Kieran  Stroman

Kieran Stroman

1602227461

How ZDF Created a Video PWA with Offline and Dark Mode

Learn how ZDF created a progressive web app (PWA) with modern features like offline support, installability, and dark mode.

When broadcaster ZDF was considering redesigning their frontend technology stack, they decided to take a closer look at Progressive Web Apps for their streaming site ZDFmediathek. Development agency Cellular took on the challenge to build a web-based experience that is on par with ZDF’s platform-specific iOS and Android apps. The PWA offers installability, offline video playback, transition animations, and a dark mode.

Adding a service worker

A key feature of a PWA is offline support. For ZDF most of the heavy lifting is done by Workbox, a set of libraries and Node modules that make it easy to support different caching strategies. The ZDF PWA is built with TypeScript and React, so it uses the Workbox library already built into create-react-app to precache static assets. This lets the application focus on making the dynamic content available offline, in this case the videos and their metadata.

The basic idea is quite simple: fetch the video and store it as a blob in IndexedDB. Then during playback, listen for online/offline events, and switch to the downloaded version when the device goes offline.

Unfortunately things turned out to be a little more complex. One of the project requirements was to use the official ZDF web player which doesn’t provide any offline support. The player takes a content ID as input, talks to the ZDF API, and plays back the associated video.

This is where one of the web’s most powerful features comes to the rescue: service workers.

The service worker can intercept the various requests done by the player and respond with the data from IndexedDB. This transparently adds offline capabilities without having to change a single line of the player’s code.

Since offline videos tend to be quite large, a big question is how many of them can actually be stored on a device. With tje help of the StorageManager API the app can estimate the available space and inform the user when there is insufficient space before even starting the download. Unfortunately Safari isn’t on the list of browsers implementing this API and at the time of writing there wasn’t much up-to-date information about how other browsers applied quotas. Therefore, the team wrote a small utility to test the behavior on various devices. By now a comprehensive article exists that sums up all the details.

#pwa #web-development #programming #developer

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How ZDF Created a Video PWA with Offline and Dark Mode
Easter  Deckow

Easter Deckow

1655630160

PyTumblr: A Python Tumblr API v2 Client

PyTumblr

Installation

Install via pip:

$ pip install pytumblr

Install from source:

$ git clone https://github.com/tumblr/pytumblr.git
$ cd pytumblr
$ python setup.py install

Usage

Create a client

A pytumblr.TumblrRestClient is the object you'll make all of your calls to the Tumblr API through. Creating one is this easy:

client = pytumblr.TumblrRestClient(
    '<consumer_key>',
    '<consumer_secret>',
    '<oauth_token>',
    '<oauth_secret>',
)

client.info() # Grabs the current user information

Two easy ways to get your credentials to are:

  1. The built-in interactive_console.py tool (if you already have a consumer key & secret)
  2. The Tumblr API console at https://api.tumblr.com/console
  3. Get sample login code at https://api.tumblr.com/console/calls/user/info

Supported Methods

User Methods

client.info() # get information about the authenticating user
client.dashboard() # get the dashboard for the authenticating user
client.likes() # get the likes for the authenticating user
client.following() # get the blogs followed by the authenticating user

client.follow('codingjester.tumblr.com') # follow a blog
client.unfollow('codingjester.tumblr.com') # unfollow a blog

client.like(id, reblogkey) # like a post
client.unlike(id, reblogkey) # unlike a post

Blog Methods

client.blog_info(blogName) # get information about a blog
client.posts(blogName, **params) # get posts for a blog
client.avatar(blogName) # get the avatar for a blog
client.blog_likes(blogName) # get the likes on a blog
client.followers(blogName) # get the followers of a blog
client.blog_following(blogName) # get the publicly exposed blogs that [blogName] follows
client.queue(blogName) # get the queue for a given blog
client.submission(blogName) # get the submissions for a given blog

Post Methods

Creating posts

PyTumblr lets you create all of the various types that Tumblr supports. When using these types there are a few defaults that are able to be used with any post type.

The default supported types are described below.

  • state - a string, the state of the post. Supported types are published, draft, queue, private
  • tags - a list, a list of strings that you want tagged on the post. eg: ["testing", "magic", "1"]
  • tweet - a string, the string of the customized tweet you want. eg: "Man I love my mega awesome post!"
  • date - a string, the customized GMT that you want
  • format - a string, the format that your post is in. Support types are html or markdown
  • slug - a string, the slug for the url of the post you want

We'll show examples throughout of these default examples while showcasing all the specific post types.

Creating a photo post

Creating a photo post supports a bunch of different options plus the described default options * caption - a string, the user supplied caption * link - a string, the "click-through" url for the photo * source - a string, the url for the photo you want to use (use this or the data parameter) * data - a list or string, a list of filepaths or a single file path for multipart file upload

#Creates a photo post using a source URL
client.create_photo(blogName, state="published", tags=["testing", "ok"],
                    source="https://68.media.tumblr.com/b965fbb2e501610a29d80ffb6fb3e1ad/tumblr_n55vdeTse11rn1906o1_500.jpg")

#Creates a photo post using a local filepath
client.create_photo(blogName, state="queue", tags=["testing", "ok"],
                    tweet="Woah this is an incredible sweet post [URL]",
                    data="/Users/johnb/path/to/my/image.jpg")

#Creates a photoset post using several local filepaths
client.create_photo(blogName, state="draft", tags=["jb is cool"], format="markdown",
                    data=["/Users/johnb/path/to/my/image.jpg", "/Users/johnb/Pictures/kittens.jpg"],
                    caption="## Mega sweet kittens")

Creating a text post

Creating a text post supports the same options as default and just a two other parameters * title - a string, the optional title for the post. Supports markdown or html * body - a string, the body of the of the post. Supports markdown or html

#Creating a text post
client.create_text(blogName, state="published", slug="testing-text-posts", title="Testing", body="testing1 2 3 4")

Creating a quote post

Creating a quote post supports the same options as default and two other parameter * quote - a string, the full text of the qote. Supports markdown or html * source - a string, the cited source. HTML supported

#Creating a quote post
client.create_quote(blogName, state="queue", quote="I am the Walrus", source="Ringo")

Creating a link post

  • title - a string, the title of post that you want. Supports HTML entities.
  • url - a string, the url that you want to create a link post for.
  • description - a string, the desciption of the link that you have
#Create a link post
client.create_link(blogName, title="I like to search things, you should too.", url="https://duckduckgo.com",
                   description="Search is pretty cool when a duck does it.")

Creating a chat post

Creating a chat post supports the same options as default and two other parameters * title - a string, the title of the chat post * conversation - a string, the text of the conversation/chat, with diablog labels (no html)

#Create a chat post
chat = """John: Testing can be fun!
Renee: Testing is tedious and so are you.
John: Aw.
"""
client.create_chat(blogName, title="Renee just doesn't understand.", conversation=chat, tags=["renee", "testing"])

Creating an audio post

Creating an audio post allows for all default options and a has 3 other parameters. The only thing to keep in mind while dealing with audio posts is to make sure that you use the external_url parameter or data. You cannot use both at the same time. * caption - a string, the caption for your post * external_url - a string, the url of the site that hosts the audio file * data - a string, the filepath of the audio file you want to upload to Tumblr

#Creating an audio file
client.create_audio(blogName, caption="Rock out.", data="/Users/johnb/Music/my/new/sweet/album.mp3")

#lets use soundcloud!
client.create_audio(blogName, caption="Mega rock out.", external_url="https://soundcloud.com/skrillex/sets/recess")

Creating a video post

Creating a video post allows for all default options and has three other options. Like the other post types, it has some restrictions. You cannot use the embed and data parameters at the same time. * caption - a string, the caption for your post * embed - a string, the HTML embed code for the video * data - a string, the path of the file you want to upload

#Creating an upload from YouTube
client.create_video(blogName, caption="Jon Snow. Mega ridiculous sword.",
                    embed="http://www.youtube.com/watch?v=40pUYLacrj4")

#Creating a video post from local file
client.create_video(blogName, caption="testing", data="/Users/johnb/testing/ok/blah.mov")

Editing a post

Updating a post requires you knowing what type a post you're updating. You'll be able to supply to the post any of the options given above for updates.

client.edit_post(blogName, id=post_id, type="text", title="Updated")
client.edit_post(blogName, id=post_id, type="photo", data="/Users/johnb/mega/awesome.jpg")

Reblogging a Post

Reblogging a post just requires knowing the post id and the reblog key, which is supplied in the JSON of any post object.

client.reblog(blogName, id=125356, reblog_key="reblog_key")

Deleting a post

Deleting just requires that you own the post and have the post id

client.delete_post(blogName, 123456) # Deletes your post :(

A note on tags: When passing tags, as params, please pass them as a list (not a comma-separated string):

client.create_text(blogName, tags=['hello', 'world'], ...)

Getting notes for a post

In order to get the notes for a post, you need to have the post id and the blog that it is on.

data = client.notes(blogName, id='123456')

The results include a timestamp you can use to make future calls.

data = client.notes(blogName, id='123456', before_timestamp=data["_links"]["next"]["query_params"]["before_timestamp"])

Tagged Methods

# get posts with a given tag
client.tagged(tag, **params)

Using the interactive console

This client comes with a nice interactive console to run you through the OAuth process, grab your tokens (and store them for future use).

You'll need pyyaml installed to run it, but then it's just:

$ python interactive-console.py

and away you go! Tokens are stored in ~/.tumblr and are also shared by other Tumblr API clients like the Ruby client.

Running tests

The tests (and coverage reports) are run with nose, like this:

python setup.py test

Author: tumblr
Source Code: https://github.com/tumblr/pytumblr
License: Apache-2.0 license

#python #api 

How To Create Dark and Light Mode Website using jQuery

Hello Friends,

In this tutorial i will show you How To Create Dark and Light Mode Website using jQuery.

As you can see many website and mobile applications are provide light theme as well as dark theme to user, It is useful for websites which have long content and requires users to focus on the screen for a long time.

Read More : How To Create Dark and Light Mode Website using jQuery

https://websolutionstuff.com/post/how-to-create-dark-and-light-mode-website-using-jquery


Read Also : How To Generate Barcode In Laravel

https://websolutionstuff.com/post/how-to-generate-barcode-in-laravel

#how to create dark and light mode website using jquery #dark and light mode #how to add dark mode and light mode in website #day and night mode #jquery

How To Toggle Dark and Light Mode using jQuery

Hello Guys,

In this tutorial I will show you how to toggle between dark and light mode using jQuery.

As per the current trend of web development in many websites provides to user for reading select theme like dark mode and light mode or day mode and night mode of website and it’s very easy to implement in website.

In this just write some css code and java script for toggle dark mode and light mode website also you can store in local storage for save the state of user select theme like dark mode and light of website.

Read More : How To Toggle Dark and Light Mode using jQuery

https://websolutionstuff.com/post/how-to-toggle-dark-and-light-mode-using-jquery


Read Also : How Generate PDF From HTML View In Laravel

https://websolutionstuff.com/post/how-generate-pdf-from-html-view-in-laravel

#how to toggle dark and light mode using jquery #dark and light mode #toggle between light and dark mode #jquery #day and night mode #dark mode website

The  NineHertz

The NineHertz

1630909606

How to Hire Video Game Developers For Video Game Development Company?

The gaming industry has taken a boom in the last few years. If we talk about numbers, according to NewZoo, the worth of the video gaming industry was $159.3 Billion in 2020. Video games are not just something for fun now, players and users expect much more from video game developers. Creating such products that just do not satisfy the player’s needs and exceed their expectations is what video game development company are thriving for.

Though kickstarting a new game-making studio is not an easy task. This business requires a team with a huge passion to create games and earn money from these video games. The idea of the approach is to create such unique games that will reach millions of people in the world and gain popularity. This growth demands more professionals in this field.

This just can not be obtained by finding someone with a good CV, the whole process includes a deep dig down to grab the right talent. Read on to learn more about Mobile game developers and the process of hiring video game developers.

Read Complete Blog Here -  https://theninehertz.com/blog/how-to-hire-video-game-developers-video-game-development


#Video Game Development

#Video Game developers

#Video game development studio

#Video game development services

 

Kieran  Stroman

Kieran Stroman

1602227461

How ZDF Created a Video PWA with Offline and Dark Mode

Learn how ZDF created a progressive web app (PWA) with modern features like offline support, installability, and dark mode.

When broadcaster ZDF was considering redesigning their frontend technology stack, they decided to take a closer look at Progressive Web Apps for their streaming site ZDFmediathek. Development agency Cellular took on the challenge to build a web-based experience that is on par with ZDF’s platform-specific iOS and Android apps. The PWA offers installability, offline video playback, transition animations, and a dark mode.

Adding a service worker

A key feature of a PWA is offline support. For ZDF most of the heavy lifting is done by Workbox, a set of libraries and Node modules that make it easy to support different caching strategies. The ZDF PWA is built with TypeScript and React, so it uses the Workbox library already built into create-react-app to precache static assets. This lets the application focus on making the dynamic content available offline, in this case the videos and their metadata.

The basic idea is quite simple: fetch the video and store it as a blob in IndexedDB. Then during playback, listen for online/offline events, and switch to the downloaded version when the device goes offline.

Unfortunately things turned out to be a little more complex. One of the project requirements was to use the official ZDF web player which doesn’t provide any offline support. The player takes a content ID as input, talks to the ZDF API, and plays back the associated video.

This is where one of the web’s most powerful features comes to the rescue: service workers.

The service worker can intercept the various requests done by the player and respond with the data from IndexedDB. This transparently adds offline capabilities without having to change a single line of the player’s code.

Since offline videos tend to be quite large, a big question is how many of them can actually be stored on a device. With tje help of the StorageManager API the app can estimate the available space and inform the user when there is insufficient space before even starting the download. Unfortunately Safari isn’t on the list of browsers implementing this API and at the time of writing there wasn’t much up-to-date information about how other browsers applied quotas. Therefore, the team wrote a small utility to test the behavior on various devices. By now a comprehensive article exists that sums up all the details.

#pwa #web-development #programming #developer