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20 August 2019  Amanda J. Brook  Senior Product Manager
 

Summary
The wide spread of mobile devices and the faster network create a breakthrough for short videos. Since these short videos can be spread quickly, many online platforms and followers favor them very much. Yet, the resolutions and the screen sizes are different on video websites and other platforms. That requires you to adjust videos to fit the standards. How to shorten or compress a video? Renee Video Editor is a good tool for you!



Part 1: Compress Video by Modifying Resolution

The resolution standards on different video platforms are different. Before uploading a video, you should follow the standard to crop the screen area. Or, the video screen will be distorted.

This process can be easily finished on the function [Crop] of Renee Video Editor.

press to the download button
Go to the tab [Crop]. Then, adjust the video screen size. Check [Keep Aspect Ratio] to crop in proportion.
crop videos and related settings
This table tells you the resolution standards on some video websites:
WebsiteResolution
YouTube4096*2160
Facebook4096*2160
Vimeo7680*4320
Netflix4096*2160
Niconico4096*2160
Dailymotion3840*2160

1. What are Blacks Bars

If you want to change a video to the other resolutions or combine videos in different resolutions, the black bars will appear in the new video.

For example, if you change a video from 1280*720 (16:9) to 720*480 (3:2), the black bars will appear because the resolutions are not identical.

2. Remove Black Bars

1. Go to the function [Crop] in Renee Video Editor. Then, click [Add Files] to select the target video and see the black bars on the video.
cut black bars in renee video editor
2. Move the box to select a general screen area; check [Keep Aspect Ratio] and type numbers to set a more specific size. Generally, the screen proportion is 16:9.
select an screen area to crop in renee video editor

Part 2: How to Shorten a Video?

The wide spread of mobile devices and the faster network create a breakthrough for short videos. Since these short videos can be spread quickly, many online platforms and followers favor them very much.

How to shorten a video? If you want to show all highlights to viewers, you should remove the unnecessary parts and use some transition effects to combine the highlights. That can shorten a video but also make it more attractive.

Renee Video Editor can detect the target videos and take priority to lossless combination or cut if allowed.

If the resolutions of the videos are not identical, it can recode the videos but not degrade the quality. It is very convenient for users because they don’t need to use the complex encoder tool to reset the parameters.

TipsLossless cut: It means that a video is edited directly. This way will not degrade the audio or video quality because it skips the process of recoding.

Lossy cut: It means that a video is encoded again and then edited. Generally, the coding way is lossy compression in a video. If the video is encoded again, the audio and video quality will be degraded.

Renee Video Editor – Multi-function Video Editing SoftwareRenee Video Editor professional video edit tools

Separate videos with different parametersUsers can separate videos into equal clips by time, size and self-set parameter.

Cut Videos & AudiosUsers are free to cut videos and audios clips by setting start and end time.

Multiple Edit ToolsMerge, crop, rotate, cut and transform video easily. Change and add background music, subtitles and watermark to video.

Format ConversionSupport to convert videos and audios into different formats.

Separate videosSeparate videos into equal clips by time, size and self-set parameter.

Cut Videos & AudiosCut videos and audios clips by setting start and end time.

Format ConversionConvert videos and audios into different formats.

Free TrialFree TrialDownload

3000 users have downloaded and used Renee Video Editor!

Steps about how to shorten a video:
1. Open Renee Video Editor. Then go to [Cutter].
how to use renee video cutter to shorten a video
2. Set the specific start and end time for the video.
manually set start and end time to cut video in renee video editor
3. Dragging the progress bar can also select the target clip. The buttons at the bottom-right can facilitate you to fix the start and end points.
how to drag the progress bar to shorten a video
4. Go to  [Joiner].
go to joiner in renee video editor
5. Select the target videos and set the transition effects.Then click [Start] to combine them.
use transition effects to combine videos
6. It offers users hundreds of transition effects.
select one transition effects in renee video editor
Why Images lag with sounds in a Video?

1. Low computer equipment
If the computer is not equipped well, GPU cannot perform well. Then, the system is unable to update the images. Gradually, the images will lag behind the sounds.

Please remember to troubleshoot the software at first. Try to update the drivers of the graphics card and the sound card and notice whether they are compatible with the hardware. If the latest versions don’t work, try the earlier versions.

2. Issue on video
When some bugs exist in the video, images may lag behind sounds. In this situation, you have to give up the videos or download it again.

3. Improper use of video editor
Different video software is designed with different functions and usages. You can check the functions again when images and sounds are out of synchronization.

4. Issue on video editor
If there are bug in the video splitter, you should update to the latest version or use the full version. If the problem cannot be solved, you should change a better application.

5. Issue on video player
Too many video players will disorder the encoder and the decoder in the operating system, which leads images and sounds are out of synchronization. It is suggested that you install two video players at most.

Part 3: Compress Video by Optimizing Parameters

As we know, the size standards on different video platforms are different. Before uploading a video, you should follow the standard to compress the video. Or, the oversized video cannot be accepted by the platforms.
This table can tell you the maximum sizes in some video websites:
WebsiteSizeWebsiteSize
YouTube123GBFacebook1.75GB
Vimeo25GBTwitter512MB
niconico1.5GBDailymotion2GB
1. In Renee Video Editor, go to [Video Compression] and adjust the resolution value to compress the video. 6 options are available for users, namely 240*160, 320*240, 480*320, 640*480, 720*460 and 768*576.
use video compression to compress a video
2. Drag the bar to compress the video while observing the value changes in [File Size], [Quality] and [Compress].
3. In addition, in [Format], 11 common formats are available.
choose one output format to save the file in renee video editor
TipsIf you want to check the compression effect, click the button [Preview] to check the compressed videos for about 20 seconds.