addressed Crop of 16:9 video to aspect ratio 9:16 leads to blurring

[Wim]

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

[borate]

What version of VP is being used?  Try the latest.  For licensed users upgrades are free for up to six months from purchase date.  After that, VP will continue to fully function but a fee will be required in order to register the newest.  Retain your old install file and registration info.

Yes, let's take a look.  Upload files to a free server, MSOneDrive, Google Drive or the like.  Get a shared (public) link and post it here.

If using Google Drive, be sure that the link isn't 'restricted' but instead 'anyone can view.'

[Wim]

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

[borate]

If this was your original...  

  16:9

And this is the desired result...    9:16

 

Then set a custom export 9:16 resolution and select CROP and ZOOM.   Or apply the ZOOM effect (instead of Crop), export at a 9:16 resolution, letterboxed.

Images look relatively clean and comparable.  Your VP version is dated.  Try the latest.

[Wim]

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

[borate]

In v11.80 after applying the CROP effect and then CROP AND ZOOM exporting, the result is just the same. 

Try the latest version, even if unlicensed.  Just retain your old installer.  Many changes have been made since the 8x series.