Can you convert 8k videos to 4k?

[quickplace1@yahoo.com]

Hi All,
Looking for a bit of help with what my possible options may be. This is my 10th year using an app called One Second Everyday. I record videos on my android phone most days. Then after the year is over, I open the app, each day on the calendar will see any videos I recorded that day, I clip my 1 second, move to the next day. Apparently in July I accidentally switched my camera's video setting to record in 8k and the app won't support 8k clips. Is it possible to convert or edit all the videos and then re-import them to my phone so the app sees them as 4k?
Thank you!!!
Maria

[Alwyn]

Yes it is. There are probably many methods including coding with FFMPEG, but for a GUI that works, Handbrake will batch-convert.

Open the folder that has the all the 8k videos in it (Folder(Batch Scan)button);

On the Dimensions tab, set the Resolution Limit to "2160P"

On the Video tab, set everything as you like; for Quality, use either RF (try 18 to start) or Bitrate (experiment, but at least 12000 for UHD)

Tools>Preferences>Output Files: set extension to Always use MP4, then Back

In the Save As box, browse to a folder to export your 2160 conversions into;

At the top, on the "Add to Queue" droplist, choose "Add All"

Click "Start Queue".