Audio Tracks are popping at DVinfo.net

Kevin Ta · October 7th, 2009, 03:32 PM

I'm messing around with music tracks into the sequence. The sound for my b-roll sounds fine, i just lowered the levels a bit.

I added some music to the sequence and discovered that you have to render or else a beep will be heard in the background instead of the music.

So i rendered the sequence, and then the music track plays, but it is making a popping/skipping noise similar to a scratched CD when i play through the sequence.

If i listen to the track from my bin, it sounds fine, only when it's in the sequence does it make this noise. Any thoughts to what may be causing this? Thank You!

Mitchell Lewis · October 7th, 2009, 03:35 PM

Did you check the levels using the audio level meters? Do you seen the red clipping indicator lights flashing?

BTW, if you use Quicktime Pro to open your music tracks and then File>Export them as Linear PCM 16-bit, 48 khz, they will drop right in without rendering. It normally takes less than a minute to convert them. (I love Quicktime Pro)

Kevin Ta · October 7th, 2009, 04:00 PM

yes, all the levels are below -12db. nothing is peaking at all. odd thing is that it only happens when i play it from the timeline, but the actual song itself doesn't pop.

Andy Mees · October 8th, 2009, 06:33 AM

Sounds like you might be trying to use an MP3 or other incompatible audio variant in your timeline, could that be the case? If that is the case then you really should transcode, as advised above, before importing and using the transcoded version in your timeline.

Best
Andy

Olof Ekbergh · October 8th, 2009, 11:24 AM

I dont know what you are using to monitor, just Mac, or AJA, Matrox etc.

A few times I have had similar issues with AJA cards. Restart zap the P-ram (command-option-P-R on startup let mac ding 4 times then let go), and of course trashing your FCP prefs works in a lot of cases like this.

Kevin Ta · October 8th, 2009, 12:22 PM

I'll see what i can do by transcoding the audio.

I'm only monitoring the audio through the Mac itself as well, no AJA, etc. I'll give it a go resetting my preferences as well. Thanks!

October 7th, 2009, 03:32 PM	#1
Kevin Ta Regular Crew Join Date: Mar 2008 Location: San Francisco, CA Posts: 55	Audio Tracks are popping I'm messing around with music tracks into the sequence. The sound for my b-roll sounds fine, i just lowered the levels a bit. I added some music to the sequence and discovered that you have to render or else a beep will be heard in the background instead of the music. So i rendered the sequence, and then the music track plays, but it is making a popping/skipping noise similar to a scratched CD when i play through the sequence. If i listen to the track from my bin, it sounds fine, only when it's in the sequence does it make this noise. Any thoughts to what may be causing this? Thank You! __________________ Kevin Ta

October 7th, 2009, 03:35 PM	#2
Mitchell Lewis Trustee Join Date: Dec 2008 Location: Kennewick, WA Posts: 1,124	Did you check the levels using the audio level meters? Do you seen the red clipping indicator lights flashing? BTW, if you use Quicktime Pro to open your music tracks and then File>Export them as Linear PCM 16-bit, 48 khz, they will drop right in without rendering. It normally takes less than a minute to convert them. (I love Quicktime Pro) __________________ Sony EX3, Canon 5D MkII, Chrosziel Matte Box, Sachtler tripod, Steadicam Flyer, Mac Pro, Apple/Adobe software - 20 years as a local videographer/editor

October 7th, 2009, 04:00 PM	#3
Kevin Ta Regular Crew Join Date: Mar 2008 Location: San Francisco, CA Posts: 55	yes, all the levels are below -12db. nothing is peaking at all. odd thing is that it only happens when i play it from the timeline, but the actual song itself doesn't pop. __________________ Kevin Ta

October 8th, 2009, 12:22 PM	#6
Kevin Ta Regular Crew Join Date: Mar 2008 Location: San Francisco, CA Posts: 55	I'll see what i can do by transcoding the audio. I'm only monitoring the audio through the Mac itself as well, no AJA, etc. I'll give it a go resetting my preferences as well. Thanks! __________________ Kevin Ta

October 8th, 2009, 06:33 AM	#4
Andy Mees Major Player Join Date: Mar 2006 Location: Kuala Lumpur, Malaysia Posts: 645	Sounds like you might be trying to use an MP3 or other incompatible audio variant in your timeline, could that be the case? If that is the case then you really should transcode, as advised above, before importing and using the transcoded version in your timeline. Best Andy

October 8th, 2009, 11:24 AM	#5
Olof Ekbergh Sponsor: Westside AV Join Date: Dec 2008 Location: Mount Washington Valley, NH, USA Posts: 1,365	I dont know what you are using to monitor, just Mac, or AJA, Matrox etc. A few times I have had similar issues with AJA cards. Restart zap the P-ram (command-option-P-R on startup let mac ding 4 times then let go), and of course trashing your FCP prefs works in a lot of cases like this.