From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dustin Barlow" Date: Tue, 20 Jun 2000 22:28:35 +0000 Subject: Re: [linux-audio-dev] Re: Multimedia compression Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sound@vger.kernel.org I will second Paco's synopsis of Shorten. I have close to 100 concerts that were compressed using the lossless setting in Shorten, and they are *exact* copies of the original when decompressed. You can do an md5sum of the wav file prior to compressing it and it will match after it is uncompressed later on. I can typically cut a wave file size in half and it is lossless...I don't think you can ask for more then that...at least not yet anyway. I have not tried to do lossy compression with Shorten so I cannot comment on it's performance in the lossy realm... Another thing is that WinShorten *will* stream shorten files so that you do not have to convert them to wav to listen to them. I setup a machine to do that very thing so that I didn't have to burn my extensive SHN library to audio CDR or wav file prior to listening. I haven't found a streaming version of Shorten for linux, so I grabbed the source code the other day and am looking into what it would take to do it...shouldn't be to difficult. ~Db ----- Original Message ----- From: To: Benno Senoner Cc: Sergey ; ; ; John Lazzaro Sent: Tuesday, June 20, 2000 12:08 PM Subject: [linux-audio-dev] Re: Multimedia compression > On Sat, 17 Jun 2000, Benno Senoner wrote: > > > I tried shorten some time ago: > > > > OTOH, when using lossless compression the gain is sometime minimal, > > only 20% if you are unlucky. > > Not much for my taste. > > I find this very hard to believe. Speaking from my own experience, I've > had nothing but outstanding results with SHORTEN. > > I collect live concert bootlegs; recorded on DAT, dumped down onto the > HDD as WAVs, compressed to SHNs, and burned onto CDs that I listen to. > I've got nearly 100 such CDs sitting here at my side, and here's the > stats based on those live concert CDs. > > My average song compression 52% savings > My worst single-song comression 35% savings > My best single-song compression 60% savings > > The main thing I wanted to point out is that I've never had a something > compress less than 35%. > > peace, > -Paco