0003660: TsReader problems with PCR rollover

Discussion in 'Bugtracker Feed' started by MediaPortal-Bot, July 9, 2012.

  1. MediaPortal-Bot

    MediaPortal-Bot Worlds greatest bot!

    March 26, 2007
    Likes Received:
    +93 / 0
    Home Country:
    Germany Germany
    The handling of PCR rollover in TsReader is incorrect in some cases. Quote from Asselin (who raised the issue originally):<br /> <br /> "TsReader has 2 bugs in it when dealing with TS files that have PCR rollover:<br /> 1. When you start playback, MediaPortal freezes, HDD light goes solid, and after a while (could be minutes), the file starts playing back.<br /> 2. While playing, if you try to skip forward or backward, the HDD light goes solid again, and then after a while, the recording restarts from the beginning.<br /> <br /> Problem <a href="http://mantis.team-mediaportal.com/view.php?id=1">0000001</a> is a bug in TsDuration. It calculates the duration of the TS file by looking for the max PCR in the TS file before the rollover happens, and does this by a sequential (!) backwards (!!) file search. All that is unnecessary-- the code should just use a constant value (the MAX possible PCR of all binary 1s) as the value.<br /> <br /> Problem <a href="http://mantis.team-mediaportal.com/view.php?id=2">0000002</a> is a bug in TsFileSeek. Here, there's a section of code specifically for scanning a TS file with PCR rollover in it, and there's an if() statement where the logic is backwards. Fixing the if() fixes the problem, but beyond that, there's a whole other algorithm in it to deal with skipping around in TS files with PCR rollover that is unnecessary. The standard binary search algorithm works just fine, and is in fact faster."

    Continue reading...


Users Viewing Thread (Users: 0, Guests: 0)

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice
  • About The Project

    The vision of the MediaPortal project is to create a free open source media centre application, which supports all advanced media centre functions, and is accessible to all Windows users.

    In reaching this goal we are working every day to make sure our software is one of the best.


  • Support MediaPortal!

    The team works very hard to make sure the community is running the best HTPC-software. We give away MediaPortal for free but hosting and software is not for us.

    Care to support our work with a few bucks? We'd really appreciate it!