What is suspension

I was about to give my car Fiat Palio for servicing and, I knew something was not good about my shock-absorbers or suspension. So, to understand the mechanism better... I went through a few pages on web. This what I saw...

http://www.carbibles.com/suspension_bible.html

Let's talk about HD

Hi Shirish,

Mast re... Ekdam uuche prashna vicharle ahes tu....

You will have nearly all the answers here: http://en.wikipedia.org/wiki/HD_video

A few quick answers inline, in the mail below. :) After reading this you will be enlighten :) There is not of jargon in there, but the whole idea is HD will give you an awesome quality of video. Even if you just ignore all this jargon stuff, just record a small clip from an SD and an HD and see the difference, in color, contrast, and sharpness.... you will love HD.

I have spent quite some time writing this email and with your due permission, I want to put this thread into my blog, http://pramodgoggi.blogspot.com

Regards,
Pramod

On Tue, May 27, 2008 at 2:26 PM, wrote:

Pramod,

Thanks for the info.I had a look at the models u have mentioned below, and I have some questions. Pls let me know if u have answers / pointers to the answers for these.

1. Exactly what image quality diff is there between the ‘Secret desire’ video and commercial cam video? Was it in terms of fps (Frames / Sec) and/or resolution?

Not just about 'Secret Desire', but to talk SD vs HD --->
Both resolution and fps, SD works on 720x480, fps:i30 at max (480i30). Where HD works on 720p28 or 1080i50 or 1080p30... etc

Where:
p: progressive scanning
i: interlaced

Please read p and i, on the website.

25p fps = 50i fps

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2. What’s the FPS for commercial quality video? I think it’s 25 fps for PAL and 28 FPS for NTFS, pls correct me. Where does 30 FPS video fall in this scenario?

NTSC and PAL are standards, predominant for viewing, Don't record video at those resolution, convert them into NTSC or PAL for viewing. Just get the resolution and fps stuff clear for video recording... And I would suggest record in HD :)

I like this image from the same site

See this image: http://upload.wikimedia.org/wikipedia/commons/a/a2/Common_Video_Resolutions_2.svg

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2. I understand that HD standard renders video in a resolution of different dimensions than standard video. What’s the screen size for each frame of HD video? What’s the frame rate? Is it again different like NTFS and PAL?

HD 16:9 aspect ratio. NTSC and PAL are SD (Standard Definition) 4:3 aspect ratio

Size is given above. Frame rate can be anything above 24p... that's just fine.

I personally want to record a slow motion video at 240fps and convert it into 50fps, and majja bagachi ahe... ki how does a high-def slow motion video looks like!!! :)

1. 
   
2. There are 2 high def video standards – HDTV and Blu-Ray. Does HD video on the camcorders mentioned below support both of these? Since Blu-Ray is Sony specific, will Sony cams support HD mode as compatible to Blu-ray only?

Blu-Ray is disc format. HD is video standard. HDTV is television standard. A Blu-ray disc can store an HDVideo that can be viewed on HDTV.... Kitti confusion kela ahe re Sony ni!

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2. The reviews for below mentioned camcorders do not mention frame rate and lines per screen (which, according to my understanding is close to 1080 lines /screen in case of commercial quality videos). Can you elaborate?

1080 line is HD.. right... anything above 24p fps is just fine. Elaborate....by now you must have already know many things.

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2. If the HD video supported by camcorders mentioned below an ‘authentic’ HD video (in terms of lines per screen / frame rate / resolution), or a stripped down version? If it’s authentic, what does a commercial HD cam possesses in terms of video quality, which these do not have?

A movie or commercial documentaries are made on 'film', this is something like a 35mm camera file, include slots of audio, etc etc... So each film will contain one frame :), imagine how big a 3 minutes documentary will be :)... and imagine the quality!!!

I understand your question... commercial HD cam's... Well its something like comparing:
1. mobile phone camera (8 Megapixel)
2. A digital SLR (8 MegaPixel)

Even though both are producing a 8 MegaPixel image... that doesn't mean they are having the same quality of image. Its just that the size of end-pixel are same, but the quality of the image will depend on many parameters... like lens, aperture size, medium storing this data.. etc..etc. So HC9 costs 50K in India is the basic HD handycam, while there are Rs.5Lack HD camera that give professional quality. On a different note....believe me HC9 is an amazing handycam.

There are no HD DVD cameras (only blu-ray disc's and other that are extremely costly). And its said that our dear old Mini-DV (tape) is the best medium to store high quality videos. Surprisingly, people buy a HDD (Hard-disk drive) or DVD handycams for nearly 50k, but people aren't aware that a HD handycam of the same price will deliver outstanding results. But, they are cosumers, not amateur short-film makers :) Anyways... HD HC9 is not available in Pune, because there are not customers for this camera :( :)

Also it will be huge pain editing these video, as you will require higher configuration PC's :)

Have a great time reading about videos and filming awesome short-films

Cheers,

Shirish Deshpande

From: Shirish [

fyi ------------- Hi Preetam, The handycam details that I promised to send..... these are just my scratchpad details, see if you can make sense of these details. Sony HDR-HC9 or Canon Hv30, is a decent enough camera to start with a short-film ------------- HD handycams: -------------- Profession : -------------- $5000 --> Sony HDV V1 --> Profession HD http://www.youtube.com/watch?v=2hKv7xqhdhc http://www.youtube.com/watch?v=qayetW8rflI [setup] http://www.youtube.com/watch?v=9FPAsZnPB40 [ Slow motion ] $4000 -->Sony HDR FX7 -------------- Pro-Consumers --------------- $900 - $1000 --> Sony HDR-HC9 http://www.youtube.com/watch?v=nwJG8kgRy5g http://www.tigerdirect.com/applications/searchtools/item-detailsInactive.asp?Sku=S08-3424&SRCCODE=WEBTV&CMP=OTC-WEBTV $1000 --> Canon HV30 http://www.youtube.com/watch?v=74LH8khNYPA --------- Misc: ------------ $1000 --> Sony HDR-HC7 --> Pro consumer camera $800 --> Sony HC3 --> Consumer HD camera http://reviews.cnet.com/digital-camcorders/sony-handycam- hdr-hc3/4505-6500_7-31749257.html $1300 --> Sony Handycam HDR-SR7 (Hard-disk) http://reviews.cnet.com/digital-camcorders/sony-handycam- hdr-sr7/4505-6500_7-32427828.html?tag=also Sony HDR SR1 ----- -- Regards, Pramod Goggi

Out-of-Office

I am using 2 email accounts and wanted to auto-forward from one emails to other.

Link

Let's talk about Linux

http://nixcraft.com/

Did you have this problem that you want to collect data from multiple Linux box and consolidate / automate a few stuff... I sure had this issue. A few resolution are here:

Link

Quick steps (Command to run from the box you need to write your script):

> ssh-keygen -t rsa
> scp .ssh/id_rsa.pub 'user'@'machine_address':.ssh/authorized_keys2


Linux commands: a practical Reference
I love this reference, surely helpful:
http://www.pixelbeat.org/cmdline.html

VI Editor

I was not sure if I had the VI Editor common commands list in my blog, this help people who are uncomfortable working in UNIX/Linux and the vi editor

http://www.eng.hawaii.edu/Tutor/vi.pdf

Send email from UNIX box

Automated email sending from Unix command line. We have been doing this from year, this page is a good reference, for attachments handling.. etc

http://www.shelldorado.com/articles/mailattachments.html

Happy scripting