Very reliable recording

[rec]

What happens when writing is interrupted on a compressed file format by a crash (i.e. sounddevice or soundfile crashes in C code, both of which have been known to happen...)

Hard to test!

One solution is this:

• Write uncompressed (e.g. wav)
• Recovery is easy
• When a new file is written, a job is spun off to convert it to the compressed format (perhaps with ffmpeg?)
• A top-level job runs and spawns off separate processes to do the recording, recovery and compression
• The top-level job can restart the recording job if it fails