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ConvertAudio - Avisynth wiki
http://avisynth.nl/index.php/ConvertAudio
Convert the audio sample type to 8, 16, 24 and 32 integer bits, respectively. ConvertAudioToFloat(clip clip) Convert the audio sample type to 32-bit Float. The sample types supported by the AviSynth audio filters are listed here, in the Sample type column. If a filter doesn't support the type of sample it is given, it will either throw an error or automatically …
Convert - Avisynth wiki
http://avisynth.nl/index.php/Convert
There is no unique way of converting YUV to RGB or vice-versa. There are different conversion matrices in use; the two most common ones are available in AviSynth, namely Rec.601 and Rec.709, plus some others. The following should be correct in most cases (see here for more)
Main Page - Avisynth
What is AviSynth? 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.
how to extract audio from avi via avisynth - VideoHelp Forum
https://forum.videohelp.com/threads/380925-how-to-extract-audio-from-avi-via-avisynth
You can't really "extract" audio through avisynth, because it frameserves uncompressed audio and video. So you would be decompressing the original audio, then re-encoding it with something else, unless you planned to keep uncompressed audio
Avisynth AC3 Support - VideoHelp Forum
https://forum.videohelp.com/threads/186647-Avisynth-AC3-Support
I believe I am correct in stating that, no, there is no way for AviSynth to correct decode 6-channel AC3 audio. The AC3Source filter definitely won't do it. You can use BeSweet to convert your Ac3 into six separate mono waves, changing the framerate at the same time. I use the command line:
How to bring MP4 files into an AviSynth script « 720p ...
https://compactvideo.wordpress.com/2012/02/01/how-to-bring-mp4-files-into-an-avisynth-script/
Copy the text below, paste it into Notepad and save it as AVStoMP4.bat. for %%a in ("*.avs") do ffmpeg -i "%%a" -vcodec libx264 -preset medium -crf 19 "%%~na.mp4". pause. Put your AviSynth script AVS file, its associated MP4 source files and AVStoMP4.bat all in the same folder.
Download AviSynth v2.6.0 (open source) - AfterDawn ...
https://www.afterdawn.com/software/audio_video/video_tools/avisynth.cfm
AviSynth is an extremely powerful frameserver for Windows that allows using VirtualDub and TMPGEnc plugins as well as tons of its own plugins to be added to the frameserving process. AviSynth even beats its "big brother", VirtualDub, in terms of flexibility when speaking of frameserving. Possible uses of frameserving are endless -- cropping, resizing, …
BeHappy - AviSynth based audio transcoding tool (UPD …
https://forum.doom9.org/archive/index.php/t-104686-p-3.html
From AviSynth docs: "Starting from v2.5 the audio samples will be automatically converted if any filters requires a special type of sample. This means that most filters will accept several types of input, but if a filter doesn't support the type of sample it is given, it will automatically convert the samples to something it supports."
Download AviScript 2.9 - Softpedia
https://www.softpedia.com/get/Multimedia/Video/Other-VIDEO-Tools/AviScript.shtml
AviScript is a smart and powerful tool that will convert Video and DVD-Rips to AviSynth script files and also convert any audio formats. AviScript can Cut, Edit, Filter and is very useful for VCD ...
Using AviSynth 2.5 (page 13/15): Changing Framerate ...
https://www.afterdawn.com/guides/archive/using_avisynth_page_13.cfm
ConvertFPS changes the framerate of your clip by adding or removing frames as necessary. Playback speed is unaffected so audio isn't changed at all, and audio sync shouldn't be altered at all. New frames are created by blending two adjacent existing frames together. ConvertFPS doesn't take interlacing into account.
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