Question 1

One of the most important things a media container does is arrange and interleave the data so that the audio and video play out synchronically.

Accepted Answer

Media containers such as MP4, AVI, and MOV organize the audio, video, and other data into a structured format that allows playback devices to synchronize playback of the different streams.

Question 2

One hint that seems pretty universal is that the file extension for a media file is the container format it is using.

Accepted Answer

Generally, the file extension of a media file gives a clue about the container format that it is using. For example, .mp4, .avi, .mov, .mkv are some common file extensions that indicate the container format. However, there are some exceptions where the file extension may not accurately reflect the container format.

Question 3

MPEG-3 is the most common digital multimedia format used to stream video and audio at much lower data rates and smaller file sizes than the previous MPEG-1 and MPEG-2 schemes.

Accepted Answer

There is no such thing as MPEG-3. The correct format is MPEG-4, which is the most common digital multimedia format used to stream video and audio at lower data rates and smaller file sizes than the previous MPEG-1 and MPEG-2 schemes.

Question 4

The newest video compression standard, H.265, uses a delivery container called DivX. It can support 8K Ultra High Definition television and resolutions up to 8192 x 4230.

Accepted Answer

The answer of The newest video compression standard, H.265, uses...

Question 5

MP3 is a lossy compression and encoding scheme for digital audio, which is replacing AAC (Advanced Audio Coding).

Accepted Answer

AAC (Advanced Audio Coding) is a more advanced and efficient compression and encoding scheme for digital audio than MP3. AAC is currently the most commonly used format for digital audio files.

Question 6

The process of moving media between containers, for example when wanting to use camera files on an editing system, is referred to as&#10;A) re-wrapping&#10;B) insertion&#10;C) scaling&#10;D) compressing

Accepted Answer

The process of moving media between containers without changing the underlying codec or compression is referred to as re-wrapping. This preserves the quality of the media and allows it to be easily used on different systems or software. Insertion refers to adding additional media into an existing project, scaling refers to adjusting the size of media, and compressing refers to reducing file size through data compression.

Question 7

The word codec is derived from .&#10;A) encoding&#10;B) compression&#10;C) decompression&#10;D) both B and C

Accepted Answer

The term "codec" is a combination of the words "coder" and "decoder," which refers to the process of compression and decompression. Therefore, the best choice is D, as it encompasses both compression and decompression.

Question 8

Codecs used to capture images come in many forms from camera phones through cameras designed for digital cinema quality. These are most often&#10;A) acquisition codecs&#10;B) post production codecs&#10;C) mezzanine codecs&#10;D) digital distribution codecs

Accepted Answer

Codecs used to capture images are known as acquisition codecs. They are specifically designed for capturing and encoding video or images in real-time as they are captured by cameras or other devices. Post-production codecs are designed for editing and processing video footage after it has been captured, while mezzanine codecs are used for intermediate processing between different stages of production. Digital distribution codecs are used for compressing video files for distribution over the internet or other digital distribution channels.

Question 9

Codecs such as Avid's DNxHD and Apple's Pro Res are both Intraframe&#10;A) audio codecs&#10;B) post production codecs&#10;C) mezzanine codecs&#10;D) digital distribution codecs

Accepted Answer

The answer of Codecs such as Avid's DNxHD and Apple's...

Question 10

In addition to audio and video tracks, QuickTime files also support tracks for&#10;A) timecode&#10;B) text&#10;C) effects information&#10;D) all of the above

Accepted Answer

QuickTime files support tracks for timecode, text, and effects information, in addition to audio and video tracks.

Deck 19: Managing Video Files