In the digital world, video files can beconsider one of the heaviest and cumbersome, and sometimes there is a need to compress them. However, as a rule, reducing the size leads to a loss of quality of the product obtained at the output. 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 by usingthe VirtualDub program. With the help of the built-in codecs, the size of the video clips can be brought to an acceptable level, without losing image quality. This program is free, and it can be easily downloaded either from the developer's site, 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 press the buttons Video and Full Processing mode.
The next step is how to compress the video without losing itquality is the choice of the codec type for compression. 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 the video withoutloss of quality, you should have 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.
Then select on the Bitrate Parameters tabFirst Multipass, 1st pass, 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 came:The next step is exactly how to compress video without losing quality. From the menu, select File, and then 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 require a little more time, but the clip will not lose any quality, but its volume will decrease by several orders of magnitude.
Если вы не знаете, как сжать AVI без потери quality, then try the following in the same program: first, from the list of codecs, stop at Xvid MPEG-4 Codec and click Configure. Switch to Target bitrate mode by clicking on the Targetquantizer in a new window, 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 in the Motion search precision menu you need to set 6 - Ultra High, and in WHQ mode 4, set the WideSearch setting. Further in this and 2 following windows you need to click OK. Next, open the video file and convert it by clicking Save as on the File menu.
