AVISYNTH USER GUIDE PDF

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Useful for splitting files. All pretty straightforward stuff. The Video Menu The Video menu is where you set all the options for video processing. This is where you can choose different things to alter the way your video looks such as resizing and so on.

However, all of these things are done much much better in Avisynth. Using this guide you will never use these options - they only operate in RGB32 which is not always what we want. Frame Rate This is another option you will never want to use. Color Depth This just sets what bit depth will be displayed during decoding.

The defaults are fine Compression This is an option you will use a lot. This is where you set the Video Compressor you want to use when saving the file.

Select Range This does the same thing that you can do by scrubbing the Trackbar and setting the Start and End. Direct Stream Copy - This will take the input video and copy it exactly to an output.

This is very useful for extracting sections of avi file. When setting a section to extract you should select keyframes otherwise the exported section may not play back. Fast recompress - This is the option we will always use for compression.

It takes the input video and send it to the Compressor without doing any conversion. As we will almost always use avisynth to process the video we can guarantee it is ready to be sent straight to the compressor.

Normal recompress - This converts the footage to RGB and then sends it to the compressor. Colorspace changes should always be avoided if possible - not recommended. Full processing mode - This converts the footage to RGB, applies any internal VirtualDub-style filters and send the video to the compressor. Again any processing should be done in Avisynth for quality reasons, so this option will rarely be used if ever.

Error mode This allows you to choose how virtualdub will report errors. Default is fine. OK that should do as an overview of the video options. Before looking at ways to export the video you process in VirtualDubMod you will probably want to know where the audio options are. VirtualDubMod has a completely different way of dealing with audio which works in a way which is much more useful for people producing files in containers which can hold all sorts of video, audio and subtitle data.

Allows you to set chapter information so people can skip to specific points in a file. Not much use for individual amvs but could be handy for projects with lots of different videos. Stream list - THIS is where all the audio stuff has been hidden. We will have a closer look at this in a moment. Report - this will display a little text dump of the streams that are going to be contained in your export.

To find the audio settings you will need to select Stream list. Inside you will get a menu dedicated to audio and subtitle streams. The WAV stream has been disabled which is why it is checked with grey lines. If I exported a video with this stream list then I would get the second stream the mp3 stream.

I can also deselect the speaker icon which means the stream is not previewed in when playing in VirtualDubMod but it will still be exported. Multiple audio streams are supported by all containers one way or another but will not be of great use to you as an amv creator. If you want to use these options you should read up on multiple audio streams as they sometimes need extra things installed for people to select which stream to hear.

Comments and Chapters - these are duplicates of the menu you saw before except you can put comments on the individual streams. Save WAV - This is an option that allows you to select a stream in the list and do a direct conversion to a wav file. Demux - This rips the audio data from the video without converting it to WAV. This will give a wav, mp3, ogg or whatever audio type was being used in the video.

Delete - This deletes a selected stream. Traditional VirtualDub users may be wondering where the audio processing options are. Fear not. By right-clicking a stream you will bring up a menu that looks just like the old VirtualDub audio menu: Interleaving Audio is separated and processed in frames just like video and for playback it is best if they are interleaved. You can check out the interleaving option but the default setting of 1 frame is fine for this. This also allows you to set any audio offset but with amvs it is unlikely that your audio will need to be offset to sync with the video, if edited correctly.

This allows you to use ACM audio compression codecs. Use advanced filtering - virtualdub now has options to do interesting things with audio such as Pitch shift, Gain, Chorus effects and so on.

If you select this option the Filters It works just like the video filters where you add audio filters one after another and choose their options. This is a simplified version of the filtering which does things like convert the sample rate of an audio stream. It is very unlikely that you will want to do this as things like stereo, sample rate, audio bit depth and so on should be kept as they were originally unless you have some particular reason to force a change.

Straightforward this one, boosts the audio relative to the current audio level. This can cause clipping however and is not as useful as normalisation, which we will discuss in the audio guides. Direct Stream Copy - This will not process the input audio stream, it will just copy it as it.

Full processing mode - will convert the audio stream to wav, process it using any selected filters and then compress it using the ACM compressor chosen in the Compression menu. We will look at this in the audio encoding section. We will return to these features when it comes to compressing audio but it should be clearer now how you use this section for adding and removing audio streams. Arduous no more.

VirtualDubMod has a sophisticated Avisynth Script Editor that you can use to edit and see the changes in your avisynth scripts instantly. When you load a. This is what you should see something similar to this: The Avisynth editor is a simple text editor but it has some very nice features, especially in the way it intergrates with VirtualDubMod.

The first thing you might notice is the way the functions are coloured. Functions that have been identified as being present in Avisynth or in one of the plugins are highlighted green. Inside the brackets we have the function options highlighted blue. File names are usually highlighted in maroon. If you change the settings of colorbars to colorbars ,4blah it will be highlighted in red as an obvious error.

Add the following line to the end of the script: bicubicresize , If you have typed it in correctly it should have the correct highlighting. Now press F5. As if by magic, the changes are shown straight away in VirtualDubMod.

What has happened is that the avs script has been saved, reloaded and VirtualDubMod has seeked the video to the last frame you were looking at. This is immensely useful as it means you can apply filters and see exactly how they affect a particular frame straight away. You can see this option listed individually in the File menu along with many others - all of them should be pretty self explanatory: just remember that F5 will save your script so you cannot revert if you have looked at the results using F5.

You can, thankfully use Undo Ctrl-Z as well to undo things you may have done wrong. This method of playing with avs scripts is so much easier than using wordpad and importing, but you will need to resort to wordpad on occasion - particularly if you have a script which is crashing VirtualDubMod in nasty ways : This functionality alone makes this priceless but there are even more tricks that you can do with avs in VirtualDubMod: Select a Start and End area on the VirtualDubMod Trackbar.

Now go to the edit menu and choose Insert Trim with Range Ctrl T and you will see that the range you selected has been inserted into your script at the current cursor position as a Trim command. The Edit menu contains lots of handy things like this. Of course, you need to make sure the current cursor position is where you want the function to be pasted. Other useful things in the Edit menu are: Insert position Ctrl P will type the number of the current frame you are viewing into your script.

Script Handling will allow you to choose what kind of things should be highlighted. By default avisynth function highlighting is selected but there is also an option specifically for getting Decomb options working Telecide and Decimate.

As you can see this all makes avisynth use much much easier. If you choose the Help menu you can click the option to see a description of what this can do. Exporting Video This is the easy part. When you have your source looking the way it should be, your video options set and your audio streams set you are ready to export a video. To do this, all you have to do is go to the File menu, choose Save As In VirtualDubMod save options there are a few things to note which are not present in the traditional VirtualDub.

The others are advanced containers that we will talk about later so until you know more about them save everything as AVI as usual. In VirtualDubMod there is also small section at the bottom of the Save As window which allows you to change the Video processing mode in case you have set it incorrectly and you can also check which compressor is being used if you are compressing. One final option which has never been talked about in previous guides is Job Control. You can then set up more exports and add them to Job Control so you can run them all in one go later.

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You will need: 1. VirtualDubMod newest version always of course 2. AviSynth 2. Convolution3D for AviSynth 2.

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Kazisho The following script contains MT modes for various plugins, save it as mtmodes. If this test fails or your computer locks up make sure that your computer is not overclocked and lower your bus speed of your processor in steps of say five MHz till the crashes are gone. FFmpegSource You should also note that setting this parameter incorrectly will cause all file openings to fail unless your filenames are exclusively 7-bit ASCII compatible. Basically, AviSynth works like this: Autoloading happens if the first unknown function is looked up. Which means you can use the same modes that you have used with AviSynth-MT. Help filling MT modes The following script contains MT modes for various plugins, save it as mtmodes.

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CalcItSynth does have its own limited capability to take the script and generate compressed output using ffmpeg. This is where CalcItSynth is vulnerable to the vagaries of the particular flavour of generic ffmpeg. Move to the third tabbed page [69]. If a final AviSynth script has just been generated, it will already be chosen by default. The script need not be located in the source video folder itself, but it must contain valid paths to its own source video files.

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AviSynth is a powerful tool for video post-production. It provides ways of editing and processing videos. AviSynth works as a frameserver , providing instant editing without the need for temporary files. AviSynth itself does not provide a graphical user interface GUI , but instead relies on a script system that allows advanced non-linear editing. While this may at first seem tedious and unintuitive, it is remarkably powerful and is a very good way to manage projects in a precise, consistent, and reproducible manner. Because text-based scripts are human readable, projects are inherently self-documenting.

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