From owner-freebsd-questions@freebsd.org Wed Dec 13 14:16:41 2017 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id AA21FE9FB44; Wed, 13 Dec 2017 14:16:41 +0000 (UTC) (envelope-from vas@mpeks.tomsk.su) Received: from relay2.tomsk.ru (mail.sibptus.tomsk.ru [212.73.124.5]) by mx1.freebsd.org (Postfix) with ESMTP id D6BDA7276D; Wed, 13 Dec 2017 14:16:39 +0000 (UTC) (envelope-from vas@mpeks.tomsk.su) X-Virus-Scanned: by clamd daemon 0.98.5_1 for FreeBSD at relay2.tomsk.ru Received: from [212.73.125.240] (HELO admin.sibptus.transneft.ru) by relay2.tomsk.ru (CommuniGate Pro SMTP 5.1.16) with ESMTPS id 39890376; Wed, 13 Dec 2017 20:11:51 +0600 Received: from admin.sibptus.transneft.ru (sudakov@localhost [127.0.0.1]) by admin.sibptus.transneft.ru (8.15.2/8.15.2) with ESMTP id vBDEGZHf006929; Wed, 13 Dec 2017 21:16:37 +0700 (+07) (envelope-from vas@mpeks.tomsk.su) Received: (from sudakov@localhost) by admin.sibptus.transneft.ru (8.15.2/8.15.2/Submit) id vBDEGWt4006926; Wed, 13 Dec 2017 21:16:32 +0700 (+07) (envelope-from vas@mpeks.tomsk.su) X-Authentication-Warning: admin.sibptus.transneft.ru: sudakov set sender to vas@mpeks.tomsk.su using -f Date: Wed, 13 Dec 2017 21:16:32 +0700 From: Victor Sudakov To: "Onno K." Cc: Freebsd-multimedia@freebsd.org, freebsd-questions@freebsd.org Subject: Re: How to capture audio with FreeBSD? Message-ID: <20171213141631.GD6560@admin.sibptus.transneft.ru> References: <20171213135656.GB6560@admin.sibptus.transneft.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: AO "Svyaztransneft", SibPTUS X-PGP-Key: http://www.dreamwidth.org/pubkey?user=victor_sudakov X-PGP-Fingerprint: 10E3 1171 1273 E007 C2E9 3532 0DA4 F259 9B5E C634 User-Agent: Mutt/1.9.1 (2017-09-22) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Dec 2017 14:16:41 -0000 Onno K. wrote: > > Since when is it not possible to record with > > "cat /dev/dsp > file.wav" like in old hardcore Unixes? > > > I have tried this, but the resulting file.wav is only 0 bytes after > several seconds. So this does not appear to work either. Control-T > reveals the process is stuck in 'pcmrdv' state. So I wonder when it got broken. > > I am also curious how it works with multiple input devices; does BSD > know what device to point to when accessing /dev/dsp? > AFAIK /dev/dsp is the default device according to sysctl hw.snd.default_unit, but you can always use /dev/dsp0, /dev/dsp1 etc. -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN AS43859