24 FPS with Higher Visual Quality or 30 FPS with Lower VQ?

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Knowname
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Post by Knowname » Tue Sep 23, 2003 5:23 pm

aah yes, it was a while back (wit radical ed0) /slips back into his memories.

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SS5_Majin_Bebi
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Post by SS5_Majin_Bebi » Tue Sep 23, 2003 7:47 pm

I made perfect sense of wwf's post. I'll break it down for the people who got him wrong.

1. He has a file.
2. He wants it to be a 50mb file.
3. He's wondering about the framerate vs quality issue.
4. At 29.97fps he's going to have to drop the bitrate to keep it at 50mb, compared to the bitrate he'd use if it was 23.976fps.

Basically, more frames to encode = higher filesize. If you lower the bitrate, the filesize will drop accordingly.

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Zarxrax
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Post by Zarxrax » Tue Sep 23, 2003 7:52 pm

But he WONT have to drop the bitrate to keep the size the same! The bitrate DIRECTLY effects the size of the file. If he has to set the bitrate to say, 1200kbps in order to get a 50mb file, it doesnt matter if he encodes at 29.97 fps, 23.976fps, or 120fps! They all require the same bitrate to achieve 50mb.

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SS5_Majin_Bebi
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Post by SS5_Majin_Bebi » Tue Sep 23, 2003 8:07 pm

Zarxrax wrote:But he WONT have to drop the bitrate to keep the size the same! The bitrate DIRECTLY effects the size of the file. If he has to set the bitrate to say, 1200kbps in order to get a 50mb file, it doesnt matter if he encodes at 29.97 fps, 23.976fps, or 120fps! They all require the same bitrate to achieve 50mb.
Oh.


Fuck, it does too.


Shit, now I feel stupid.

:oops: :oops: :oops:

Once again, SMB has made an ass of himself.

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Scintilla
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Post by Scintilla » Thu Oct 02, 2003 10:17 am

Zarxrax wrote:But he WONT have to drop the bitrate to keep the size the same! The bitrate DIRECTLY effects the size of the file. If he has to set the bitrate to say, 1200kbps in order to get a 50mb file, it doesnt matter if he encodes at 29.97 fps, 23.976fps, or 120fps! They all require the same bitrate to achieve 50mb.
Okay, so the BITRATE is the same. But the QUALITY of each frame will be somewhat better in the 23.976 version, because there's fewer frames over which to spread those bits, right?
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Zarxrax
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Post by Zarxrax » Thu Oct 02, 2003 1:10 pm

Correct.

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post-it
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Post by post-it » Fri Oct 03, 2003 12:06 pm

yeah . ( just thinks of how it would actually look if it were both 120 fps and hand drawn and Hi-bit rate if it was about a series that you loved ^_____^ )

T_T hey, I can dream; can't I?

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Dannywilson
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Post by Dannywilson » Fri Oct 03, 2003 5:31 pm

post-it wrote:yeah . ( just thinks of how it would actually look if it were both 120 fps and hand drawn and Hi-bit rate if it was about a series that you loved ^_____^ )

T_T hey, I can dream; can't I?
Make more sense. Please.
"in the morning when i have wood..i like to walk around my house and bump random shit with it.... " -Random comment on grouphug.us

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post-it
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Post by post-it » Fri Oct 03, 2003 6:09 pm

Dannywilson wrote:
post-it wrote:yeah . ( just thinks of how it would actually look if it were both 120 fps and hand drawn and Hi-bit rate if it was about a series that you loved ^_____^ )

T_T hey, I can dream; can't I?
Make more sense. Please.
Seemingless Motion - A frame rate soo fast
that details of the movements are not possible - everything is happening soo
fast that it looks like your viewing a Crystal Ball or real life instead of this
frame by frame jerkyness that 30 frames per second gives.

True Liquid Motion AMV's that are so real, your Monitor becomes a transparent
fish bowl instead of just another TV set.

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Post by wwf_htm » Fri Oct 03, 2003 7:03 pm

Scintilla wrote:
Zarxrax wrote:But he WONT have to drop the bitrate to keep the size the same! The bitrate DIRECTLY effects the size of the file. If he has to set the bitrate to say, 1200kbps in order to get a 50mb file, it doesnt matter if he encodes at 29.97 fps, 23.976fps, or 120fps! They all require the same bitrate to achieve 50mb.
Okay, so the BITRATE is the same. But the QUALITY of each frame will be somewhat better in the 23.976 version, because there's fewer frames over which to spread those bits, right?
Ok. That was what I was getting at. I forgot that the bits per second did not change. Instead, the quality per frame is what gets bumped up a notch.

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