How to compress video without losing quality?

In the world of digital technologies, video files can be considered one of the heaviest and cumbersome, and sometimes there is a need to compress them. However, as a rule, a reduction in size leads to a loss of quality of the product obtained at the outlet. But it can be minimized or even tried to completely avoid. Very often, users simply come to a standstill when they first encounter the digitization of a video. It seems strange that a normal video of a duration of only half an hour can take about ten gigabytes. And if there are several such clips, then there will not be enough drives to store them. Is there any way how to compress video without losing quality?

Yes, you can do this using VirtualDub. With the help of the built-in codecs, the size of the video clips can be brought to acceptable levels without losing the image quality. This program is free, and it can be easily downloaded from the developer's website, or from any of the free software catalogs. In addition, VirtualDub already has a Russian-language interface for a long time, therefore, it will not be difficult to understand this program at all.

Before you compress the film without losing quality, you need to open it in the installed program, which is discussed above. In its window will open the first frame of the video you uploaded. Leave the audio track as is, without any changes. To do this, click the Audio menu item and click Direct stream copy. To process the video stream, you need to click the Video and Full Processing mode buttons.

The next step, how to compress video without losing quality, is to select the type of codec to compress. The most optimal choice is DivX. He can compress films without damaging their quality. In addition, the clip thus obtained can be played not only on a computer, but even on an ordinary home DVD player. Therefore, click the Video and Compression buttons again, and in the list of codecs that appear, choose DivX Pro 5.0.3 Codec. You must confirm your choice by clicking on the Configure button.

In the continuation of the procedure, how to compress video without loss of quality, you should open an additional window to configure the selected codec. Put a tick in the Profile tab, it should be in front of the Use Bidirectional Encode option. Now you need to go to the General Parameters tab and set the values of all the sliders there to Normal.

Next, on the Bitrate Parameters tab, select Multipass, 1st pass first, which means "Multipass compression, 1st pass". After that, you need to set the bitrate parameters: the higher it is, the better the quality of the compressed video will be. All other parameters should be left unchanged. Then click OK once and then again.

The long-awaited moment has come: the next step is exactly how to compress video without losing quality. From the menu, select File, and then click Save as AVI. At the end of the operation, you will get a small file on the output, only this is just streaming information, but not video yet. Now you need to re-enter the codec settings, which are on the tab named Bitrates Parameters, and this time stop the selection on the Multipass, nth pass, which should be understood as "Multipass compression, n-th pass". Double click on OK again and save the movie in AVI format again. A sort of double processing of the movie as a whole will take a bit longer, but the clip will not lose any quality, but its volume will decrease by several orders of magnitude.

If you do not know how to compress AVI without loss of quality, then try the following program in the same program: first from the list of codecs stop at Xvid MPEG-4 Codec and click Configure. Switch to the Target bitrate mode by clicking in the new window on Targetquantizer, and move the slider to the right. After that, in the More field, click on the button of the same name: a new window will appear where you need to set 6 - Ultra High in the Motion search precision menu, and in the WHQ mode 4 make the WideSearch installation. Next, in this and the next 2 windows, click OK. Then open the video file and convert it by clicking Save as in the File menu.