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How to Use VLC to Compress/Reduce Video Size without Losing Quality

VLC Media Player also has a stunning video compression feature. Learn how to compress/reduce large MP4/MKV/MOV 4K HD videos with VLC without losing quality by changing crucial factors that determine the file size of a video. Note that if you want to use VLC to compress videos from 1GB to MB, you should sacrifice video quality. Use the step-by-step guide below to get to know how to reduce video file size with VLC.

Compress Video with Higher Compression Ratio than VLC Does

WinX HD Video Converter Deluxe - shows much better video compression ability than VLC.

  • Cut video size up to 80% off thanks to its intraframe & interframe coding algorithm, offering much higher compression ratio than VLC does.
  • No noticeable quality loss after video compression with the help of High Quality Engine and de-interlacing engine.
  • Offer several ways to reduce video file size, cut/trim/crop videos, lower down resolution/frame rate/bit rate, etc.
  • Unique Level-3 GPU acceleration tech makes the programcompress 8K/4K/1080p video at 5X faster speed than VLC.

Way 1. Downscale Video Resolution in VLC (Recommended)

First off, let's make it clear what determines the file size of a video. From the formula "video size = bit rate x duration", we can draw that bit rate and video length are the key points, with several other video parameters, say video codec, resolution, frame rate affecting the final size too. VLC can work as free video compression software. So, no more other words, just check how VLC compresses the file size of the video shot by iPhone, GoPro, DJI or digital camera by adjusting the key factors above in VLC video settings.

Before you resize video with VLC compressor, please DOWNLOAD VLC and finish the setup, then follow the steps below.

  1. Click "Media" -> "Convert / Save" or tap "Ctrl + R" keyboard shortcuts to pop up a smaller control;
  2. Add source (4K/HD) video into the file list;
  3. Click "Convert / Save" button to go ahead;
  4. Choose profile and do settings according to the four video compression methods offered below;
  5. Rename output in destination folder and click "Start" to compress video in VLC at once.
Steps on VLC Resize Video
Steps on VLC Resize Video

Downscale 4K to 1080p, 1080p to 720p, HD to SD

Scaling refers to changing the resolution of video to get video size changed. Here in order to shrink video size, downscaling is required. If you choose a profile with no SD or HD tag, like Video - H.264 + MP4 (TS), the resolution frame size will remain as original. So click setting icon right near profile and navigate to resolution to fill either of scale, width and height value to downscale source video.

VLC Compresses Video by Downscaling Resolution
VLC Compresses Video by Downscaling Resolution

To make it easier for the novices to compress video for sharing online or watching on mobile/home TV, VLC presets 10 video profiles with resolution fixed in 1080p, 720p HD and (640x480) SD as shown in the screenshots. The difference between SD, SD Low and SD High mainly lies in video bit rate and frame rate parameters which will be specified in Way 2.

VLC SD/HD Profiles
VLC SD/HD Profiles

Way 2. Change Video Encoding Parameters in VLC (Recommended)

E.g: H.264 MP4 -> H.265 MP4, 120/60 fps -> 30fps, 40000kb/s -> 8000kb/s

VLC gives user an ultimate control over video codec, bit rate and frame rate. Embracing all media formats supported by FFmpeg libavcodec and libavformat libraries, VLC is able to recognize and transcode a variety of videos to H.264/HEVC MP4/MKV, VP8 Webm, WMV, AVI, FLV, ASF, MP3, MPEG etc. (Check VLC Format Support from Wiki). Generally H.264 MP4 is the go-to pick for its wider compatibility and better balance between file size and quality. But sometimes if the end player or social site supports HEVC, or you just shrink video for saving space, it's more recommended to downsize large video to H.265 MP4, because the High Efficiency Video Codec / H.265 codec achieves the same quality as H.264 with only half the size.

VLC Compresses Video by Changing Video Parameters
VLC Compresses Video by Changing Video Parameters

Since 30 frames per second is enough for human eyes, it's available to compress high-fps video by lowering the fps directly to 30. Note that if the high-fps video is taken for slow motion, take care to decrease the fps before you post producing a favored slow motion video.

As is mentioned above, file size can be calculated by multiplying bit rate and duration. So with video duration and other stuff unchanged, downgrading high bit rate properly reduces file size at one go. Generally, 4K video looks clear and smooth when streaming at 35Mbps or higher, 1080p at 8000kbps, 720p at 5000kbps, 480p at 2500kbps, 360p at 1000kbps...

Way 3. Compress Media Size by Altering Audio Encoding Parameters in VLC

VLC also enables user to reduce video file size without losing video quality by resetting audio codec, bit rate (to 128 kb/s), sample rate and channels in VLC video and audio settings. The audio settings are available under the Audio Codec tab. Click the Audio codec tab, check the box next to the Audio to get audio setting options.

VLC Changes Audio Codec for Shrinking Size
VLC Changes Audio Codec for Shrinking Size

Way 4. Compress Videos with VLC without Losing Quality by Trimming/Cutting

VLC does not support cutting or trimming video for removing unwanted video part off. Therefore, you can alternatively "cut" video content by recording the important or necessary clips only with "Record" feature under playback. In this way, you can compress video size with VLC without losing quality. Drag the video to the start point you want to keep, play the video, and click the red recording button, after the video reaches to the ending point, click the recording button again.

VLC Records Video for Cutting Purpose
VLC Records Video for Cutting Purpose

Try A Better VLC Alternative - Compress Video 90% Off, No Quality Loss

VLC compresses large video too slow, or VLC crashes on Convert / Save? Output quality is ruined? The final video size is still too large? Try the best VLC compressor alternative - WinX HD Video Converter Deluxe. The program is skilled in compressing huge (4K/HD) video by transcoding, downscaling, tweaking parameters, cutting, trimming, and cropping at GPU hardware accelerated speed, making it possible to obtain 90% compression ratio with pixel-level quality difference.

In addition, it lists 420+ cover-all output profiles to meet various video compression needs, hot iOS/Android mobiles, gaming consoles and web sites included. You are still empowered to set quality at low, normal or high level. Of course the higher quality, the larger file size.

Steps of Cutting Large Video with WinX HD Video Converter Deluxe:

Step 1: Open WinX HD Video Converter Deluxe and add source big video through "+Video" button.

Step 2: Choose a target format like H.265 MP4, and click "Trim" button to move to another panel. Click the Crop button to remove unwanted frames of the video.

Step 3: Set the video start and end time for cutting and confirm. Click the video settings button to adjust video resolution, bit rate, frame rate, and more.

Step 4: Hit "RUN" to have hardware finish the compressing work at up to 47x real-time faster. Better than VLC converter, WinX HD Video Converter Deluxe outputs playable video even when you stop the conversion half way.

Read more: how to reduce video file size to 90% smaller.

Compress video with VLC alterntaive
Compress video with VLC alterntaive


Kistent Waung

Kistent Waung twitter icon

Graduated from Nanyang Technological University, Singapore, she employs herself in IT related content creation (since 2013) and happens to perfectly combine her major (computer & science) and her gusto (writing). She's seasoned at offering video audio conversion workarounds and always passionate about new trends, from hot HEVC, 4K to the new AV1 codec.

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