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Questions about video quality, bitrate, and resolution

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User Info: fakewars

fakewars
2 months ago#1
Let's say I have an uncompressed 1080p video and I compress it into two different video files, one of them is 720p and the other is 480p. Both videos have identical bitrate: 3000kbps. Idk if the video format matters but let's say it's h264.

If I play those two compressed videos on 1080p monitor are they going to look identical or one better than the other?
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User Info: Renraku_San

Renraku_San
2 months ago#2
The 720p will look better because it stretches less on the monitor when the video is maximized.
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User Info: zhenghan

zhenghan
2 months ago#3
i'd put my money on the 480p looking better. but if you're uploading to youtube, i would just upload the uncompressed 1080p video.
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User Info: nominturddaddy

nominturddaddy
2 months ago#4
Is this a serious question?
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User Info: nominturddaddy

nominturddaddy
2 months ago#5
Ok wait.

Is the 720p video actually the 1080p vid compressed to 480p then you went "Oops" and used a program to make that 480p 720p, so now you have a 480p and a 720p-of-480p source and that's what you're asking here?

I am just trying to make sense of the "which number is bigger" question.
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User Info: fatali

fatali
2 months ago#6
If the bitrate is high enough for the video, then the 720p video will look better.

If the video has fast moving scenes that need a higher bitrate, then those scenes would look less pixelated on the 480p video, but the rest of the scenes would look better in the 720p video.
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User Info: nominturddaddy

nominturddaddy
2 months ago#7
Ok wait.

I have five apples.

My neighbor Jim has an apple tree and he collects 11 apples off of it.

However, my friend Jody prefers oranges. She has 5 in the fridge at home, while my coworker Denson is a banana fanatic and he has 8 in a bowl on his desk.

Denson takes the bus to work. It travels an avg of 54mph over a distance of 7.5 km. I walk at a rate of 3.7mph over a 1 mile distance to work. Jody works from home, my neighbor Jim trips getting into his car before his commute, hits his head and dies.

I end up having to look after his cat, who wanders back home one day and turns out got impregnated by a stray. She gives birth to 11 kittens. 4 are brown, 3 are white, 4 are a mix of both. I sell browns at $50 per, whites at $50 per, and mixed at $100 per. When I get down to the last two, it's a brown and a mixed, so I do a deal where someone can take both for $80 total.

Now which number is bigger: 720 or 480?
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User Info: nominturddaddy

nominturddaddy
2 months ago#8
The answer is 720.

Even if the low bitrate causes issues with motion, 720 will look better than 480. You'll just be able to see more pixels being obscured by the low bitrate at 720, whereas at 480 it's going to be so washed out you won't notice as much obscurement (if you notice it at all).
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User Info: Black_Assassin

Black_Assassin
2 months ago#9
fakewars posted...
Let's say I have an uncompressed 1080p video

This is probably just an example, but just pointing out that actually uncompressed video is ungodly huge.

If the original video actually has 1080p worth of details, then the 720p re-encode will look better. It could technically be from an SD source if we're nitpicking.
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User Info: Mr kitty

Mr kitty
2 months ago#10
720P will look better at low framerate, but may see massive block at such low bitrate(uneven quality). At 480P is will look evenly bad.
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