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H.264 video codec

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This codec was developed by the ITU (International Telecommunications Union) with the sober name h.26L. In 2001 several consortia and companies joined forces and continued development jointly. Microsoft also participated in the development of H.264.

H.264 CODEC

This video codec is now compatible with numerous companies and end devices, including Adobe and Apple. The H.264 codec is one of the video codecs that has also made the leap to the codecs compatible with Blu Ray and HD-DVD. Well, the quality of this video codec is amazing, but it comes at a price. Very few video bloggers and small businesses will invest in the staggering licensing costs.

H.264 technical characteristics
CAVLC / CABAC encoder
Multiple frames of reference
Intra frames: all types of macroblocks (16×16, 8×8 and 4×4)
Using B frames as frames of reference
adaptive temporal transformation (8 × 8 and 4 × 4)
Custom quantization matrices
Optimization for multi-core processors
Mixed frames of reference for submacroblocks
Alpha and beta unlock filters
Interlaced
Additional H.264 features
Speed control: constant quantization (CQP), constant speed factor (CRF)
Nominal distortion optimization
Customizable B frames
Various motion detection mechanisms (Diamond, Hexagon, Desigual Multi-Hexagon)
Optimized quantization of nominal distortion (trellis)

H.264 levels and profiles

In 2003, the first versions of the H.264 video codec were released with the ITU-T H.264 standard. In this standard, the first 3 profiles were defined for H.264, the baseline, the main and the high profile. Over time, the High 10, High 4: 2: 2 and High 4: 4: 4 profiles were added. These profiles define the encoding parameters to be used, as according to the standard not all features can be used arbitrarily .

Various H.264 levels have also been defined in the ITU-T H.264 standard, which define the maximum video sizes, bit rates, and other parameters such as the number of macroblocks allowed in the H.264 video codec. To create true standards-compliant H.264 videos, visit Wikipedia’s H.264 level overview and adjust its parameters according to your desired level / profile.

x264 is the most widespread derivative of the H.264 codec under the GPL and at the same time command line encoder for the H.264 MPEG-4-AVC video format. It is an open source solution that is available for all platforms such as Windows, Linux, and Unix.

This encoder was developed as part of the VideoLAN project and can be downloaded for free from the project pages at http://www.videolan.org/developers/x264.html.

Technical characteristics x264
CAVLC / CABAC encoder
Multiple frames of reference
Intra frames: all types of macroblocks (16×16, 8×8 and 4×4)
Using B frames as frames of reference
Adaptive temporal transformation (8×8 and 4×4)
Custom quantization matrices
Optimization for multi-core processors
Alpha and beta unlock filters
Interlaced
Additional Features x264
Speed control: constant quantization (CQP), constant speed factor (CRF), single-pass and multi-pass ABR
Mixed frames of reference for submacroblocks
Various motion detection mechanisms (Diamond, Hexagon, Desigual Multi-Hexagon)
Optimized quantization of nominal distortion (trellis)
The encoder supports both 32-bit and 64-bit and multi-threaded platforms, which is particularly interesting for multi-core processors like Xeon, Phenom, or dual-core processors.

The Videcodec x264 also supports the H.264 levels and profiles defined for the H.264 codec in the ITU-T H.264 standard, which define the maximum video sizes, bit rates and other parameters such as the number of macro blocks allowed in the video. To create true standards-compliant H.264 / x264 videos, visit Wikipedia’s H.264 / x264 level overview and adjust its parameters according to your desired level / profile.

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Why is H264 a high quality video standard?

Let’s say you have a very good technology that allows you to have a high quality video using a small bit rate allowing high quality video to be offered to a wide variety of devices, from low-performance mobile phones to Blu-ray devices equipped with Maximum performance

In summary, the H264 is suitable for any platform, from handheld devices to high definition material.

The H264 standard reduces the amount of information needed to play a video.

Its compression system that I explain roughly so that it can be better understood in the video The best codec for editing videos makes you get a more compressed file and that does it along with its versatility of playback on different devices that is the preferred codec to export the final result of our edition.

It’s time for H.264.

Learn how to choose the right coding tool and optimize H.264 encoding for ideal quality and device compatibility

H.264 It is the only compression technology that plays on all computers, mobile devices, and OTT players. This makes producing high quality H.264 files compatible with your devices an essential skill. Helping you acquire and / or polish these skills is the objective of this article.
Well, we will start with the compatibility issue, because if the file cannot be played on the device that is needed, its quality does not really matter much. Then, we will see, the resolution, frame rate and data rate of your encoded file, since if these are wrong, using the H.264 encoding parameters will not matter either. So we will cover how to choose the correct coding tool and the H.264 codec and how to quickly adjust the x264 encoding parameters for optimal quality in the file.

Are you one of those who have hundreds of movies on the hard drive? Convert them to H.265 to save (much) space

Now that the H.265 format has been seated for a while and more and more devices are able to decode it, it is time for you to convert your movies to save hard disk space. A video in H.265 format measures up to 50% less than in H.264, while retaining the same quality.

What is H.265?

Also known as HEVC (“high efficiency video coding”), it is a video compression standard published in 2013 that improves its predecessor in several aspects, the H.264 / AVC format, whose first version was published in 2003. H.265 offers higher image quality at smaller bit rates, which means that files take up less space. It also supports 8K UHD resolution.

How does it benefit me? If you have an iPhone, you may already be using H.265. Apple introduced it in iOS 11 to reduce the size of videos, but only when they are stored on the phone (if you share them, they are converted to a more compatible format). You can also use it to save some space on your computer or multimedia server.

Imagine you have a movie on your hard drive that comes from a Blu-ray. The movie has been encoded in H.264 format and measures 12 GB. If you convert it to H.265 with a video encoder program (or video encoder, in English), the movie will measure between 6 and 9 GB. As simple as that.

Does H.265 have disadvantages?

Yes. First, compatibility. Only modern devices are capable of decoding H.265, so don’t bother if you have a TV or multimedia device that doesn’t support the format. Players like Plex transcode the movie in real time if your device is not compatible (that is, they convert H.265 to H.264 while watching the movie), which consumes a lot of energy and resources.

It is very hard for machines to code H.265, so you need a powerful CPU or GPU to do it faster (the good thing is that you only have to do it once). But it’s also hard to decode it, so a cheap NAS or player won’t be able to do it. H.265 gets along with old gadgets.

One last consideration: it is not clear that H.265 is the future. Large platforms such as YouTube and Netflix are bidding for another more compatible format called AV1 just because they don’t want to pay the H.265 license.

In any case, H.265 is the present. If you want or need to save gigabytes on your hard drive, you have the solution a few clicks away.