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Audio Synch Problems AVISynth to Virtualdub - VideoHelp
https://forum.videohelp.com/threads/339039-Audio-Synch-Problems-AVISynth-to-Virtualdub
The AVI files are Huffyuv with no audio synch issues. Audio = 48k 16bit. When I string the files together in my AVS file and render them back to Huffyuv through Virtualdub the audio falls terribly out of synch by the end of the avi. It starts out in synch then by about the middle of say a 12min video it falls out of synch by a good half second ...
Audio Sync for MP3 and AAC files in AVISynth - Doom9's …
https://forum.doom9.org/showthread.php?t=156200
Audio Sync for MP3 and AAC files in AVISynth. I want to test the sync of decoding mp3 and aac audio sources. I will be using the WAVSource, AVISource, DirectShowSource, NicMPG123Source, bassAudioSource and FFAudioSource API calls when I can. What I found is that when decoding mp3 files, use NicAudio if possible, and DirectShow might work also.
AssumeSampleRate - Avisynth wiki
http://avisynth.nl/index.php/AssumeSampleRate
Fix an audio sync problem: AviSource("video_audio.avi")# Let's say that this clip loses audio sync:# by the end, the audio is behind by 200 milliseconds. Ar = AudioRate# original audio sample ratedur = AudioDuration# total duration in secondsadj = -0.200 # correction needed (decrease audio duration by 200 msec)# Adjust audio duration:AssumeSampleRate(Round(dur / …
DirectShowSource - Avisynth wiki
http://avisynth.nl/index.php/DirectShowSource
Troubleshooting video and audio problems AviSynth will by default try to open only the media it can open without any problems. If one component cannot be opened it will simply not be added to the output. This will also mean that if there is a problem, you will not see the error.
DelayAudio - Avisynth wiki
http://avisynth.nl/index.php/DelayAudio
From Avisynth wiki. Jump to: navigation, search. DelayAudio (clip, float seconds) DelayAudio delays the audio track by seconds seconds. seconds can be negative and/or have a fractional part. Example: # plays audio half a second earlier DelayAudio (-0.5) PS: if audio loaded from separate file (for example WavSource ), it's better do negative delay after AudioDub this clip, or …
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