Jump to content
  • 0
MichaelGraubart

Burning large files to CD

Question

I have a set of 23 AAIF tracks, whose total duration is 86 minutes and whose total size is 1.37 GB, which I want to burn to a CD. I have some 90 minute, 800 MB, recordable CDs. As far as duration is concerned, my recordings will fit onto one of these disks.

My question is: will Toast 16 reduce the total file size during the burning to fit the disc’s capacity of 800 MB, or should I first convert the AIFF files to more compressed ones such as mp3s?

Thank you in anticipation of advice.

Share this post


Link to post
Share on other sites

2 answers to this question

Recommended Posts

  • 0

Audio CDs are written differently to disc compared to Data CDs, and that gives a information density advantage (2352 bytes/sector vs. 2048 bytes/sector), meaning 86 minutes of 44.1 kHz 16-bit stereo PCM audio take up 910 MB on your hard disk, but that is comparable to the same amount of CD-R sectors as 793 MB of data, hence fitting on 800 MiB discs.

If your audio files total more than that 910 MB (868 MiB), then perhaps some of those files are not 44.1 kHz 16-bit stereo. Toast, and most Audio-CD burning apps, will convert audio to that specification. There is no need for intermediate conversions. Standard Audio CDs are always uncompressed. (Some players may be able to play compressed files from a data CD, though.)

You should trust the “90 mins” for the disc as really having (close to) that capacity for Audio CD. However, 90 minute CD-R is non-standard, and Toast may or may not be able to use its full capacity: it may register as lesser duration and I think Toast has no ‘overburn’ capability (write data beyond registered limit).

Edited by theoldarchiver
  • Like 1

Share this post


Link to post
Share on other sites
  • 0

Thanks very much, theoldarchiver. That is just the information I wanted.

I tried burning the 23 tracks to a 90-min disk with Toast, but Toast insisted on wanting to split them between two disks despite the CD-R being a 90-minute one, so I used Express Burn instead. That created a CD with all 23 tracks on it, which played perfectly well in iTunes and in VLC on my Mac. In my (ancient) CD player, it played continuously, but — though all 23 tracks were displayed — I was not able to select particular tracks to play. I have not had a chance yet of trying it in another, more modern, CD player.

 

Thanks again.

Share this post


Link to post
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now

×