Results 1 to 5 of 5

Thread: Audio sync problems with relatively slow connection

  1. #1
    Join Date
    Aug 2009
    Posts
    3
    Rep Power
    0

    Exclamation Audio sync problems with relatively slow connection

    Hello,

    I use Replay Media Catcher 3.0.2 to capture RTMP streams from medici.tv. My connection is not 100% adequate, and as a result playback in my web browser suffers from the occasional short interruptions that we are all familiar with in streaming video.

    I purchased RMC in order to be able to watch these videos offline, and thus without those annoying interruptions.

    The problem is that there is a gradual loss of synchronization between audio and video in all captured video files (.flv). In other words, audio and video are perfectly in sync at the beginning, slightly out of sync 5 minutes into the recording, and terribly out of sync 45 minutes or so into the recording.

    Any solutions?

    Thank you.
    Last edited by macula; 08-14-2009 at 08:25 AM.

  2. #2
    Join Date
    Oct 2008
    Location
    World
    Posts
    1,549
    Rep Power
    17

    Default

    Just recorded a 280 Mb video with RMC 3.0.2 and it is perfectly synced. What version of RMC do you use? What player do you use to play your recordings?

  3. #3
    Join Date
    Aug 2009
    Posts
    3
    Rep Power
    0

    Default

    Thank you for your response.

    I use RMC 3.0.2 to record and the bundled FLV player by Applian to playback the file. Other players have trouble playing back the file and they produce artifacts (like traces of previous frames that seem to "stick"). Quite interestingly, those players manage to synchronize audio and video quite accurately. Could the problem lie in some missing ("dropped") frames of video, which different players deal with with different methods, resulting either in corrupt video or in out-of-sync audio?

    I should have noted that the introductory video (and all videos under the "Playlist" tab of the web site) is indeed recorded perfectly well. The problematic videos are located under the "Catalogue" tab. May I kindly ask you to repeat the test with one of those videos?
    Last edited by macula; 08-14-2009 at 09:35 AM.

  4. #4
    Join Date
    Aug 2009
    Posts
    3
    Rep Power
    0

    Default

    OK, mea culpa. The problem exists with and without the RMC, so I guess my downstream bandwidth is just inadequate, OR my Windows Virtual Machine on my MAC (via VMWare Fusion) is slowing the system down too much. Will try again by booting in Windows with no virtualization.

    Thanks.

  5. #5
    Join Date
    Oct 2008
    Location
    World
    Posts
    1,549
    Rep Power
    17

    Default

    Quote Originally Posted by macula View Post
    I should have noted that the introductory video (and all videos under the "Playlist" tab of the web site) is indeed recorded perfectly well. The problematic videos are located under the "Catalogue" tab. May I kindly ask you to repeat the test with one of those videos?
    The videos in the Catalogue are too short for me to notice any problem with syncing. Try to watch with freeware VLC player and see whether there is any difference with Applian FLV Player. Also try to fast forward online videos and see whether they are synced well.

Similar Threads

  1. Converted Video/Audio out of sync
    By Japes in forum Replay Media Catcher
    Replies: 3
    Last Post: 07-29-2009, 02:08 AM
  2. Video and audio sync issue.
    By wcwman18 in forum Replay Video Capture
    Replies: 7
    Last Post: 07-27-2009, 02:02 PM
  3. Audio out of sync.
    By MMM in forum Replay Media Catcher
    Replies: 1
    Last Post: 06-05-2009, 07:53 PM
  4. Video and Audio Out of Sync
    By huskerbuck in forum Converting Audio and Video
    Replies: 6
    Last Post: 11-29-2008, 08:24 AM
  5. Loss of audio sync?
    By meijin in forum Replay Converter
    Replies: 2
    Last Post: 03-06-2008, 02:58 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About these forums...
Applian Technologies makes these discussion forums available for our customers to assist other users. We do read this content and appreciate all your suggestions and comments. If you need technical support or customer service, please visit the links to the right.
Let's Be Friends