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Unable to convert large files from MP3 to Wave

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  • tester dude

    • Nov 2004
    • 8

    Unable to convert large files from MP3 to Wave

    :cry: I've just downloaded v11 registered OK. Program works fine on regular tracks however I do have a number of music files that are >100MBytes in size. When I try to convert these large files from MP3 to wave, the program goes through for about 30 sec and just finishes and I always end up with a file which is approx. the same size as the MP3.
    Win XP - Service pack 2
    2.5 Ghz pentium
    1 GByte RAM
  • LtData
    dBpoweramp Guru

    • May 2004
    • 8288

    #2
    Re: Unable to convert large files from MP3 to Wave

    What is the bitrate and frequency of these mp3s?

    Over 100MB how long are they?

    Comment

    • tester dude

      • Nov 2004
      • 8

      #3
      Re: Unable to convert large files from MP3 to Wave

      This particular file is encoded at 128 with a frequency of 44100

      Comment

      • ChristinaS
        dBpoweramp Guru

        • Apr 2004
        • 4097

        #4
        Re: Unable to convert large files from MP3 to Wave

        Originally posted by tester dude
        This particular file is encoded at 128 with a frequency of 44100
        100MB for an mp3 @128kbps means it's about 90-100 minutes of audio. As a 16-bit stereo 44.1KHz wav it would be about 1GB or more. I think this may well be a problem.

        Comment

        • Spoon
          Administrator
          • Apr 2002
          • 44471

          #5
          Re: Unable to convert large files from MP3 to Wave

          You will be running at the limit of dBpowerAMPs handling of wave files, there is a theoretical maximum of 4GB.
          Spoon
          www.dbpoweramp.com

          Comment

          • tester dude

            • Nov 2004
            • 8

            #6
            Re: Unable to convert large files from MP3 to Wave

            :o This is not the be all and end all, in all likelihood I'll cut these files into smaller more manageable chunks. One observation is that this appears to happen only on files that are encoded at 128

            Comment

            • ChristinaS
              dBpoweramp Guru

              • Apr 2004
              • 4097

              #7
              Re: Unable to convert large files from MP3 to Wave

              Originally posted by tester dude
              :o This is not the be all and end all, in all likelihood I'll cut these files into smaller more manageable chunks. One observation is that this appears to happen only on files that are encoded at 128
              You've got to estimate the resulting wav file size, and that would be the limiting factor, pretty much regardless of bitrate. Of course extra complicating factors would be if you are also trying to go from mono to stereo or vice versa, or change frequency as well, or if your original encoded file is at variable bit rate, etc.

              Comment

              • xoas
                dBpoweramp Guru

                • Apr 2002
                • 2662

                #8
                Re: Unable to convert large files from MP3 to Wave

                TesterDude-
                You might want to look at adjusting your priority for your conversion, especially if it is set at above normal, to below normal or even to low.

                Best wishes,
                Bill Mikkelsen

                Comment

                • tester dude

                  • Nov 2004
                  • 8

                  #9
                  Re: Unable to convert large files from MP3 to Wave

                  Roughly translated your looking at a conversion rate of about 11 -1. i.e. an 11MByte wave file for every 1 MByte MP3 file @ a 128 bit rate. The 105MByte file I'm trying to convert is well within the 4 GByte limit mentioned.

                  Comment

                  • ChristinaS
                    dBpoweramp Guru

                    • Apr 2004
                    • 4097

                    #10
                    Re: Unable to convert large files from MP3 to Wave

                    Originally posted by tester dude
                    Roughly translated your looking at a conversion rate of about 11 -1. i.e. an 11MByte wave file for every 1 MByte MP3 file @ a 128 bit rate. The 105MByte file I'm trying to convert is well within the 4 GByte limit mentioned.
                    That's a theoretical maximum.

                    Did you try a test Conversion at all? If that fails then the file is way too big.

                    Comment

                    • tester dude

                      • Nov 2004
                      • 8

                      #11
                      Re: Unable to convert large files from MP3 to Wave

                      Yes, the test conversion failed. But as said I'll just cut this file into chunks and deal with it that way.

                      Comment

                      • ChristinaS
                        dBpoweramp Guru

                        • Apr 2004
                        • 4097

                        #12
                        Re: Unable to convert large files from MP3 to Wave

                        Originally posted by tester dude
                        Yes, the test conversion failed. But as said I'll just cut this file into chunks and deal with it that way.
                        Good move :D

                        Comment

                        • LtData
                          dBpoweramp Guru

                          • May 2004
                          • 8288

                          #13
                          Re: Unable to convert large files from MP3 to Wave

                          Looks like we've all learned something today. Making 100MB mp3 files and trying to convert them using dMC doesn't work. One of those things nobody really tries albeit for a few people that do.

                          Comment

                          • xoas
                            dBpoweramp Guru

                            • Apr 2002
                            • 2662

                            #14
                            Re: Unable to convert large files from MP3 to Wave

                            Making 100MB mp3 files and trying to convert them using dMC doesn't work.
                            Having converted a 73.5 MB mp3 file directly to wav (resulting file was over 880 MB), without problem on a 1.3 GHz Celeron with 383 MB ram, I have my doubts about this statement as it applies to Tester dude. On the other hand, I suspect it would be preferable to avoid such large files.

                            I do think that the Test Conversion might fail if the conversion priority setting is too high but that it may succeed if you give your conversion a lower priority. The conversion priority is set at the window that pop ups after you have started the conversion to show the progress of the conversion. I would urge Tester dude to give this a try unless he has already done so.

                            Best wishes,
                            Bill Mikkelsen

                            Comment

                            • tester dude

                              • Nov 2004
                              • 8

                              #15
                              Re: Unable to convert large files from MP3 to Wave

                              Bill,
                              Thanks for your input, I have tried your suggestion and set the priority to low with the same result. So unfortunately this fail to solve the problem

                              Comment

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