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MpegDec 2.5 update

Author	Topic
markymark Junior Member 223 Posts	Posted - 01 Jun 2002 : 21:33:17 The new version of MpegDec MpegDec 2.5 is at http://ftp.univie.ac.at/systems/mac/info-mac/_Graphic_&_Sound_Tool/_Sound/mpeg-dec-25.hqx and also at the info-mac hyperarchive which is down at the moment. It will also be at the Mpegdec website http://members.aol.com/xanathus/mpegdec/ The 2.5 version has playback controls, multiple playlists, MPEG 2.5 and mp1 mp2 support etc
candyPunk Full Member USA 856 Posts	Posted - 01 Jun 2002 : 23:49:29 It works great. Everyone download a copy! { candyPunk } { Captain of Observation, 68k MLA } { 68k Macs liberated: 3} { My baby: Q660av }
SiliconValleyPirate Junior Member United Kingdom 273 Posts	Posted - 10 Jun 2002 : 15:29:58 I have to ask, as I do anyone I meet who is doing MP3 on a 68k Mac, have you ever considered looking into writing DSP support into it fpr AV Macs? It'd make a 660av or 840av into a killer MP3 player -- Mark Benson FlatPackMacs http://fpm.gotdns.com 2nd Lieutenant - 68kMLA LC Quartermaster Flat Packing Macs for 68k MLA airlift excercises Macs Liberated = 14!
candyPunk Full Member USA 856 Posts	Posted - 10 Jun 2002 : 18:21:46 There's been talk. The way I understand it, the AT&T DSP's in those macs are hard to program { candyPunk } { Captain of Observation, 68k MLA } { 68k Macs liberated: 3} { My baby: Q660av }
markymark Junior Member 223 Posts	Posted - 10 Jun 2002 : 21:52:23 I've got all the programming tools to make a av dsp version but at the moment I hav'nt got a av mac so I've decided to make a Audiomedia DSP version which I'm working on at the moment. If all goes to plan MpegDec should run on the Audiomedia I Audiomedia II Sound Accelerator II NB24 etc using the Motorola 56001 DSP.
Trash80toG-4 NIGHT STALKER USA 2899 Posts	Posted - 10 Jun 2002 : 22:11:40 quote: If all goes to plan MpegDec should run on the Audiomedia I Audiomedia II Sound Accelerator II NB24 etc using the Motorola 56001 DSP. very cool, now i know what's going in the second slot in my DuoBoomBoxDock hack! oops, i probably can't use the SA II in the same box as a PAS 16 can i? did you come up with a NuBus signal workaround? jt ™. Trash Hauler: call sign: eight-ball C.O. AC-130H SpecOps 68kMLAAF
markymark Junior Member 223 Posts	Posted - 11 Jun 2002 : 00:53:40 You might be able to have the PAS 16 and SA II together. The SA II and Audiomedia can bypass the sound manager for sound output. The Audiomedia I doesn't work in my Quadra 700 and I don't think it ever will. It could be a rom, bus speeds nubus pins etc problem so I'm using the Audiomedia I in my IIci and that's where it's staying. The Audiomedia II is ok with all the nubus macs. It doesn't matter much if the Audiomedia I is in a quadra or a IIci because the speed really depends on the DSP on the Audiomedia card.
candyPunk Full Member USA 856 Posts	Posted - 11 Jun 2002 : 16:57:40 Where do you live, markymark? Would shipping from Israel knock out your wallet? topic.asp.TOPIC_ID=1756.html I've got a 40 megs HD you can pop in it, and I'll bet you have a simm to use temporarily. There's your av mac for you! { candyPunk } { Captain of Observation, 68k MLA } { 68k Macs liberated: 3} { My baby: Q660av }
zetagi Starting Member Switzerland 2 Posts	Posted - 12 Jun 2002 : 02:05:04 It works on my Powerbook Duo 270c 68030 @ 33MHz 16Mb Ram Thanks!
TiMacLover Senior Member USA 1282 Posts	Posted - 12 Jun 2002 : 02:11:43 Coolness! btw, welcome to the army! Jeremy "I'll see you on the Dark Side Of The Moon" - Pink Floyd Covert Ops 68k Hacks General Macs Liberated:18 ENTER THROUGH THE GATES
SiliconValleyPirate Junior Member United Kingdom 273 Posts	Posted - 12 Jun 2002 : 02:44:05 I've got all the programming tools to make a av dsp version but at the moment I hav'nt got a av mac so I've decided to make a Audiomedia DSP version which I'm working on at the moment. Whaaahhhh... Some one lend him an 840av! Failing that I'll happiy test any code you can spew up on mine but I guess you'd want to have one there to get the best feedback. -- Mark Benson FlatPackMacs http://fpm.gotdns.com 2nd Lieutenant - 68kMLA LC Quartermaster Flat Packing Macs for 68k MLA airlift excercises Macs Liberated = 14!
markymark Junior Member 223 Posts	Posted - 12 Jun 2002 : 05:24:12 Thanks for the av offers but I can probably pick one up locally and also I'm doing the Audiomedia version before I even think about a av version.
Trash80toG-4 NIGHT STALKER USA 2899 Posts	Posted - 12 Jun 2002 : 08:11:42 quote: It works on my Powerbook Duo 270c 68030 @ 33MHz 16Mb Ram Thanks! WOW! how WELL does it work tho? you're just using the Duo's mono sound capability or are you using upgrade hardware like my PAS 16. i can probably run the PAS 16 with the 270c board from my Duo parts load (if it works? or the 280 if that one works!) yo, markymark! do you think that MPegDec will run better on a 270c with copro/'030 at 33Mhz or on a 280/280c on a 68LC040 at 33 Mhz? will the copro make any difference? will your code run more efficiently on one proc or the other? make sure you let me know when i can try your code on my SA2! what extensions will be required? or are you taking care of interfacing with it using standard toolbox routines? wonders:from the sound and slot managers? wtf does that mean, anyway, i think that makes sense! =8-\ bleh! jt ™. Trash Hauler: call sign: eight-ball C.O. AC-130H SpecOps 68kMLAAF
cinemafia Guerrilla Recon Leader USA 2965 Posts	Posted - 12 Jun 2002 : 09:36:23 I put it on my Duo 280c last night along with about 5 mp3's, but haven't tested it, yet. I will later today! 666th poster and 666th thread-creator Mod of the Mac II series Forums Total 68K Macs liberated: 7 I Have No Legs!
LoneRanger Starting Member 31 Posts	Posted - 12 Jun 2002 : 17:01:02 I tried one of the older versions of the programs a few months ago on a duo 280c. It ran fine. I could almost get the quality to the max setting without having it skip.
cinemafia Guerrilla Recon Leader USA 2965 Posts	Posted - 13 Jun 2002 : 08:49:55 It took my a little while to figure out how to get 2.5 to work with the playlists, etc. (because it took me while to get the ReadMe open), but once I did, it's just fantastic! Very good interface for such a home-grown 68k app!! BTW - Mark, you may want to put that ReadMe in a standard Mac format like SimpleText, etc. The only way I could open and read it was by using Netscape! Anyway, I used it on my Duo 280c with the following settings: Downsample by 2, highest quality and mono-mix (only one speaker, of course). It ran great! I could play anything from 128-192kbps mp3 files and they really sounded good...I mean, the little Duo's speaker isn't much, but it definitely attained clock-radio quality!! 666th poster and 666th thread-creator Mod of the Mac II series Forums Total 68K Macs liberated: 7 I Have No Legs!
SiliconValleyPirate Junior Member United Kingdom 273 Posts	Posted - 14 Jun 2002 : 08:09:01 Very encouraging so far. The FPU version runs really well on my 840av (even without DSP support ). I can play back a 192kbps MP3 with the following settings with little or no stutter: Downsample 2 Quality 1 Mono or Stereo Buffer Large System Return Low The only matter of concern is that it does not seem to be playing back both Stereo channels (I delibereately used a file that does stereo shift from one side to the other) in either stereo or Mono mode. Still, looks pomising, I like the playlist support, that's something that's been missing in other MP3 players. <edit>RE Stereo: My mistake, sorry - it's the computer. I think the track must have some Dolby in it or something as it seems to do it from the CD too.</edit> -- Mark Benson FlatPackMacs http://fpm.gotdns.com 2nd Lieutenant - 68kMLA LC Quartermaster Flat Packing Macs for 68k MLA airlift excercises Macs Liberated = 14! Edited by - SiliconValleyPirate on 14 Jun 2002 08:19:22
markymark Junior Member 223 Posts	Posted - 15 Jun 2002 : 03:54:01 There is a bug? in MpegDec AIFF. MpegDec's decoded AIFF file is treated as if it were a AIFC (compressed AIFF file) when used with toast and some other apps. I'll fix it soon but a quick fix is to convert MpegDec's AIFF file to another AIFF file using SoundApp (it only takes a few seconds) and then use the converted file. Quicktime and SoundApp seem ok with MpegDec's AIFF files but some others (toast) have a a bit of trouble reading the AIFF header which is strange because MpegDec uses quicktime to build the AIFF header in the first place.
markymark Junior Member 223 Posts	Posted - 17 Jun 2002 : 04:14:30 I've updated MpegDec 2.5 to 2.5.3. Updated the fpu version to have no delay when playing the first mp3 file and fixed the AIFF toast problem. It's at http://ftp.univie.ac.at/systems/mac/info-mac/_Graphic_&_Sound_Tool/_Sound/mpeg-dec-253.hqx
mathgeek Junior Member USA 113 Posts	Posted - 17 Jun 2002 : 14:46:13 First let me say that my mind was blown when I actually heard this thing work on my performa. This is incredible. Fantastic job! I ran 2.5.3 (non-fpu) on my performa 636 33MHz. I managed to get skip-free smooth playing with each of the following settings: stereo, downsampling=2, quality=1 mono, downsampling=2, quality=1 mono, downsampling=1, quality=0 The only trouble I encountered was trying to play an MP3 encoded at 192kbps on the stereo setting. It sounded a little jittery. The stereo setting only worked with quality=1 when I set system return to high. I also tried the PPC version on my powerbook 1400 w/ 400MHz G3 upgrade. It skipped slightly every few seconds, but otherwise sounded nice. I remeber someone asking for compatibility with the IR port on the performa series so they could use a remote control. I agree that this would be an excellent feature. Thanks for such a great program! mathgeek 68K Macs Liberated: LC, Performa 636, IIx
Trash80toG-4 NIGHT STALKER USA 2899 Posts	Posted - 17 Jun 2002 : 17:07:05 quote: I remeber someone asking for compatibility with the IR port on the performa series so they could use a remote control. I agree that this would be an excellent feature. that really would be awsome on the 630 series! jt ™. Trash Hauler: call sign: eight-ball C.O. AC-130H SpecOps 68kMLAAF
markymark Junior Member 223 Posts	Posted - 17 Jun 2002 : 21:58:13 On those settings the 40Mhz macs handle 192kbs mp3s, see SiliconValleyPirate's post above. I've had reports that a PowerMac 9500 runs the PPC version ok. The PPC version is really just a experiment. I hav'nt tested it and the 68k fpu version is probably the best choice for low end PPC's.
Marchie Chaplain USA 911 Posts	Posted - 18 Jun 2002 : 14:46:22 I'm going ot download tonight and try it in some systems, but I'm curious... does it do VBR (Varibale Bit Rate) encodeing? That's what I have all my current MP3s done in 192 Max VBR ~Chaplain Marchie Holder of the Compact Mac - -Stick of Justice, with Explodeing CRT head -Wand of Power with Shocking Flyback Transformer Tip ~~"We are all Mad here"~~
SiliconValleyPirate Junior Member United Kingdom 273 Posts	Posted - 18 Jun 2002 : 16:59:57 quote: On those settings the 40Mhz macs handle 192kbs mp3s, see SiliconValleyPirate's post above. Actually, after extensive testing, it does chop about a bit on 192kbps MP3s. It seems fine on 128kbps files though, I need to test it on 160kbps files to see where the halfway point is but I'm currently trying to put time into the proto-stages of looking for a job. -- Mark Benson FlatPackMacs http://fpm.gotdns.com 2nd Lieutenant - 68kMLA, LC Quartermaster Flat Packing Macs for 68k MLA airlift excercises Macs Liberated = 14!
markymark Junior Member 223 Posts	Posted - 25 Jun 2002 : 01:19:48 I don't really recommend going past 128kbps in the readme (the 68040 aint an Athlon) but at higher bitrates you might have to use singlemix mode which is ok if the mp3 file doesn't use stereo effects. MpegDec does VBR and all the other mp3 formats as well as mp2 and mp1. I used a couple of steely dan demos in VBR format for testing and they played ok. The PPC 2.5.3 version runs ok on a PowerMac G4/400 as well as a G3-upgraded PowerMac 9500. So it might be useful on low end PPC's. I'm not going to release the dsp audiomedia Sound Accelerator version. I'm doing it for my own amusement and I also expect a user base of up to 3 people so if anyone wants the DSP Audiomedia version you can email me and I'll send it to you when it's finished.

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