What Is FLV
Before exploring the best ways to crop FLV video files, let’s first have a quick review of this file format.
FLV, short for Flash Video, is a video container format developed by Adobe Systems, mainly designed for online video streaming. The FLV files store audio and video data using the same encoding method as SWF files.
FLV was a popular video format for online video platforms in the past as it supports playback before downloading the entire file. However, due to the end of Adobe Flash Player, this format is no longer as popular as before and has been replaced by MP4 and other modern video formats with better compatibility and performance.
How to Crop FLV Video Files on Windows
The FLV format is no longer as widely supported as it once was, so it’s a little difficult to edit. If you want to edit FLV files with professional software like Adobe Premiere Pro, convert them to acceptable formats first.
The good news is that some video editors can still handle FLV files and allow you to edit them with ease. MiniTool MovieMaker is one of the best video editors that supports FLV.
Therefore, if you desire to crop your FLV videos to eliminate unwanted elements from the frame, MiniTool MovieMaker is a fantastic choice. Here are the reasons why I recommend this application:
- #Ease of use: An intuitive interface with all buttons clearly marked, making it easy to use, even for beginners.
- #No watermark: Export videos with no watermarks, ensuring clean and professional-looking content.
- #Rich editing features: MiniTool MovieMaker offers a variety of tools and effects to enhance your videos, such as cropping, trimming, speed change, aspect ratio, transitions, filters, and more.
- #High-quality output: Export videos up to 4K resolution without branding for free.
How to crop a FLV video using MiniTool MovieMaker? Here’s the guide.
Step 1. Download the FKV video cropper
Click the button below to download the video cropper and install it on your computer.
MiniTool MovieMakerClick to Download100%Clean & Safe
Step 2. Upload your FLV video
After opening the application, click the New Project button to access the main interface. Next, click the Import Media Files button to add your FLV file. Then, drag and drop it to the timeline.
Step 3. Crop your FLV video
Click the Crop icon on the timeline toolbar to open the Crop window. Select as aspect ratio to crop the video or just keep the default ratio. Then, resize the red rectangle and move it to select the area you want to keep. Click OK to apply changes.

Step 4. Export the cropped FLV video
Click the Export button in the upper right corner. Then, set the output format, video resolution, frame rate, or bitrate, and click the Export button again to save the cropped video.

How to Crop FLV Video Online
If you need to crop FLV video online, try Online Video Cutter. As a versatile video editing service, it enables you to crop, loop, trim, rotate, merge, stabilize videos, change video volume, and more.
You can easily access this online FLV video cropper on your browser with no software installation required. However, such tools are heavily dependent on an Internet connection.
Follow the steps to crop your FLV video with Online Video Cutter.
Step 1. Visit the website
Navigate to the Online Video Cutter on your browser.
Step 2. Add your FLV file
Click the Open file button to import your video.
Step 3. Crop the video
After the video is uploaded successfully, click the Crop icon at the top. Then, select an aspect ratio or create a custom one and drag the handles in the video player to crop the video.

Step 4. Export the video
Click the Settings icon in the lower right corner to choose the output format. Then, click Save to start encoding the video.
Conclusion
If you still have some FLV videos at hand and want to crop them, just follow the steps above. Cropping is a common video editing technique and is available in most applications. If you just need to crop a video or do other simple editing, MiniTool MovieMaker and Online Video Cutter are enough.
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