Quote:
Originally Posted by kwag
No
Every movie has different complexity, so each movie will have a different bitrate allocation.
Hint: Use CQMatic and CalcuMatic
-kwag
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Thanks for the info kwag! Nevertheless, I downloaded
CQMATIC and
CACUMATIC. Great tool!
Anyway I was wondering a concept:
If I want a 170 MB of final size and the media file is 23 minutes and 32 seconds lenght,
then I assume that CalCuMatic is doing this:
and for the video:
If this procedure is correct, I am wondering: what about the video resolution ? Does NOT it matter ?
I mean, the resolution of a video file is NOT strictly related to bitrate ?
If the resolution is NOT related to bitrate,
can I assume that a 720x480 @ 859 KBPS will have the SAME quality as 352x240 @ 859 KBPS ?
And about this:
Quote:
Originally Posted by kwag
Every movie has different complexity, so each movie will have a different bitrate allocation
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Where this analysis is being performed ? I mean, when we encode in a 2-pass process,
I think the encoder, performs the first pass to analyse the complexity of the video, right ?
I assume that in CQMATIC:
If the option
"Deep Prediction" is reponsible for a deep analysis, I will have a problem,
because the tool is aiming to TMPGENC and I am using HC15A & QUENC
(wich I think are far better for MPEG-2 Encodes, right ?
TMPGENC is pretty good for MPEG-1 If I Recall Correctly)
Quote:
Originally Posted by Dialhot
Hum... as I was just typing my values in the table I'm now wondering : why a value range for a given resolution and not a fixed value ?
So perhaps you are right, the question is about average bitrate and then there is no possible answer.
Sparkster, can you precise your question please ?
I can give my idea about values for MAX bitrate. I think this can have interest for some people.
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Yes, good idea! Well, my original idea/thinking is: which values are optimal to each resolution in a "multipurpose" method (for any kind of video).
Once again I recall: is NOT the resolution strictly related to bitrate ?
And finally this illustrates where I want get into. I do not know the technical name for this "side effect".
I would call it "macro blocks". Because in fact, they are big blocks.
I know this occurs when you use a low bitrate for encoding.
And I think that MPEG-2 standard requires a lot more bitrate than MPEG-4 for the same quality is it right ?.
Well, in just few words: "which is the minimal bitrate for you not get "macro blocks" in each standard DVD resolution".
PS: Dialhot, if you just wanna do a table for maximum values, please, do it. It may be very useful too.
Anyway, "ranges" and "minimals" would ber very appreciated