How to watch videos on Youtube in offline or without internet connection

How to watch videos on You-Tube offline or without internet connection?

youtube.com

How to watch Youtube videos on Android  or iOS smartphones in offline mode.

To view YouTube videos  offline without internet, than first you have to open the YouTube app on your Android or iOS smartphone.

1 - Visit the type of video you want to download.

2 - Choose the desired resolution you want for your video and click OK.

3 - Look for the download option or Add to Offline icon below the video. In some type of copyrighted videos, if the video is not available for offline viewing, it will have a crossed Add to Offline button. But You cannot download such type of video to your offline mode, you can download such type of videos from external App or website, like savefrom.net etc.

mobile screenshot

4 - Than go to the homepage & here it will show you all downloaded videos list which you can watch anytime without an internet or mobile connectivity. Just click on the video & start watching.

mobile screenshot

The video downloaded from the Youtube App can only be played offline for up to 48 hours. After this, you will have to find a working Internet connection & re-sync the video with YouTube app for any changes and availability status, but after recent update in this App the video’s you have downloaded for offline viewing, will be getting automatically re-sync’s which only takes few seconds.

Camera structures inside smartphone hardware board & How it works?

Camera structures inside smartphone hardware board

techspot.com

Almost all smartphones come with a Front-facing and Rear-shooting camera.

A smartphone comprises up of three main parts:

The sensor which detects light

The lens the component in which light comes through & the image processor

How it works actually?

1 -The user or smartphone focuses the lens

2 -Light enters the lens

3 -The aperture determines the amount of light that reaches the sensor

4 -The shutter determines how long the sensor is exposed to light

5 -The sensor captures the image

6 -The camera’s hardware processes and records the image

The megapixels on the smartphone are still an important part of the camera, it carries less importance than it did a while back. Instead, the primary limiting factor is the camera sensor of the phone and how sensitive it is when light passes through the lens.

digitaltrends.com

Each sensor behaves very differently in a different smartphone, so every single image or video that you capture will be a variation of contrast, color accuracy, saturation and several others compared to a different handset. Most camera apps have manual settings so you can capture an image or video based on your own settings, but most devices don’t have such an extended list of controls.

Since smartphones have small sensor sizes, they tend to perform badly in low-light areas. This is an area where camera sensor manufacturers have worked incessantly to improve considerably, but they have a long road ahead of them it appears.

How focusing works?

A mechanism that restricts how much light passes through the lens and into the camera itself in order to control what’s called depth of field, or the area of the plane that appears in focus. The more your aperture is closed in, the more of your shot will be in focus, and the more open it is, less of your total image will be in focus. 

wikipedia

Wide open apertures are in photography because they allow you to take photos with a awesome blurry background, highlighting your subject while narrow apertures are great for things like macro photography, landscapes, portraits etc.

The ƒ-stop is a ratio of the focal length divided by the aperture opening. For example, a lens with a 50mm focal length and an opening of 10mm will be listed as ƒ/5. This number tells us a very important piece of information: how much light is making it to the sensor.

WARNING You will get a Police warning for WhatsApp Group admins

You will get a Police warning for WhatsApp Group admins

thebuzzingstory.com

The police of Maharashtra are issuing warnings to 'admins' of WhatsApp Groups  that they should ensure that no objectionable content is circulated on the group. Admins or administrators are the ones who control, who can be part of a WhatsApp chatting group. Multiple persons can be admins for one group that you know.

They have issued a letter to all police stations, asking them to summon WhatsApp group admins in their areas in person, and tell them that they should avoid such content in the group. Parbhani Sub Divisional Police Officer Sanjay Pardeshi told over phone today.

scroll.in

"We are asking group admins to monitor the content the members post," as they said. Posts on WhatsApp groups should not have any derogatory content text, audio or pictures & video clips about iconic or historical figures, places of worship, anything that may hurt religious sentiments, or anything promoting sedition or social disharmony, says the letter sent by the authorities to police stations in the district.

If any admin finds such a post on the group, it should be reported to police, Pardeshi said. District Superintendent of Police Dilip Zalke told that police took this step after incidents of defamatory content going viral through WhatsApp were reported recently. Even to forward such a content is a crime, he said.

sakaltimes.com

If Any Objectionable or Harmful to Society content is found to be circulated on a WhatsApp group, offences under the IPC as well as the Information Technology Act will be registered, Pardeshi said.

Differents types of IC (integrated circuit) in your smartphone or in pc

Differents types of IC (integrated circuit) in your smartphone or in pc

commons.wikimedia.org

Old phones had ICs more than latest phones. However when you get complete idea about that ICs then you will be able to find solution for damages in your phone properly.

1 -Power Amp

This is a very important IC for Transmiting signal (Tx) in your phone. This IC is work as a Tx amplifier and it get high voltage directly from the battery. When it is damage we can see following faults.

Signal Drop

No Network or Access

Battery low quickly

Cant make a call

Power on failure

Phone will heat

2 -Antenna Switch

Antenna switch is help to filtering frequency Bands as 900Mhz , 1800Mhz and connect Rx ,Tx( Receiver and Transmitter). Therefore when damage this IC we can see faults as following.

Signal Drop

No Network found

Some Frequency band are not worked properly

3 -RF Processor ( Hagar IC)

RF( Radio Frequency ) Processor is a main IC in your phone PCB. This IC is used for processing Rx and Tx signal ( for Modulating and Demodulating). sometimes it make a low frequency clock signal is used to start CPU functions. Therefore when damage this IC we can see faults as following.

Power on failure

Signal drop

No network

Caller drop

Rx or Tx or both are not work properly

Battery empty quickly and phone will heat

4 -Power IC

Power IC distribute current to all the components and IC in PCB. we can think that, it is work as voltage regulator therefore if it is worked not properly phone will not be power on. specially we can see some times some applications are not worked because of Power IC is damage.(when power ic not distribute current for circuits that circuits are not worked).

Power on failure

Battery empty quickly

Phone will heat

Insert Sim

No Charging

Some applications are not worked properly

Auto Restart

5 -CPU (Central Process Unit)

Central Process Unit is the brain in your mobile phone and controller all commands which we have given. Specially this IC check flash IC before booting mobile phone after that it will give command to Power IC. When it damages we can see following faults.

Power on failure

Auto Restart

Commant not accepted

KeyPad not working

Battery empty

Phone will be heat

Phone will stuck

6 -Charging IC

This IC is not a common IC among latest phone. However it is used for controlling charging.when it is damage we can see charging faults like these No charging , Not Charging , Auto charging or Charger not support( Bad contact charger). Nowadays Power IC ( UEM) working as a charging controll IC.

7 -Flash IC ( ROM or EEPROM)

This IC holds flash or booting information(program). When this IC damage we can see software problems in your phone as follwoings.

Power on failure

Booting faults.( only booting screen)

Phone will stuck

Battery empty quickly

Some applications are not worked( camera ,Mp3,Video Bluetooth etc

Phone work as a unconditional

8 -VCO(Voltage Controll Oscillator)

VCO is the RF signal generator. It makes clock frequency which is used to run digital components. When this IC is damaged digital components fail to work and the result is power on failure.

Power on failure

Signal faults

9 -SIM IC

This IC is used for controlling SIM card data. when it is damage you can see following faults. This is a crystal IC because of that when fallen down your phon like this IC will be damage easily. Therefore we can say following faults are common faults in nowadays.

Insert Sim

unablet to power on with sim card

Sim not accepted.

10 -Key Pad IC

This IC is used for Controlling Key pad circuit.We can see this IC as crystal and normal type.because of that when fallen down your phon like this IC will be damage easily. Therefore we can say following faults are common faults in nowadays.

Key pad not work as a order

Key pad stuck

When power on one key is dialing continuously

When press a key phone will shut down or restart

Key pad work as a unconditional

11 -LCD Light control IC

This IC is used for controlling keypad and LCD lights. We can see this IC as crystal and normal type. when this is damaged we can see following faults.

Key pad lights not work

LCD lights not work

White Display

Display not work

How future smartphone images will look like in 2040 or 80

How future smartphone images will look like in 2040 or 80?

quertime.com

Most of the smartphones in future will be in transparent in design, All controls will be in one single device from radio to car &  land to sky. Than education will be the must to know how technology actually works.

All companies will be Automated controlled by technology by sitting at Home Easily, there will be no single person working in, all workers will do their jobs by  just sitting with advanced level of gadgets in their hands. Their will be no school, colleges etc.

theverge.com

sky-technology.eu

3D Holographic movies you can watch easily 

answer-4u.com

Foldable smartphones

youtube.com

How does Auto focus or focus works in DSLR camera

How does Auto focus or focus works in DSLR camera

reikanfocal.com

Focusing means concentrating on single object in an image and blurring remaining area. The autofocus (AF) systems in our DSLRs camera on a daily basis, they are one of the most important aspects of our cameras.

Basically there are 2 types of focusing systems,

1 -Phase Detection AF

2 -Contrast Detection AF & Dual Pixel AF

www.exclusivearchitecture.com

1 -Phase Detection AF

The most common type of AF in DSLRs today is Phase Detection AF. Phase detection is achieved by dividing the incoming light into pairs of images and comparing them by its mechanics & electrically.

If an image in out of focus then the two images will not line up, & based on how far off they are, the camera knows which way to focus the lens to achieve that perfect sharp focus with its artificial intelligence. But hopefully you get the idea. Check out this how it works through below given diagram.

www.exclusivearchitecture.com

2 -Contrast Detection AF

Contrast Detection AF is another common AF system found in DSLRs like Canon and Nikon DSLRs. When they are in live view or video mode Contrast Detection is its primary form of AF.

Auto Focus systems measures the contrast difference between pixels on the sensor, which naturally increases with perfect focus.The problem with this kind of AF is that it does not involve any actual measurements and in bad lighting conditions it can be thrown off,  this all leads to contrast detection AF systems being much slower than phase detection AF systems.

youtube.com

3 -Dual Pixel CMOS AF

In a Dual Pixel CMOS AF sensor, two photo-diodes are distributed to each micro-lens. With Dual Pixel CMOS AF, signals from these two images are used to carry out phase-difference detection AF. In addition, by combining two photo-diodes, the image signal can be output as one pixel. This is mostly used in Canon EOS 70D digital SLR, Nikon AF-S Nikkor 24-70mm f/2.8G ED etc.

What is mean by Graphics Processing Unit (GPU)? & How it works??

What is mean by Graphics Processing Unit (GPU)? & How it works??

geforce.com

GPU stands for Graphics Processing Unit. It is a processor controls solely to graphics processing operations or “floating point” calculations. Its main function is to lighten the load on the CPU i.e. (Central Processing Unit), specially when running graphics applications like High End games FPS or 3D graphics apps.

community.arm.com

microsoftpressstore.com

The GPU does not differ too much from a CPU, but  its construction is much more optimized towards the efficient calculation of graphical information. Therefore, if you were to ask your GPU to perform anything other than graphical tasks, it would suddenly become an ineffective.A GPU normally has multiple cores, each doted with L1 and sometimes L2 cache. A GPU chip is capable of both integer and floating point execution.

pcgamer.com

For example, consider a High ends FPS 3d game, in this GPU case, it will be responsible for creating graphics, textures and colors within the game, while the CPU does not run the graphics, & it can use its resources for artificial intelligence or calculations of the playing games mechanics.

libguides.nus.edu.sg

Thank you all.