Logic pro x stops recording after 1 hour

What file type are you recording to? AIFF or WAV? What bitdepth (16 or 24) and what samplefrequency (44k1, 48k, 88k2, 96k, 176k4, 192k). Try CAF (CAF has no file size limit, AIFF and WAV are limited to 2 and 4 GB respectively).

Hi

Eriksimon wrote:

AIFF and WAV are limited to 2 and 4 GB respectively).

Since LPX v 10.2.1, there has been support for RF64 wav files which removes the 4GB limit

CCT

You're welcome. 🙂

If you don't mind me asking, why are you recording at such a redundantly high resolution? Pro people I know will often work at 44.1 or 48, and only if the quality demands are more than high, they'll use 96 k (or 88.2) - but never 192k. Also, the clock may be inaccurate (for certain audiointerfaces) at those high resolutions to such an extent that 192k recordings can be of lower quality than 96, 88.2, 48 or 44.1 kHz, which does more than negate the use of it - plus the 2- or 4-fold bigger files, ahnd therefore a 2- or 4 fold higher strain on the CPU when mixing.

Apogee interfaces are considered top end. I would not expect any of them to have this "issue".

I'm putting it in quotemarks because I am pretty sure of two things: in a blind test even consummate professionals can not tell the difference between recordings at 96 or 192 kHz, and even the difference between 48 and 192 will will evade 9 out of 10 trained listeners. This clock "issue" can only be detected by tools and perhaps by ear by very experienced audio engineers.

If I had your setup, I would probably go for 96 kHz (also because it is the HD audio standard, 24/96 kHz), and only downsample a (copy of the) session (to 48 kHz) if it overloads the CPU.

You could try mixing the same session at 96 kHz, and a duplicate at 48 kHz with downsampled copies of the audio. Make sure the mixes are identical, bounce both sessions so their identical, then A/B/X test them.

https://headfonics.com/2018/01/seven-keystones-accurate-audio-blind-testing/

I'm afraid that is beyond my expertise - you'd have to ask people like mastering engineer Holger Lagerfeldt on LPH or gearslutz.

Those clock anomalies are known as jitter. Again, I think Apogee will be more than fine in that respect.

But I did find this piece by Ian Shepherd, explaining why it might be counterproductive to go for a high samplefrequency with any interface:
http://productionadvice.co.uk/high-sample-rates-make-your-music-sound-worse/