As the largest and the most popular video-sharing site in the world, YouTube allows you to enjoy videos and music you love. You might be fascinated by YouTube videos and considering download YouTube videos into your computer or mobile devices for offline enjoyment. But for some users, they want more than just simply downloading YouTube videos. Some YouTube video downloading programs might not be able to turn YouTube FLV videos into a format that is well compatible with your media players. Such being the case, after getting YouTube FLV videos, you can make good use of a professional YouTube FLV video converter to convert YouTube FLV videos. At the same time, you can convert YouTube video to 3D video as well. Here you will find three effective ways to convert YouTube FLV video.

Part 1: Download YouTube FLV with Leawo Video Downloader

Some people might be wondering how to download YouTube FLV videos. Actually, you can make use of Leawo Video Downloader, a program able to download videos and music from 1000+ Sites with 6X Faster Speed, to download YouTube videos. As an online video downloader, this professional program is capable of downloading videos from a bunch of popular online video sharing websites like YouTube, Vimeo, Hulu, Dailymotion and Facebook, etc. The professional video downloader supports to output 720P, 1080P HD Videos. Leawo Video Downloader is efficient as well as user-friendly. It allows users to set the maximum download tasks, change the home page to whatever website as you like, delete browsing history easily and set directory for the downloaded videos.

If you are using Mac computer, you can switch to the Mac counterpart of Leawo Video Downloader. Download and install the right version of Leawo Video Downloader on your computer, and then follow the guide below to download YouTube FLV videos.

Step 1. Open Leawo Video Downloader

The program is included in a software bundle: Prof. Media. Kick off the bundle, and then click the Video Downloader tab to open the downloader.

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Step 2: Open Video Link

When you enter the video downloader, the built-in web browser would open YouTube.com automatically by default. You can change it to other websites in the settings. You can directly watch video on YouTube or input/paste a new link in the address bar to open a new link. This YouTube downloader would detect all the downable video sources on the current page and provide you with the option to download them.

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Step 3: Download YouTube Videos

The downloadable video sources would be listed on the sidebar on the right. If you can’t find the sidebar, click the button in the middle of the scroll bar on the right to call it out. Click the Download button on the desired video source to download the video.

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Step 4: Manage Downloaded Videos

All the downloading tasks would be listed in the Downloading Tab, and when the downloads are finished, check them out in Downloaded Tab. If you want to go back to the video page, just click on the address bar.

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Part 2: Convert YouTube FLV with Leawo Video Converter

After getting YouTube FLV video in hand, if you want to convert YouTube FLV, you can ask Leawo Video Converter for help. As a professional video converter, Leawo Video Converter allows you to convert video files between countless formats, and it can be regarded as an audio extractor for you to extract only audio content from source video file. The input and output video and audio formats include Common Video (MP4, H.265 MP4, MKV, H.265 MKV, MOV, etc.), Common Audio (AAC, AC3, WAV, MP3, WMA, FLAC, etc.), HD Video (HD MP4, HD AVI, HD TS, HD VOB, etc.), and 4K Video (4K MP4 and 4K MKV). The conversion speed from one format to another format with the help of Leawo Video Converter is extremely fast. As claimed on the official website, the speed is 6 times faster. More amazingly, Leawo Video Converter is able to retain 100% original quality of the source file. You are even allowed to add external subtitles and choose an audio track for keeping in the output video file. This video converter supports all together 11 kinds of languages: English, German, Japanese, Simplified Chinese, Russian, Hungarian, Armenian, Spanish, French, Portuguese and Dutch.

This professional YouTube FLV video converter is also equipped with various video editing features and parameter adjuster to let you personalize output files, such as video trimming, video watermarking, video cropping, video effecting, turning 2D video into 3D video, and removing video noise.

Download and install the right version of Leawo Video Converter based on the operating system of your computer, and then start to convert YouTube FLV videos with Leawo Video Converter.

Step 1. Import Source YouTube FLV Video File

Launch Leawo Video Converter, go to the “Convert” tab, and click “Add Video” button on the sub-menu to load your source YouTube FLV video file. Alternatively, you can directly drag and drop YouTube FLV video file into the program interface. After YouTube FLV video file is imported, you could play back YouTube FLV video file, select subtitles and audio tracks from source YouTube FLV video file, add external subtitles to loaded YouTube FLV video file, edit loaded YouTube FLV video file, etc.

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Step 2. Set Output Format

Click the drop-down box named “MP4 Video” by default next to the “Add Photo” button. On the drop-down list, select “Change” option.

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Then on the popup Profile window, selectn a proper video format from “Format” column as output format. Please note that once you change the output format, the name of the drop-down box will change as well.

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Note: If you need, you could click the “Edit” button on the drop-down profile setting box to adjust video and audio parameters like video codec, aspect ratio, frame rate, resolution, audio codec, bit rate, channel, sample rate, etc. After editing job is done, click “OK” to return to the main interface.

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Step 3. Convert YouTube FLV

Click the big green “Convert” button on the sub-menu bar next to the format setting drop-down box. Then, on the popup sidebar, set output directory. After setting output directory, click the “Convert” button right below. Leawo Video Converter would start to convert YouTube FLV to the format you just set. After the conversion process is finished, you can find converted file in the output folder you just set.

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Part 3: Convert YouTube FLV with Aconvert

The second method to convert YouTube FLV video is operated online as well with the help of Aconvert. The letter “A” in the name of Aconvert means “All”, which means Aconvert supports and converts all kinds of document, ebook, image, icon, video, audio and archive files online for free. Therefore, we can use Aconvert to convert YouTube FLV video online free of charge, and it supports many video outputs. It is easy to operate with Aconvert to convert YouTube FLV video.

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Step 1. Import YouTube FLV Video into Aconvert
Visit the official website of Aconvert, and then choose “Video” on the left to enter the Aconvert video converting interface. First, we need to import YouTube FLV video by clicking “Choose File”.

Step 2. Choose Output Video Format
After importing YouTube FLV video file, we can choose a variety of video formats as output. To convert YouTube FLV, you need to choose MP4 video format under “Target format”.

Step 3. Start Conversion Process
Click “Convert Now!” after output video format is set. After a few seconds of transmission, the conversion will be complete. After conversion process is complete, you can download the converted result on your computer.

Part 4: Convert YouTube FLV with Convertio

Another online YouTube FLV converter I recommend here is Convertio. But this online video converter supports 100MB maximum file size. If your source YouTube FLV video file is larger than 100MB size, you need to switch to other ways to convert YouTube FLV video file. Check out the steps below to convert YouTube FLV video online with Convertio.

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Step 1. Upload Source YouTube FLV Video
Select or directly drag and drop target YouTube FLV video file into the converter. It is possible for you to upload video file from your Google Drive or Dropbox account.

Step 2. Choose Proper Video Format as Output Format
After your source YouTube FLV video file is uploaded, choose a proper video format such as MP4, MKV, MOV, etc. as the output video format.

Step 3. Adjust Video Parameters
If necessary, you can adjust video parameters such as resolution, quality, aspect ratio and others by clicking the gear icon. Click “Convert” to begin conversion process.

Step 4. Download Converted Video
Once your video is converted and edited, you can download it to your Mac, PC or another device. If necessary, save the file to your Dropbox or Google Drive account.