vob to avi

Scintilla · Post by **Scintilla** » Sat Dec 18, 2004 4:00 pm

WonJohnSoup wrote:The ONLY problem now, is that when I save a 10 second test project with Premiere that starts out from a 24 mb file, it usually gives me a 300 mb file. I'm saving with Microsoft AVI with no compression. I've tried saving with Huffyuv under Premiere, but that only takes it down to 120 mb. I've tried runnin the 300 mb uncompressed project from Premiere under VirtualDub using Huffyuv, but that only brings it down to arond 100 - 120 mb.

The music video I'm planning is around 4:30 long. Won't that make it several gigs uncompressed and still a few hundred megabytes compressed with huffyuv???

Yes. But that's the price you pay for perfect quality.

And by the way, there's no reason to go uncompressed when you've got HuffYUV (and/or Lagarith).

post-it wrote:WonJohnSoup
- there are many methods of making AVI's using Xvid and this is just one way:
take the Horizontal size = 512
take the Vertical size = X 384
making us the value = 196608

take 196608 ÷ 80 = 2457.6

that number, 2457, is your CBR value in Xvid Encoding. - try it

... Why would you make a CBR XviD encode when you can almost just as easily do a much more efficient VBR encode plugging in the desired bitrate as your average bitrate?

And until you explain where you got the number 80 from (and probably not even then), it's not at all clear how the method you just described takes into account things like complexity/compressibility of scenes or even the length of the video to be encoded... or, perhaps more importantly, the desired filesize.

post-it · Post by **post-it** » Sat Dec 18, 2004 4:23 pm

Scintilla wrote: ... Why would you make a CBR XviD encode when you can almost just as easily do a much more efficient VBR encode plugging in the desired bitrate as your average bitrate?

.. simple.
. 1) With a Constant Bit-Rate encode, you can tell if your Video is not Clean.
. 2) A Varible Bit-Rate Encode can not be averaged for overall file size.
and
. 3) A Varible Bit-Rate Encode will never let you spot Pixelizing/MacroBursting
unless your settings are way-way too low ... as in <a href="http://www.streamload.com/merlins_magic/K-of-H commercail.avi">this</a> garbage 6meg file!

hehe - what was your solution again;
Projected Size of the File = 40 meg.
Divide that by the number of seconds in the AMV ... gives you the Constant
bit rate for MPEG's ... times 8 ... gives you the AVI Codec Settings.
it's not at all clear how the method you just described takes into account things like complexity/compressibility of scenes
hehe

Tono_Fyr · Post by **Tono_Fyr** » Sat Dec 18, 2004 4:29 pm

post-it wrote:
Tono_Fyr wrote:
post-it wrote:
Tono_Fyr wrote: feild bob, and then choose smooth on both.

oh yeah - big improvement there ~_~
There's no way that's DVD footage.

http://www.streamload.com/merlins_magic/microb1.jpg

Which pane is input and which is out? And, as I said, it clears up MOTION. It doesn't do anything for picture quality... and that must be a really crappy DVD.

post-it · Post by **post-it** » Sat Dec 18, 2004 4:39 pm

Tono_Fyr wrote:
post-it wrote:
Tono_Fyr wrote:
post-it wrote:
Tono_Fyr wrote: feild bob, and then choose smooth on both.

oh yeah - big improvement there ~_~
There's no way that's DVD footage.
http://www.streamload.com/merlins_magic/microb1.jpg
Which panel is input and which is out? And, as I said, it clears up MOTION. It doesn't do anything for picture quality... and that must be a really crappy DVD.

the left is out, after the BOB filter and yeah - it is that bad!
.... ISBN# 4-988102-822712 Rizelmime, 2 DVD set. - not advisible

Tono_Fyr · Post by **Tono_Fyr** » Sat Dec 18, 2004 5:10 pm

post-it wrote:
Tono_Fyr wrote:
post-it wrote:
Tono_Fyr wrote:
post-it wrote:
Tono_Fyr wrote: feild bob, and then choose smooth on both.

oh yeah - big improvement there ~_~
There's no way that's DVD footage.
http://www.streamload.com/merlins_magic/microb1.jpg
Which panel is input and which is out? And, as I said, it clears up MOTION. It doesn't do anything for picture quality... and that must be a really crappy DVD.
the left is out, after the BOB filter and yeah - it is that bad!

On everything I've tried it on, it's came out pretty crisp. I think it's your source footage getting in the way there.

Scintilla · Post by **Scintilla** » Sat Dec 18, 2004 5:53 pm

post-it wrote:
Scintilla wrote: ... Why would you make a CBR XviD encode when you can almost just as easily do a much more efficient VBR encode plugging in the desired bitrate as your average bitrate?
.. simple.
. 1) With a Constant Bit-Rate encode, you can tell if your Video is not Clean.

... What does this even mean?
You can tell if your input video is clean or not simply by running through it in VirtualDub, and whether your encode is clean or not is going to depend upon filtering and encoder settings. I must admit I totally don't understand the point you tried to make with this statement.

And CBR isn't inherently any cleaner or dirtier than VBR -- if you encoded CBR at some insane rate like 8Mbps, then sure it'll be clean.

post-it wrote:. 2) A Varible Bit-Rate Encode can not be averaged for overall file size.

Um, what do you think "target bitrate" is for? Heck, XviD 1.0 even comes with a handy bitrate calculator that lets you plug in your desired filesize.

post-it wrote:and
. 3) A Varible Bit-Rate Encode will never let you spot Pixelizing/MacroBursting
unless your settings are way-way too low ... as in <a href="http://www.streamload.com/merlins_magic/K-of-H commercail.avi">this</a> garbage 6meg file!

... the hell?
The whole point is to avoid macroblocking and other artifacts by intelligent distribution of bits. Why would you want to see artifacting in the resulting encode?
And as I said, you won't get macroblocking with, say, CBR 8000Kbps either. (Barring some very screwy source.)

post-it wrote:hehe - what was your solution again;
Projected Size of the File = 40 meg.
Divide that by the number of seconds in the AMV ... gives you the Constant
bit rate for MPEG's ... times 8 ... gives you the AVI Codec Settings.
it's not at all clear how the method you just described takes into account things like complexity/compressibility of scenes

Okay, where do I start?

1) This isn't even my solution, it's <a href="http://www.animemusicvideos.org/guides/ ... Ermac's</a> (I notice they STILL haven't fixed it by adding "multiply by 8" before "subtract 224"

)
2) It's not even Ermac's really, because you screwed it up so badly (you neglected to multiply 40 by 1024 to get # of kilobytes and also to account for the audio)
3) I suppose this falls under (2), but AVI is not mentioned anywhere in that whole process, so I don't know where you got that from
4) Once again, this is NOT meant to calculate a CONSTANT bitrate, but an AVERAGE one
5) If you'll follow that link, you'll find this:

Ermac wrote:If you find that your final encode has a lot of MPEG1 artifacting, you can try increasing the maximum bitrate (if you left it on Constant Quality) or raising both the ceiling and average bitrate if you went with 2-pass.

That's the part that addresses compressibility.

The parts of the guides that go over encoder settings all include directions on what settings to tweak if you find you've got too much artifacting or if your file is needlessly big (MPEG-1 version was cited above).

Corran · Post by **Corran** » Sun Dec 19, 2004 3:05 am

post-it wrote:
Corran wrote:Post-it: While I won't go as far as calling you a loser, I truely wish that you would make yourself better informed before posting in the help forums. It seems that are always giving out misinformed advice. While it is given with good intentions it isn't helpful.
That was easy - I'll stop ^_^

What happened to this?

post-it · Post by **post-it** » Sun Dec 19, 2004 8:11 am

its over.

I finally found what I was searching for - no more "garbage."

- these boards are all yours