Codec stands for enCOder/DECoder or COmpressor/DECompressor. It is a software or hardware that compresses and decompresses audio and video data streams.
Codec stands for enCOder/DECoder or COmpressor/DECompressor. It is a software or hardware that compresses and decompresses audio and video data streams.
Codec stands for enCOder/DECoder or COmpressor/DECompressor. It is a software or hardware that compresses and decompresses audio and video data streams.
Audio Compression Techniques
a type of lossy or lossless compression in which the amount of data in a recorded waveform is reduced to differing extents for transmission respectively with or without some loss of quality, used in CD and MP3 encoding, Internet radio.
Dynamic range compression, also called audio level compression, in which the dynamic range, the difference between loud and quiet, of an audio waveform is reduced
basic information about image files and why we use lots of kinds image file formats.
Some key terms like pixels, pixel depths, resolution, monochore, grayscale and colored images which will be used in the next sections of the presentation.
Basic compression methods which are used in image compression and give information about lossy/lossles images.
JPEG, PNG, GIF and BMP detailed
This is the subject slides for the module MMS2401 - Multimedia System and Communication taught in Shepherd College of Media Technology, Affiliated with Purbanchal University.
This is the subject slides for the module MMS2401 - Multimedia System and Communication taught in Shepherd College of Media Technology, Affiliated with Purbanchal University.
Multimedia networking:
The term ‘multimedia’ refers to diverse classes of media employed to represent information.
The term ‘Networked Multimedia’ refers to the transmission and distribution of multimedia information on the network
What is Video Compression?, Introduction of Video Compression. Motivation, Working Methodology of Video Compression., Example, Applications, Needs of Video Compression, Advantages & Disadvantages
Audio Compression Techniques
a type of lossy or lossless compression in which the amount of data in a recorded waveform is reduced to differing extents for transmission respectively with or without some loss of quality, used in CD and MP3 encoding, Internet radio.
Dynamic range compression, also called audio level compression, in which the dynamic range, the difference between loud and quiet, of an audio waveform is reduced
basic information about image files and why we use lots of kinds image file formats.
Some key terms like pixels, pixel depths, resolution, monochore, grayscale and colored images which will be used in the next sections of the presentation.
Basic compression methods which are used in image compression and give information about lossy/lossles images.
JPEG, PNG, GIF and BMP detailed
This is the subject slides for the module MMS2401 - Multimedia System and Communication taught in Shepherd College of Media Technology, Affiliated with Purbanchal University.
This is the subject slides for the module MMS2401 - Multimedia System and Communication taught in Shepherd College of Media Technology, Affiliated with Purbanchal University.
Multimedia networking:
The term ‘multimedia’ refers to diverse classes of media employed to represent information.
The term ‘Networked Multimedia’ refers to the transmission and distribution of multimedia information on the network
What is Video Compression?, Introduction of Video Compression. Motivation, Working Methodology of Video Compression., Example, Applications, Needs of Video Compression, Advantages & Disadvantages
Unsure of the aspect ratio for your iPhone? Can’t tell a bit rate from a frame rate? At a loss when it comes to lossy and lossless codecs? Don’t worry, we’re here to help.
In familiar applications such as digital versatile disc (DVD), digital video can be found in digital TV, Internet video streaming, digital high-definition television is defined formula. Digital video sharing digital format all functions, including lossless transmission, lossless storage, easy to edit.Currently in many applications, including video conferencing, video games entertainment, DVD discs, digital video broadcasting. As digital video compression format storage requirements prohibitive, lossy digital video compression technology commonly used as the data transmission rate and a compromise between quality. In this paper, we compare and analyze the MPEG-2 , H.261 and H.264 video compression standards.After the Compression , We get the result that the compression of H.264 is better than other two but it take much time as compare to H.261 on higher cost.
A presentation on the digital preservation of audiovisual materials, including a brief history of media formats and file types, among others. It's a bit of a rushed work, I admit, plus the text designs are not as smooth as before I converted the PPT to PDF format.
➢ Video is a collection of bit-mapped still images (called frames) that are taken one after the other.
➢ When the file is played, these pictures are shown in quick succession to give the impression of a moving image.
➢ The number of frames is called the frame rate and this is measured in FPS (Frames per Second). The standard rate is 25 FPS.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
2. What is a Codec ?
• Codec stands for enCOder/DECoder or
COmpressor/DECompressor
• It is a software or hardware that
compresses and decompresses audio and
video data streams.
3. Why do we need codecs?
• The purpose of codecs is to reduce the size of digital audio
samples and video frames in order to speed up transmission
and save storage space.
• Because video and music files are large, they become difficult
to transfer across the Internet quickly. To help speed up
downloads, mathematical "codecs" were built to encode
("shrink") a signal for transmission and then decode it for
viewing or editing. Without codecs, downloads would take
three to five times longer than they do now.
4. Codec Types : Lossy or Lossless?
• There are two types of codecs : lossy and lossless.
• As the name implies, the lossy codecs shrink the video file
dramatically by dropping detail, like creating a JPEG image
from a RAW photo.
E.g.: MP3, OGG Vorbis, AAC, WMA, AC3, RealAudio,etc
• Lossless codecs lose very little information, if any, and the
resulting files are quite large.
E.g: Wave, AIFF, FLAC, ALAC
6. Audio Codecs:
• Audio codecs (encoder-decoder) are programs that reduce this
file size and can be split into two main categories - "lossy" and
"lossless".
• A "lossy" codec (e.g. MP3, OGG Vorbis, AAC) uses knowledge of
human hearing to try and discard as much of the original audio
signal as possible, whilst attempting to make the audio sound
as close as possible to the original. These codecs typically
achieve a filesize of 10%-20% of the original.
• A "lossless" codec (e.g. FLAC) performs the same function as
"winzip" - i.e. it compresses an audio file without discarding any
of the information. These codecs typically achieve a filesize of
50%-60% of the original filesize, but the audio playback will be
bit-for-bit identical to the original file.
7. Video Codecs:
• Codecs are software that enable your devices (Camera, Editor,
Player) to perform video encoding and/or decoding (think
video compression and de-compression). Obviously the Blu-
ray player needs only to decode a video stream. All these
Codecs are based on standards (often de-facto company
standards).
• All video streams are embedded in multimedia (video)
containers. It is a common misconception that .AVI (Windows)
and .MOV (Quicktime on Macs) already define what kind of
video format it is. These containers include information which
Codec is used in the file. If your system does not have the
proper Codec installed the video won't play.
8. About Video Compression:
• Video compression is clearly our friend because without a lot of
compression we would have a very hard time handling the massive
data we get from a 1080p video stream.
• Think of two mega pixels per frame at 24, 30 or 60 frames per
second (translates to 48, 60 or even 120 mega pixels data per
second). On the flip side, video compression reduces the possible
image quality we can get.
• Overall video compression is about the trade-off between:
• Data volume
• Data storage needs
• Data processing speed (in camera, on computer)
• Image quality
• Detail
• Color
11. Text Codecs
• A Text Codec is a function that transforms text into (when
encoding) or out of (when decoding) another kind of
representation. Usually, the most human-readable
representation is said to be "decoded".
• "Encoders" will turn the (selected or whole) text into
something less readable, "Decoders" try to revert those
effects as good as possible.
• E.g.: ROT-13, Base64, URI Codecs, Unicode Codecs, Case
Encoders, CMML, BiM
12. Codecs and Containers
A container is what we typically associate with
the file format. Containers "contain" the various
components of a video: the stream of images,
the sound, and anything else.
For example, you could have multiple
soundtracks and subtitles included in a video
file, if the container format allows it. Example of
popular containers are OGG, Matroska, AVI,
MPEG.
Codecs are ways of "coding" and "decoding"
streams. Their job is typically to compress data
(and decompress it when playing it back) so
that you can store and transmit files with a
smaller filesize.
Image Source:
http://www.pitivi.org/manual/codecs
containers.html