Aiseesoft Free YouTube Converter

Convert YouTube FLV to MP4/MKV/AVI/MPEG/MP3 and other popular video/audio formats with high quality. It also can add 3D effects to 2D YouTube video and edit YouTube FLV file according to your need.

Convert YouTube FLV to 3D video

Aiseesoft Free YouTube Converter possesses a really awesome feature that help users convert FLV, SWF and F4V video files to 3D videos with fantastic visual effects. It provides multiple stereoscopic 3D modes for you to choose from, including Anaglyph (Red/cyan, Green/magenta, Amber/blue), Side By Side (Full), Side by Side (Half-Width), Top and Bottom (Full), Top and Bottom (Half-Height). Also, this Free YouTube Converter offers you a wide variety of the range of 3D video formats, such as MP4 Side by Side 3D Video (*.mp4), AVI Side by Side 3D Video (*.avi), etc. Then you can directly upload your stereoscopic 3D videos to YouTube and share video with friends, family and the world.

Convert FLV to MP4/MOV/AVI and more

Free YouTube Converter has the capability to convert FLV to MP4, MOV, MKV, AVI, WMV, MPEG, MPG, TS and other frequently-used video formats. Moreover, it enables you convert the downloaded YouTube to MP3, WAV, WMA, AAC, FLAC and more audio formats with original sound quality. And you are allowed to directly convert FLAC to popular audio formats, such as AAC, AC3, AIFF, AMR, etc. The converted video/audio file be compatible with iPhone (iPhone 5), iPad (iPad 4, iPad mini), iPod (iPod touch 5, iPod nano 7), iTunes, iMovie, PS3 and other Android phones and portable devices.

Extract audio track from HD video losslessly

Edit YouTube with multiple editing functions

It provides various setting options for you to edit YouTube FLV/SWF/F4V video and adjust the effects. You can handily clip source YouTube video, crop playing area to remove the unwanted part, cut any length of segment and merge several clips into one new file, define output video/audio effects by adjusting Brightness/Contrast/Saturation/Hue/Volume, add text or image watermark, and take snapshots to save any specific moment and so on. With this powerful YouTube converter, you can get the output video/audio file you really like.

High output quality and best user experience

Thanks to the concise interface and user-friendly design, you can convert YouTube to MP4, MOV, MKV, AVI, MPEG, MP3, WAV, etc. in just a few clicks. More importantly, the output video/audio will keep exactly the original YouTube quality. And you can make the conversion from YouTube to iPhone/iPad/iPod supported formats with super-fast speed. Simple operations, high output quality and fast converting speed will guarantee you the excellent user experience.

High output quality and best user experience
  • Jane


    Aiseesoft Free YouTube Converter helps me convert FLV to Side by Side 3D video files, which help me directly upload 3D videos to YouTube.

  • Jack


    I used this YouTube video converter to convert flash .swf animations downloaded from Pencil to the video formats that YouTube supports. That's great! Thank you!

  • Sam


    It works just as I expected. I use it to convert the downloaded YouTube videos to MP4 for my Samsung S7 edge. The converted videos are satisfying.

  • Tyrion


    Great FLV converter and lots of useful functions. Besides converting FLV to MP4/AVI and other video formats, it can help me to do some basic editing on my YouTube videos.

  • Morgan


    I tried the powerful 2D to 3D converting feature on this free YouTube converter. The converting speed is fast, and the output 3D effects are really cool.

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