[FFmpeg-user] Why is concat so slow on a powerful machine?

Erik Dobberkau erik.dobberkau at gmail.com
Thu Oct 26 14:26:23 EEST 2017

> Back on-topic, Kevin; if you cannot even copy a file from one directory to
> another at reasonable / expected speed; I too would recommend checking your
> hardware, and
> any likely bits of software- eg do you have some aggressive antivirus
> intercepting / "quarantining" all disk writes?

have you excluded the folder being written to from Windows Defender's
surveillance or 3rd party software Rob has mentioned? This can massively
impact writing speed.

Best regards,

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