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Thread: Pause, Freeze, Reload while streaming ISO files

  1. #11

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    Hello. Thanks for the responses. The Dell XPS 730x has an Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz 2.67GHz. I tried using HandBrake and Leawo Blu-Ray Ripper to convert the BD/DVD ISO file to one of the MP4 formats to avoid transcoding. Every one I tried compressed the video so much the resulting video quality was very poor. I tried 2 different ISO files:

    1) File 1 BD ISO Size=43GB, M4V Size=11GB
    2) File 2 DVD ISO Size=6.2GB, MKV Size=3GB, TS Size=3.4GB

    I would like to find a converter that can produce the same quality as the Mezzmo pre-transcoded files. They have excellent quality. The best I could find was ripping the ISO file to MPEG-2. This has excellent HD and Mezzmo can transcode them on the fly.

    I ran a test with 2 BD MPG files streaming simultaneously to 2 different Roku boxes on 2 TVs. File 1 MPG File Size=23GB, Transcoded at 82fps, File 2 MPG File Size=20GB transcoded at 71fps. The CPU usage was 75%, ffmpeg.exe 1=38%, ffmpeg.exe 2=37%. The streaming was excellent for both TVs. The Networking usage was less than 10%. As a comparison, the ISO file transcodes at 11fps and has all of the problems described.

    Of course the optimum would be to avoid transcoding all together. I get a warning message when the temporary transcoding folder exceeds 70%, so I would have to be deleting all files periodically, or I could move the temporary folder to another NAS if the 1Gig network is fast enough to stream from.

    Does HandBrake have a video format option that matches Mezzmo's? Is there a converter that uses the ffmpeg.exe transcoding module?

  2. #12
    Join Date
    Jun 2012
    Posts
    352

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    DVDFab will do what you want to convert with native quality. I've been using it for years. I rip everything to M2TS format, which is the native Blu-Ray format. It has a passthrough option which keeps the source bitrate but can also do MKV, MP4, HEVC and other formats. It looks like your processor is old enough that Intel IQS support isn't an option. for HW encoding for on the fly transcoding improvement.
    Last edited by jbinkley60; 12-16-2018 at 08:20 PM.

  3. #13
    Join Date
    Sep 2009
    Posts
    1,866

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    Both ISO files will have the same output format for the Roku, the difference will be the input format and the decoding speed. Decoding the mpeg content of the DVD is slower and may not utilize hardware decoding which can speed up transcoding. In Handbrake you can drag the Constant Quality slider to the right to increase quality and set the H.264 level to 5.2 to increase quality.

    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

  4. #14

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    Hi.

    The HandBrake tests were all executed with the Constant Quality slider all the way to the right. None of the output formats had acceotable video quality. My standard for video quality is the streaming video should be equal or greater than the video quality played on the TV by the BD/DVD player.

    I downloaded the trial version of DVDFab 64 bit. I ripped a 2hr, 6min 22GB Blu-ray disk to a M2TS file. The conversion took 1hr, 33min running at 31.96 fps. The M2TS file size=5.8GB. The CPU was 98%, mem=48%, (5.84GB/12GB of mem).

    During streaming, the video quality was excellent, however, the M2TS file required transcoding and the on the fly transcoding was slow, 22fps. The streaming would play for about 1min then stop, "Loading" for about 30secs, and repeat. Not acceptable.

    I then used Leawo Blu-Ray Ripper to convert the BD to MPEG-2. The conversion took 1hr, 32min. The File size=23GB.
    During streaming, the video quality is excellent, the MPEG-2 file requires transcoding. It transcodes on the fly at 102fps, CPU=73%, FFmpeg 1=39%, FFmpeg 2=34%, network was 350Mbps. Streaming is acceptable. So far, this is the only way I have been successful at streaming Blu-ray video.

    The Dell XPS 730x contains 4 HD bays. Bay 1 is a 2TB WD Red system boot C: drive. It has a write speed of 105 MBps. The other three HD Bays each contain a 2TB Hitachi Deskstar. They are striped as a 6TB RAID 0 device with a disk R/W speed of 425MBps. I have located the Mezzmo Temporary Transcoding Folder on this drive, Disk D:.

    So far, the DVD ISO files are streaming OK. Most of the files stream quite well, a few for some reason stream jerky. They are fairly old files I created 10+ years ago when I was learning about creating HD ISO files. I will probably be recreating them over time.

    I am still looking for that conversion utility that can create the correct format for the Roku boxes that doesn't require transcoding.

  5. #15
    Join Date
    Sep 2009
    Posts
    1,866

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    The Roku boxes do not support mpeg or mpegts so mp4 or mkv are the only containers you can use. It may be best just to pre-transcode the files in Mezzmo and set the size of the Transcoding folder in Transcoding Settings to 2Tb. We could possibly add a feature to allow selecting multiple files in Mezzmo and saving the pre-transcoded files to another location on disk which would make it easier to copy the transcoded files to the NAS so that they don't get deleted when transcoding space runs 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

  6. #16

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    Yes, it would appear that the only conversion utility I have come across that can effectively stream to the Roku boxes is the FFmpeg utility Mezzmo uses to transcode the video. I've convinced myself that pre-transcoding is the way to go. In addition to the enhancements to Mezzmo Media Server you suggested, adding a stop time for pre-transcoding would enable us to establish a pre-transcoding window, say midnight to 10am, so that the pre-transcoding would not conflict during the time when we would want to stream a video. If a video we want to stream had not yet been transcoded, there would be enough system resources available to transcode on the fly. I am thinking that the pre-transcoding of our 550+ titles would take days. This population is expected to grow to over 750 titles in the next few months.

    In browsing through the Mezzmo temp transcodeing folder, it is hard to determine which files are associated with what video file. The grouping feature you described would be very beneficial here.

  7. #17
    Join Date
    Sep 2009
    Posts
    1,866

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    Pre-transcoding jobs are already given a lower priority by Mezzmo so that if the server requires to transcode a file on the fly then pre-transcoding jobs are paused and the transcoding by the server is performed. The naming of files in the transcoding folder is not in an easy to read format so you should use the 'Save As...' button on the Transcoding tab of the file properties to save transcoded files, this would be a slow process for 550+ files so hopefully we can improve this.

    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

  8. #18
    Join Date
    Dec 2018
    Posts
    1

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    How slow are we talking here? How much time would it need per single file, Peter?

  9. #19
    Join Date
    Sep 2009
    Posts
    1,866

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    You would need to go to the properties of each file then on the Transcoding tab click 'Save As...' and wait while the file is copied then move to the next file and do the same so because it is a manual process it will take time.

    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. #20

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    I went ahead and started pre-transcoding. It has been running now for 3 days, it started with 704 files queued for pre-transcoding. After 3 days, Mezzmo has completed 44 files for a rate of 14.67 files/day. This will require 47 days to complete.

    I attempted to use your suggestion to select a video file and select the Transcoding tab to ...save as the pre-transcoded file. What happened is:
    1) I right-clicked on the metadata icon and selcted "Properties".
    2) The General tab opens with the metadata displayed.
    3) I selected the "Transcoding" tab.
    4) The Transcoding tab opens with a blank display.
    5) I select "Get Online Video Metadata" button.
    6) I select "Search".
    7) The metadata is displayed.
    8) I click the "OK" button.
    9) 3 Roku Streaming Player entries are displayed.
    10) I select one of the boxe's +hls(+h264, +aac) entry
    11) the "Save As" button highlights.
    12) The Save As selection screen is displayed
    13) I enter the same NAS folder that contains the ISO file, the filename is preselected as "vts_01_8m3u8" with "Save as Type"="All Files (*.*)".
    14) I select the "Save" button.
    15) After about 2min, Mezzmo Displays "File Copied Successfully"
    16) I clicked "OK" and I clicked "OK" to close the "Transcoding" tab.
    17) I select the Video tree entry, and it shows the ISO file and 606 Transcoded files. When I dragged the "scroll down bar" all the way to the bottom, Mezzmo crashed.
    Windows displayed, the "Program Compatabilty Assistant" window:
    "Windows detected that this program did not run correctly".
    "To try and fix the problem, Windows has applied compatability settings to this program. Windows will use these settings the next time you run the program".
    Mezzmo displayed an error box: "Mezzmo has encountered a problem and needs to close. We are sorry for the inconvenience. A crash dump file has been created and this may help the Mezzmo developers diagnose the problem that just occurred.
    Please send the Crash Dump file to 'support@conceiva.com'. Also describe what you were doing when this error occurred.
    Click 'Go To Folder' to locate the Crash Dump ZIP file on your computer."
    18) I clicked "Close" to close the Windows "Program Compatability Assistant".
    19) I used "File Exporer" to browse the video NAS folder.
    20) Mezzmo placed 607 files into the folder. The filenames are:
    "vts_01_6-000-10.ts"
    "vts_01_6-001-10.ts"
    .
    .
    .
    "vts_01_6-605-10.ts"
    21) I restarted Mezzmo Media Server
    22) I turned on the TV and Roku selected the film folder from the library.
    23) Roku displayed 2 folders, Docs, (where I locate the poster, label and background images), and Video.
    24) I select the Video folder and 607 files are displayed, (the ISO file and 606 transcoded files). The transcoded files are all showing 9 or 10 secs.
    25) I select the 1st transcoded file, the metadata panel displays, (with no metadata), and I select "Play".
    26) The file plays for 9 secs and returns to the metadata panel with the next transcoded file as the file ready to be played.

    Questions:

    1) How do we see what files have been pre-transcoded?
    2) The Transcoding Panel status bar indicates that 660 files queued, 2 files failed. Is there a log to browse to find the failures?
    3) What is the value of saving the pre-transcoded file clips to another folder?
    4) Did I skip a step that would have placed a single file in the destination folder?
    5) What can we do with these transcoded file clips?
    6) If a video file is transcoded on the fly is the transcoded file retained?

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