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#1 |
Regular Crew
Join Date: May 2004
Location: FL.
Posts: 71
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Vegas Audio Problems...?
I'm sure there's a perfectly reasonable and logical explanation to the problem I'm having so I'm doing what I should have done earlier (posting it here) instead of spending the better part of this morning pulling out my hair.
I'm using Vegas 5 and a have a nearly 30 minute audio that I want to render as a CD quality (128 kbps, 44,100 hz) mp3. The problem is when I use that setting it renders but I can not hear anything when I try to play it. The same thing happens with the 96 Kbps,44,100 hz setting but I can hear the playback if I use the 80 Kbps,22,050 hz or 64 Kbps, 22,050 settngs. Any ideas on what the problem could be? |
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#3 |
Regular Crew
Join Date: May 2004
Location: FL.
Posts: 71
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Greg
That might be true but I can hear the audio from a "store" bought cd. Are all store bought cds mastered using the same 128 Kbps 44,100 hz settings or do they vary? |
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#4 |
Inner Circle
Join Date: Sep 2003
Location: Portland, Oregon
Posts: 3,420
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"128Kbps, 44.1KHz" may indeed be called "cd-quality" by many MP3 encoders, but it is not the CD standard, it is an MP3 compression standard. "128" refers to a bitrate.
The actual CD-Audio standard is 16bit (wordlength) 44.1KHz (sample rate), uncompressed. And no, it doesn't vary. Greg may be right - something with sound card support (there may be driver updates), or with the MP3 player software you're using (try other software, you probably have 2 or 3 programs that will handle it, eg. WM Player, QT, WM Classic, Vegas, Sound Forge, many DVD sw players, Winamp, etc.) |
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#5 | |
Inner Circle
Join Date: May 2006
Location: Camas, WA, USA
Posts: 5,513
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Quote:
All told, a CDs datarate is 16 x 44,100, x 2 = 1.4112 mbps, or (dividing by 8) 176.4 kB/s. http://en.wikipedia.org/wiki/Red_Boo...io_CD_standard) http://en.wikipedia.org/wiki/CD-ROM
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Jon Fairhurst |
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#6 |
Inner Circle
Join Date: Sep 2003
Location: Portland, Oregon
Posts: 3,420
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Thanks for the clarification, Jon, quite so. Always good to have the complete info, wouldn't want someone to be misinformed.
To highlight against the compression of 128Kbps Kevin used, CD-standard is a datarate of ~1411Kbps (what Jon said...). In other words, the 128K MP3 compression throws away about 90% of the data. Which is great if you're trying to fit a few hundred songs in a couple GB of storage on an MP3 player, or will distribute over the internet, but not so good for most other things. Kevin, let us know how the troubleshooting goes. |
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