1 Reply Latest reply on Jul 29, 2014 11:04 AM by A.T. Romano

    Audio/video sync problem

    harpist78

      Hello,

       

      I have used Premiere Elements 8.0, 9.0, 10.0, and now 12.0 ... And am so tired of this persistent problem in ALL of them!  I am running a PC Windows 7 64 bit with 16 gb's of ram.  The camera being used to record videos is a Sony DCR VX2000 and it creates VOB files.  Since I first purchased Adobe Premiere Elements, I've never, and I mean NEVER have gotten the Audio and Video to sync on any computer I've used, I've just had so many projects that I've dicked around unblinking the two and moving the audio to fit, I should have never invested in this product after the first didn't work.

       

      Ive read, printed out, and tried every supposed suggestion and fix out there.  None has worked ... I've:

      - downloaded vobmerge and merged the 3 vobs into 1

      - took the vobs right off the DVD via premiere elements

      - copied the vobs straight from the DVD onto my computer, then imported them

      - used the command prompt merge technique

      - rendered the whole file till the line is green

      - converted vobs to all available formats, from mp4, avi, mov, etc

      - dinked around with every possible video configuration within premiere elements to match camera settings

       

      it was my understanding that in 11.0 and 12.0 that simply importing the file changed all of the necessary video settings.  The first couple of minutes of video and audio play in sync perfectly, but then it just goes awry.  I have played these vobs, merged and unmerged from start to finish in VLC player, windows media player and iTunes with no problems whatsoever ... Something is wrong with premiere, and it's on every freaking video I have ... Can you please help me?  Below is my media info.

       

      General

      Complete name                     : I:\Video\SEMNCO\3.21.2010 - Pops\Act I\VIDEO_TS\VTS_01_1.VOB

      Format                                   : MPEG-PS

      File size                                 : 1 024 MiB

      Duration                                 : 28mn 35s

      Overall bit rate mode             : Variable

      Overall bit rate                       : 5 007 Kbps

       

      Video

      ID                                            : 224 (0xE0)

      Format                                    : MPEG Video

      Format version                       : Version 2

      Format profile                         : Main@Main

      Format settings, BVOP           : Yes

      Format settings, Matrix            : Custom

      Format settings, GOP              : M=3, N=15

      Duration                                   : 28mn 35s

      Bit rate mode                            : Variable

      Bit rate                                      : 4 650 Kbps

      Width                                        : 720 pixels

      Height                                       : 480 pixels

      Display aspect ratio                  : 4:3

      Frame rate                                : 29.970 fps

      Standard                                   : NTSC

      Color space                              : YUV

      Chroma subsampling               : 4:2:0

      Bit depth                                   : 8 bits

      Scan type                                : Interlaced

      Scan order                               : Top Field First

      Compression mode                  : Lossy

      Bits/(Pixel*Frame)                    : 0.449

      Time code of first frame           : 00:00:00;00

      Time code source                     : Group of pictures header

      Stream size                              : 951 MiB (93%)

       

      Audio

      ID                                              : 189 (0xBD)-128 (0x80)

      Format                                      : AC-3

      Format/Info                               : Audio Coding 3

      Mode extension                        : CM (complete main)

      Format settings, Endianness    : Big

      Muxing mode                            : DVD-Video

      Duration                                    : 28mn 35s

      Bit rate mode                            : Constant

      Bit rate                                      : 256 Kbps

      Channel(s)                                : 2 channels

      Channel positions                     : Front: L R

      Sampling rate                            : 48.0 KHz

      Bit depth                                    : 16 bits

      Compression mode                   : Lossy

      Delay relative to video               : -67ms

      Stream size                               : 52.3 MiB (5%)

       

      Menu

        • 1. Re: Audio/video sync problem
          A.T. Romano Level 7

          harpist78

           

          First about version 11 and 12 and how it takes control over setting the project preset for you. Bottom line from my perspective is to set the project preset in those versions manually and then import your media into the project until you are sure how the version is handling the setting of project preset task. Please see blog post on that.

          ATR Premiere Elements Troubleshooting: PE11: Accuracy of Automatic Project Preset (New Project Dialog) Setting

          Bottom line: sometimes the project does it right, sometimes not. In the not situation, then the manual setting of the project preset.

           

          I have reviewed your question and MediaInfo (Tree Version) properties readout for the DVD-VIDEO video file from the Sony DCR VX2000.

          a. The field order of the video file VOB is Upper Field First instead of what Premiere Elements uses, that is, Bottom Field First.

          b. More directly related to your audio out of sync issue is the higher audio bitrate (256 Kbps) as compared to what is used by Premiere Elements (192 Kbps).

           

          Maybe it would go nowhere, maybe it would, but I would like to see the results when different levels (balancing) of video and audio bitrates are used in the Sony at recording time. For your sample we see

          Video Bitrate 4550 Kbps (VBR)

          Audio Bitrate 246 Kbps (Constant)

          Whereas for the Premiere Elements video file VOB, you would see

          Video Bitrate  7767 Kbps (VBR)

          Audio Bitrate 192 Kbps (Constant)

           

          I have looked through the User Guide for the Sony camera and have yet to find a place in the camera where these two specifications can be customized.

           

          I cannot speak to what other VLC, Windows Media Player, and iTunes do to files that are played back with it. And, I have never produced DVD-VIDEO on DVD disc from a Sony camera. But, I have produced DVD-VIDEO on DVD disc with Premiere Elements and other programs in conjunction with Premiere Elements and have not run into audio out of sync issues. And, the few Premiere Elements users with video file VOB out of sync issues have resolved issue with the Command Prompt technique.

          ATR Premiere Elements Troubleshooting: PE: DVD-VIDEO/Seamless VOB Ripping

           

          Do you have another source of DVD-VIDEO on DVD disc so that you can take the Sony out of the equation for troubleshooting purposes?

           

          Please review and consider and then we can discuss this further as indicated.

           

          Thank you.

           

          ATR