7 Replies Latest reply on Nov 15, 2010 6:08 PM by the_wine_snob

    Interesting Error with DV AVI video

    41NBC Engineer

      Alright, my specs are listed elsewhere, but we'll move on past them for now

       

      I use DV AVI (DVSD codec) video pretty regularly. We use firestore hard drives and hook up firewire to do direct file based dumps. The issue I am having is that certain clips in one bay (the one I am currently typing from) will have no audo in Ppro, but if I use windows media player or quicktime it will play with audio everytime, and once imported into adobe it shows that it has waveforms in the clip preview (in the project pane). But if I use any option to have it play in adobe (the preview source monitor, pulling it onto the timeline, using the small preview monitor in the upper left of the projet pane) I get NO audio, no wave form, no levels in the monitor, nothing. I am using the same project I always do, and I have tried reimporting the footage into new projects, making sure the project wasn't corrupted. The next obvious question is: is the video corrupted? No, I've actually moved it to other bays and it works perfectly, as it should.

       

      This bay has up to day 64 bit audio and video drivers, and I am fairly sure it has up to date 64 bit codecs (IEC 61834 and SMPTE 314M is the vendor of the DVSD codec according to G-spot), though some confirmation of that would be great. Below is the GSPOT capture for one of the clips that is a problem. problem clip for DV audio problem.png

        • 1. Re: Interesting Error with DV AVI video
          the_wine_snob Level 9

          According to G-Spot, there is no Audio in that Clip - box in the lower-left-middle.

           

          I seem to recall a similar issue with Firesrtore devices, but that was quite some time back, maybe even before the forum change, so it might be lost forever. If I can find it, and it holds any clues, I will post a link to it.

           

          Good luck, and I would explore the Firestore unit.

           

          Hunt

          • 2. Re: Interesting Error with DV AVI video
            the_wine_snob Level 9

            OK, this is the THREAD that I was thinking of, but not sure if it will help.

             

            There was also one with issues and a Matrox card, but I assume that you do not have anything Matrox in your suite.

             

            Good luck,

             

            Hunt

            • 3. Re: Interesting Error with DV AVI video
              Ann Bens Adobe Community Professional & MVP

              There is no audio clip in the timeline when clips is  added from the project window?

              Gspot shows no audio. What does Mediainfo tell you.

              The avi shows its of Type 1, they need to be rendered first in order to be previewed.

              • 4. Re: Interesting Error with DV AVI video
                41NBC Engineer Level 1

                Mediainfo gives me this information about the audio:

                ID                               : 0-0
                Format                           : PCM
                Muxing mode                      : DV
                Muxing mode, more info           : Muxed in Video #1
                Duration                         : 4mn 8s
                Bit rate mode                    : Constant
                Bit rate                         : 1 536 Kbps
                Channel(s)                       : 2 channels
                Sampling rate                    : 48.0 KHz
                Bit depth                        : 16 bits
                Stream size                      : 0.00 Byte (0%)

                 

                And this about the video:

                ID                               : 0
                Format                           : DV
                Duration                         : 4mn 8s
                Bit rate mode                    : Constant
                Bit rate                         : 24.4 Mbps
                Width                            : 720 pixels
                Height                           : 480 pixels
                Display aspect ratio             : 4:3
                Frame rate mode                  : Constant
                Frame rate                       : 29.970 fps
                Standard                         : NTSC
                Chroma subsampling               : 4:1:1
                Bit depth                        : 8 bits
                Scan type                        : Interlaced
                Bits/(Pixel*Frame)               : 2.357
                Stream size                      : 852 MiB (100%)

                 

                and this was the AVI info (about the wrapper itself I assume)

                Complete name                    : D:\Melissa\20101115-123716a01.avi
                Format                           : AVI
                Format/Info                      : Audio Video Interleave
                Format_Commercial_IfAny          : DV
                File size                        : 854 MiB
                Duration                         : 4mn 8s
                Overall bit rate                 : 28.9 Mbps
                Recorded date                    : UTC 2010-11-15 13:28:53

                 

                This is the first time I've used MediaInfo, so if I gave you the wrong info, let me know.

                 

                The wierd thing is that I just imported a lot of video from an identical (but different) camera into the same bay, and it all worked perfectly. And again, the particular footage in question played perfectly in other bays.

                 

                We have used Matrox in the past (and in fact have one legacy bay), but it never touched this footage.

                • 5. Re: Interesting Error with DV AVI video
                  the_wine_snob Level 9

                  It appears that somewhere along the way, the Audio is being lost.

                   

                  Did I read correctly that in the other bay, using the same Firestore, you DID get Audio?

                   

                  If so, we may never know what the issue was.

                   

                  Glad that Matrox does not figure into the mix. As you had not mentioned it, I did not link to those threads.

                   

                  Good luck,

                   

                  Hunt

                  • 6. Re: Interesting Error with DV AVI video
                    41NBC Engineer Level 1

                    Well, using the same clip in another bay. I didn't hook up the firestore more than once. I just transferred it across the network (gigabit for the win!) to the other bays. Our 6pm news just ran, with the footage in question. I hope its not just some sort of localized error with that clip in that bay, because as you mentioned we may never find it.

                    • 7. Re: Interesting Error with DV AVI video
                      the_wine_snob Level 9

                      Well, the good news is that, well... you made the news.

                       

                      Actually, I would hope that it was a very localized, as that might be easier to troubleshoot.

                       

                      Good luck,

                       

                      Hunt