The original post: /r/datahoarder by /u/Dagobert_Krikelin on 2024-12-18 23:56:56.
Hi. I have a DVD I want to rip and place in my library. In the DVD there’s a behind the scenes(bts) clip too,
I first tried this using MakeMKV and fed it the VIDEO_TS.IFO. It would open up and show me the movie and the behind the scenes clip. The info in there are:
Resolution: 720x576
Aspect Ratio: 16:9
Frame Rate: 25
I tried making mkv:s out of them and it seems perfect. I suppose this is what people call a remux?
Nothing has been altered, just moved to another container.
So the movie is fine, but the problem is with the bts. It doesn’t look correct at all. Am I understanding things correctly that the resolution is one thing and how it is displayed is another thing. It’s in fact being stretched out to a 16:9 aspect ratio. So the pixels are non-square? And this is a common procedure I’m sure. If they would be square the resolution would have had to be 1024x576 for 16:9.
If I play the movie in VLC it will show me a correct picture, defaulting to 16:9 and if I snapshot a frame and inspect it, it will indeed be 1024x576.
Now the issue is with the bts. This will do exactly the same as it has the same media info as the movie. However the bts is not a 16:9 recording. I believe it should be 4:3, or possibly 5:4, but a 5:4 looks too squished. 720x576 with square pixels is a 5:4 aspect ratio though, but I think it looks better at 768x576. How can I even tell what the correct aspect ratio is?
I assume someone didn’t care too much when making this clip for the DVD.
I would like to rectify this. but not sure exactly how to. Is there a way to add some metadata to say this is a 4:3 aspect ratio or how does it work?
