Hacker News: maxshm

New comment by maxshm in "Elite: "The game that couldn't be written" [video]"

maxshm — Wed, 20 Dec 2023 13:24:01 +0000

What shocked me when I saw Elite for the first time, is the huge number of star systems with their own names, population size and descriptions. I knew there was no way such volume of data in the tiny executable file.

New comment by maxshm in "FastSpring Risk Screening"

maxshm — Wed, 20 Dec 2023 13:19:51 +0000

Also got such email from FastSpring.

I dislike this $150 payment requirement from them!

New comment by maxshm in "The Joy of Computer History Books"

maxshm — Sun, 02 Apr 2023 07:22:02 +0000

Thank you for mentioning Wasniak book! I really enjoyed iWas.

Another great book is “Fire in the Valley: The Making of The Personal Computer” (Second Edition) 2nd Edition by Paul Freiberger (Author), Michael Swaine (Author)

And I like as well a book from Merrill Chapman. “In search of stupidity: Over Twenty Years of High Tech Marketing Disasters”.

New comment by maxshm in "Show HN: Learn Languages When Watching Videos with Ease"

maxshm — Tue, 21 Mar 2023 14:37:45 +0000

I like that the plugin creates my own dictionary. It was the way I learned many words.

New comment by maxshm in "Ask HN: What was being a software developer like about 30 years ago?"

maxshm — Mon, 31 Oct 2022 17:17:31 +0000

I remember Turbo Pascal 3.0, the one that generated COM files for MS-DOS (like EXE files, but about 2KB smaller).

I loved that Turbo.com and COM files 30 years ago!

later I started to use Turbo Pascal 5.5 with OO support and a good IDE.

New comment by maxshm in "Converting a fisheye image into a panoramic, spherical or perspective projection"

maxshm — Tue, 30 Aug 2022 19:27:52 +0000

I have seen these pages few years ago. But I could not find source code for these examples

New comment by maxshm in "Show HN: CCTV Storage Calculator (Jvsg.com)"

maxshm — Tue, 15 Feb 2022 15:22:20 +0000

There are IP cameras with a microSD card slot. A memory card allows you to store the archive directly on the camera itself or duplicate the recording if a failure occurs in the local network. Simultaneously, many Video Management Systems , in the event of a loss of connection, can copy the missing archive from the camera memory card after restoring the network connection.

New comment by maxshm in "Show HN: CCTV Storage Calculator (Jvsg.com)"

maxshm — Tue, 15 Feb 2022 15:18:57 +0000

If you have multiple disks it does worth to use them in RAID5 or RAID6 array.

New comment by maxshm in "Show HN: CCTV Storage Calculator (Jvsg.com)"

maxshm — Tue, 15 Feb 2022 13:38:17 +0000

60 days is another very popular archive depth.

In some countries, for some types of buildings, the archive depth can be regulated by law. These can be buildings with a requirement for anti-terrorist measures, for instance, including sports facilities, facilities with a mass presence of people, and railway striations / airports.

New comment by maxshm in "Show HN: Smart-Crop – removes repetitive blank and empty areas from screenshots"

maxshm — Tue, 15 Feb 2022 10:45:56 +0000

It seems it is very useful free tool!

New comment by maxshm in "Tell HN: Reddit accounts cancellation/suspension caused by VPN usage"

maxshm — Tue, 15 Feb 2022 10:43:36 +0000

Thank you! Forewarned is forearmed

New comment by maxshm in "Show HN: CCTV Storage Calculator (Jvsg.com)"

maxshm — Tue, 15 Feb 2022 10:38:10 +0000

We created a free web based calculator to estimate video archive storage space for your video surveillance system or simply for 1 camera you installed. The calculator also estimates required network bandwidth for IP cameras.

It is a web app (Javascript+React) that runs in a browser or on a tablet or a smartphone.

Presently, the most common compression codecs are H.264 and H.265 . Their advantage is a high level of video compression, which saves space in the video archive. Motion JPEG compression is also supported. And here is a manual for the calculator https://www.jvsg.com/cctv-storage-calculator/

Today we launched the CCTV Storage Calculator on ProductHunt: https://www.producthunt.com/posts/cctv-storage-calculator

Show HN: CCTV Storage Calculator (Jvsg.com)

maxshm — Tue, 15 Feb 2022 10:26:54 +0000

Article URL: https://www.jvsg.com/storage-bandwidth-calculator/

Comments URL: https://news.ycombinator.com/item?id=30344772

Points: 3

# Comments: 6

New comment by maxshm in "Ask HN: Anyone making a living building desktop applications?"

maxshm — Sat, 22 Jan 2022 11:22:05 +0000

That is correct. Only you need a code signing certificate (EV is even better). And renew them every third year.

New comment by maxshm in "Show HN: Security Camera Lens Calculator"

maxshm — Wed, 01 Dec 2021 08:03:27 +0000

Thank you! We were trying our best to make the UI simpler.

New comment by maxshm in "Show HN: Security Camera Lens Calculator"

maxshm — Wed, 01 Dec 2021 08:02:17 +0000

It is possible to add tooltips in a desktop version. But how to show them on a smartphone with touch interface?

New comment by maxshm in "Show HN: Security Camera Lens Calculator"

maxshm — Tue, 30 Nov 2021 06:02:27 +0000

Yes, we plan to add more cameras soon!

New comment by maxshm in "Show HN: Security Camera Lens Calculator"

maxshm — Mon, 29 Nov 2021 20:18:53 +0000

We created Security Camera Lens Calculator with 3D graphics(WebGL) and a built-in camera database.

https://www.jvsg.com/calculators/cctv-lens-calculator/

It is a web app (Javascript+React) that runs in a browswer or on a tablet or a smartphone.

It took our team more than 1 year to complete the calculator.

Calculator functions:

- calculate pixel density (PPM/PPF)

- clearly see dead zones in 3D

- check DORI zones (detection, observation, recognition, identification) based on pixel density calculations and IEC and EN 62676 standard.

- calculate lens focal length

- load a floor map to see camera coverage on your plan

- over 9,000 video surveillance camera models embedded in the CCTV Lens Calculator.

- 12 languages supported.

Today we launched our Security Camera Lens Calculator also on ProductHunt.

We would love to get some feedback. Particularly from people using it to solve real world problems.

New comment by maxshm in "Show HN: Security Camera Lens Calculator"

maxshm — Mon, 29 Nov 2021 19:45:18 +0000

Oops! Thank you!

New comment by maxshm in "Show HN: Security Camera Lens Calculator"

maxshm — Mon, 29 Nov 2021 19:44:01 +0000

Thank you for your feedback and advice!

Wow, it is great to meet a person here who knows about our main desktop software IP Video System Design Tool. To import a floor plan in the lens calculator the user can click on a small house button in the bottom of the screen. Yes the button is not in the toolbar.

This video shows how to import a background image 1:40 https://m.youtube.com/watch?v=NE7eTx1aPpg