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Thread: Occasional Audio Sync Issues Sony KDL-40EX503 TV

  1. #1
    Join Date
    May 2012
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    22

    Thumbs up Occasional Audio Sync Issues Sony KDL-40EX503 TV

    I have Mezzmo installed on a PC which has a 3GHZ quad core intel processor 8 gig of ram running windows 7 x64, wired into a 10/100 network and also a Sony Bravia KDL-40EX503 TV which again is wired into the network. The network has a number of other devices, including a sony PS3 (wired) and a netgear EVA 2000 media player (wired) In addition the network also supports two 802.11n devices which are an apple ipad and iphone.

    The Sony TV is supports .VOB and .m2ts and .ts video file but sadly there is no .avi support. I have a number of .avi movies and so mezzmo transcodes these files using the SonyBraviaKDL.prf profile in C:\Users\All Users\Conceiva\Mezzmo\DeviceProfiles. Sometimes I pre-transcode the files and other times I transcode on the fly. Transcoding is now set to its default settings though I have tried lowering the CPU priority in the past.

    On occasions (usually when I am showing friends/family how good mezzmo is!!) I play an .avi movie and after a short while the audio begins to move out of sync with the video. If I stop the movie and restart it the audio sync is corrected, but after a short time it slips behind again.

    Now on other occasions I can go to the exact same movie and it runs fine.. no sync issues at all. I thought it maybe something running on the PC such as 'defrag' or virus scanner etc but as far as I can see nothing 'additional' appears to be running at the time the audio sync issues occur so thought the problem maybe to do with the configuration of ffmpeg and the assigned transcoding profile.

    I am new to mezzmo and ffmpeg, but have read in this forum about adding -async to the SonyBraviaKDL.prf profile under the section/tag <ffmpegadditional> but having tried that in each mention of the tag in the profile I simply then get "file not found" on my TV, albeit I can see and browse to the .avi movie itself. I have now reverted back to the original SonyBraviaKDL.prf profile.

    I was hoping the -async option would work but that has not fixed it for me.

    My Sony PS3 does support the .avi format and therefore no transcoding is necessary and mezzmo streams all the .avi movie files perfectly, in fact I have never encountered any problems with the PS3 and the audio sync etc has never been an issue, same goes for the EVA 2000 media player.

    I just thought I would ask to see if anyone else has experienced the same or similar issue and to ask for some support or advice as to what I can try next.

    The virus firewall software running on the PC is Kaspersky Internet Security 12 - Note I have not disabled this at the moment as I am not sure that this is the cause of the sync issue.

    This is my first post, so thanks in advance

  2. #2
    Join Date
    Jun 2011
    Location
    South Africa
    Posts
    108

    Default

    I have a Sony KDL-32EX600 TV and have also experienced the Audio Sync issues. Stopping and restarting has resolved the issue most of the time. I have assumed that this is aggravated when you FFWD or RWND, but have not been able to confirm this though.

    Mark

  3. #3
    Join Date
    May 2012
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    22

    Default Ffwd & rwnd

    Quote Originally Posted by mezzmo@mvg.za.net View Post
    I have a Sony KDL-32EX600 TV and have also experienced the Audio Sync issues. Stopping and restarting has resolved the issue most of the time. I have assumed that this is aggravated when you FFWD or RWND, but have not been able to confirm this though.

    Mark
    Yes FFWD or RWND does indeed aggravate the sync issue. Perhaps it is an issue with the KDL "EX" series- I guess if this cannot be resolved, I may have to convert the .avi files to mpeg2 format (.ts or .vob etc.) but not only is that a long slow process, but the output files are often 2-3 times the size of the .avi file. Hopefully mezzmo or someone here can solve the issue.

  4. #4
    Join Date
    Nov 2007
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    Default

    Thanks for the detailed post. It appears that the Sony Bravia TV's firmware is having problems when playing these files and it seems that using FF/REW exacerbates the problem in the firmware even further. It will not be related to your computer setup, home network setup or software running on your PC as they all appear fine.

    We are about to release Mezzmo v2.6 this week and this includes several tweaks to the Sony Bravia device profiles and includes the latest build of ffmpeg.exe. This may help resolve your problem since the transcoded files may be encoded in such a way that the Sony Bravia's firmware may cope better. Once we release Mezzmo v2.6 and you try it, please do post back and let us know.

    Mezzmo Android: Install it on your tablet, smartphone, Android TV or Amazon Fire to browse and stream files from your Mezzmo library to all your devices. Full details at http://www.conceiva.com/products/mez...mo_android.asp
    Mezzmo for Kodi Add-on: Install it into Kodi to stream files from your Mezzmo library directly in Kodi. Full details at http://www.mezzmo.com/wiki/doku.php?...odi_user_guide
    Mezzmo for Roku App: Install it onto your Roku to stream files from your Mezzmo library. Full details at http://www.mezzmo.com/wiki/doku.php?...oku_user_guide
    Wiki: User Guides & Reference Manual at http://www.mezzmo.com/wiki
    Facebook: http://www.facebook.com/Mezzmo.DLNA.Server
    Twitter: https://twitter.com/conceiva_mezzmo
    Web: http://www.mezzmo.com

  5. #5
    Join Date
    May 2012
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    Default Thanks for the support

    Quote Originally Posted by Paul View Post
    Thanks for the detailed post. It appears that the Sony Bravia TV's firmware is having problems when playing these files and it seems that using FF/REW exacerbates the problem in the firmware even further. It will not be related to your computer setup, home network setup or software running on your PC as they all appear fine.

    We are about to release Mezzmo v2.6 this week and this includes several tweaks to the Sony Bravia device profiles and includes the latest build of ffmpeg.exe. This may help resolve your problem since the transcoded files may be encoded in such a way that the Sony Bravia's firmware may cope better. Once we release Mezzmo v2.6 and you try it, please do post back and let us know.
    Thanks Paul, I will install the update when released and report back to let you know the outcome.

  6. #6
    Join Date
    Nov 2007
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    Default

    Mezzmo v2.6 has been released today. Please try it with your Sony Bravia and let us know if the problem persists.

    Mezzmo Android: Install it on your tablet, smartphone, Android TV or Amazon Fire to browse and stream files from your Mezzmo library to all your devices. Full details at http://www.conceiva.com/products/mez...mo_android.asp
    Mezzmo for Kodi Add-on: Install it into Kodi to stream files from your Mezzmo library directly in Kodi. Full details at http://www.mezzmo.com/wiki/doku.php?...odi_user_guide
    Mezzmo for Roku App: Install it onto your Roku to stream files from your Mezzmo library. Full details at http://www.mezzmo.com/wiki/doku.php?...oku_user_guide
    Wiki: User Guides & Reference Manual at http://www.mezzmo.com/wiki
    Facebook: http://www.facebook.com/Mezzmo.DLNA.Server
    Twitter: https://twitter.com/conceiva_mezzmo
    Web: http://www.mezzmo.com

  7. #7
    Join Date
    Jul 2012
    Posts
    4

    Default sound synchronisation

    Quote Originally Posted by Paul View Post
    Thanks for the detailed post. It appears that the Sony Bravia TV's firmware is having problems when playing these files and it seems that using FF/REW exacerbates the problem in the firmware even further. It will not be related to your computer setup, home network setup or software running on your PC as they all appear fine.

    We are about to release Mezzmo v2.6 this week and this includes several tweaks to the Sony Bravia device profiles and includes the latest build of ffmpeg.exe. This may help resolve your problem since the transcoded files may be encoded in such a way that the Sony Bravia's firmware may cope better. Once we release Mezzmo v2.6 and you try it, please do post back and let us know.
    I'm now running a fully registered Mezzmo v2.6. on an Intel Core 2 Duo CPU with 4.00GB RAM.

    I am servering to a SONY Bravia KDL

    I always Pre-transcode - Transcode CPU priority ub Normal

    I take the default Pre-transcode setting, which for an AVI file are :-

    File Format = mpegts
    Video Channel = h264
    Audio Channels = ac3

    I'm still getting sound sync problems. Stopping, restarting does seem to temporaraly fix ....but not for long. Also seems to happen at scene changes?

    Can anyone help?

  8. #8
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    Default

    Quote Originally Posted by samwise View Post
    Can anyone help?
    Contact us at support [at] conceiva [dot] com and we'll supply you with a tweaked Sony KDL device profile to try.

    Mezzmo Android: Install it on your tablet, smartphone, Android TV or Amazon Fire to browse and stream files from your Mezzmo library to all your devices. Full details at http://www.conceiva.com/products/mez...mo_android.asp
    Mezzmo for Kodi Add-on: Install it into Kodi to stream files from your Mezzmo library directly in Kodi. Full details at http://www.mezzmo.com/wiki/doku.php?...odi_user_guide
    Mezzmo for Roku App: Install it onto your Roku to stream files from your Mezzmo library. Full details at http://www.mezzmo.com/wiki/doku.php?...oku_user_guide
    Wiki: User Guides & Reference Manual at http://www.mezzmo.com/wiki
    Facebook: http://www.facebook.com/Mezzmo.DLNA.Server
    Twitter: https://twitter.com/conceiva_mezzmo
    Web: http://www.mezzmo.com

  9. #9
    Join Date
    Sep 2012
    Posts
    2

    Default Exact same problem

    Quote Originally Posted by samwise View Post
    I'm now running a fully registered Mezzmo v2.6. on an Intel Core 2 Duo CPU with 4.00GB RAM.

    I am servering to a SONY Bravia KDL

    I always Pre-transcode - Transcode CPU priority ub Normal

    I take the default Pre-transcode setting, which for an AVI file are :-

    File Format = mpegts
    Video Channel = h264
    Audio Channels = ac3

    I'm still getting sound sync problems. Stopping, restarting does seem to temporaraly fix ....but not for long. Also seems to happen at scene changes?

    Can anyone help?

    Any progress made on this? I have the exact same problem with the most current version. Its not on all my videos, the lower quality stuff seems to be fine. Everything I have is pre-transcoded. I also noticed that if I "save as" my pretranscoded files as a mpeg I can play on the computer, but the Bravia cannot play it.

  10. #10
    Join Date
    Nov 2007
    Location
    Melbourne, Australia
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    11,642

    Default

    Hi beowulf,

    Contact us at support [at] conceiva [dot] com for a patch to try. In your email, please include the FFmpeg information on one of the files that has the problem you mention. To do this, right-click on the file in Mezzmo and click 'Get FFmpeg Information'.

    Mezzmo Android: Install it on your tablet, smartphone, Android TV or Amazon Fire to browse and stream files from your Mezzmo library to all your devices. Full details at http://www.conceiva.com/products/mez...mo_android.asp
    Mezzmo for Kodi Add-on: Install it into Kodi to stream files from your Mezzmo library directly in Kodi. Full details at http://www.mezzmo.com/wiki/doku.php?...odi_user_guide
    Mezzmo for Roku App: Install it onto your Roku to stream files from your Mezzmo library. Full details at http://www.mezzmo.com/wiki/doku.php?...oku_user_guide
    Wiki: User Guides & Reference Manual at http://www.mezzmo.com/wiki
    Facebook: http://www.facebook.com/Mezzmo.DLNA.Server
    Twitter: https://twitter.com/conceiva_mezzmo
    Web: http://www.mezzmo.com

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