7 Replies Latest reply: Feb 5, 2009 3:05 AM by Neil Wilkes RSS

    Unsynced after transcoding...

    director.lionel Community Member
      I couldn't find help after a forum search, so I thought I'd ask here...

      When I use the Media Encoder in CS3, I find that when I convert my footage -- Quicktime Video/wav 24-bit audio -- into MPEG2 video/MPEG 16-bit audio, the audio is unsynced. Any suggestions?

      If I encode it into separate mpeg video and pcm audio files, it seems that the audio is synced. Just not when I create a single, multiplexed mpeg file.
        • 1. Re: Unsynced after transcoding...
          Joe Bowden Adobe Employee
          Is the audio encoded to MPEG? I'd avoid that, purely from a player compatibility point of view.

          If encoding to separate video and audio streams works (most likely because audio is being encoded to AC3), I would pursue that as the solution.
          • 2. Re: Unsynced after transcoding...
            director.lionel Community Member
            Yeah, the audio is encoded to mpeg. The reason I want it in mpeg is I want to make trailers to send to others via email. That's why the video and audio can't be separated. I need a file that is multiplexed, so anyone can play it. If you know of another way to create a single file that can be played with any player, let me know...
            • 3. Re: Unsynced after transcoding...
              Joe Bowden Adobe Employee
              Create two versions, then. There is no other way to avoid your DVD problems.

              Encore prefers PCM audio source files, and AC3 files are the most compatible on DVD players.
              • 4. Re: Unsynced after transcoding...
                Neil Wilkes CommunityMVP
                Encode your trailers as a quicktime streaming form.
                Encode your DVD as Elementary streams.
                That way everyone is happy.....
                • 5. Re: Unsynced after transcoding...
                  director.lionel Community Member
                  Could you tell me how to encode the trailers in quicktime streaming form using the Media Encoder?
                  • 6. Re: Unsynced after transcoding...
                    Miles Johnston Community Member
                    I have tried having the video encode as m2v and add the audio from the timeline as wav. Still unsynced. Its worse with NTSC. I have the NTSC encoded as NTSC / m2v via Canopus PC3 from the PAL AVI, and add the wav from the time line separately
                    Both are the same length, but they walkies in between.

                    Tried directly encoding m2v with multiplexed audio in one stop, No good.

                    Now trying the NTSC as a un-coded AVI, and see if Encore manage to get the sound and vision to work together.
                    A true nightmare. It always happens when you have an urgent job.

                    Gather SONIC DVD authoring does not have this problem.
                    • 7. Re: Unsynced after transcoding...
                      Neil Wilkes CommunityMVP
                      >Gather SONIC DVD authoring does not have this problem

                      Er, Encore
                      i is
                      a Sonic authoring application at the core - the GUI is all Adobe, but the Authorcore is Sonic Solutions.
                      To try & deal with the problems though. When you say
                      > I have the NTSC encoded as NTSC / m2v via Canopus PC3 from the PAL AVI, and add the wav from the time line separately

                      are you inferring that the NTSC timeline has been created from a PAL AVI file? Not a good idea really. It's much better to run a standards conversion process on the PAL AVI first, then encode that to MPEG-2 at the same time as the Audio file, preferably to an LPCM 16/48 WAV file - not an MPEG Audio file as this is not a mandatory form, and a title with just MPEG audio is not spec compliant. Can you try that please, just to see what happens?

                      @ lionel.
                      >Could you tell me how to encode the trailers in quicktime streaming form using the Media Encoder?

                      Certainly - CS3 or CS4?