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October 14th, 2005, 09:01 AM | #1 |
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Another Premiere pro question...
I have just exported a short 10 minute clip/film out of Premiere so I can author it into a DVD and its in the windows media player AVI file.
Almost all of the onboard camera sound is removed as it was about cars at a show etc and music put on the audio 2 track to run through the length of the clip with about 3 minutes on onboard audio, at these parts on Premiere it runs fine but when I play it back on the media player it cracks and hisses (the exported clip) I thought it might have been my own computer speakers so brned it to dvd but it does the same thing, has anyone got some idea of whats wrong? Many thanks Paul |
October 14th, 2005, 09:32 AM | #2 |
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This can be caused by volume leves that are too high. In Premiere Pro, open the Audio Mixer if it is not already open (Window>Audio Mixer), and play back your project. If the audio level goes above 0 db, then reduce the volume. In fact, it would probably be a good idea to make sure there are no audio peaks above -12 db. I know that my Samsung DVD player (or perhaps the sound sound system, I'm not sure which) had a problem with audio levels approaching 0 db on DVDs. Now I master my DVDs with sound levels no higher than -12 db, and I've had no more problems.
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October 14th, 2005, 09:55 AM | #3 |
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Thank you Christopher,
I'll give that ago. The sounds are very high on that clip as its a car revving up. I'll let you know what happens and thanks again for your help. Paul |
October 14th, 2005, 11:18 AM | #4 |
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Your right it peaking out at the very red, do you reduce the master to -12 or that seperate audio track, and do you do this all on the audio mixer?
Paul |
October 14th, 2005, 12:21 PM | #5 |
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When I mix audio in Premiere Pro, I reduce the volume on individual clips to just under 0 db should they peak over 0 db. Once that is done, before I export the file for DVD I reduce the Master channel in the Audio Mixer by -12 db.
Here is how to reduce the volume on an individual clip in the Timeline window (from the Premiere Pro help file). To edit a clip or track's audio levels in the Timeline window: 1. In the Timeline window, expand a track's view, if necessary, by clicking the expansion triangle next to the track name. 2. Click the Show Keyframes button Show Keyframes button , and choose Show Clip Volume or Show Track Volume from the menu that appears. 3. Use the pen tool to adjust the level uniformly (if keyframes have not been added) or to add or edit keyframes. |
October 14th, 2005, 02:43 PM | #6 | |
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if you recorded the motor sound with the agc off, you could have over-driven the recorded sound past 0 db, which would have ruined it... but that would have explained why it's too loud. the goal is to have the audio set correctly before anything is exported... i try to use the digital audio meters on my mackie mixer, but ultimately i think that you want a quality set of powered vu meters... it's probably a good idea to never depend on the editing software to set audio levels, and of course never try to match audio levels strictly by ear alone. |
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October 14th, 2005, 04:43 PM | #7 | |
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October 14th, 2005, 04:50 PM | #8 | |
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Every dvd I have created has never required such drastic intervention. All (most) have all flavours of audio from band to voice, music tracks and ambient / shop floor all peaking to within -.05 db. Don't your clients mention that they have to way turn up the volume to listen to your work? |
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October 14th, 2005, 09:30 PM | #9 | ||
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The reason I reduced by -12 db (and not something like -6 db) was something I had read on the Adobe User to User forums recommended -12 db. Last edited by Christopher Lefchik; October 14th, 2005 at 10:25 PM. |
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October 14th, 2005, 10:01 PM | #10 |
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I did a quick search on the Adobe Premiere Pro User to User forum on the subject. Read the two threads linked below for an explanation. Pay special attention to the last post on the second thread. This is more complicated than I thought; my head is starting to hurt...
http://www.adobeforums.com/cgi-bin/w...36@.2cceddd9/0 http://www.adobeforums.com/cgi-bin/w...2050@.2ccd6c5c Short story: The correct audio input and output level depends on your source and destination, plus the peak level Premiere Pro expects. You have no control over the level the audio comes in (if you are using IEEE 1394), but you do have control over the output. But again, you must know what level your source treats as peak, and what your destination media treats as peak. This a subject every Premiere Pro user (and every prosumer/pro NLE user, for that matter) should be aware of. (Oh, and by the way, Premiere Pro's audio reference tone is at -12 db.) Read the threads linked above. This is important! |
October 15th, 2005, 08:47 AM | #11 |
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Thanks for your help Christopher,
I'll try this out and let you know how it sounds. Paul |
October 16th, 2005, 07:44 AM | #12 |
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Thanks again Christopher,
That worked a treat. Paul |
October 16th, 2005, 08:55 AM | #13 | |
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this appears to be an issue with premiere. |
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October 16th, 2005, 01:07 PM | #14 | |
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October 16th, 2005, 01:24 PM | #15 | |
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Problem number one could have been avoided in the first place had video equipment manufacturers standardized on a single audio reference level. Problems two and three are clearly Adobe's fault, though number two would never have arisen had problem one been avoided. If your video equipment and workflow happens to be compatible with Premiere Pro's audio reference level, you may never see any audio issues. I wonder how other editing software handles audio reference levels? While an important issue, this seems to be a rare subject. 0 db is thrown around as the "official" level, but this is evidently not the case when it comes to video equipment. Please, read the threads from the Adobe forum before commenting. Last edited by Christopher Lefchik; October 16th, 2005 at 01:58 PM. |
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