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Subject:Maximum Record Length
Posted by: VideJoe
Date:3/5/2008 1:39:00 PM
Hi, is there a maximum record length in Pro6? The recording stopped suddenly a little over 2 hours for no apparant reason. |
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Subject:RE: Maximum Record Length
Reply by: Chienworks
Date:3/5/2008 3:04:23 PM
If you're recording 24 bit 48KHz stereo then at 2 hours, 4 minutes, 16.54 seconds you would hit 2GB. This is the maximum size for a .wav file. Look under options for a setting to "save large files as W64". This will use Sony's 64 bit .wav extension format and allow you to record years worth of audio (or at least until you fill up your nice shiny new terabyte drive). |
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Subject:RE: Maximum Record Length
Reply by: VideJoe
Date:3/5/2008 9:24:08 PM
I record with 24/88.2 settings. The 2 hour file it created was much biggen than the maximum 2Gb, because I checked the setting you mentioned: "save large files as W64". Maybe a program crash? I will give it another try. B.t.w. Why is there a 2Gb file size limitation for WAV files, while there is none for AVI files? In know of file size limitation in the Windows 95/98 era, but not in the current XP/Vista period. Thanks, Dries. Message last edited on3/6/2008 1:15:53 AM byVideJoe. |
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Subject:RE: Maximum Record Length
Reply by: Chienworks
Date:3/6/2008 3:59:22 AM
Wav files use a signed 32 bit value in header to specify the length in bytes. 31 bits can specify a number up to 2G. AVI type 2 files use a different size value in the headers. AVI type 1 are limited to 1GB for similar reasons. |
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Subject:RE: Maximum Record Length
Reply by: MarkWWWW
Date:3/6/2008 6:58:45 AM
By my calculations a stereo file at 24/88.2 would hit 4GB at 2 hours and a few minutes. So I'd hazard a guess that the hard drive you are recording to is formatted as FAT32. FAT32 has a maximum file size of 4GB, so if you want to record stereo 24/88.2 files longer than a couple of hours you are going to need to use both (a) a hard drive formatted as NTFS, and (b) the .w64 file format. Mark |
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Subject:RE: Maximum Record Length
Reply by: VideJoe
Date:3/6/2008 8:58:27 AM
My hard drive is NTSF formatted. Thanks for the backgound info. |