I have here a video clip, which I placed together with other clips in a 53 seconds long video. I tested the compression settings for days and then applied them to a longer video (about 7 minutes). The longer video also contains the same clip, so I compared the same frames on both videos.
Source material: 3840x2160_25p 16:9 h264
Target material: 1920x1080_25p 16:9 h264
I have chosen my compression settings as follows:
Quality based (VBR) 60%
Now to my observation, which I can’t explain:
The frame from the 7 minute video looks worse than the frame from the 53 minute video. At absolutely the same compression settings with the same quality specification. Even when I rise quality to 85% in the 7-minute video the result looks worse than the 53-second video @60% while the filesize rises by factor 35. What am I doing wrong?
Since I am a new user, I can not put 2 Images in a post to show you what I mean…