Video Codec Comparison: Technical analysis of popular codecs

Free Download Mp4Gain

Video Codec Comparison: Technical analysis of popular codecs

Video Codec

Comparing Video Codecs: In-depth Look

When I first started working with video, I was confused by all the different codecs out there. It’s essential to understand the technical aspects of each codec to make informed decisions. In this section, we’ll dive deep into the world of video codecs and compare their performance, compression efficiency, and compatibility.
One of my favorite quotes from the movie “The Social Network” is, “The internet is not written in pencil, it’s written in ink.” This quote reminds me of the importance of choosing the right codec for your video projects. A poor codec choice can lead to compatibility issues and poor video quality.
I’ve had my fair share of experiences with various codecs, and I’ve learned that it’s crucial to consider factors like bitrate, frame rate, and resolution when comparing codecs. These factors can significantly impact the final video quality and playback performance.

Analyzing Top Video Codecs: A Technical Perspective

In my experience, some of the most popular video codecs include H.264, H.265 (HEVC), VP9, and AV1. Each codec has its strengths and weaknesses, and understanding these differences can help you choose the best codec for your project.
H.264 is widely supported and offers good compression efficiency, making it a solid choice for most applications. However, it may struggle with high-resolution content and require higher bitrates to maintain quality.
On the other hand, H.265 (HEVC) provides better compression efficiency than H.264, especially for high-resolution content. But it’s not as widely supported and may require more processing power for playback.
VP9 is an open-source codec developed by Google, offering similar compression efficiency to H.265. It’s well-suited for web streaming but may not be as widely supported as H.264.
Lastly, AV1 is a newer open-source codec that promises even better compression efficiency than H.265 and VP9. However, it’s still in the early stages of adoption and may not be supported by all devices and platforms.

Video Codec Showdown: A Technical Breakdown

When comparing video codecs, it’s essential to consider factors like compression efficiency, playback performance, and compatibility. In my experience, I’ve found that newer codecs like H.265 and AV1 offer better compression efficiency, which can result in smaller file sizes and lower bandwidth requirements.
However, these newer codecs may require more processing power for playback, which can be a concern for older devices or slower internet connections. Additionally, compatibility can be an issue, as not all devices and platforms support the latest codecs.
In the end, it’s crucial to weigh the pros and cons of each codec and consider your specific needs and target audience. For example, if compatibility is a top priority, H.264 may be the best choice, while H.265 or AV1 might be more suitable for high-resolution content or bandwidth-limited scenarios.

Final Words

Choosing the right video codec can be a daunting task, but understanding the technical aspects of each codec can help you make an informed decision. In my experience, it’s essential to consider factors like compression efficiency, playback performance, and compatibility when comparing codecs.
If you’re looking for a tool to help you with video conversion and normalization, I recommend checking out mp4gain. It’s not free or open-source, but it’s a powerful solution for working with various audio and video formats, including an integrated equalizer. It runs on Windows and can be a valuable tool for managing your video projects.

Free Download Mp4Gain

Mp4Gain Main Window

Mp4Gain Features

Free Download Mp4Gain

Normal bit rate for 1080p. Video encoding for Youtube

Normal bit rate for 1080p. Video encoding for Youtube.

Encoding for YouTube

This is a technical article. For non-specialists, we will give you a tip right away: to export videos to Youtube, it would be best to look for a template for youtube in your editing program.

Encoding for YouTube

Since 2005, when YouTube appeared, video compression technologies have improved a lot and YouTube has changed the formats in which video is transmitted several times. Now video uploaded to youtube is recoded, stored on servers and displayed to the viewer in H.264 / AVC, WebM / VP9, WebM / VP8, H.263 / Sorenson Spark, H.263 / formats Simple. It makes no sense to encode videos independently in all these formats and all resolutions, youtube does it for us automatically.

The first step is to make the project with the correct parameters
If you are making a video with the aim of publishing it on the Internet, then the first and reasonable way to start a project in your editing program with parameters corresponding to the requirements of youtube (the main thing is that the resolution of the video and the frame rate match: you need to see what vertical and horizontal dimensions of the source material, choose from the standard youtube sizes the one that best suits the parameters of the source material, and in your editing program make a new project with the selected parameters for youtube ).

For example, you have shot a FullHD video with 25 frames per second, in this case you are doing a 1920 x 1080 project, 25 fps, with progressive scan. Second, the option is to mount the project with the parameters corresponding to the source material and export with the settings on YouTube. For example, for HDV camcorder video with dimensions of 1440 x 1080 with one pixel spread, you can create an HDV project, and when exporting you can simply select Full HD 1920 x 1080 dimensions with one pixel square. The third option is to make a video with some own parameters and youtube will transform it by yourself, but if the proportions are distorted, black bars or a black frame appear, then these will be the consequences of your decision. For example, you have a project with the aspect ratio of a widescreen movie, so you edit and export it at 1920×816 or 2560×1080. Another example, you shoot a vertical video and hope that it will also be viewed on mobile devices …. YouTube is moving in this direction, but knowing that it will look different on your phone and on TV is your conscious choice.

Even if you encode the video with compliance with the recommended parameters, when uploading it to YouTube, it may look a little different from your computer. You need to understand that flash player or html5 player can work in browser, each of them can be different version, use or not use video card hardware acceleration. Also, the files played by the player can be h.264 and webm formats. For these reasons alone, the same video can be viewed differently in different browsers on the same computer, and on different computers, different operating systems, different video card drivers, different versions are added flash. Also, videos uploaded to another video hosting service, for example vimeo, will be transcoded differently and played through another player.

You can download avi, mov, mp4, mpg, webm and other formats. These formats are containers in which compressed video with very different codecs can be stored. That is, if an avi or mp4 file is played on your computer, this does not mean that youtube will accept it. Therefore, we will consider only one option: the mp4 container with the h.264 codec.

Youtube player on computer plays video only in 16×9 aspect ratio window, for videos with other aspect ratios, youtube itself adds black bars on the sides as needed. Therefore, you do not need to do it yourself. To avoid black bars, use the following frame sizes (video resolution):

4320p: 7680 x 4320;
2160p: 3840 x 2160;
1440p: 2560 x 1440;
1080p: 1920 x 1080;
720p: 1280 x 720;
480p: 854 x 480;
360p: 640 x 360;
240p: 426 x 240.

Packaging: MP4
Audio codec: AAC-LC; sampling frequency: 96 or 48 kHz; bit rate 384 kb / s for
stereo video codec: H.264, progressive scan (not interlaced; if you have 1080i video, you must convert it to 1080p so there is no “comb”); High profile; variable bit rate with no limitation on maximum size; 4: 2: 0 color subsampling; the frame rate must match the frame rate of the original video, 24, 25, 30, 48, 50 and 60 frames per second are supported, but you can make videos with other rates.

What are the most used video formats?

Choosing audio and video codecs and containers affects video quality and file size. Here we show you how to find the format that best suits your needs.

Decades and decades of developments in the audiovisual field have led to a result that, in some way, can be considered curious. While in other sectors, continuous development has led to a very marked standardization (think of the .doc or .pdf format), in multimedia the situation is at least compound.

An example is the world of audio formats, animated by strong “competition” and a multitude of available options. It is no less than that of video formats, in fact. In this case, in fact, we have to deal with a division between codecs and containers (we will see in a moment what they are and what function they perform) that ends up complicating things even more. Therefore, in case you want to convert a movie, you have to be careful to choose the correct codec and the correct video format, to avoid creating files that are too large or simply unreadable. In short, the error is just around the corner.

Differences between containers and codecs

Before analyzing the situation and seeing what are the most used video formats, it is necessary to clarify some fundamental concepts: first, what is the difference between the codec and the container. If in the audio world, the codec used to digitize the audio track matches the “final” file format, in the video, on the other hand, the codecs used are different from the file format that the video file will assume at the end of the digitization process. The reason is soon explained and lies in the multimedia nature of a video.

A movie, in fact, contains video and audio data: the conversion or playback software must be able to analyze both multimedia streams, and therefore will need different algorithms that work in one or another type of data stream. Codecs do exactly this: as the name, code, and decoding of data (audio and video) are made from movies, so you can convert them to another video format or play them back with a media player. Even with regard to containers, it is enough to resort to the literal meaning of the word: these are files that contain both the video and audio sequences within them and “make them available” to codecs for reading and playback.

What are the most used codecs?

A codec, as mentioned, is in charge of compressing and decompressing the video files and determines how they are played on the screen of the PC or smart TV. Each operating system provides the user with dozens and dozens of different codecs, each useful for encoding and decoding a specific type of file, even if a new one can be installed by downloading special software or packages from the web. Among the most used codecs we find the FFmpeg, Divx, Xvid, H.264 and its evolution H.265, VP9 and VP 10 (also known as the name of the Google codec).

-Divx and Xvid. As the name also suggests, these are two “mirror” codecs, created in the late 20th and early 21st centuries to meet the initial demand for online multimedia content. Since bandwidth and browsing speed were very limited, these are codecs that can guarantee good video quality even at high levels of image compression. In this way, it was possible to obtain files of contained dimensions even with very long movies (such as full movies)

-264 and H.265. Created by the Motion Picture Expert Group, they can be considered as industry standards. Among the most popular and used in all areas (you can find H.264 encoded movies on Blu-ray discs, for example, but also movies downloaded from the network) thanks to its versatility and ability to guarantee an excellent quality ratio / File size. The H.265 codec, in particular, can guarantee, with the same quality, a compression factor twice as high as that of its predecessor: files “treated” with this codec will therefore weigh half compared to their counterparts processed with H.264 codec

-VP9 and VP10. Also known as “Google Codec”, they are the codecs used by the giant Moutnain View to compress and decompress the movies uploaded to YouTube. These are algorithms optimized for online video playback, capable of offering excellent resolution and high quality even with small files. The VP10 in particular is the all’H.265 answer and is designed for resolutions up to 4K
Mpeg-H.