From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5FB2B1A5B84; Sun, 1 Feb 2026 20:22:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769977326; cv=none; b=TAptXpO0ltQfefKp+Sewj42bfbJszPUZsWmojc0Fu78CPjaqczQJj8pH0NalhpB6zhlqxcPKDnKFOvGGYdhmhpil+DJdWL3IxHueMU4ZnVTxZZNAcjsKdvZQB1qCvCSXqty7hTbgGgf0xIRHvTD+1SrXpDYoK2k6t4i/eJ3khME= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769977326; c=relaxed/simple; bh=3oUqY3vk4sM9ac/Hg//IOCWXx3lzt4hQaahSBJN9wh8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=sIL7upI0+tt8DjlAXPWUJ4G4vPdD2qCYefLW2T99Vz6TyNr1ZQyQKe14j6bNkQaZYVanfSv6t21S/TKcLVCufcuV8BwGWrVC5/IXn5xU0vMHLmocYOgutLnjkFqX35FrpEi2Yq3L7xeCgFw4W1Dm8ByDu8rjbdXnyGCwIrSi018= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=NHDLiP0/; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="NHDLiP0/" Received: from killaraus.ideasonboard.com (2001-14ba-703d-e500--2a1.rev.dnainternet.fi [IPv6:2001:14ba:703d:e500::2a1]) by perceval.ideasonboard.com (Postfix) with UTF8SMTPSA id 2B2B51BA; Sun, 1 Feb 2026 21:21:22 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1769977282; bh=3oUqY3vk4sM9ac/Hg//IOCWXx3lzt4hQaahSBJN9wh8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=NHDLiP0/Q6LC0HFMsyD7sM5Uc45DGK36CUrGy22RSL8Y24ky8z7LOktvciStiZgmb dnw2rDmc9s0yJSKYeJ5OYfw0O2+WBEoNXda8TRPMU2M6A1+DUaKVXsDwFs8bkzbeGl +Z78XTNqsUb9db7MtfzAyPNFrmNg5csE6IDNcvg4= Date: Sun, 1 Feb 2026 22:22:00 +0200 From: Laurent Pinchart To: Oleksandr Natalenko Cc: Jarkko Sakkinen , linux-media@vger.kernel.org, jani.nikula@linux.intel.com, anisse@astier.eu, Mauro Carvalho Chehab , Hans Verkuil , Sakari Ailus , Jacopo Mondi , Ricardo Ribalda , open list Subject: Re: [RFC PATCH] media: Virtual camera driver Message-ID: <20260201202200.GX3374091@killaraus> References: <20260201133342.335680-1-jarkko@kernel.org> <20260201200649.GW3374091@killaraus> <12828248.O9o76ZdvQC@natalenko.name> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <12828248.O9o76ZdvQC@natalenko.name> On Sun, Feb 01, 2026 at 09:14:54PM +0100, Oleksandr Natalenko wrote: > On neděle 1. února 2026 21:06:49, středoevropský standardní čas Laurent Pinchart wrote: > > > There is a notable user base for v4l2-loopback. It is the defacto choice > > > for streaming phone cams. > > > > This will then likely face the same hurdles as v4l2-loopback, the main > > one being that camera support should be upstreamed with proper drivers > > instead of a closed-source userspace daemon. > > > > For phone cameras, the way forward upstream is libcamera. Until kernel > > drivers for ISPs are available, the soft ISP is a stop-gap solution. It > > recently gained GPU acceleration support (with work to improve image > > quality with additional algorithms ongoing). > > My use-case for v4l2loopback is to stream a webcam from one machine to > another (with the help of ffmpeg). Is this covered by something other > than v4l2loopback now? On the transmitting side I assume you don't use v4l2loopback. On the receiving side, the recommened option is PipeWire. -- Regards, Laurent Pinchart