Media formats overview in HTML - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add an image to the webpage.

HTML

<img src="image.jpg" alt="A beautiful scenery" [1]>

Drag options to blanks, or click blank then click option'

Ahref="image.jpg"

Bwidth="300"

Cstyle="color:red"

Donclick="alert('Hi')"

Attempts:

3 left

💡 Hint

Common Mistakes

Using href instead of width for image size

Trying to style color on an image tag

The width attribute sets the image width in pixels or other units.

2fill in blank

medium

Complete the code to embed a video with controls.

HTML

<video src="movie.mp4" [1]>Your browser does not support the video tag.</video>

Drag options to blanks, or click blank then click option'

Aautoplay

Bloop

Ccontrols

Dmuted

Attempts:

3 left

💡 Hint

Common Mistakes

Using autoplay instead of controls

Forgetting to add controls and video has no buttons

The controls attribute adds play, pause, and volume controls to the video.

3fill in blank

hard

Fix the error in the audio tag to autoplay the sound.

HTML

<audio src="sound.mp3" [1]>Your browser does not support the audio element.</audio>

Drag options to blanks, or click blank then click option'

AautoPlay

Bstart

Cplay

Dautoplay

Attempts:

3 left

💡 Hint

Common Mistakes

Using camelCase like autoPlay

Using non-existent attributes like play or start

The correct attribute to autoplay audio is autoplay all lowercase.

4fill in blank

hard

Fill both blanks to create an audio element that loops and is muted.

HTML

<audio src="music.mp3" [1] [2]>Your browser does not support the audio element.</audio>

Drag options to blanks, or click blank then click option'

Aloop

Bcontrols

Cmuted

Dautoplay

Attempts:

3 left

💡 Hint

Common Mistakes

Using controls instead of muted

Confusing autoplay with loop

The loop attribute makes the audio repeat, and muted silences it.

5fill in blank

hard

Fill all three blanks to create a video with controls, autoplay, and muted.

HTML

<video src="clip.mp4" [1] [2] [3]>Your browser does not support the video tag.</video>

Drag options to blanks, or click blank then click option'

Acontrols

Bautoplay

Cmuted

Dloop

Attempts:

3 left

💡 Hint

Common Mistakes

Using loop instead of muted

Missing controls so no buttons appear

The controls attribute shows playback buttons, autoplay starts the video automatically, and muted silences the sound.

Practice

1. Which HTML tag is used to add a sound file to a web page?

easy

A. <audio>

B. <img>

C. <video>

D. <sound>

Solution

1. Step 1: Identify the tag for sound

   The <audio> tag is designed to embed sound files like music or voice recordings.

2. Step 2: Compare with other tags

   <img> is for images, <video> is for videos, and <sound> is not a valid HTML tag.

3. Final Answer:

   <audio> -> Option A

4. Quick Check:

   Sound tag = <audio> [OK]

Hint: Sound files use <audio>, images use <img> [OK]

Common Mistakes:

• Confusing <audio> with <video>
• Using <sound> which is not valid
• Choosing <img> for sound

2. Which of the following is the correct syntax to embed an image in HTML?

easy

A. <img src='image.jpg' alt='Description'>

B. <image src='image.jpg' alt='Description'>

C. <img href='image.jpg' alt='Description'>

D. <img src='image.jpg'>Description</img>

Solution

1. Step 1: Check the tag and attributes for image

   The correct tag is <img> with a src attribute for the file path and an alt attribute for accessibility.

2. Step 2: Validate the syntax

   <img> is self-closing and does not have a closing tag. The href attribute is incorrect for images.

3. Final Answer:

   <img src='image.jpg' alt='Description'> -> Option A

4. Quick Check:

   Image tag uses src and alt attributes [OK]

Hint: Use for images [OK]

Common Mistakes:

• Using <image> instead of <img>
• Using href instead of src
• Adding closing tag to <img>

3. What will the following HTML code display in a browser?

<video controls>
  <source src='movie.mp4' type='video/mp4'>
  <source src='movie.webm' type='video/webm'>
  Your browser does not support the video tag.
</video>

medium

A. An error message because multiple sources are not allowed

B. A video player with controls that plays movie.mp4 or movie.webm

C. Only the text 'Your browser does not support the video tag.'

D. A static image of the video without controls

Solution

1. Step 1: Understand the <video> tag with multiple sources

   The <video> tag can have multiple <source> elements to provide different video formats for browser compatibility.

2. Step 2: Analyze the controls attribute and fallback text

   The controls attribute shows play/pause buttons. The fallback text appears only if the browser cannot play any source.

3. Final Answer:

   A video player with controls that plays movie.mp4 or movie.webm -> Option B

4. Quick Check:

   Video tag with sources and controls shows player [OK]

Hint: Multiple sources provide fallback formats for video [OK]

Common Mistakes:

• Thinking multiple sources cause error
• Ignoring controls attribute
• Assuming fallback text always shows

4. Identify the error in this HTML snippet for embedding audio:

<audio src='sound.mp3' controls>
  <source src='sound.ogg' type='audio/ogg'>
</audio>

medium

A. The type attribute is invalid for audio sources

B. The controls attribute is missing

C. The <source> tag must be self-closing with />

D. The src attribute should not be used on <audio> when <source> is present

Solution

1. Step 1: Understand the use of src and source in <audio>

   When using <source> tags inside <audio>, the src attribute on <audio> should be omitted to avoid conflicts.

2. Step 2: Check other attributes and syntax

   The controls attribute is present, <source> tags do not require self-closing slash in HTML5, and type is valid.

3. Final Answer:

   Using src on <audio> with <source> tags is incorrect -> Option D

4. Quick Check:

   Use either src or source tags, not both [OK]

Hint: Use <source> tags inside <audio>, avoid src on <audio> [OK]

Common Mistakes:

• Using src on <audio> with <source> tags
• Thinking <source> must be self-closing
• Believing type attribute is invalid

5. You want to add a video that plays automatically, loops forever, and is muted by default for accessibility. Which HTML snippet correctly achieves this?

hard

A. <video src='clip.mp4' autoplay muted></video>

B. <video src='clip.mp4' autoplay loop></video>

C. <video src='clip.mp4' autoplay loop muted controls></video>

D. <video src='clip.mp4' loop muted controls></video>

Solution

1. Step 1: Identify required attributes for video behavior

   To play automatically, use autoplay. To loop forever, use loop. To mute sound by default, use muted. Controls help user control playback.

2. Step 2: Check each option for all attributes

   <video src='clip.mp4' autoplay loop muted controls></video> has all: autoplay, loop, muted, and controls. Others miss one or more attributes.

3. Final Answer:

   <video src='clip.mp4' autoplay loop muted controls></video> -> Option C

4. Quick Check:

   All needed attributes present in <video src='clip.mp4' autoplay loop muted controls></video> [OK]

Hint: Use autoplay, loop, muted together for auto-looping muted video [OK]

Common Mistakes:

• Omitting muted causes sound to play unexpectedly
• Forgetting loop to repeat video
• Missing controls reduces user control