Can you increase bitrate higher than the original raw source video ?

[GoodEnough]

Is it possible, and does it help with smoothness?
Or logically, you can't make it higher than it originally was.

[lordsmurf]

Smoothness?

Anyway, no, increasing bitrate doesn't increase image quality.

[GoodEnough]

Yea, low bitrate makes movement jumpy.
What is max bitrate possible ?

[lordsmurf]

low bitrate makes movement jumpy

Huh? That's not how it works.
Sort of like saying your car backfires when you're eating a banana.

[GoodEnough]

Sure it is.
4k video of ball being thrown.
40million bit rate = ball smooth
4 million bitrate = ball jerky

[butterw]

Captured frames-per-second is mainly what you need for smooth motion in such a case, ex: 60fps or more, obviously with adequate bitrate.

[manono]

40million bit rate = ball smooth
4 million bitrate = ball jerky

All nonsense.

[jagabo]

40million bit rate = ball smooth
4 million bitrate = ball jerky

All nonsense.

Generally, I agree. But there are some codecs that reduce the frame rate internally when the bitrate is too low. WMV is one of those. A 30p sequence may be reduced to 15p, maybe even lower.

[GoodEnough]

Nonsense?

Sorry but for a given 1080p 30fps video clip,
different bitrates have totally obvious smoothness variations.
20000, 10000, 4000, 2000 kbps

The proof is my own eyeballs

[jagabo]

Nonsense?

Sorry but for a given 1080p 30fps video clip,
different bitrates have totally obvious smoothness variations.
20000, 10000, 4000, 2000 kbps

The proof is my own eyeballs

No. Blocking and blurring will happen with lower bitrates, but not jekry motion (except in the case I mentioned where some codecs reduce the frame rate internally if you specify too low a bitrate). Upload some samples that show what you are seeing.

And what do you mean by "raw source video"? Uncompressed video? Raw beyer pattern video?

In any case, you can't take a low bitrate video and just re-encode it at a higher bitrate to get any kind of improvement. The damage has already been done.

[ChapmanDolly]

Jagabo is absolutely right. If I shoot at 35Mbps and reduce the bitrate when rendering I am throwing away detail which will result in blurring and blocking. Increasing the bit rate above the original 35Mbps will not add any detail as there is none there to add. Bit rate will have no effect on the frame rate, which, along with motion blur, is what governs the smoothness of the video. Unless you are shooting with a phone. Phones generally use variable frame rate to adjust the exposure so possibly causing some motion to be jerky.

[abolibibelot]

This thread makes no sense.
(Well, except for the two posts above which bravely attempted to make some sense of it all.)

In any case, you can't take a low bitrate video and just re-encode it at a higher bitrate to get any kind of improvement. The damage has already been done.

But it does make sense if the goal is to preserve whatever low quality there is as much as possible (and no other source is available). A common misconception is that a video will retain a similar quality if recompressed to the same bitrate, whereas in fact the only way to retain a similar quality when recompressing a video with a low bitrate is to set a way higher bitrate than the source (it sure won't improve it but it will make it less ugly if it has to be recompressed anyway).

[johns0]

The only way adding bitrate helps is if you are re-encoding a video so you lose less quality,it never adds quality that wasn't there to begin with.

[sophisticles]

sure it is.
4k video of ball being thrown.
40million bit rate = ball smooth
4 million bitrate = ball jerky

^^^rotflmao!!!

[abolibibelot]

“Some balls are made for charity and some for fancy dress
But when they're held for pleasure they're the balls that I like best
My balls are always bouncing to the left and to the right
It's my belief that my big balls should be held every night”
~ AC/DC, "Big balls”

[lordsmurf]

“some balls are made for charity and some for fancy dress
but when they're held for pleasure they're the balls that i like best
my balls are always bouncing to the left and to the right
it's my belief that my big balls should be held every night”
~ ac/dc, "big balls”

lol!

Ah, great song. I can hear it in my head by just reading those lyrics.
<heads over to MP3 folder>

[4kblurayguru]

Fps and shutter speed helps smoothness not bitrate.