Install this version:
emerge -a =sys-firmware/ivtv-firmware-20080701-r2
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =sys-firmware/ivtv-firmware-20080701-r2
Or alternatively:
emerge --autounmask-write -a =sys-firmware/ivtv-firmware-20080701-r2
# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DESCRIPTION="firmware for Hauppauge PVR-x50 and Conexant 2341x based cards"
HOMEPAGE="https://wiki.gentoo.org/wiki/No_homepage"
SRC_URI="mirror://gentoo/${P}.tar.gz"
LICENSE="Hauppauge-Firmware"
SLOT="0"
KEYWORDS="amd64 ppc x86"
S=${WORKDIR}
src_install() {
insinto /lib/firmware
doins v4l-cx2341x-*.fw v4l-pvrusb2-*.fw
doins *.mpg
}