Audio Popping and crackling

D

darkspark7

Member
Ok, heres the problem. I can do everything in Poremiere Pro perfectly fine. anyways to the problem. All my movies are in .avi files. So when they are in adobe, whenever i play them, in any window, the audio will crack and pop when something loud like a crash or scream. I've already tried audio mixing and lowering the master level. But that still doesnt do it for me. So i was wondering if any of you guys hadn any idea or solutions. any help would be great.

thanks.
 
If you have access to a program like Audition, you could do an audio extraction and verify if the problem is present in the .avi. If the file(s) appear fine, then I would suggest blowing up the conformed audio files (.cfa) and let Premier rebuild them the next time you start the application.
 
ok, but i dont know how to "blow" my audio up. And using audition is a good idea. but yea i'd need an explanation for the blowing up of the audio.
 
Just find the folder where the conformed audio files are located (.cfa) and move it or delete it. Then the next time you open up this project, Premier will recreate them.
 
darkspark7 said:
ok, but i dont know how to "blow" my audio up. And using audition is a good idea. but yea i'd need an explanation for the blowing up of the audio.
Click to expand...
darkspark7, do the following:

1. Launch Audition
2. Click on the Multi Track View tab
3. Go to Insert > Audio From Video
4. Find your .avi file and click Open

It will take some time, a couple of seconds, to extract the audio from the .avi. To edit the audio, click on the Edit View tab.

/Roger
 
Ok i did the adution thing and the audio is fine, there is no popping. and the deleting, the .cfa didnt work either.
now when i play the .avi clips just with like windows media player,realplayer, and quicktime the audio does not pop. so it's somthing in premiere.
 
darkspark7 said:
Ok i did the adution thing and the audio is fine, there is no popping. and the deleting, the .cfa didnt work either.
now when i play the .avi clips just with like windows media player,realplayer, and quicktime the audio does not pop. so it's somthing in premiere.
Click to expand...
Q1: Do you have a Matrox card, a RT.X10 or a RT.X100 and edit the video that pop in a Matrox Project?

Q2: Are the DV tape recorded in 12bit or 16bit audio?

/Roger
 
darkspark7 said:
Ok i did the adution thing and the audio is fine, there is no popping. and the deleting, the .cfa didnt work either.
now when i play the .avi clips just with like windows media player,realplayer, and quicktime the audio does not pop. so it's somthing in premiere.
Click to expand...

This could simply be that your project is complex enough that it is taxing the computer. A simple test would be to render the entire project as a new .avi, next open a new project and import the newly created .avi, don't apply any effects or edits, just play the file in Premier. If it plays well, then it is simply an issue of computing resources being inadequate to play a real time version.
 
Like Averdahl asked, are you editing via OHCI or a third party card like Matrox or Canopus? I'll get the crackling and popping in Premiere while editing with my Canopus DVStorm card when I try to play a clip anywhere outside of the timeline. I believe that is because, unlike OHCI, the Canopus board processes audio as well - so in this case there's a slight conflict between the PC's sound card and the third party video card. This is a unique problem to Premiere Pro as earlier versions did not exhibit it.

When I edit via OHCI I never get the crackling and popping.
 
the video card i have is an ATI 9800 Pro that i edit on. All the other video programs i use dont have the popping in it. I used FCP in school and the clips dont pop, and pinnacle wont pop either.
And for the video. im using a sony DVD camera that records in mpeg2 and im converting it to avi cause premiere wont work with mpegs unless i buy the codec. and im pretty sure the audio is 16-bit.
 
MPEG encoded audio does place an extra burden on Premier, are you certain that the audio in your converted .avi is native PCM and not a lossy coded format? Try the suggestion of outputting the file to an .avi and then importing that into a new Premier project. This will likely solve the problem and confirm the cause.
 
Ok well i found my old cop of premiere 6.5 and you were right, the audio doesnt pop in that version, so is there a way then to fix the problem between my sound card and the video card and computer?

oh and also, at this moment im drawing a blank on PCM so give me a refresher on how to do that please.
 
darkspark7 said:
...and im pretty sure the audio is 16-bit.
Click to expand...
The problem you describe indicates that the camera records the audio in 12bit. So make sure that the audio is recorded in 16bit.

/Roger
 
.. in PPRO you can save yourself the timeof rendering out a whole AVI by selecting all the audio clips.. just drag a box around them quick or use the multitool to select the whole tracks.. the go to clip -> audio -> render and replace this wil render the audio with all effects and keyframes and replace the old files with thenewly rendered files without any effects or anything applied since they have already been rendered to the new file. the audio should play smoothly then. I always do this before exporting a project just in case some effect is going to have some adverse affect on the audio on the render.
 
ok in the users manual of the camcorder, it says the camera records in 2ch Dolby Digital and the video records in NTSC color, EIA Standards video compression MPEG2. Another thing i was thining was maybe its the program im using to convert the MPEG2 to .AVI. Its Cyberlink PowerDirector 4, it came with my computer, and ii've just been importing the movies into there and then usuing the produce tool to make the avi.
Heres a link to the specs of the camera i have, maybe from you reading it get a better idea.

Sony DVD Camcorder DCR-DVD101

I'm also wondering if any of you have any good All around Converter programs, mainly for MPEG2 to .AVI or MPEG2 to .MOV
 
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