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How to Reduce Video Size without Losing Quality When Converting a Video (or DVD)

Uncompressed digital video files deliver utmost quality, but usually have to store enormous amount of data. While at the moment you may think that your PC or portable gadgets will not have enough space, you'll need to reduce video sizes when you need to upload or stream large videos. Now, free download the best compressor to decrease video size without losing quality: https://www.videoconverterfactory.com/download/hd-video-converter-pro.exe

Updated on Feb 28, 2023

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You may meet the following circumstances:
1. I have been making videos but the problem is all the videos are large in size. Is there a video size cutter that works great at making high quality videos?
2. I wanted to upload my video to Facebook. But the file size was too large to upload that finally I had to cut the video into several clips. You may think it's stupid while I can preserve the original video quality utmost. I tried many video size reducers, but none can help me reduce video size without losing quality or solve how to shrink video file size losslessly before uploading.

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I believe there're still many people having similar kind of problems. Similarly, some of us will convert video to a smaller size by adjusting relevant parameters of the original videos when converting videos or sending videos via e-mail. We all hope for getting the output video file in a smaller size while not sacrificing quality. The following methods of how to compress video files without losing quality could help you. With this tutorial, you can deal with lossless compression via desktop software or reduce video size online without losing quality. Before that, let's learn some helpful knowledge about video file size.

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What Parameters Affect Video File Size

How to compress a video file or optimize the size of target video? Why the video size gets much bigger than predicted after the video conversion is completed? Here we need to figure out what parameters have to do with video size, then we can solve how to compress a video without losing quality. For video size, encoder (Format) and bit rate of the video are the most crucial factors or reference indexes. In broad terms, the video size is determined by bit rate. Under the same definition, the higher bit rate the video possesses, the bigger the video size is. And remember, the resolution has no influence on video size if we don't change video bit rate.

The frame image below shows how the excellent HD video converter namely "video size reducer software" lets you straightforwardly shrink videos.

Video (4k)
Video (1080P)
Video (720P)
DVD (480P)
120 mins
120 mins
120 mins
120 mins
Original formats & encoder
H264, MPEG4, MPEG2, MPEG1, VP9, WEBM, XviD, DivX, WMV1/2/3/9...
H264, MPEG4, MPEG2, MPEG1, VP9, WEBM, XviD, DivX, WMV1/2/3/9...
H264, MPEG4, MPEG2, MPEG1, VP9, WEBM, XviD, DivX, WMV1/2/3/9...
H264, MPEG4, MPEG2, MPEG1, VP9, WEBM, XviD, DivX, WMV1/2/3/9...
Original bitrate
40,000 kbps
10,000 kbps
3,500 kbps
9,800 kbps
Original size
30 GB
8 GB
3 GB
4.7 ~ 8.5 GB
Recommended output
H265 (MKV/MP4)
H264 (MP4/MKV)
H265 (MKV/MP4)
H264 (MP4/MKV)
H265 (MKV/MP4)
H264 (MP4/MKV)
H265 (MKV/MP4)
H264 (MP4/MKV)
Output bitrate (Estimated)
H265=6,500 kbps
VP9=6,500 kbps
H264=14,000 kbps
H265=1,600 kbps
VP9=1,600 kbps
H264=3,200 kbps
H265=900 kbps
VP9=900 kbps
H264=1,800 kbps
H265=600 kbps
VP9=600 kbps
H264=1,200 kbps
Output size (Estimated)
H265=5 GB
VP9=5 GB
H264=10 GB
H265=1.3 GB
VP9=1.3 GB
H264=2.6 GB
H265=900 MB
VP9=900 MB
H264=1.8 GB
H265=500 MB
VP9=500 MB
H264=1 GB
Compression ratio
Batch Compression

Four Easy-handle Methods on How to Reduce Video Size without Losing Quality

You may find it unbelievable to reduce video losslessly. That's because you didn't know of or haven't used HD Video Converter Factory Pro. As an excellent video size changer, it provides you with three ways to fix the how to reduce video file size without losing quality issue. Now, it's time to have a try and you'll find it's useful to reduce size of video.

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Video size reducer without losing quality
How to compress video without losing quality? You can handily convert them with the best video compressor without losing quality at your pleasure. More features >

Method One: Perfectly Convert Video to Smaller Size without Losing Quality via HD Video Converter Factory Pro

WonderFox HD Video Converter Pro is a leading video converter, which enables us to decrease 4K or UHD video as well as convert SD video to HD video. Compressing video files will be finished within three simple steps. First you can free download this software here, then launch it and select Converter on the startup window.

Reduce Video Size without Losing Quality Free Download

Let's see the step-by-step instruction for reducing video size without quality losing

  • Step 1. Click "Add Files" to import video(s) or just simply drag and drop your video(s).
  • Step 2. Go to the Output Format section and select H265. The program presets "Smart Fit" option for each format and device. So you don't need to know suitable parameters to get the best size and quality.
  • Step 3. Press "Run" to start to compress video size without losing quality.
  • Tips: Here's a suggestion: select output format in this order: H265 (HEVC) > VP9 > H264/AVC(1) > DivX > MPEG4 > MPEG2/1 > XviD. For the same video file, compression ratio for H.265 is better than other encoders (formats). Besides, this file size converter can compress videos without losing quality in batches, which will save much time.

    Related Sources: Reduce AVI l Compress MP4 l Shrink WAV l Decrease MOV

    Method Two: How to Reduce Size of Video without Losing Quality in Batches by Changing Parameter Settings

    If you want to reduce the size of video in bulk, you're also provided with flexible Parameter settings options. It's a customized way to decrease video size with the video file size reducer. Here free download the video size reducer and then follow the step-by-step guide below to reduce any video size in batches via the "Parameter Settings" in the Converter section.

    Use this way to compress video size as follows:

  • Step 1: Just drag different videos to the program.
  • Step 2: Select "Parameter Settings" and change bit rate to a lower value or drag the control-bar to lower quality. Then click Ok to save the change. You should strike a balance between the size and quality.
  • Step 3: Click the "Run" button to begin to cut down video size.
  • Method two set compress ratio

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    How to reduce the size of video
    This reducer provides three fast ways to decrease video size losslessly. And let you convert videos to 500+ formats and devices at one go.More features >

    Method Three: Cut Off Unwanted Part to Reduce Video File Size

    Use the built-in crop tool to cut off unnecessary parts of the video. You can preview the output video at the same time.

    Cut off unnecessary parts

    HD Video Converter Factory Pro Can Help You More

    Besides reducing video file size, you can use the converter to download YouTube video, like 4K video, new VR resources, and 360-degree video with ease. Moreover, you can add subtitle to video or remove subtitle from video. Making special ringtone for iPhone/Android smartphone all by yourself is supported as well.

    Method Four: Reduce Video Size Online without Losing Quality

    If you stick to compress video online without losing quality, I tried my best to find a capable online compressor: Clipchamp. I used it to compress several videos. Personally, as an online tool, its user interface is pretty good and is also easy to do with file reduction. But to me, it took too much time just uploading and analyzing a video file. For example, I added a video which was about 90 MB and 6-minute long with several minutes, while I could add the same video into HD Video Converter Factory Pro within seconds. Maybe it depended on the network connection speed. One more thing: you can only free reduce 5 videos a month and the service only supports 1080p resolution in max. Of course, there are more sites allowing you to reduce video file size without losing quality online free with simple steps.

    To sum up, with the above four quick solutions, you can reduce video size effortlessly. Feel free to share this article to help more people to deal with video compression.

    DVD Compression

    By the way, if you happen to be a DVD movie lover and have DVD ripping and compression needs, you can try DVD Video Converter to rip any protected DVDs to wanted digital video formats and remove region codes without hassle. At the same time, it can reduce the DVD video to a smaller file size for you.

    Related Source: How to Reduce DVD Size by Using the Best DVD Compressing Software

    Still have any question? Have some feedback?
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