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Thread: Video aspect 720 x 304 problems

  1. #1
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    Default Video aspect 720 x 304 problems

    Hi,

    I have a number of mp4 videos in a video aspect 720 x 304 (very wide) and these are being transcoded to my Panasonic TX-P42V10B

    The problem is the video is being squahed and i cannot alter the aspect settings on the TV when streaming. I cant tell quite what is happenning, the properties of the mpeg trascode output still shows as 720 x 304 but it isnt playable on the TV without the TV squashing the image. If i play the transcode file through DivX player on my pc the same problem occurs, the image is squashed, even if i widen the screen in Divx, its still squashed with black bars each side of the video.

    Is there any solution?

    Cheers

    Steve

  2. #2
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    Hi Steve,
    you can try pre-transcoding the video to mpeg and this may force the video to 1920x1080, right-click on the file in Mezzmo and select 'Pre-transcode Files...' then check the box for your device and click 'Choose Formats...' then select mpeg and click 'OK' and then 'OK' again to begin pre-transcoding.

    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
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  3. #3
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    Hi Peter

    Thanks for suggestion, sadly no joy, still plays incorrectly, both by PC and TV, tested with PC using windows MP & DivX player. With windows MP it see's it as wide screen but the image scrolls right to left, very odd. With DivX its the same as the TV, image distorted, not black bars top and bottom to make up for being wider than screen.

    I manually converted the file using DivX Plus Converter and that streams and plays perfect, without transcode etc.

    Then converted to mpeg 2 in SD using Xilisoft HD Video Converter and that had the same problem as ffmpeg, but then tried in HD output and bingo, its perfect and streams perfect.

    Any suggestions why ffmpeg isnt converting to HD?

    Attached are the 3 video file details i mention.

    For info, i am using the Panasonic Viera (No MPEG-TS) Dennis sent me.

    Cheers

    Steve
    Attached Files Attached Files

  4. #4
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    Some devices handle mpeg files differently to other formats and will preserve the aspect ratio of mpeg video while stretching other formats to fit the screen. We can send you a device profile that will allow you to pre-transcode to avi if you send an email to support [at] conceiva [dot] com.

    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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  5. #5
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    Hi Peter

    I have tried the profile and no joy, in fact its far worse. My mkv files dont transcode now, and the tv doesnt support them, my manually created HD MPEG files start to play but are transcoded when the old profile simply streamed the file as it was not necessary. Play also stops after approx 1m. My DivX files seem to stream ok.

    My 720 x 304 mp4 file doesnt transcode either, TV just reports its not supported.

    The only positive is that the HD MPeg2 i created myself which gets transcoded and stops after 1m does at least appear to be the correct aspect. Just a sham transcoding wasnt necessary and the files that do require transcode, dont.

    I then transcoded the file manually, chose the avi format, and this works great. But does this mean that when i wish to view a video in this format i need to manually switch profile from Panasonic Viera (No MPEG-TS) to the (2011) one, manually force transcode, view then switch back?

    Steve

  6. #6
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    Hi Steve,
    we have sent you another device profile to try, this one without MPEG-TS so it should work better.

    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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  7. #7
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    Hi

    Far better results this time but still a few problems, results of a few tests are.

    1) AVI DivX file plays file.
    2) MPeg2 files play fine.
    3) My HD Mpeg2 file plays fine but is transcoded when it doesnt need to be, the other profile does not transcode. I have been deleting pre-transcoded file for each test to be 100% sure.
    4) My mp4's transcode fine.
    5) My MKV's transcode fine.
    6) My 720 x 304 mp4 transcodes to MPEG2 but is still incorrect aspect.
    7) If i manually attempt to transcode (6) to AVI i get a fail with this as a log

    ffmpeg version N-40693-gc457a29 Copyright (c) 2000-2012 the FFmpeg developers
    built on May 15 2012 12:57:14 with gcc 4.6.2
    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
    libavutil 51. 51.100 / 51. 51.100
    libavcodec 54. 21.101 / 54. 21.101
    libavformat 54. 5.100 / 54. 5.100
    libavdevice 53. 4.100 / 53. 4.100
    libavfilter 2. 73.100 / 2. 73.100
    libswscale 2. 1.100 / 2. 1.100
    libswresample 0. 11.100 / 0. 11.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\Users\Steve\Documents\My Videos\test.mp4':
    Metadata:
    major_brand : isom
    minor_version : 512
    compatible_brands: isomiso2avc1mp41
    creation_time : 2011-09-25 21:27:29
    encoder : Lavf51.12.1
    Duration: 01:38:24.31, start: 0.000000, bitrate: 2646 kb/s
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 720x304 [SAR 1:1 DAR 45:19], 2531 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc
    Metadata:
    creation_time : 2011-09-25 21:54:04
    handler_name : VideoHandler
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, 5.1, s16, 110 kb/s
    Metadata:
    creation_time : 2011-09-25 21:54:04
    handler_name : SoundHandler
    [buffer @ 03536820] w:720 h:304 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:flags=2
    [buffersink @ 048f0e40] No opaque field provided
    [yadif @ 04110f00] mode:0 parity:-1 auto_enable:0
    [libmp3lame @ 03534620] Invalid number of channels 6, must be <= 2
    Output #0, avi, to 'C:\Users\Steve\AppData\Local\Conceiva\Mezzmo\Tran scodingFiles\A27E6A5D-AF02-4974-A736-F75858D9AD4D\Video\20281-avi-mpeg4-libmp3lame.mzt':
    Metadata:
    major_brand : isom
    minor_version : 512
    compatible_brands: isomiso2avc1mp41
    creation_time : 2011-09-25 21:27:29
    encoder : Lavf51.12.1
    Stream #0:0(und): Video: mpeg4 (divx / 0x78766964), yuv420p, 720x304 [SAR 1:1 DAR 45:19], q=2-31, 200 kb/s, 90k tbn, 23.98 tbc
    Metadata:
    creation_time : 2011-09-25 21:54:04
    handler_name : VideoHandler
    Stream #0:1(und): Audio: mp3, 44100 Hz, 5.1, s16
    Metadata:
    creation_time : 2011-09-25 21:54:04
    handler_name : SoundHandler
    Stream mapping:
    Stream #0:0 -> #0:0 (h264 -> mpeg4)
    Stream #0:1 -> #0:1 (aac -> libmp3lame)
    Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height

    <MEZZMO>: Child process ended with code: 109

    The previous profile did transcode and play using the avi option.

    Steve

  8. #8
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    Hi Steve,
    glad to hear the results are better, this file failed to transcode because it has 6 channel sound where mp3 only supports 2 channels, we have updated the device profile and you can download it from the same location as before. Please let us know how it goes.

    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
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  9. #9
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    Hi Peter

    Thanks for the further update, when I now manually transcode the file it plays fine.

    So I have just a couple of questions, sorry.

    1) Could it not detect when transcoding to an AVI file is necessary due to the aspect of the original, to avoid having to manually transcode, but if it did would i have to revert to 2 channels of audio? I so ....
    2) Can it not transcode to AVI Mpeg4 & 6 Channels of audio when required rather than dropping to 2 channels, i can see these are options for ffmpeg, although have not been able to make it work?
    I know for example a video with the attributes below streams perfectly with 6 channes, my surround system linked via optical correctly detects and shows surround sound available etc:

    Stream #0:0: Video: mpeg4 (Simple Profile) (XVID / 0x44495658), yuv420p, 640x352 [SAR 1:1 DAR 20:11], 23.98 tbr, 23.98 tbn, 23.98 tbc
    Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), s16, 384 kb/s

    Also when mezzmo transcodes my mkv files with 6 channels into mpeg it keeps the 6 channels, rather than converting to avi, but again if the aspect is wide, its not correctly displayed by the tv, could it not do this but for the correct resolution in MPEG2, the current output is ...

    Complete name : C:\Users\Steve\Desktop\20487-mpeg-mpeg2video-ac3.mpg
    Format : MPEG-PS
    File size : 2.11 GiB
    Duration : 42mn 44s
    Overall bit rate mode : Variable
    Overall bit rate : 7 054 Kbps

    Video
    ID : 224 (0xE0)
    Format : MPEG Video
    Format version : Version 2
    Format profile : Main@High 1440
    Format settings, BVOP : No
    Format settings, Matrix : Default
    Format settings, GOP : N=12
    Duration : 42mn 44s
    Bit rate mode : Variable
    Bit rate : 6 466 Kbps
    Maximum bit rate : 24.0 Mbps
    Width : 1 280 pixels
    Height : 720 pixels
    Display aspect ratio : 16:9
    Frame rate : 23.976 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Compression mode : Lossy
    Bits/(Pixel*Frame) : 0.293
    Stream size : 1.93 GiB (92%)

    Audio
    ID : 189 (0xBD)-128 (0x80)
    Format : AC-3
    Format/Info : Audio Coding 3
    Mode extension : CM (complete main)
    Format settings, Endianness : Big
    Muxing mode : DVD-Video
    Duration : 42mn 44s
    Bit rate mode : Constant
    Bit rate : 448 Kbps
    Channel(s) : 6 channels
    Channel positions : Front: L C R, Side: L R, LFE
    Sampling rate : 48.0 KHz
    Bit depth : 16 bits
    Compression mode : Lossy
    Stream size : 137 MiB (6%)


    3) Why does is still transcode my HD file when the other profile (no TS) does not. The attributes are:

    Format : MPEG-PS
    File size : 5.08 GiB
    Duration : 1h 38mn
    Overall bit rate mode : Variable
    Overall bit rate : 7 388 Kbps

    Video
    ID : 224 (0xE0)
    Format : MPEG Video
    Format version : Version 2
    Format profile : Main@High
    Format settings, BVOP : No
    Format settings, Matrix : Default
    Format settings, GOP : N=12
    Duration : 1h 38mn
    Bit rate mode : Variable
    Bit rate : 7 113 Kbps
    Width : 1 920 pixels
    Height : 1 080 pixels
    Display aspect ratio : 16:9
    Frame rate : 23.976 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Compression mode : Lossy
    Bits/(Pixel*Frame) : 0.143
    Stream size : 4.89 GiB (96%)

    Audio
    ID : 192 (0xC0)
    Format : MPEG Audio
    Format version : Version 1
    Format profile : Layer 2
    Duration : 1h 38mn
    Bit rate mode : Constant
    Bit rate : 128 Kbps
    Channel(s) : 2 channels
    Sampling rate : 44.1 KHz
    Compression mode : Lossy
    Stream size : 90.1 MiB (2%)

    Cheers

    Steve
    Last edited by Roofus; 01-27-2013 at 01:53 AM.

  10. #10
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    Hi Steve,
    we have updated the device profile to add AC3 encoding for the AVI container, you can try pre-transcoding with this audio to see if you get the 6 channel sound played correctly. Download the updated profile from the same location as before.

    AVI cannot be used as a container for transcoding on the fly because of the index created at the end of the AVI file, players need to read this in order to play the file so the file cannot be streamed until transcoding is completed.

    If you can post the information of the HD mpeg2 files that are transcoded but do not need to be, we can updated the device profile to get them to play natively.

    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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