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Audio filter reference - VirtualDub Documentation
https://documentation.help/VirtualDub/audio-filters.html
If you combine pitch shift with stretch and use the same ratios for both, you get a time stretcher, which alters the speed of audio without changing its pitch. ratty pitch shift. Modify the pitch of audio without changing speed (old algorithm). Ratty pitch shift works by stretching or contracting its input, slicing it into small sections, and ...
Can VirtualDub correct audio drift? - VideoHelp Forum
https://forum.videohelp.com/threads/311740-Can-VirtualDub-correct-audio-drift
The method you used can only shift the full audio track forward or backward. It doesn't change the length of the audio. There is a way of syncing audio and video with different lengths in VirtualDub. You just change the frame rate of the video to slow it down or speed it up. Then use Direct Stream Copy mode for video and audio.
Processing: Audio display - VirtualDub Documentation
https://documentation.help/VirtualDub/p-audiodisplay.html
Shifting audio You can also shift the audio track back and forth from the audio display to fix audio sync errors. Identify a portion of the video clip where both the video frame and the audio waveform/spectrogram are distinctive. Hold down the Control key and click with the left mouse button on a portion of audio.
Audio pitch issues with Virtualdub - Speed Demos Archive
https://forum.speeddemosarchive.com/post/audio_pitch_issues_with_virtualdub.html
It seems that every time I use VirtualDub to record video from my Dazzle, the audio's pitch shifts randomly. There's no desync between video and audio, and as far as I can tell, neither the video nor the audio is speeding up or slowing down. The game audio just shifts up or down in pitch at seemingly random intervals.
Pitch shifting - virtualdub.org
https://virtualdub.org/blog2/entry_045.html
In VirtualDub, you can do this by combining the "ratty pitch shift" with the "stretch" filter, and give both the same factors. You can then speed up or slow down a video by changing the video frame rate to match. One use for this is correcting for the ~4% speed error when converting between 23.976 fps (FILM) and 25 fps (PAL).
VirtualDub2
http://www.virtualdub2.com/
An enhanced version of the original VirtualDub with improved usability, and extended to work with new formats and plugins. A streamlined video editor with simple frame-by-frame timeline. Free, open-source, portable. The default package is ready for use with many essential plugins included, and can be further extended with 3rd party codecs and filters.
Filtering VHS recordings in Virtualdub - engon
https://www.engon.de/audio/vhs4_en.htm
Smoth shift field generates interpolated intermediate images from odd and even frames doubles frame rate. Deinterlace 'Muksun' ... If you had an delay between video and audio, and you have corrected the audio track, you must instruct Virtualdub to use this corrected track instead of the audio track that is in stored in movie file:
Welcome to virtualdub.org! - virtualdub.org
VirtualDub is mainly geared toward processing AVI files, although it can read (not write) MPEG-1 and also handle sets of BMP images. I basically started VirtualDub in college to do some quick capture-and-encoding that I wanted done; from there it's basically grown into a more general utility that can trim and clean up video before exporting to ...
Capturing with VirtualDub [Settings Guide] - digitalFAQ Forum
http://www.digitalfaq.com/forum/video-capture/7427-capturing-virtualdub-settings.html
VirtualDub Help has more details on many of these items. These options set up the way VirtualDub matches video to audio during a capture. Video frames can stream in from the video capture with irregular timestamps due to timing inaccuracies and interference with system background tasks. Bad timing can also come from the source video or the player.
VirtualDubMod - What it is and how to use it
https://www.animemusicvideos.org/guides/avtech/amvappvdubmod.html
This allows you to use ACM audio compression codecs. The only one you will even want to consider is 'Lame MP3' - this will be covered later when we look at audio compression. Use advanced filtering - virtualdub now has options to do interesting things with audio such as Pitch shift, Gain, Chorus effects and so on. It's unlikely you will use ...
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