Results 1 to 6 of 6

Thread: why don't our segments align

  1. #1

    Default why don't our segments align

    It looks like our segments don't align for HLS streams. Under what conditions would this be the case? We are using ffmpeg to produce the H.264 streams of different bitrates from the same source. Is there any way that we can query wowza to look at the segments and see where they drift?

  2. #2
    Join Date
    Dec 2007
    Posts
    22,013

    Default

    ffmpeg is not going to work. Wirecst doesn't either. FMLE will work. The Wowza Transcoder is the best solution.

    You can use this method to see how streams are aligning

    http://www.google.com/url?sa=t&rct=j...UaU-S1a_BHT-JQ

    Richard

  3. #3

    Default

    these are VOD streams. What does the wowza transcoder have to do with this?

  4. #4
    Join Date
    Dec 2007
    Posts
    22,013

    Default

    I couldn't tell. Use Expression 4 encoder. ffmpeg won't work for vod encoding either:

    http://www.wowza.com/forums/content....ideo-on-Demand

    Richard

  5. #5

    Default

    Thanks Richard, but our current workflow (that we have hundreds of feature length videos encoded with) uses ffmpeg. For HLS this seems to be working fine for quicktime and ios decoding. Is there some way that you can recommend us taking a look at the segments that are generated by wowza to see where the drift might be coming from. We will certainly take your suggestion about Expression 4, but that isn't a very easy solution for us.

  6. #6
    Join Date
    Dec 2007
    Posts
    22,013

    Default

    Are you encoding multiple bitrate versions, and asking about key frame alignment? Or is this about audio/video synch?

    They are both encoding issues. Wowza doesn't have a way to debug either for vod.

    Richard

Similar Threads

  1. TransRate multi-recording & keyframe align
    By spiritsoul in forum AddOn: Transcoder
    Replies: 7
    Last Post: 09-06-2013, 03:35 AM
  2. Align video and audio on wowza 2.2.4 for smoothstreaming
    By kavita in forum Live Streaming and Encoder Discussion
    Replies: 1
    Last Post: 08-13-2013, 05:09 AM
  3. Align audio and video
    By spiritsoul in forum Tutorials Discussion
    Replies: 2
    Last Post: 07-17-2013, 03:09 AM
  4. why don't our segments align
    By danaronson in forum Server Administration Discussion
    Replies: 0
    Last Post: 11-08-2011, 05:06 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •