From owner-freebsd-multimedia Fri May 16 17:08:20 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id RAA27862 for multimedia-outgoing; Fri, 16 May 1997 17:08:20 -0700 (PDT) Received: from fyeung5 (netific.vip.best.com [205.149.182.145]) by hub.freebsd.org (8.8.5/8.8.5) with SMTP id RAA27855 for ; Fri, 16 May 1997 17:08:16 -0700 (PDT) Received: from fyeung8.netific.com (fyeung8.netific.com [204.238.125.8]) by fyeung5 (8.6.11/8.6.9) with SMTP id CAA19037; Fri, 16 May 1997 02:39:00 -0700 Received: by fyeung8.netific.com (5.x/SMI-SVR4) id AA14669; Fri, 16 May 1997 14:37:04 -0700 Date: Fri, 16 May 1997 14:37:04 -0700 From: fyeung@fyeung8.netific.com (Francis Yeung) Message-Id: <9705162137.AA14669@fyeung8.netific.com> To: pete@sms.fi Subject: Re: real time mpg3 encoder? Cc: hasty@rah.star-gate.com, multimedia@FreeBSD.ORG X-Sun-Charset: US-ASCII Sender: owner-multimedia@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Pete, Thank you for the education. Now, I understand. You folks are talking about MPEG1 layer 3 audio streams and players. MPEG1 audio can be encoded in 3 standards called layers. MPEG2 can also support MPEG1 audio. MPEG2 audio added surround sound with 5.1 channels. DVD uses MPEG2 video but MPEG2 audio only in Europe, Dolby AC3 audio in the US. In the past, most MPEG (1 and 2) players and encoders are for layer 1 and 2. Layer 3 is for low bit rate encoding and only until recently people are using layer 3 to stream high quality audio on Internet. Many thanks. Francis > From root@fyeung25.netific.com Fri May 16 14:26 PDT 1997 > Date: Fri, 16 May 1997 21:36:51 +0300 (EEST) > From: Petri Helenius > To: fyeung@fyeung8.netific.com (Francis Yeung) > Cc: hasty@rah.star-gate.com, multimedia@FreeBSD.ORG > Subject: Re: real time mpg3 encoder? > > > Francis Yeung writes: > > > > Greetings, > > > > Correct me if I am wrong. > > > > I thought MPEG 3 is dead and MPEG 4 is the way to do. > > > As I said, there is no MPEG-3. But there is MPEG Audio Layer-3. > > MPEG-4 is a low-bandwidth video codec. > > Pete > > >