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  1. Hello everyone,

    I think I have a problem with the maximum bitrate of the videos because when I view the video on my TV in some places it freezes. I use a wifi to transmit.

    I am then trying to codify with different methods until they find a solution.

    I would like to view the bitrate produced according to the time to choose the best even in quality.

    Once I used Bitrate Viewer, but with the new codecs it doesn't work.

    I saw this graph.

    Image
    [Attachment 76994 - Click to enlarge]


    Someone recognizes what program was used?

    Alternatively, what do you suggest to use free?

    Do you also have advice on how to limit the Max Birtrate without the quality falls?

    PS: i have tryed FFBitrateViewer but it is not very precise
    Last edited by einstein1969; 13th Feb 2024 at 05:45.
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  2. Member ricardouk's Avatar
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    Are you using something like jellyfin to send the video to the TV using wifi? Have you tried disabling video conversion, just use "direct play" without video conversion? have you tried using your smartphone to play the same file over wifi?
    I love it when a plan comes together!
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  3. To analyze bitrate for a device, you need a VBV analyzer.

    Programs like bitrate viewer are not entirely suitable for this situation - because they do not take into the account the current buffer level

    It's an equation of input, consumption, and buffer . If device decoder requests large peak (e.g. some action scene) , playback might stutter if you do not have enough in the buffer - it will stutter or abort - known as a buffer underrun . But if buffer is sufficient -you get a buffered peak ,and playback is normal


    Do you also have advice on how to limit the Max Birtrate without the quality falls?
    Not really; a max bitrate (defined as the maximum rate that can be read into the buffer; not the bitrate such as read by bitrate viewer) only limits quality. It's necessary for devices , and the values for maxrate, buffer would be different for each device because of different HW specs. Multipass encodes are generally better for distributing bitrate; 1 pass (CRF or VBR) with VBV tend to have more quality issues



    There are other possible reasons for "freezing" - wifi issues, wrong encoding settings (e.g. too complex, too many b-frames, reference frames). Encode with settings compatible for your TV - look in the manual and search user forums for the device
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  4. @einstein1969:
    For bitrate constrained and blu-ray compliant x264 encoding using VBV take a look at these pages:
    http://web.archive.org/web/20211016220711/http://www.x264bluray.com/home/1080i
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  5. Originally Posted by ricardouk View Post
    Are you using something like jellyfin to send the video to the TV using wifi? Have you tried disabling video conversion, just use "direct play" without video conversion? have you tried using your smartphone to play the same file over wifi?
    no I don't use jellyfin, I'm using the software already included in window. I will do some tests on the smartphone, can you tell me which app/client I should use on the smartphone?
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  6. I forgot to say that I am re-coding the videos with Rigaya NVencC in H.265. I have not yet chosen the Method if CQP, CBR, QVBB or VBR. I have to evaluate according to my TV which is a Samsung 4K and the 2,4 and 5 GHz wifi.
    Last edited by einstein1969; 14th Feb 2024 at 11:56.
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  7. Originally Posted by poisondeathray View Post
    To analyze bitrate for a device, you need a VBV analyzer.

    Programs like bitrate viewer are not entirely suitable for this situation - because they do not take into the account the current buffer level

    It's an equation of input, consumption, and buffer . If device decoder requests large peak (e.g. some action scene) , playback might stutter if you do not have enough in the buffer - it will stutter or abort - known as a buffer underrun . But if buffer is sufficient -you get a buffered peak ,and playback is normal


    Do you also have advice on how to limit the Max Birtrate without the quality falls?
    Not really; a max bitrate (defined as the maximum rate that can be read into the buffer; not the bitrate such as read by bitrate viewer) only limits quality. It's necessary for devices , and the values for maxrate, buffer would be different for each device because of different HW specs. Multipass encodes are generally better for distributing bitrate; 1 pass (CRF or VBR) with VBV tend to have more quality issues



    There are other possible reasons for "freezing" - wifi issues, wrong encoding settings (e.g. too complex, too many b-frames, reference frames). Encode with settings compatible for your TV - look in the manual and search user forums for the device
    I read your answer but I don't have clear how to identify where the problem is and how to solve it.

    Can you show me more clearly the steps you would make to resolve the question of the stutterers?

    thank you
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  8. Originally Posted by einstein1969 View Post
    Originally Posted by ricardouk View Post
    Are you using something like jellyfin to send the video to the TV using wifi? Have you tried disabling video conversion, just use "direct play" without video conversion? have you tried using your smartphone to play the same file over wifi?
    no I don't use jellyfin, I'm using the software already included in window. I will do some tests on the smartphone, can you tell me which app/client I should use on the smartphone?
    I codified a piece of the video lossless and I saw that with some parameters it stutter in one point and others don't.

    I codified with "QP 21 and AQ 0" and remaining default parameters with Nvencc H.265 and does NOT stutter

    I codified with "QP 20" and remaining default parameters with NVENCC H.265 and does NOT stutter

    I coded with "QP 20 and AQ 0" and remaining default parameters with NVENCC H.265 and stutter (He blocks for a second and then resumes)

    I installed kodi on the smartphone and from there they see all 3 codes without stutter
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  9. I found the program that checks the bitrate: https://github.com/rigaya/checkbitrate
    But it is too stained to create the graphic.
    Create a CSV file but then you have to make the graph and the operation is not immediate.
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