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  1. Member
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    I want to take a little noise out of a movie.
    What is the maximum configuration I can use without losing quality?
    Image
    [Attachment 58617 - Click to enlarge]



    Essa ť a imagem do filme - Image
    [Attachment 58618 - Click to enlarge]
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  2. I use hqdn3d(2.0)

    adm.addVideoFilter("MplayerDenoise3DHQ", "mode=4", "luma_spatial=2.0", "chroma_spatial=1.5", "luma_temporal=3.0", "chroma_temporal=2.25")
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  3. Member
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    Originally Posted by butterw View Post
    I use hqdn3d(2.0)

    adm.addVideoFilter("MplayerDenoise3DHQ", "mode=4", "luma_spatial=2.0", "chroma_spatial=1.5", "luma_temporal=3.0", "chroma_temporal=2.25")
    I used this configuration.
    Did it get bad?



    Image
    [Attachment 58619 - Click to enlarge]



    Image
    [Attachment 58620 - Click to enlarge]
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  4. Member DB83's Avatar
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    The simple answer to your original question is.....


    None


    Any noise removal actually removes detail from the image and it is then your perception of visual quality that matters.


    For that reason it is not possible to use the same settings for every occasion.
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    I changed it from 4: 3 to 16: 9
    960 x 720 to 1920x1080


    I would like to know if I need to do any additional configuration?
    Image
    [Attachment 58628 - Click to enlarge]
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  6. Not in the x264 encoder settings, just set your crf. Unless you have a specific not to, you probably should just be using a preset (disable "use Advanced Configuration").

    Your source is quite noisy, I would be downscaling it not upscaling it.
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    Image
    [Attachment 58632 - Click to enlarge]

    If so, is this the right setting?

    I need to change something in Rate control?

    Info
    Image
    [Attachment 58633 - Click to enlarge]
    Last edited by kelvin; 28th Apr 2021 at 09:54.
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  8. You likely want to change Preset to normal, slow or slower.

    You can change Quality (on the screenshot its crf=20), crf=23 is the x264 default.

    Try encoding a minute or two of your video (select the section you want to encode with markersA and B, then save) and check the result suits you.
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  9. Member
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    Originally Posted by butterw View Post
    You likely want to change Preset to normal, slow or slower.

    You can change Quality (on the screenshot its crf=20), crf=23 is the x264 default.

    Try encoding a minute or two of your video (select the section you want to encode with markersA and B, then save) and check the result suits you.
    I don't want to change anything. The thing is that I changed it from 4: 9 to 16: 9. Then I wanted to know if I need to change anything in these definitions
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    I am using Avidemux just to change from 4: 3 to 16: 9. But as I am a novice, I would like to know if I need to change some other configuration so as not to lose quality.
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  11. Member DB83's Avatar
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    Simply changing a video from 4:3 to 16:9 will do two things.


    1. You stretch/distort your video unless you add borders left and right - 160 pixels each side (16:9 = 1280*720: 1280 - 960 / 2 = 160)
    2. Will involve a re-encode so you WILL lose quality
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  12. Using the the crop filter, your 4/3 video becomes 16/9 by cutting part of the frame out, instead of padding it with (black) bars.
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  13. Member
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    Originally Posted by butterw View Post
    Using the the crop filter, your 4/3 video becomes 16/9 by cutting part of the frame out, instead of padding it with (black) bars.
    The original video is 960 x 720
    Iím going to put it in 1080 x 720. So it doesnít change so much and removes the black bars
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  14. Member DB83's Avatar
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    ^^ Pretty pointless exercise. Play a 4:3 video, or even 1080*720. which is neither 16:9 or 4:3, full-screen on a 16:9 screen and the player will still add those black bars.


    A crop of 960*720 to true 16:9 removes 180 pixels. Then you must decide where you remove them. And you still have to re-encode.
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  15. Member
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    Can someone improve this video ?
    I can't seem to get better.
    Image Attached Files
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  16. Member DB83's Avatar
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    Well that has everything going against it.


    Very small picture frame.
    Low bitrate
    Low and variable framerate


    Now someone with the knowledge of avisymth may make something better out of it (not that it is worth the effort)


    For now, I have enlarged the picture frame. Increased the bitrate. And improved the framerate.
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  17. Member
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    Originally Posted by DB83 View Post
    Well that has everything going against it.


    Very small picture frame.
    Low bitrate
    Low and variable framerate


    Now someone with the knowledge of avisymth may make something better out of it (not that it is worth the effort)


    For now, I have enlarged the picture frame. Increased the bitrate. And improved the framerate.
    This is the original video. Very old.
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  18. Kawaiiii
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    It's like trying to recompose a huge building with only 10 (very damaged) bricks left.
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