From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id 46B7346925 for ; Sat, 24 Jun 2023 21:29:24 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 31E6368C123; Sun, 25 Jun 2023 00:29:22 +0300 (EEST) Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [217.70.183.196]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id CCF2868B2EB for ; Sun, 25 Jun 2023 00:29:15 +0300 (EEST) X-GND-Sasl: michael@niedermayer.cc Received: by mail.gandi.net (Postfix) with ESMTPSA id 38D00E0004 for ; Sat, 24 Jun 2023 21:29:15 +0000 (UTC) Date: Sat, 24 Jun 2023 23:29:14 +0200 From: Michael Niedermayer To: FFmpeg development discussions and patches Message-ID: <20230624212914.GY3250409@pb2> References: <20230622145709.GB3250409@pb2> <6b25dc4ca523c9bebe2762cbefea3548fa74580d.camel@haerdin.se> <17e10f38a5e2ca5cd3b94f91c51c4db0c75499bc.camel@haerdin.se> <20230623213646.GQ3250409@pb2> MIME-Version: 1.0 In-Reply-To: Subject: Re: [FFmpeg-devel] [RFC] SDR X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Content-Type: multipart/mixed; boundary="===============3969705507175448510==" Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: --===============3969705507175448510== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="vRjLMflJ/YJvC+Q3" Content-Disposition: inline --vRjLMflJ/YJvC+Q3 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Jun 24, 2023 at 12:12:50PM +0200, Tomas H=E4rdin wrote: > fre 2023-06-23 klockan 23:36 +0200 skrev Michael Niedermayer: > > On Fri, Jun 23, 2023 at 10:19:37PM +0200, Tomas H=E4rdin wrote: > > > fre 2023-06-23 klockan 22:18 +0200 skrev Tomas H=E4rdin: > > > > tor 2023-06-22 klockan 16:57 +0200 skrev Michael Niedermayer: > > > > > If we support just audio and video (de)modulation it fits > > > > > nicely in > > > > > FFmpeg > > > >=20 > > > > You have no idea what you are getting into. Are we going to > > > > implement > > > > a > > > > DVB-T demuxer in this project? For what purpose? You can just as > > > > well > > > > implement a modem externally that pipes bits into the mpegts > > > > demuxer. > > >=20 > > > Herp, I obviously mean a DVB-T *modem* > >=20 > > as said previously i did a AM demodulator, one classical > > implementation > > and one that demodulates it synchronously mapping in phase and > > quadrature > > to mid and side channels or just mono > > The idea of the mid and side channels is that if theres 1 transmitter > > its > > mono, if there are 2 transmitters they will appear to come from > > different > > directions as one listens >=20 > There are multiple (quasi-)standards for stereo AM. Then there are > things like DRM. >=20 > >=20 > > And i plan to do FM demodulation. >=20 > Drop in a WFM demod box in GNU Radio Companion -> done. Goal 1. is support in FFmpeg & FFmpeg based players Goal 2. is a fun excercise neither is achieved here I wonder why you dont see this. I want to do a fun math excerice, you tell me to use a calculator I think its quite clear what the difference is, no? Its not a question IF i will work on this. The question is if i throw the code away after writing it or if its usefull for someone else. I think this code is usefull to other FFmpeg users. > Or use fmtools. fmscan fmscan: Unable to open /dev/radio0: No such file or directory Seems none of the hardware i have supports this thx [...] --=20 Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB The smallest minority on earth is the individual. Those who deny=20 individual rights cannot claim to be defenders of minorities. - Ayn Rand --vRjLMflJ/YJvC+Q3 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABEIAB0WIQSf8hKLFH72cwut8TNhHseHBAsPqwUCZJdgHwAKCRBhHseHBAsP qypjAJ499T3OpZUQut43sX04qZK5neCo2QCbBc5QD3l4PrESoNYuAqo3DO+Ftwc= =Wf40 -----END PGP SIGNATURE----- --vRjLMflJ/YJvC+Q3-- --===============3969705507175448510== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe". --===============3969705507175448510==--