VideoHelp Forum
+ Reply to Thread
Results 1 to 21 of 21
Thread
  1. Member
    Join Date
    Aug 2014
    Location
    Hong Kong
    Search Comp PM
    Hi all,

    I tried upgrade an old .mp4 video to 4K resolution with following step:

    Desktop computer - AMD Ryzen5 8-core CPU
    Display - 32" 4K Dell display
    RAM - 32G onboard

    OS - Ubuntu 22.04 desktop (Linux)

    On Terminal run following command:
    $ ffmpeg -i old_video.mp4 -vf scale=3840:2160 new_video_4k.mp4

    It works, taking about 9 min to finish
    File size - increasing from 37.5 MB to 283.9 MB

    The 4K new video takes up the full 32" 4K display. But there is no improvement on its quality. Is there any way to enhance the video quality as well.

    Please advise. Thanks

    Regards
    Quote Quote  
  2. Member
    Join Date
    Mar 2008
    Location
    United States
    Search Comp PM
    Originally Posted by satimis View Post
    But there is no improvement on its quality.
    Well of course not, all you did was a straight upscale.
    For any questions about improving quality you need to give a good explanation
    of the problems (at a mimimum). Better still, also provide a video sample
    Quote Quote  
  3. Originally Posted by satimis View Post
    Hi all,

    I tried upgrade an old .mp4 video to 4K resolution with following step:

    Desktop computer - AMD Ryzen5 8-core CPU
    Display - 32" 4K Dell display
    RAM - 32G onboard

    OS - Ubuntu 22.04 desktop (Linux)

    On Terminal run following command:
    $ ffmpeg -i old_video.mp4 -vf scale=3840:2160 new_video_4k.mp4

    It works, taking about 9 min to finish
    File size - increasing from 37.5 MB to 283.9 MB

    The 4K new video takes up the full 32" 4K display. But there is no improvement on its quality. Is there any way to enhance the video quality as well.

    Please advise. Thanks

    Regards
    Not sure what are your expectations on upscaling. Just upscaling does not reveal more picture details. It blows up the filesize only, as you have noticed. You can usually leave the upscaling to the TV and keep the original resolution (frame size) as is.
    You may however want to try some AI upscaling methods which is a subject of its own. Maybe someone more knowledgable will chime in.....

    P.S. Did you by a camcorder by now for playing and digitizing your Video8 tapes?
    Last edited by Sharc; 11th Oct 2023 at 12:46.
    Quote Quote  
  4. There is no point to upscaling. If you have a 4K display, the display/TV will do that for you, thus filling up the display to the edges. The quality, however, cannot be improved by upscaling. There is some hope that various AI algorithms, with lots of training, may someday be able to create details where none existed before, but I am very skeptical. At this point in time, the best you can do is (sometimes) create the illusion of more detail using sharpening. However, it usually creates artifacts which detract from the illusion of sharpening so I never do it.
    Quote Quote  
  5. Banned
    Join Date
    Nov 2022
    Search PM
    Move in. Stop. Pan right and pull back. Stop. Enhance 34 to 36. Go right. Stop. Enhance 57 to 19. Track 45 left. Stop.
    Quote Quote  
  6. Originally Posted by satimis View Post
    37.5 MB
    already compressed, can't get a better quality from that file.
    Quote Quote  
  7. Member
    Join Date
    Aug 2014
    Location
    Hong Kong
    Search Comp PM
    Hi,

    Thanks for your advice. After upgrade the movie is blurry, not clear. Please see the screenshot attached here.

    Regards
    Image Attached Thumbnails Click image for larger version

Name:	screenshot_movie50.png
Views:	58
Size:	371.7 KB
ID:	74312  

    Quote Quote  
  8. Originally Posted by satimis View Post
    Thanks for your advice. After upgrade the movie is blurry, not clear.
    Yet another reason to not bother upscaling. Your TV set will do it and not make it worse. However, if you do it, and then do it incorrectly, the result will be worse ("blurry") rather than better, and in addition you will have wasted all that time that you could have used to do something else.
    Quote Quote  
  9. Member
    Join Date
    Aug 2014
    Location
    Hong Kong
    Search Comp PM
    Hi all,

    On Google searching I found follows:-

    1)
    BEST Free Video Enhancer to Improve Video Quality
    https://www.guru99.com/video-quality-enhancer.html

    All of them are NOT FREE

    2)
    Open Source Video Upscalers
    https://sourceforge.net/directory/video-upscalers/

    3)
    Top 3 AI Video Upscaling Open-Source Software in 2023
    https://www.hitpaw.com/video-tips/ai...en-source.html

    folks on the forum having experience please shed me some light.

    Thanks
    Quote Quote  
  10. Member
    Join Date
    Mar 2008
    Location
    United States
    Search Comp PM
    Originally Posted by satimis View Post
    Hi all,

    On Google searching I found follows:-

    1)
    BEST Free Video Enhancer to Improve Video Quality
    https://www.guru99.com/video-quality-enhancer.html

    All of them are NOT FREE

    2)
    Open Source Video Upscalers
    https://sourceforge.net/directory/video-upscalers/

    3)
    Top 3 AI Video Upscaling Open-Source Software in 2023
    https://www.hitpaw.com/video-tips/ai...en-source.html

    folks on the forum having experience please shed me some light.

    Thanks
    If you want to shed some light, post a video clip showing the problems, cut from the original file
    Quote Quote  
  11. Member
    Join Date
    Aug 2014
    Location
    Hong Kong
    Search Comp PM
    Originally Posted by davexnet View Post
    Originally Posted by satimis View Post
    Hi all,

    On Google searching I found follows:-

    1)
    BEST Free Video Enhancer to Improve Video Quality
    https://www.guru99.com/video-quality-enhancer.html

    All of them are NOT FREE

    2)
    Open Source Video Upscalers
    https://sourceforge.net/directory/video-upscalers/

    3)
    Top 3 AI Video Upscaling Open-Source Software in 2023
    https://www.hitpaw.com/video-tips/ai...en-source.html

    folks on the forum having experience please shed me some light.

    Thanks
    If you want to shed some light, post a video clip showing the problems, cut from the original file
    Thanks for your reply.

    I have many old video needed to ugrade their quality. I'll cut a section of one of them as example. Please advise the max size of file (.mp4) I can upload here? Thanks

    Regards
    Quote Quote  
  12. Member
    Join Date
    Mar 2008
    Location
    United States
    Search Comp PM
    Originally Posted by satimis View Post
    Originally Posted by davexnet View Post
    Originally Posted by satimis View Post
    Hi all,

    On Google searching I found follows:-

    1)
    BEST Free Video Enhancer to Improve Video Quality
    https://www.guru99.com/video-quality-enhancer.html

    All of them are NOT FREE

    2)
    Open Source Video Upscalers
    https://sourceforge.net/directory/video-upscalers/

    3)
    Top 3 AI Video Upscaling Open-Source Software in 2023
    https://www.hitpaw.com/video-tips/ai...en-source.html

    folks on the forum having experience please shed me some light.

    Thanks
    If you want to shed some light, post a video clip showing the problems, cut from the original file
    Thanks for your reply.

    I have many old video needed to ugrade their quality. I'll cut a section of one of them as example. Please advise the max size of file (.mp4) I can upload here? Thanks

    Regards
    You're allowed to post up to 500MB on this site, but it doesn't sound as if you need that much.
    30 - 60 seconds that shows the issues should be enough
    Last edited by davexnet; 13th Oct 2023 at 10:12. Reason: typo
    Quote Quote  
  13. Originally Posted by satimis View Post
    I have many old video needed to ugrade their quality.
    You say "upgrade their quality," but what are you expecting is going to happen? You cannot get more detail. This means you cannot make standard definition video look like high definition (HD) video.

    This is the "restoration" forum, not the "magic" forum. The techniques discussed here can remove some artifacts, like dirt on movie film, or noise on video, and dozens of other things (e.g., dot crawl). There is software for changing frame rates. You can remove duplicate and missing frames.

    What you cannot do is create detail that isn't there. It is pretty clear that this is what you are trying to do. I won't bother posting again, but just to be clear: you are wasting your time.
    Quote Quote  
  14. I have achieved good results with HitPaw AI Video Enhancer....... no need to upscale, tho', as display device achieves this in-line.
    Ouput video size is comparable to a decent H264 rip. (I am upscaling my DVD collection).
    The downside is time taken to process - using the 'Fast Denoise Model': approx 4X video duration (RTX4070Ti), or 12X (RTX3050), however my DVDs are now quite watchable on a 4K 75" panel.
    Conversion PC runs 'lights out' in the cellar - managed with TeamViewer.
    As a guide, the 'Normal Denoise model' takes approx 4 times as long for minimal improvement (IMHO).
    Hope this helps.
    Cheers ....
    Quote Quote  
  15. Originally Posted by satimis View Post
    I have many old video needed to ugrade their quality.
    You can't turn lead into gold.
    If you want to improve something you should actually start with a high quality lossless capture of your videos rather than using a possibly overfiltered and re-encoded variant (your .mp4). But keep in mind VHS (or Video8) is still VHS. You can't expect miracles, and just upscaling is pointless anyway.

    Lot of these enhancement promises of those tools is just snake oil, but you are free to try.
    Last edited by Sharc; 13th Oct 2023 at 01:18.
    Quote Quote  
  16. Member
    Join Date
    Aug 2014
    Location
    Hong Kong
    Search Comp PM
    Originally Posted by Harry leChein View Post
    I have achieved good results with HitPaw AI Video Enhancer....... no need to upscale, tho', as display device achieves this in-line.
    Ouput video size is comparable to a decent H264 rip. (I am upscaling my DVD collection).
    The downside is time taken to process - using the 'Fast Denoise Model': approx 4X video duration (RTX4070Ti), or 12X (RTX3050), however my DVDs are now quite watchable on a 4K 75" panel.
    Conversion PC runs 'lights out' in the cellar - managed with TeamViewer.
    As a guide, the 'Normal Denoise model' takes approx 4 times as long for minimal improvement (IMHO).
    Hope this helps.
    Cheers ....
    Hi,

    Thanks for your advice and link.

    I have tried following Video Enhancer online;
    https://clideo.com/

    It has done a good job. Please refer to the screenshot attached. I'll try AI Video Enhancer later to compare their result.

    What I'm trying to achieve is to enhance the sharpness of the video.

    Regards

    Edit
    ====


    Just tried following AI Video Enhancer online
    https://www.cutout.pro/ai-video-enhancer

    The result is worser. Please see screenshot attached
    Image Attached Thumbnails Click image for larger version

Name:	oldhk_clideo50.png
Views:	31
Size:	359.4 KB
ID:	74320  

    Click image for larger version

Name:	screenshot_cutoutpro50.png
Views:	28
Size:	451.4 KB
ID:	74321  

    Last edited by satimis; 13th Oct 2023 at 02:03.
    Quote Quote  
  17. Snake oil, as I said. But if you like it, why not.

    The Clideo VideoEnhancer (first attached picture) may look better to you, but it clipped the whites badly. Means the sky is just plain flat white for example, loosing any gradation and details. A natural sky is never just plain white. Clipping/crushing of the brights may even be more annoying in other scenes.

    The AI Video Enhancer (second attached picture) tried to preserve the gradation at least.

    Both still blurry of course. But VHS is VHS. No miracles to be expected.
    Last edited by Sharc; 13th Oct 2023 at 03:09.
    Quote Quote  
  18. If you want sharp results when AI upscaling you need to provide a sharp video to start with. Or select an AI model that does that for you.
    Quote Quote  
  19. Member
    Join Date
    Aug 2018
    Location
    Wrocław
    Search PM
    Originally Posted by satimis View Post
    The 4K new video takes up the full 32" 4K display. But there is no improvement on its quality. Is there any way to enhance the video quality as well.

    Please advise. Thanks

    Regards
    1. Neat Video (It's a denoiser, but it can also nicely sharpen an upscaled video)
    2. Topaz Video AI -- has mixed opinions

    Both are paid, but you can try demo versions.
    Quote Quote  
  20. Member
    Join Date
    Aug 2018
    Location
    Wrocław
    Search PM
    Originally Posted by satimis View Post
    Hi,

    Thanks for your advice. After upgrade the movie is blurry, not clear. Please see the screenshot attached here.

    Regards
    So your player does upscaling better than ffmpeg Which isn't difficult.
    Quote Quote  
  21. Member
    Join Date
    Aug 2014
    Location
    Hong Kong
    Search Comp PM
    Originally Posted by rgr View Post
    Originally Posted by satimis View Post
    Hi,

    Thanks for your advice. After upgrade the movie is blurry, not clear. Please see the screenshot attached here.

    Regards
    So your player does upscaling better than ffmpeg Which isn't difficult.
    The quality is more less the same. But ffmpeg version the video is down size
    Quote Quote  



Similar Threads

Visit our sponsor! Try DVDFab and backup Blu-rays!