is lossless MP2 to MPC conversion possible?

is lossless MP2 to MPC conversion possible?, goal: reduce bitrate of existing files.

smack View Member Profile	Sep 13 2009, 11:24 Post #1
Group: Members Posts: 180 Joined: 16-January 02 Member No.: 1046	The wiki articles on Musepack say that it's extended from the MP2 codec, e.g. Hydrogenaudio Wiki and Wikipedia Does anybody know if it's feasible to losslessly convert MP2 files into MPC files? If yes, does such a program already exist? (similar to mpc2sv8, the Musepack SV7 to SV8 converter) Motivation: I'm asking this because I have many gigabytes of MP2 files stored on my hard disks. These are captured DVB radio broadcasts in 320kbps 48kHz stereo MPEG-1 Layer II format. I would like to save some storage space here and hope that Musepack with its more efficient lossless coding method can produce smaller files than MP2.

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smack View Member Profile	Sep 30 2009, 10:23 Post #2
Group: Members Posts: 180 Joined: 16-January 02 Member No.: 1046	I'm still unsure whether the lossless conversion is possible or not. By chance I've just found this ancient thread where Frank Klemm stated that he had modified an MPC encoder to emit MP2 bitstreams. Apparently it was never released to the public. What does that tell us about the internal differences between the two codecs? Can the bitstreams be converted? (mp2 <-> mpc) Does anybody know more about this?

а.п.т. View Member Profile	Oct 1 2009, 09:17 Post #3
Group: Members Posts: 36 Joined: 25-January 09 Member No.: 65946	QUOTE (smack @ Sep 30 2009, 12:23) By chance I've just found this ancient thread where Frank Klemm stated that he had modified an MPC encoder to emit MP2 bitstreams. Apparently it was never released to the public. What does that tell us about the internal differences between the two codecs? Can the bitstreams be converted? (mp2 <-> mpc) Does anybody know more about this? Maybe Franc Klemm is the one who can throw some light on this? This post has been edited by а.п.т.: Oct 1 2009, 09:17

Jan S. View Member Profile	Oct 1 2009, 13:07 Post #4
Group: Admin Posts: 2530 Joined: 26-September 01 From: Denmark Member No.: 21	QUOTE (а.п.т. @ Oct 1 2009, 10:17) QUOTE (smack @ Sep 30 2009, 12:23) By chance I've just found this ancient thread where Frank Klemm stated that he had modified an MPC encoder to emit MP2 bitstreams. Apparently it was never released to the public. What does that tell us about the internal differences between the two codecs? Can the bitstreams be converted? (mp2 <-> mpc) Does anybody know more about this? Maybe Franc Klemm is the one who can throw some light on this? Unfortunately as far as we know he doesn't read this forum anymore.

Posts in this topic

smack is lossless MP2 to MPC conversion possible? Sep 13 2009, 11:24

--pv-- If such a tool ever existed you won't be able ... Sep 13 2009, 11:32

r2d QUOTE (smack @ Sep 13 2009, 12:24) Does a... Sep 13 2009, 13:01

Antonski Saving 20% of the size is not bad at all! This... Sep 13 2009, 16:57

SebastianG QUOTE (Antonski @ Sep 13 2009, 16:57) Sav... Sep 13 2009, 18:27

smack QUOTE (r2d @ Sep 13 2009, 14:01) Yes, it ... Sep 13 2009, 20:36

smack The codecs use different scale factor steps: MPC: ... Sep 17 2009, 13:52

smack I'm still unsure whether the lossless conversi... Sep 30 2009, 10:23

а.п.т. QUOTE (smack @ Sep 30 2009, 12:23) By cha... Oct 1 2009, 09:17

Jan S. QUOTE (а.п.т. @ Oct 1 2009,... Oct 1 2009, 13:07

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