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Wim

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Posts posted by Wim

  1. Dear Borate,

    Thank you very much for these suggestions. Both of your solutions work : (i) exporting directly and selecting "CROP and ZOOM", or (ii) applying the zoom-effect with pre-set aspect ratio 9:16 and then exporting again to 9:16 aspect ratio, letterboxed.

    Can you also explain to me why the "Crop to aspect ratio" does not work ? The effect should in principle be the same, so I do not understand where the blurring comes from. Can you also reproduce the problem in your latest version of Videopad ?

    Thank you,

    Wim

  2. Hello Borate,

    First of all thank you for the very quick reply.

    The version is Videopad Professional v8.56.

    You can download an example .mp4, recorded with screen capture (resolution 1920 x 1080) with OBS Studio. Then two exports in Videopad are done (Sequence 8 and 9), where 8 is a lossless conversion with the same size and aspect ratio, and for Sequence 9, only "Crop to aspect ratio" is applied, and then again exported to resolution 607x1080. The difference in blurring is very clearly visible.

    Here is the download link:

    https://drive.google.com/drive/folders/1mZytXYZS73ts4lQivlR6S0lVVDRGo-qy?usp=sharing

    Thanks in advance,

    Wim

  3. Hi, I observe the following problem in Videopad Video Editor.

    I have recorded a screen capture with OBS Studio in resolution 1920 x 1080, encoder x264 software, and .mp4 format. The video has two black bands left and right, and only contains information in the central part, which is 607 x 1080 (aspect ratio 9:16 instead of 16:9). The video looks perfectly sharp in VLC player and Windows Media player.

    If I export that 1920 x 1080 video in Videopad with lossless option (basically without any operations on it), or even with other output settings, the output result is always sharp.

    However, when I apply the Video effect "Crop to aspect ratio 9:16" (to get rid of the black bands left and right), and I export that video, I get serious blurring. I tried different settings (automatch content 607 x 1080) and pre-sets like YouTube video - vertical content (9:16), but nothing helps. Blurring should not happen, because the information in the central 1/3 vertical band of the 1920 x 1080 is unchanged, only the black side-bands are removed.

    I know from reading previous posts that sometimes also the export from OBS Studio is a problem, but for the non-cropped video, the conversion is fine. I also checked other suggestions, like cleaning the cache files, knowing that the preview window can be blurred, etc., but those are not the causes. Also changing the framerate did not help.

    I can upload an example video where the problem is illustrated, but I do not know where to put the files. 

    Thank you in advance,

    Wim

  4. Hello, I have a very large video (27 GB) with a high resolution (4096x3286) from a microscopic experiment with slowly moving events, so the number of recorded frames is way higher than the speed of the event that we want to observe.

    I would like to import the .AVI file in Videopad Video Editor, lower the resolution and at the same time save only every 2nd, 3rd or even 50th frame, and then save it again.

    I browsed through the forum and found many topics on setting a constant frame rate, or cutting and trimming clips, but not about only saving every x-th frame in an easy way. Maybe I searched for the wrong keywords (skip frames, drop frames, etc.), but I could not find it.

    For example, in VirtualDub software, you can just set a counter to decimate by 2, 3 or more frames, but VirtualDub cannot deal with the very high resolution of the images (4096x3286) and the file size (more than 27 GB).

    So I would like to read in the .AVI file, reduce the resolution 4-5 times and at the same time, save only every 50th frame, and then export the video again (and potentially change the frame rate again, to see the event happening much faster).

    Are there any suggestions how to do this efficiently ?

    Best regards, Wim

  5. Dear Nationalsolo,

    Your suggestion does the tric. The quality stays preserved now. 

    I used "Position" to centre + "Scale x 2", but your suggestion to use the Zoom option with aspect ratio 16:9 works better.

    P.S. Is it necessary to load the video in two tracks ? I used the scissors to split the video in two clips, then cropped the two clips (left and right), did the zoom to 16:9 and then did the video output to 1280x720. 

    Thank you for the prompt reply and excellent answer,

    Wim

  6. Hello,

    I have recorded in OBS Studio a video with resolution 2560 x 720 (32:9), basically two screen outputs of 1280 x 720 next to each other.

    I want to edit now the video in Videopad Video Editor, in order to keep the left screen for a certain time, and then keep the right screen for a certain time, and write the resulting video to 1280 x 720 (16:9) resolution.

    When I open the video in the bin, Videopad scales the canvas to a size of 2560 x 1440 (16:9). I try to change the format to my own, by rightclicking the context menu and checking "Change Clip Aspect Ratio...". However there is no aspect ratio that satisfies my needs. 32:9 is not in the list.

    The workaround is not satisfying. In that case, I split the video in two parts. In the first part, I crop the right screen output and centre the left screen output. In the second part, I do vice-versa. Now I end up with a centred 1280 x 720 video, on a canvas of 2560 x 1440. I should now "shrink the canvas" to 1280 x 720, but that does not seem to work. I can scale the centred video with a factor 2, and then again export the video to 1280 x 720, but that clearly leads to quality loss.

    Is there a way to "shrink the canvas", or to define your own aspect ratio ?

    Thank you in advance,

    Wim

     

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