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Film möglichst stark komprimieren (XVID?)

Film as much as possible to compress (XVID?)



Frage von brockerdocker:
März 2009

Hello,
I have the problem that I have a 80min video of a mini-DV as DV-AVI with about 16GB have available. I would now like to turn the video with XVID compression to approximately 70MB. I realize the quality is bad, but I need this size. I have the video in Magix and export it via XVID without sound (which I add this later). So far so good, but I never come under 160MB. My settings are:
- Unrestricted
- Twopass - 2nd pass
- Target size (kbytes): 60000
- The rest is pretty standard

So, although I 60MB as Target Size indicates always come out around 160MB. What am I doing wrong? For any help, I am grateful!
I am bound s.XVID not synonymous, but have heard that the s.besten be able to compress ...
Many greetings,
brockerdocker



Antwort von domain:

To my knowledge, not compressed DivX below 250 kbit / sec and that is 1 / 100 in comparison to 25 Mbit / sec of DV-AVI or HDV. So, to below 1 / 100 of the original file, you will in my opinion, can hardly come, but obviously you want with 70 MB for 80 minutes.



Antwort von brockerdocker:

Hello!
Thanks for the advice! Does this mean what would it bring if I file compress twice in a row? First of DV-AVI to XVID and then again with XVID encoded leave?
Many greetings,
brockerdocker





Antwort von TheBubble:

"brockerdocker" wrote:
Does this mean what would it bring if I file compress twice in a row?


This brings nothing.

What Resolution Should the compressed video have?



Antwort von tommyb:

XviD and DivX are working with a Quantizer sg. This is a purely mathematical value between 1 and 31 (XviD) about the quality determines how large a 16x16 pixel block is compressed. The lower the quantizer, the less strong, the block is compressed and the better the quality synonymous.

The - is a very simplified description.

Now it is so that the quantizer is not infinitely large but also can be a maximum of 31 percent. Maybe your video will be synonymous with Q31 consistently coded and there are still far too many image information, which is synonymous means that your video is no longer smaller than 160MB can be.

You can do two things:

1. The resolution of your videos collapse. This is the most efficient way and that you will not be 95% off pass.

2. Another codec like h264. h264 creates synonymous Quantizer to 64th Alternatively, you may also synonymous try Windows Media Video.



Antwort von brockerdocker:

Hi,
the video, a Resolutionvon 320x240 or something in the direction of what little space and consumes one still sees what.
However I have now done with the software SUPER v2009 using the video. MKV codec with the H.263 + (64kbps) and Ogg Vorbis (48kbps) to about 52 MB to press for a length of approximately 70min.
I've tried a lot and so isses s.kleinsten. Since net sooo much I like this idea, I've very pleased synonymous if the picture quality may be better. (Hab synonymous with XVID and H.264 SUPER tested, but have found no great difference.)
Yours sincerely,
brockerdocker



Antwort von LarsProgressiv:

Hello tommyb,

"tommyb" wrote:
XviD and DivX are working with a Quantizer sg. This is a purely mathematical value between 1 and 31 (XviD)
[...]
h264 creates synonymous Quantizer to 64th [...]


that is to say, both the quantizer codecs are comparable (at least until 31)?

brockerdocker: I think that at a Resolutionvon XVID 320x240 significantly better than H.263 + with the same size, but certainly I am not. Since I am such a small movie encode extremely rare.

If you are the video can be made available, I would be trying times.

Regards
Lars



Antwort von brockerdocker:

Hi,
Thanks for the offer. I got the movie now after http://ecoffenbach.sf-ogame.de/Recording.avi uploaded. It is exactly half a minute. It would be so cool, so if you compress to 0.5 MB and could then tell me with what settings you've achieved. Incidentally, it would bring something to the video black and white switch? Thank you ever,
tschau brockerdocker



Antwort von tommyb:

Quote:
that is to say, both the quantizer codecs are comparable (at least until 31)?

From personal experience with x264 and XviD codecs can not compare s.den Quantizer.

Q1 when XviD is the maximum attainable quality. x264 is a giant in Q1 file. Q9 and Q12, however, shows a similar optical quality.

Q31 looks awful in XviD out. Q31 at x264 still looks much better, but is roughly 20% larger than XviD file. Similar quality as in Q31 XviD x264 achieved with approximately Q37. The file size is around 40% lower.

The quantizer of the two codecs are of not really comparable. The best is still Q64, because it's a puzzle picture in 16 parts;)



Antwort von tommyb:

"brockerdocker" wrote:
It would be so cool if you so could compress 0.5 MB

If the sound is compressed to MP3, then the file size is only 611KB.

Tonkompression must happen;)



Antwort von brockerdocker:

So I've always in the sound with Ogg Vorbis VBR compressed and thus fairly good results erziehlt (Kontainerformat:. mkv). Funny, I found synonymous, short videos that I will have relatively small, but the longer the videos were, the relatively larger the files.
(this means you can not expect high of three per 1min = 1MB 60min = 60MB?)
Can this really quantizer setting somewhere? I can always just set the desired size and since then, the net often turn.



Antwort von LarsProgressiv:

Hello brockerdocker,

So I have your movies with avidemux
Avi-Kontainer:
1,5M A2.avi

and im Matroska-Kontainer:
612K A2.mkv

Die Inhalte sind identisch. Also sollten die 1,1MB mehr im AVI nur Kontainer-Ballast sein.

Bei längerem Film relativiert sich der Kontainerballast etwas.

Hier eine of mir mal gegebene Instructions zum Programm:
http://forum.slashcam.de/sinvolle-xvid-divx-komprimierung-vt66502.html
but you need the following settings:

Double-pass video size
Target size = 1MB video (or whatever you need)

Movement Accuracy 6
Vhq Mode 4
I-picture interval 1-250
Number of Figures 3-B
Qpel yes
GMC yes
BVHQ yes
Pixel aspect ratio "as Input

Quantization type MPEG
Trellis Quantization yes

As an audio format, I usually Vorbis, I have often synonymous in mono, if the raw material not being made sensible:

Vorbis:
Mode qualitätsbasiert
Quality 3
(more worthwhile for most DV cams really are not, rather less)

Regards
Lars



Antwort von brockerdocker:

Hi,
Thank you first time, I bin dann mal s.testen ...
Many greetings,
brockerdocker



Antwort von LarsProgressiv:

Addendum:

The movie is the biggest part of the picture static. It is a size adjustment at 320x240 may not be necessary.

Regards
Lars




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