Wednesday, March 08, 2006

papers.

Published online: 5 March 2006; Nature Cell Biology
Coordination of microtubule and microfilament dynamics by Drosophila Rho1, Spire and Cappuccino
Alicia E. Rosales-Nieves1, 2, James E. Johndrow1, 2, Lani C. Keller1, 2, Craig R. Magie1, Delia M. Pinto-Santini1 & Susan M. Parkhurst1

"Here, we demonstrate that Capu and Spire have microtubule and microfilament crosslinking activity."

wow.

Monday, March 06, 2006

Comparison of Quicktime (mov) compressions::

Adobe Premier was used for testing

MPEG-4 video or MotionJPEG-B at higher quality, or sorrento3.
File size-wise, MPEG4 is the smallest (e.g. 770k), then Sorrento3 (963k) MotionJPG-B (1231k) is the largest.

sorento (2)
- limit data rate to 100kb/sec
- "quality" does not really matter, 30% is almost equal to 100%
--> small structures disappear.
--> contrast becomes high. 10 point texts cannot be resolved.

sorento3
limit data rate to 100kb/sec
"quality" does not really matter, 30% is almost equal to 100%
---> best quality

MPEG-4 video
-- very poor quality, with "quality" at 30%. at 70%, OK.
-- file size is incedibly small.

MJPG A or B (motion JPEG)
-- vertical lines appear after compresion with 30% quality.
-- with 70% quality, small structures are resolveable.File size becomes more than two times the 30% file.

video codec

I looked for ways to produce .mpg movies and follwoing is a list of related URL. I decided not to make .mpg movies, but informaiton here might be useful for those who want to do similar things.

* Free codecs.com, A great site to look for video encoders/decoders.

* Detailed Explanations on different codecs

* A List of Codecs is at fourcc.org. Very useful

*Stinky's MPEG-2 Codec 1.2.0.79


AviDemux 2.1.1 (free, but windows version seems to be not working well)
"AviDemux is a video editor and encoder which can edit, encode, requantize MPEG and AVI, including DivX. It is almost like VirtualDub, but can also encode to VCD/SVCD/DVD mpg."

MPEG Mediator 1.5
(did not try)
"MPEG Mediator supports MPEG-1 and MPEG-2 streams (Transport Streams are not supported) including AC-3, MPEG and LPCM audio-substreams. MPEG Mediator provides a great amount of flexibility through its use of 'Flask'-style plugins to output the converted video ('Flask' is popular MPEG stream converter)."

YMPEG 3.1a (limited to a 3hrs trial)
YMPEG is an award winning professional codec which can integrate itself with Windows and offers seamless encoding from your favorite application (VFW). This powerful and unique feature of YMPEG makes it possible to encode video from virtually any video applications like VirtualDub, Adobe Premiere, AE, Vegas, DVDx, K!TV etc. (using Windows Compression Manager).

WinMPG Video Convert 6.2.1 (unregistered version overlays texts in the output)

Windows Media Encoder 9.0
http://www.download.com/Windows-Media-Encoder/3000-2140_4-10211788.html?tag=tab_pub
--> outputs WMV formats

Focus Video Converter 2.1
--> saying ts free in "download.com" but actually you have to buy for full seatures.
--> only mpeg1 and 2.

avi2vcd
--> Conversion is fast.The output is mpeg. Outputs with fixed aspect ratios for NTSC, PAL or film.