Internal filters
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Revision as of 04:20, 6 September 2015
The available (internal) filters are listed here and divided into categories. A short description is added, including the supported color formats (and sample types for the audio filters). There are some functions which combine two or more clips in different ways. How the video content is calculated is described for each function, but here is a summary which explains which properties that the resulting clip will have.
An alphabetical listing of the internal filters can be found here Category:Internal_filters.
Contents |
Media file filters
These filters can be used to read or write media files. Usually they produce source clips for processing. See debug filters for non-file source filters.
| Filter | Description | Color format |
|---|---|---|
| AviSource / AviFileSource / OpenDMLSource | Opens an AVI file. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| DirectShowSource | Opens a filename using DirectShow. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| ImageReader / ImageSource / ImageSourceAnim | These filters produce a video clip by reading in still images or animated images. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| ImageWriter | Writes frames as images to your hard disk. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Import | Imports an AviSynth script into the current script. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| SegmentedAviSource / SegmentedDirectShowSource | This filter automatically loads up to 100 avi files per argument. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| WavSource | Opens a WAV file or the audio of an AVI file. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| SoundOut | SoundOut is a GUI driven sound output module for AviSynth (it exports audio to several compressors). | All audio. |
Color conversion and adjustment filters
These filters can be used to change the color format or adjust the colors of a clip.
| Filter | Description | Color format |
|---|---|---|
| ColorYUV | Adjusts colors and luma independently. | YUY2, Y8, YV411, YV12, YV16, YV24 |
| ConvertBackToYUY2 | Converts a RGB clip back to YUY2. | RGB24, RGB32 |
| ConvertToRGB | Converts to RGB32 unless clip is RGB24. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| ConvertToRGB24 / ConvertToRGB32 / ConvertToYUY2 / ConvertToY8 / ConvertToYV411 / ConvertToYV12 / ConvertToYV16 / ConvertToYV24 | Converts to RGB24 / RGB32 / YUY2 / Y8 / YV411 / YV12 / YV16 (planar version of YUY2) / YV24 (full YUV). | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| FixLuminance | Correct shifting vertical luma offset. | YUY2 |
| GreyScale | Converts a video to greyscale. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Invert | Inverts selected color channels of a video. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Levels | The Levels filter scales and clamps the blacklevel and whitelevel and adjusts the gamma. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Limiter | A filter for clipping levels to within CCIR-601 range. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| MergeARGB / MergeRGB | This filter makes it possible to select and combine a color channel from each of the input videoclips. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| MergeChroma / MergeLuma | This filter makes it possible to merge chroma/luma from a videoclip into another. There is an optional weighting, so a percentage between the two clips can be specified. | YUY2, Y8, YV411, YV12, YV16, YV24 |
| Merge | This filter makes it possible to merge both luma and chroma from a videoclip into another. There is an optional weighting, so a percentage between the two clips can be specified. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| RGBAdjust | Adjusts each color channel seperately. | RGB24, RGB32 |
| ShowAlpha / ShowRed / ShowGreen / ShowBlue | Shows the selected channel of an (A)RGB clip. | RGB24, RGB32 |
| SwapUV | Swaps chroma channels. | YUY2, Y8, YV411, YV12, YV16, YV24 ? |
| Tweak | Adjusts the hue, saturation, brightness, and contrast. | YUY2, Y8, YV411, YV12, YV16, YV24 |
| UToY / VToY | Copies chroma U/V plane to Y plane. | YUY2, Y8, YV411, YV12, YV16, YV24 |
| UToY8 / VToY8 | Shorthand for UToY.ConvertToY8 / VToY.ConvertToY8. | YUY2, YV411, YV12, YV16, YV24 |
| YToUV | Puts the luma channels of two clips as U and V channels. Luma is now 50% grey. | YUY2, Y8, YV411, YV12, YV16, YV24 |
Overlay and Mask filters
These filters can be used to layer clips with or without using masks and to create masks.
| Filter | Description | Color format |
|---|---|---|
| ColorKeyMask | Sets the alpha-channel (similar as Mask does) but generates it by comparing the color. | RGB32 |
| Layer | Layering two videos. | RGB32, YUY2 |
| Mask | Applies an alpha-mask to a clip. | RGB32 |
| MaskHS | This filter returns a mask (as Y8) of clip using a given hue and saturation range. | YUY2, Y8, YV411, YV12, YV16, YV24 |
| Overlay | Overlay puts two clips on top of each other with an optional displacement of the overlaying image, and using different overlay methods. Furthermore opacity can be adjusted for the overlay clip. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| ResetMask | Applies an "all-opaque" alpha-mask to clip. | RGB32 |
| Subtract | Produces an output clip in which every pixel is set according to the difference between the corresponding pixels. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16 (?), YV24 |
Geometric deformation filters
These filters can be used to change image size, process borders or make other deformations of a clip.
| Filter | Description | Color format |
|---|---|---|
| AddBorders | Adds black borders around the image. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Crop | Crops excess pixels from each frame. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| CropBottom | Crops excess pixels from the bottom of each frame. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| FlipHorizontal / FlipVertical | Flips the video from left to right/upside-down. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Letterbox | Letterbox simply blackens out the top and the bottom and optionally left and right side of each frame. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| HorizontalReduceBy2 / VerticalReduceBy2 / ReduceBy2 | Reduces the size of each frame by half horizontally, vertically or in both directions. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| BicubicResize / BilinearResize / BlackmanResize / GaussResize / LanczosResize / Lanczos4Resize / PointResize / SincResize / Spline16Resize / Spline36Resize / Spline64Resize | The resize filters rescale the input video frames to an arbitrary new resolution, using different sampling algorithms. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| SkewRows | SkewRows skews the rows of a clip. | RGB24, RGB32, YUY2, Y8 |
| TurnLeft / TurnRight / Turn180 | Rotates the clip 90 degrees counter-clockwise / 90 degrees clockwise. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
Pixel restoration filters
These filters can be used for image detail (pixel) restoration (like denoising, sharpening) of a clip.
| Filter | Description | Color format |
|---|---|---|
| Blur / Sharpen | This a simple 3x3-kernel blurring/sharpening filter. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| GeneralConvolution | General 3x3 or 5x5 convolution matrix. | RGB32 |
| SpatialSoften / TemporalSoften | Removes noise from a video clip by selectively blending pixels spatially/temporally. | YUY2 (SpatialSoften), Y8, YV411, YV12, YV16, YV24 |
| FixBrokenChromaUpsampling | The free Canopus DV Codec v1.00 upsamples the chroma channels incorrectly (although newer non-free versions appear to work fine). FixBrokenChromaUpsampling filter compensates for it. | YUY2 |
Timeline editing filters
These filters can be used to arrange frames in time (clip cutting, splicing and other editing).
| Filter | Description | Color format |
|---|---|---|
| AlignedSplice / UnalignedSplice | Joins two or more video clips end to end. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| AssumeFPS / AssumeScaledFPS / ChangeFPS / ConvertFPS | Changes framerate and/or video speed in different ways. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| DeleteFrame | Deletes a single frame, given as an argument. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Dissolve | Like AlignedSplice, except that the clips are combined with some overlap. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| DuplicateFrame | Duplicates a single frame given as an argument. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| FadeIn0 / FadeIn / FadeIn2 / FadeOut0 / FadeOut / FadeOut2 / FadeIO0 / FadeIO / FadeIO2 | Causes the video stream to fade linearly to black at the start or end. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| FreezeFrame | Replaces all the frames between first-frame and last-frame with a selected frame. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Interleave | Interleaves frames from several clips on a frame-by-frame basis. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Loop | Loops the segment from start frame to end frame a given number of times. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Reverse | This filter makes a clip play in reverse. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| SelectEven / SelectOdd | Makes an output video stream using only the even/odd numbered frames. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| SelectEvery | Selects frames with a fixed period, it is a generalization of SelectEven and SelectOdd. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| SelectRangeEvery | Selects a range of frames with a fixed period. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Trim | Trims a video clip so that it includes only the frames first_frame through last_frame. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
Interlace filters
These filters can be used for creating and processing field-based material (which is frame-based material separated into fields). AviSynth is capable of dealing with both progressive and interlaced material. The main problem is, that it often doesn't know what it receives from source filters. This is the reason that the field-based flag exists and can be used when dealing with interlaced material. More information about field-based video can be found here.
| Filter | Description | Color format |
|---|---|---|
| AssumeFrameBased / AssumeFieldBased | Forces frame-based or field-based material. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| AssumeBFF / AssumeTFF | Forces field order. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Bob | Bob takes a clip and bob-deinterlaces it. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| ComplementParity | Changes top fields to bottom fields and vice-versa. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| DoubleWeave | The filter operates like Weave, except that it produces double the number of frames by combining both the odd and even pairs of fields. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| PeculiarBlend | This filter blends each frame with the following frame in a peculiar way. | YUY2 |
| Pulldown | This filter simply selects two out of every five frames of the source video. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| SeparateColumns / SeparateRows | Takes a clip and separates the columns or rows of each frame into new frames. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| SeparateFields | Takes a frame-based clip and splits each frame into its component top and bottom fields. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| SwapFields | Swaps the two fields in an interlaced frame. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Weave | Takes even pairs of fields from a Fields Separated input video clip and combines them together to produce interlaced frames. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| WeaveColumns / WeaveRows | Takes a clip and weaves sets of columns or rows together to produce composite frames. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
Audio processing filters
These filters can be used to process audio. Audio samples from a clip will be automatically converted if any filters requires a special type of sample. This means that if a filter doesn't support the type of sample it is given, it will automatically convert the samples to something it supports. The internal formats supported in each filter is listed in the sample type column. A specific sample type can be forced by using the ConvertAudio functions.
If the sample type is float, when AviSynth has to output the data, it will be converted to 16 bit, since float cannot be passed as valid AVI data.
| Filter | Description | Sample type |
|---|---|---|
| Amplify / AmplifydB | Amplify multiply audio samples by amount. | 16 bit, Float |
| AssumeSampleRate | Adjusts the playback speed of the audio. | All |
| AudioDub / AudioDubEx | AudioDub takes the video stream from the first argument and the audio stream from the second argument and combines them. AudioDubEx is similar, but it doesn't throw an exception if both clips don't have a video or audio stream. | All |
| AudioTrim | Trims an audio clip so that it includes only the start_time through end_time. | All |
| ConvertAudioTo8bit / ConvertAudioTo16bit / ConvertAudioTo24bit / ConvertAudioTo32bit / ConvertAudioToFloat | Converts audio samples to 8/16/24/32/Float bits. | All |
| ConvertToMono | Merges all audio channels. | 16 bit, Float |
| DelayAudio | Delays the audio track by second seconds. | All |
| EnsureVBRMP3Sync | Corrects out-of-sync MP3-AVI's, when seeking or trimming. | All |
| GetChannel / GetLeftChannel / GetRightChannel | Returns an audio channel from a clip. | All |
| KillAudio / KillVideo | Removes the audio or video from a clip completely. | All |
| MergeChannels | Merges channels of two audio clips. | All |
| MixAudio | Mixes audio from two clips. | 16 bit, Float |
| MonoToStereo | Converts two mono signals to one stereo signal. | 16 bit, Float |
| Normalize | Amplifies the entire waveform as much as possible, without clipping. | 16 bit, Float |
| ResampleAudio | Performs a high-quality change of audio sample rate. | 16 bit |
| SuperEQ | High quality 18 band sound equalizer. | Float |
| SSRC | Very high quality samplerate conversion. | Float |
| TimeStretch | This filter can change speed of the sound without changing the pitch, and change the pitch of a sound without changing the length of a sound. | Float |
Conditional and other meta filters
Meta filters can be used to control other filters execution. The basic characteristic of conditional filters is that 'their scripts' are evaluated (executed) at every frame instead of the whole clip. This allows for complex video processing that would be difficult or impossible to be performed by a normal AviSynth script.
| Filter | Description | Color format |
|---|---|---|
| ConditionalFilter / FrameEvaluate / ScriptClip / ConditionalSelect | ConditionalFilter returns source1 if some condition is met, otherwise it returns source2. ScriptClip/FrameEvaluate returns the clip which is returned by the function evaluated on every frame. ConditionalSelect returns one frame from several sources based on an integer evaluator. | YUY2 ?, YV12 |
| ConditionalReader | ConditionalReader allows you to import information from a text file, with different values for each frame - or a range of frames. | YUY2 ?, YV12 |
| WriteFile / WriteFileIf / WriteFileStart / WriteFileEnd | These filters evaluate expressions and output the results to a text-file. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 ? |
| Animate / ApplyRange | Animate (ApplyRange) is a meta-filter which evaluates its parameter filter with continuously varying (the same) arguments. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 ? |
| TCPServer / TCPSource | This filter will enable you to send clips over your network. You can connect several clients to the same machine. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
Debug filters
| Filter | Description | Color format |
|---|---|---|
| BlankClip / Blackness | This filter produces a solid color, silent video clip of the specified length (in frames). | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| ColorBars / ColorBarsHD | This filters produce a video clip containing SMPTE colorbars scaled to any image size. | RGB32, YUY2, YV12, YV24 |
| Compare | Compares two clips and prints out information about the differences. | RGB24, RGB32, YUY2, YV12 |
| Echo | Forces getframe calls to all input clips. Returns only first clip result. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Histogram | Adds a histogram. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Info | Prints out image and sound information. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| MessageClip | Produces a clip containing a text message. | RGB32 |
| Preroll | Preroll the audio or video on non linear access. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| ShowFiveVersions | Takes five video clips and combines them in a staggered arrangement from left to right. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16 (?), YV24 |
| ShowFrameNumber / ShowSMPTE / ShowTime | Draws text on every frame indicating what number AviSynth thinks it is. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| StackHorizontal / StackVertical | Takes two or more video clips and displays them together in left-to-right/up-to-down order. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Subtitle | Adds a single line of anti-aliased text to a range of frames. | RGB24, RGB32, YUY2, Y8, YV411, YV12, YV16, YV24 |
| Tone | This will generate sound. | Float |
| Version | Generates a video clip with a short version and copyright statement. | RGB24 |
