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Thread: Transcoding and quality off the transcoded file

  1. #1

    Smile Transcoding and quality off the transcoded file

    Hi all,

    I will make use of the new subtitle feature, and hardcode subtitles to an MKV file, since my telly doesn't support external or embedded subtitles for MKV files.

    Thus, need to transcode the file.

    But how do i choose the transcoding quality (or keep the quality off the original file "untouched" in the proces ) ? Because the transcoded file is in a real bad quality, totally unwatchable..

    Tried "Force full Transcode of all channels (no remuxing)" but still very bad quality.

    Would appreciate someone pointing me in the right direction.

    TIA

  2. #2
    Join Date
    Nov 2007
    Location
    Melbourne, Australia
    Posts
    11,642

    Default

    The problem may be the wrong device profile assigned to your device. Please tell us the device you are streaming to (incl. model number) and the device profile that is assigned to your device in the Media Devices dialog in Mezzmo. And, also post the FFmpeg information on the video file that you are streaming. Right-click on the video 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
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  3. #3

    Default

    Hi Paul,

    My tv is a Panasonic Viera VT20, and i am using the device profile "Panasonic Viera (2011 models)".

    Furthermore, under "Device settings" for this profile, under the tab "Performance" i have chosen "Maximum video size" which corresponds to 1920 x 1080, and "Video bitrate" is set to "Best quality".

    FFmpeg information:

    ---------

    ffmpeg version N-46003-gfa48da1 Copyright (c) 2000-2012 the FFmpeg developers
    built on Oct 25 2012 12:37:27 with gcc 4.6.2 (GCC)
    configuration: --enable-memalign-hack --arch=x86 --target-os=mingw32 --cross-prefix=i686-w64-mingw32- --enable-static --disable-shared --enable-zlib --disable-postproc --prefix=/home/peter/ffmpeg/build/gpl --enable-libmp3lame --enable-libx264 --enable-gpl --extra-libs='-lx264 -lpthread' --enable-runtime-cpudetect --extra-cflags=-I/home/peter/cc/include --extra-ldflags=-L/home/peter/cc/lib --pkg-config=pkg-config --disable-w32threads --enable-zlib
    libavutil 52. 0.100 / 52. 0.100
    libavcodec 54. 69.100 / 54. 69.100
    libavformat 54. 34.100 / 54. 34.100
    libavdevice 54. 3.100 / 54. 3.100
    libavfilter 3. 20.105 / 3. 20.105
    libswscale 2. 1.101 / 2. 1.101
    libswresample 0. 16.100 / 0. 16.100
    Input #0, matroska,webm, from 'C:\edited_path\edited_title.mkv':
    Duration: 01:58:53.05, start: 0.000000, bitrate: 6579 kb/s
    Chapter #0.0: start 0.000000, end 447.447000
    Metadata:
    title : 00:00:00.000
    Chapter #0.1: start 447.447000, end 811.686000
    Metadata:
    title : 00:07:27.447
    Chapter #0.2: start 811.686000, end 1282.490000
    Metadata:
    title : 00:13:31.686
    Chapter #0.3: start 1282.490000, end 1608.106000
    Metadata:
    title : 00:21:22.490
    Chapter #0.4: start 1608.106000, end 1911.201000
    Metadata:
    title : 00:26:48.106
    Chapter #0.5: start 1911.201000, end 2488.403000
    Metadata:
    title : 00:31:51.201
    Chapter #0.6: start 2488.403000, end 2973.429000
    Metadata:
    title : 00:41:28.403
    Chapter #0.7: start 2973.429000, end 3250.414000
    Metadata:
    title : 00:49:33.429
    Chapter #0.8: start 3250.414000, end 3635.006000
    Metadata:
    title : 00:54:10.414
    Chapter #0.9: start 3635.006000, end 4089.919000
    Metadata:
    title : 01:00:35.006
    Chapter #0.10: start 4089.919000, end 4523.352000
    Metadata:
    title : 01:08:09.919
    Chapter #0.11: start 4523.352000, end 5037.741000
    Metadata:
    title : 01:15:23.352
    Chapter #0.12: start 5037.741000, end 5665.869000
    Metadata:
    title : 01:23:57.741
    Chapter #0.13: start 5665.869000, end 6064.433000
    Metadata:
    title : 01:34:25.869
    Chapter #0.14: start 6064.433000, end 6389.383000
    Metadata:
    title : 01:41:04.433
    Chapter #0.15: start 6389.383000, end 7133.054000
    Metadata:
    title : 01:46:29.383
    Stream #0:0(eng): Video: h264 (High), yuv420p, 1280x544, SAR 1:1 DAR 40:17, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Stream #0:1(eng): Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 1536 kb/s (default)
    Stream #0:2(eng): Subtitle: subrip
    Stream #0:3(eng): Subtitle: subrip (default) (forced)
    Metadata:
    title : Forced
    Stream #0:4(eng): Subtitle: subrip
    At least one output file must be specified

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


    ---> DB Level Info: 41, 100
    ---> Frame rate: 23,98
    ---> Aspect ratio: 40:17

    ----------

    Is there a description regarding the new subtitle hardcoding feature by the way, so i could read up on the function ? Unaware if you have to pre-transcode a file for making use of the feauture, or if you can also make use of the feauture when transcoding "on the fly".

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