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Thread: Panasonic Viera G20 videos stuttering & not recognised

  1. #1
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    Question Panasonic Viera G20 videos stuttering & not recognised

    I have the latest Mezzmo updated on our new WHS 2011 setup (4gb RAM). It links to the Xbox & Panansonic Viera TV happily enough but the videos run for between a second or two to a minute or so before freezing or stuttering along. (Some videos say they are not recognised, but not always, even if the preview window works okay.) The network is all wired gigabit from the server & BT Home Hub router to the Xbox & TV.

    I've searched here and changed the ffmpeg to the 64bit version - which seemed to help a bit - but has not cured the problem.

    FFmpeg details below of the last video I tried:

    ffmpeg version N-50460-g393dcbf Copyright (c) 2000-2013 the FFmpeg developers
    built on Jun 27 2013 17:20:20 with gcc 4.6.2 (GCC)
    configuration: --enable-memalign-hack --arch=x86_64 --target-os=mingw32 --cross-prefix=x86_64-w64-mingw32- --enable-static --disable-shared --enable-zlib --disable-postproc --prefix=/home/peter/ffmpeg/build/gpl64 --enable-libmp3lame --enable-libx264 --enable-gpl --extra-libs='-lx264 -lpthread' --enable-runtime-cpudetect --extra-cflags=-I/home/peter/cc64/include --extra-ldflags=-L/home/peter/cc64/lib --pkg-config=pkg-config --disable-w32threads --enable-zlib
    libavutil 52. 17.103 / 52. 17.103
    libavcodec 54. 92.100 / 54. 92.100
    libavformat 54. 63.102 / 54. 63.102
    libavdevice 54. 3.103 / 54. 3.103
    libavfilter 3. 41.100 / 3. 41.100
    libswscale 2. 2.100 / 2. 2.100
    libswresample 0. 17.102 / 0. 17.102


    ---> DB Level Info: 40, 100
    ---> Frame rate: 25.00
    ---> Aspect ratio: 16:9 PAR=1:1

    Any help is much appreicated.

    Cheers,

    Chris

    Sorry, forgot to say that the device profiles are 'Xbox' & 'Panasonic (2011 models)' respectively, set to gigabit speed. I've also seen - and got plenty confused by - 'transcoding' and 'pre-transcoding'. I'm not clear on why the second may be preferable.
    Last edited by ChrisOfTheOT; 08-28-2013 at 09:04 PM. Reason: Added profile details, etc.

  2. #2
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    Hi Chris,

    Your FFmpeg information is missing a bunch of text in the middle. Please post the FFmpeg information again. Right-click on the video in Mezzmo and click 'Get FFmpeg Information'.

    Without seeing the FFmpeg information, I'll guess one possible reason for the stuttering. Mezzmo server may be transcoding your video on-the-fly while they are streaming to your TV or Xbox. It is doing thsi since your video is not compatible with your TV or Xbox and it transcodes (converts) it to a supported format. If transcoding is not fast enough on your computer, then your TV or Xbox will not have enough video data delivered to it by Mezzmo server so it can start to stutter. The way to check if this is happening is to play the video on your TV or Xbox and when it starts stuttering, go back to Mezzmo and check the Transcoding pane. If the video is listed there and is marked red, then we know that transcoding is too slow for real time playback. To fix this, you can upgrade your computer to a higher spec or you can pre-transcode your stuttering videos before streaming them. Pre-transcoding means you transcode them before streaming them so that when you want to play them, they are ready to be streamed and no transcoding is required. This fixes the "transcoding on-the-fly too slow" issue that you may have. To pre-transcode a file, check this FAQ - http://forum.conceiva.com/showthread...nscoding-Files.

    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
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  3. #3
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    Ooops - not sure what happened to the ffmpeg information. Here's the full Monty:

    ffmpeg version N-50460-g393dcbf Copyright (c) 2000-2013 the FFmpeg developers
    built on Jun 27 2013 17:20:20 with gcc 4.6.2 (GCC)
    configuration: --enable-memalign-hack --arch=x86_64 --target-os=mingw32 --cross-prefix=x86_64-w64-mingw32- --enable-static --disable-shared --enable-zlib --disable-postproc --prefix=/home/peter/ffmpeg/build/gpl64 --enable-libmp3lame --enable-libx264 --enable-gpl --extra-libs='-lx264 -lpthread' --enable-runtime-cpudetect --extra-cflags=-I/home/peter/cc64/include --extra-ldflags=-L/home/peter/cc64/lib --pkg-config=pkg-config --disable-w32threads --enable-zlib
    libavutil 52. 17.103 / 52. 17.103
    libavcodec 54. 92.100 / 54. 92.100
    libavformat 54. 63.102 / 54. 63.102
    libavdevice 54. 3.103 / 54. 3.103
    libavfilter 3. 41.100 / 3. 41.100
    libswscale 2. 2.100 / 2. 2.100
    libswresample 0. 17.102 / 0. 17.102
    Input #0, mpegts, from '\\SERVER\Videos\Panasonic SD60 HD Videos\Animals In The Garden\Rabbit3 28.7.13.MTS':
    Duration: 00:01:23.52, start: 0.502333, bitrate: 16496 kb/s
    Program 1
    No Program
    Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 50 tbr, 90k tbn, 50 tbc
    Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 256 kb/s
    Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
    At least one output file must be specified

    <MEZZMO>: Child process ended with code: 109, ExitCode=1


    ---> DB Level Info: 40, 100
    ---> Frame rate: 25.00
    ---> Aspect ratio: 16:9 PAR=1:1

    Sorry!

    Chris

  4. #4
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    Thanks, Chris. The video has quite a high bitrate (16 Mbps). Stuttering with high bitrate videos is quite common for two reasons: (i) if the video is streamed directly to your device by Mezzmo without any transcoding, the device's firmware may struggle to decode and play the video in real time due to its high bitrate, or (ii) if Mezzmo is transcoding the video on-the-fly, your computer may not be powerful enough to transcode such a high bitrate video for real time playback (as mentioned in my earlier post you can check this in the Transcoding pane).

    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
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  5. #5
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    Quote Originally Posted by Paul View Post
    ... Mezzmo server may be transcoding your video on-the-fly while they are streaming to your TV or Xbox. It is doing thsi since your video is not compatible with your TV or Xbox and it transcodes (converts) it to a supported format. If transcoding is not fast enough on your computer, then your TV or Xbox will not have enough video data delivered to it by Mezzmo server so it can start to stutter. The way to check if this is happening is to play the video on your TV or Xbox and when it starts stuttering, go back to Mezzmo and check the Transcoding pane. If the video is listed there and is marked red, then we know that transcoding is too slow for real time playback. To fix this, you can upgrade your computer to a higher spec or you can pre-transcode your stuttering videos before streaming them. Pre-transcoding means you transcode them before streaming them so that when you want to play them, they are ready to be streamed and no transcoding is required. This fixes the "transcoding on-the-fly too slow" issue that you may have. To pre-transcode a file, check this FAQ - http://forum.conceiva.com/showthread...nscoding-Files.
    Thanks for your help Paul (again).

    I hope the above ffmpeg info is informative. I looked at another video in the Transcoding pane and it is indeed marked in red 'Too slow'. Most video files are Panasonic MTS (or MT2S) which should play natively on our Panasonic Viera (but, apparently, only if input through an SD card ). However, trancoding worked okay in an earlier Mezzmo with WHS v1. The server is basically the same now (except more RAM & new SATA I and II controller cards) - would any of that slow things down?

    I will try this 'Pre-tanscoding' option. Will it affect video quality? (I'm guessing it's just a pre-emptive measure - doing the same job but 'before hand', so to speak?) Also, we have several hundred GB worth of videos; will the transcoding folder have to be equally huge to accomodate them (assuming we watch them often)?

    I'll try pre-transcoding later and give you a shout. Once again, many, many thanks for your help Paul - & the wonderful Mezzmo too.

    Cheers,

    Chris

  6. #6
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    Quote Originally Posted by Paul View Post
    Thanks, Chris. The video has quite a high bitrate (16 Mbps). Stuttering with high bitrate videos is quite common for two reasons: (i) if the video is streamed directly to your device by Mezzmo without any transcoding, the device's firmware may struggle to decode and play the video in real time due to its high bitrate, or (ii) if Mezzmo is transcoding the video on-the-fly, your computer may not be powerful enough to transcode such a high bitrate video for real time playback (as mentioned in my earlier post you can check this in the Transcoding pane).
    Streuth, Sport! It must be stupid-o-clock in Oz and you're still working - I'm stunned & humbled (& very grateful)...

    I'm hoping it's not a Panasonic firmware issue as, from memory, updating TV firmware depends on Panasonic broadcasting it which only happens for short periods. I'll have to Google it.

    If the pre-transcoding works, we'll be okay. I'll try some other videos too - avi, mpeg, etc. - and see if that makes any difference.

    Once again, many thanks Paul.

    Cheers,

    Chris

  7. #7
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    I think pre-transcoding will help. If you still get stuttering after pre-transcoding a file, one useful tip is to lower the video bitrate slider setting in the Device Settings dialog (Performance page) for your device. Go to the Media Devices dialog and edit your device to see this setting. The video bitrate slider setting will lower the bitrate when transcoding so that your device can handle the transcoded video. After changing the slider, you will need to pre-transcode the file to see the effect.

    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
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  8. #8
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    I'll try the bitrate adjustment next (pre-transcoding is currently underway).

    I had thought the pre-transcoding process would convert MTS files to whatever the Panasonic/Xbox can play natively (mpeg, or whatever). However, the options seemed to be 'mpegts' to 'h264'. Also, although I slected the folder with the Panasonic videos in it, I notice that Mezzmo has actually started with other folders, and not MTS/MT2S files, but AVIs... Clearly, I have no idea how this works!

    Anyway, I'll let Mezzmo do its stuff and then report back.

    Muchness gratitude & profound thanks again Paul,

    Cheers,

    Chris

    P.S. I just checked - it's early evening in Melbourne. Not as late as I thought but still making for a long day for you, Paul...

  9. #9
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    Hi Chris,

    Let us know if you have any problems, and we'll help out.

    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

  10. #10
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    It turns out there are over a thousand files that Mezzmo wants to pre-transcode and it seems to take several minutes per file. While Mezzmo is doing the transcoding, it's hogging so much system oomph that the backups, etc., are failing. (I can temporarily disable the transcoding process though that's not very convenient). I've noticed an option to reduce processor CPU priority but I fear this will then require even more time to finish?!

    I had not anticipated this huge work load - nor the (presumably) equally large amount of disk space needed. If I attach an old hard drive dedicated to Mezzmo specifically (moving the temporary & transcoding folders there) will it help? Currently the transcoding is being done on the 'D' drive, the same drive the videos are stored in (my 'C' drive is only 100GB).

    I've left it running for nearly 24 hours and there are still 908 files queued for transcoding! The transcoding rates vary from 25 fps to just 2 fps. At this rate, it will take 10 days (!) to complete... And I haven't even been able to test the results yet. Is this normally what happens when pre-transcoding?

    I'm not sure what to do now as (effectively) disabling the server for 10 days is not ideal.

    Thanks again for your help Paul,

    Cheers,

    Chris

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