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Old 12th May 2007, 12:47   #1  |  Link
Ignus2
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audio cutting

Trim() refuses to cut audio-only clips.
Is there a plugin, which can cut audio, either sample based or frame based, if given fps?
(Or preferably both? )

--
Greets,
I.

Last edited by Ignus2; 12th May 2007 at 12:53.
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Old 12th May 2007, 13:30   #2  |  Link
~bT~
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try the avs cutter in megui.
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Old 12th May 2007, 13:42   #3  |  Link
wonkey_monkey
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Couldn't you just use blankclip and audiodub to attach video to the clips, and then trim them? You can then use audiodub again to attach the audio to a different video, or getchannels to return an audio-only clip, I think.

David
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Old 12th May 2007, 21:50   #4  |  Link
Ignus2
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Quote:
Originally Posted by davidhorman View Post
Couldn't you just use blankclip and audiodub to attach video to the clips, and then trim them?
And how do I know the length of BlankClip to create?
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Old 12th May 2007, 22:51   #5  |  Link
wonkey_monkey
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AudioLength(clip) will return the number of samples:

Code:
a=wavsource("...")
audiodub(blankclip(audiolength(a)),a)
David
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Old 12th May 2007, 23:40   #6  |  Link
Ebobtron
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Hello,
At 41000 or 48000 samples per secound we have a whole lot of video frames being made. Not that there is anything wrong with that. Too many video frames will just be that, should not cause anything more than confusion.

if you would like the two to match a little closer try something like.
Code:
a=wavsource("...")
audiodub(blankclip((audiolength(a)/Audiorate(a))*yourfps),a)

audiolength(a)/Audiorate(a) = nSeconds of audio
http://avsfilmcutter.com
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Old 12th May 2007, 23:56   #7  |  Link
Ebobtron
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sorry try this

Code:
a=wavsource("...")
audiodub(blankclip(length=int((audiolength(a)/audiorate(a))*yourfps),fps=yourfps),a)

audiolength(a)/Audiorate(a) = nSeconds of audio
This works, I tried it.
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Old 13th May 2007, 00:32   #8  |  Link
IanB
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Code:
Function AudioTrim(clip aclip, int start, int end, float "fps") {
  rate = Default(fps, 25.0) # or 23.976, 29.97
  end = (end != 0) ? end : Round(AudioLengthF(aclip) * rate / Audiorate(aclip))
  BlankClip(length=end, fps=rate)
  AudioDub(aclip)
  Trim(start, end)
  KillVideo() # 2.5.7 feature
  return last
}

Last edited by IanB; 14th May 2007 at 11:28. Reason: AudioLenghtF -> AudioLengthF
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Old 13th May 2007, 19:18   #9  |  Link
stickboy
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Quote:
Originally Posted by IanB View Post
Code:
  end = (end != 0) ? end : Round(AudioLenghtF(aclip) * rate / Audiorate(aclip))
Typo there. Should be AudioLengthF.
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Old 14th May 2007, 11:30   #10  |  Link
IanB
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Oops! Ta! Fixed!
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Old 21st May 2007, 00:19   #11  |  Link
Ignus2
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Good, it seems the only thing, that made this thread surface was the fact, that I didn't know about the existence of AudioLength(), AudioRate() and the like

(For others seeking this information, like me, it's documented here: http://avisynth.org/mediawiki/Clip_properties)

Thanks.

--
Greets,
I.
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Old 1st August 2007, 22:14   #12  |  Link
Space Hopper
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Quote:
Originally Posted by IanB View Post
Code:
Function AudioTrim(clip aclip, int start, int end, float "fps") {
  rate = Default(fps, 25.0) # or 23.976, 29.97
  end = (end != 0) ? end : Round(AudioLengthF(aclip) * rate / Audiorate(aclip))
  BlankClip(length=end, fps=rate)
  AudioDub(aclip)
  Trim(start, end)
  KillVideo() # 2.5.7 feature
  return last
}
Thanks, that worked great!
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