.97->23.976) Will perform an automatic inverse telecine process.
Custom Set the input framerate freely.
Field Order

Sets the field order if the input rate format is interlaced.

Values f0:f1 , f1:f0
Default f0:f1


Custom

ch-dvo-twister-custom-input

Rate

Sets the source format rate for the conversion when rate format is set as custom.

Media can be specified to be Progressive or Interlaced.

Range 1.0 - 240.0
Values Progressive (Frames) / Interlaced (Fields)
Default 50.0 / Progressive
Output

ch-dvo-twister-output

Configure the desired format for the output.

Rate Format

Select the output format for the conversion. Available modes include common field and framerates.

Note:
Mode Note
Custom Set output framerate freely.
Field Order

Sets the field order to the output rate when the format is interlaced.

Values f0:f1 , f1:f0
Default f0:f1
Custom

ch-dvo-twister-custom-output

Rate

Sets the output format rate for the conversion when rate format is set as custom.

Media can be specified to be Progressive or Interlaced.

Range 1.0 - 240.0
Values Progressive (Frames) / Interlaced (Fields)
Default 60.0 / Progressive
Process

This section allows the definition of various processing options, including fallback modes.

Motion Mode

ch-dvo-twister-motion-mode

This defines how the images are recreated in the target format.

Mode Note
Motion Compensated This uses motion compensation and is the default. This allows the accurate recreation of fields and frames using the Digital Vision Phame motion vector algorithms.
Interpolated This is a simpler method that recreates correct target fields and frames by careful mixing of the input source. This method will often produce a lower quality result than the motion compensated approach. Try this is if Motion Compensation does not work well.
Nearest This uses no processing other than skipping or repeating frames to output the same clip duration.
Fallback

ch-dvo-twister-fallback

This determines how images that are found unsafe in the set motion mode are to be processed in the target format.

Values Interpolated / Nearest
Default Interpolated
Scene Cut Processing

ch-dvo-twister-scene-cut

DVO Twister has an internal scene detector and the Scene Cut mode determines how images adjacent to a scene cut are processed.

Mode Note
Disable This ignores the cut and force motion processing across the scene cut. This will not provide a clean cut but is sometimes preferred as it is the most accurate representation in terms of alignment in time.
Interpolate This will force processing to be in interpolate mode across the scene cut.
Nearest This will force the processing to be in nearest neighbour giving the best looking edits but not necessary aligned in time. This is the default.
Motion

Motion sets up the motion analysis and its thresholds.

This only has an effect when Process is set to Motion Compensated.

Range

ch-dvo-twister-range

Range affects how motion is detected and selects between three main modes.

A larger mode can help with fast motion and larger images.

Values Normal / Large / X-Large
Default Normal


Smoothness

ch-dvo-twister-smoothness

Smoothness affects how the thresholds between motion and fallback are managed to achieve a preferred blend.

Values 0.0 - 1.0
Default 0.10


Timeline

Defines how the filter should process the timeline.

Ignore Cuts Start

ch-dvo-twister-timeline-cuts-start

This sets the reference in-point for the conversion. Once enabled all conversion will be calculated from start of the source clip.

If disabled it will pay respect to scene edits and use the first frame of each edit as reference frame and start of conversion.

Default Disabled

If the whole timeline is to be converted then Ignore Cuts Start needs to be enabled.

Ignore Cuts End

ch-dvo-twister-timeline-cuts-end

This sets the duration endpoint based upon edits. If enabled, all conversion will be allowed to use frames past the source clip edit.

If disabled it will convert until end of source edit.

Default Enabled
Conversion

ch-dvo-twister-timeline-conversion

This defines the length of the conversion.

Mode Note
Range Will convert the sequence with the frame count as reference.
Duration Will convert the sequence with time as reference. Will add or subtract fields or frames at the end of the sequence to conform. This is the default.
Range+Duration Will convert the sequence with time as reference. Will use the last frame in the source as last frame in target and will manage any anomalies in time/range inbetween.


Keep Orphaned Field

ch-dvo-twister-timeline-keep-orphaned-field

Uses the "other field" (at same time) to complete the last frame if needed.

Default Enabled


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