X264 Là Gì


2. How is the quality of the movie between the versions? 3. Choose which movie format: AVI vs MKV vs MP4,…. ?

Why do online leech movies often have long and confusing names? Have you ever been curious about that?

For example: Captain Marvel 2019 1080p Blu-ray Remux AVC TrueHD Atmos 7.1-HDT.mkv

The parameters of a movie on the HDVN forum shared, how to understand them?

Oh, I bet quite a few of you reading this have pulled the movie and must have come across such names. And those of you who have never pulled movies online, don’t worry, this article provides a sufficient amount of knowledge for you to know if the movies you are watching are “quality” or not!

This post is shared by Anh Kaka – admin group Now | Yam Community shares from the perspective of a person who specializes in pulling and reuploading quality movies for you/e via max speed links. I also shared about my friend Anh Kaka before through this article:

Let’s go back to the movie name in the example above:

For example: Captain Marvel 2019 1080p Blu-ray Remux AVC TrueHD Atmos 7.1-HDT.mkv

The output would be:

Ver: Bluray REMUXTracker: HD-Torrents – HDTResolution: 1080pAudio: TrueHD Atmos 7.1 Now, let’s learn more about the above parameters with Ba Na through the “skewed” article below!

1. How should quality movies be watched?

This is probably a question few people care about, most people only need 1 movie to see it properly while most filmmakers always try to create perfect footage. However, when you watch movies on movie websites, it means that the quality of the movie is no longer original, you cannot “experience” all that the movie brings.

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However, depending on the case, depending on the type of movie, you can watch it directly on the website, not necessarily dragging the gigabyte-heavy sets to your computer to watch Offline.

With the CAM, HDTC, and HDRIP versions, you should watch them at movie websites because they make subtitles. With WEB – DL should not be viewed on movie web because it hardsub encodes MP4 with reduced image and sound quality.

In particular, you should know more about the following standards to better understand the quality of the film:

The new Bluray REMUX is a good choice because the image and sound quality is very high. The ISO is heavier and you must have a dedicated head or a strong machine to watch it very well.

I list for you to easily imagine the quality of the movie is decreasing:


If you want the best when watching, wait for BLURAY REMUX which is both convenient and high quality like watching a theater (suitable for putting on 4K TV).

Okay, now let’s go through the details of how people make movies and how to name them:

CAM: Recorded by camcorder right in the cinema. image and sound are quite bad, there is a lot of noise (laughs, audience voices); blurred image due to vibration (if the camcorder does not have a stand )TELESYNC (TS): same as CAM version although with an external receiver but with a lot of noise in the theater .SCREENER (SCR): copy copied to VHS tape, to promote report.DVD-SCRENNER (DVDScr): Same as screener, but recorded from DVDWORKPRINT (WP): WP is a draft of an unfinished movieINTERNAL: internal version. low quality—————————————————Bluray/BDRip is a movie that is encoded directly from the original Bluray disc, giving the best picture and sound quality in today’s sources. Bluray Remux: The movie has almost the same picture and sound quality as the original. the original, converted directly from the m2st format of the Bluray disc to the mkv, the remux movies are often huge in size, several tens of GB. BRRip is re-encoded from a bluray ripped from the original disc before, Its quality compared to Bluray/BDRip is almost the same. too strict.HDRip: The movie is re-encoded from any HD source such as BDRip, BRRip or HDTV, so it will have lower quality than these.HDTV: The movie version taken directly from the channels HD cable TV, the quality depends on the bitrate and signal of each channel.Web-DL: The movie is taken directly and not re-encoded from online video streaming sources like Am azon, Netflix, Hulu, also Web-DL source can also come from Itunes online movie store.WEBRip/WEB: Movies are also sourced from live sites but encrypted, hence quality worse than Web-DL.

2. How is the quality of the movie between the versions?

a. Bitrate is important in determining the quality of a movie:

Bitrate is the amount of data transferred from the movie file to the CPU in 1 second for processing and decoding into images and sounds.

The higher the bitrate, the more beautiful the movie, the more vivid the sound, but the CPU processes more, if the Bitrate is too high, the CPU will freeze.

A little bit of information about Bitrate:

With 2 movies with the same Bitrate but different resolution, for example, Bitrate 5 Mbps with 1080p and 4K resolution, 4K video will look worse than 1080p. Low resolution with high bitrate when viewed, the picture will be broken, see the teeth clearly. saw.High resolution + low bitrate, the image is smoother but blurry and details are not clear. For scenes with fast motion, low bitrate will be distorted and bad.

Real life examples with the Captain Marvel set:

WEB – DL 720p: 3914 kb/sWEB – DL 1080p: 4444 kb/sWEB – DL 4K: 14.0 Mbps Bluray 720p (SCENE): 4814 Kbps (SPARKS) Bluray 1080p (SCENE): 8611 Kbps (SPARKS) Bluray 1080p (INTERNAL): 17.0 Mb/s (HDCHINA)Bluray 1080p REMUX: 31.6 Mb/s (MTEAM)Bluray 4K: 62.74 Mbps (MTEAM)b. HEVC and the unknown.

HEVC (High Efficiency Video Coding), also known as H.265, is a new video compression standard that inherits H.264/MPEG-4 AVC.

HEVC has 2x data compression ratio than H.264/MPEG-4 AVC. That is, with a 50% lower Bitrate, but HEVC gives the same quality as AVC. So with HEVC movies, the image quality is significantly increased.

Video comparing HEVC vs AVC for easy visualization:

c. HDR – for true-to-life images:

HDR – High Dynamic Range: is a function that expands the range of bright and dark areas and reduces the difference between light and dark areas.

HDR makes the image most realistic compared to life.

Video of Dien May Xanh helps you have a more detailed look at HDR-enabled TVs:

3. Choose which movie format: AVI vs MKV vs MP4,…. ?

AVI stands for Audio Video Interleave, uncompressed AVI, so the image of this video is quite beautiful and sharp, but the capacity is very large.

MKV support x264 compression level compared to Xvid (AVI) size 70% – 80%, so the capacity is quite high but the quality is very good. ( x264 is in H264 – MPEG-4 Part 10 AVC (Advance Video Coding)). MKV supports multi audio stream & multi subtitle stream (multiple audio streams and subtitles).

MP4 is basically the official filename extension for MPEG-4 PART 14. MP4 uses codecs that indicate how audio or video should be encoded. Advanced Audio Coding (AAC) is the most popular codec for compressing audio in MP4 format.

MPEG 4 (Moving Picture Experts Group-4): low bitrate image and audio compression standard. MPEG-4 is a video compression standard designed to achieve the highest quality of video content standards.

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MKV, M2TS, MP4 are all video and audio containers (called streams) that can be accompanied by subtitles (softsub) and attachments (font,xml, gallery… ).

So what is “video content standard”?

The content standard here is the standard in real-world videos, it’s not designed to compress 3D-edited videos, regular TV cartoons, or anime (which is why the videos fall under this category). on compression is not very good using MPEG-4).

MPEG-4, uses a technique of unseen by the viewer by transforming the data about the pixels on the video into a mathematical formula that closely resembles that of the data in order to reduce the size while maintaining the quality. high.

This transformation is so similar that it would be very difficult for the average human to tell the difference between the source video and the resulting video. The color array of the original frame will be transformed into a special color array called YV12. The human eye is generally less sensitive to colors than to light levels (a quick glance across the sky will give you a better sense of what color it is in the sky).

Therefore, MPEG-4 evaluates the brightness of the image more important than the color. This results in brightness being recorded in each pixel and color information being recorded only every 4 pixels.

A little objective comment on the standards analyzed above:

MP4 will be lighter than MKV but not as good. MKV will be used for Bluray extraction because it can compress at high bitrate (DTS audio standard has high bitrate so MP4 is not supported). MKV can store content. unlimited multimedia, commonly used for movies and TV shows. It strongly supports all video/audio encoding formats.MP4 has specific formats supported, including audio of MPEG-2/4 (HE)-AAC, MPEG-1/2 Layer I, II, III (MP3), AC-3, Apple lossless, ALS, SLS, Vorbis and video of MPEG-2 Part 2, MPEG-4 ASP, H.264 / MPEG-4 AVC, H.263, VC- 1, Dirac. Both MKV and MP4 can store HEVC/H.265 video supporting resolutions up to 4K/8K UHD.MKV does not support Dolby Vision.Bluray can be output to MKV as well as M2TS native format its copy.

4. AUDIO quality, deciding “real multi-dimensional experience”:

We’ll talk a lot about standardized audio technologies in movies, many of which you probably haven’t heard of. However, this is an important factor after picture quality in directing viewers to the experience closest to the cinema. Come on, let’s see what this part is good with Ba Na!

DTS stands for company name Digital Theater Systems Inc.specializing in digital audio technology.

Compared to AC3, ACC, DTS has superior sound quality.


BITRATE AUDIO DTS when compared to other benchmarks

DTS Digital Surround )(DTS 5.1) is a technology that encodes / decodes 5.1 surround sound with 20-bit quality.

Surround : surround sound (you): this sound system aims to describe the sounds happening around you, creating the most realistic feeling when watching movies.Dolby Atmos: surround sound technology. For example: birdsong on the left, bullets on the right, bombs exploding behind… then how these sounds appear on the movie, you will feel exactly the same with your sitting position.

Dolby TrueHD: allows to reproduce the space with surround channels with uniform sound intensity, the signal source in each channel, after being decoded through the processor, will be amplified individually.

Maybe you don’t know:

Blu-ray/HD-DVD uses Dolby TrueHD standard set-up up to 8 channels (7.1 channels), but in fact this decoding standard is capable of handling more than 8 channels. Dolby TrueHD processes multi-channel audio at a very high rate of 18Mbps, with a full-range sampling frequency per channel of 96kHz/24bit. Listeners can accurately perceive every bit of audio captured from the studio with 100% uncompressed quality. Dolby TrueHD provides a solution for watching movies at night with “Night Mode”, this mode will limit the loud sound segments that often appear unexpectedly in the movie but still retain the quality and sound details. .

DTS-HD Master Audio is the surround standard that achieves the highest sound quality available today, capable of fully recreating every smallest detail of the recording. DTS-HD Master Audio processes audio at blazingly fast 24.5Mbps for Blu-ray format and 18Mbps for HD-DVD.

Maybe you don’t know:

Similar to the Dolby TrueHD standard, DTS-HD Master Audio presents a surround stage with 8 channels (7.1) bit to bit PCM Linear (uncompressed) at 96kHz/24bit sampling frequency. The sound source from the studio, the studio will be decoded intact, transferred to the amplifier for each channel and output through the speakers.

DTS-HD 7.1 High Resolution: DTS-HD High Resolution has lower sound quality. Specifically with the Blu-ray format, DTS High Resolution Audio only processes audio signals at 6Mbps and 3Mbps with HD-DVD discs. Although the sound quality cannot be compared with DTS Master Audio, DTS-HD High Resolution has the advantage of taking up less space.

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∴ ∴ ∴ ◊ ∴ ◊ ∴ ∴

Ok, the post is over. Hopefully, through the above article, a/e will have a better overview of how the shared movie is of what quality and value it is. On behalf of you reading the article, I thank you, Anh Kaka, for sharing a lot of useful knowledge for the community as well as the values ​​you bring. Hopefully in the future we will see more of Mr. Kaka through the articles shared on the Share Now website.

Nhớ để nguồn bài viết này: X264 Là Gì ? Định Nghĩa Và Giải Thích Ý Nghĩa Sự Khác Biệt Giữa H của website ngothinham.edu.vn