FLV to MP4 Converter

Videos from the Flash era - into a format that works today

No software installation • Fast conversion • Private and secure

1K+
users
46K+
conversions

Converters from FLV

FLV to AACFLV to GIFFLV to MP3

Converters to MP4

3GP to MP4AVI to MP4DIVX to MP4GIF to MP4M2TS to MP4M4V to MP4MKV to MP4MOV to MP4MPEG to MP4MPG to MP4MTS to MP4RMVB to MP4TS to MP4VOB to MP4WEBM to MP4WMV to MP4XVID to MP4

When you need FLV to MP4

FLV is the video format from the Flash Player era. In the 2000s and early 2010s, almost all online video was in this format: YouTube, Vimeo, news websites, educational platforms. Saved clips, archived lectures, stream recordings, and courses from that time sit in many users' collections as FLV files. The problem: Flash Player has been discontinued, and today FLV does not open in any browser, on phones, or on most TVs. MP4 is the modern format that plays everywhere.

What changes after conversion

You get the same clip in MP4, which will open in a browser, on a phone, TV, and in any video editor. The video is re-encoded during conversion. Quality will not improve - if the original FLV was recorded at low resolution, it will stay that way. Internet video from that era was usually not high quality - that is a feature of the time, not of the conversion.

If the file is damaged or protected, conversion may not complete.

When this is especially useful

  • Old lectures, webinars, or training courses saved in FLV are not opening.
  • Videos downloaded from YouTube or other sites sit as an FLV archive.
  • You need to upload an archived video to YouTube or a social network.
  • An FLV file is not opening on a smartphone, TV, or in a browser.
  • Archived corporate or educational materials need to be viewed or preserved.

Common tasks and search situations

  • archived downloaded videos from YouTube in FLV - how to open;
  • FLV not playing in Chrome or Firefox;
  • old training courses in FLV - how to watch;
  • FLV not opening on iPhone or Android;
  • stream recordings from the Justin.tv era to MP4;
  • Flash video from news sites to a normal format;
  • FLV not accepted when uploading to YouTube;
  • corporate video training in FLV - convert to MP4.

What to check before converting

  1. Check whether the source FLV opens in any third-party video player - if the file is damaged, conversion will not help.
  2. Keep in mind that FLV video from those years was often low resolution and quality. Conversion will not fix this.
  3. If you have many files - first convert one and check the result before uploading the entire archive.

Format and conversion limits

FLV as a format was built for web streaming and Flash Player. The video quality in such files was often mediocre from the start - especially in early recordings. Conversion to MP4 solves the playback problem but does not improve the picture.

The size of the result depends on the content and duration of the source.

Related tasks

If you only need audio from an FLV video, FLV to MP3 works well.

If you have AVI files from the same era, use AVI to MP4.

If you need to convert MPG video from DVD or digitized VHS recordings, use MPG to MP4.

What is FLV to MP4 conversion used for

Archive of downloaded internet videos

Clips saved from YouTube and other sites in 2005-2015 sitting as FLV files - after converting to MP4 they can be watched on any device again.

Old educational courses

Lectures, webinars, and training materials from Flash platforms saved in FLV. Converting to MP4 lets you open them without Flash Player.

Corporate video recordings

Training sessions, presentations, and internal video materials from the 2000s in FLV converted to MP4 for viewing on modern devices.

Uploading to social networks

Archived FLV videos need to be published - after converting to MP4 they are accepted by YouTube and other platforms.

Live stream recordings

Stream archives from the Flash era saved in FLV converted to MP4 for long-term storage and viewing.

Tips for converting FLV to MP4

1

Do not expect quality improvement

Internet video from the 2000s was often low resolution. Converting to MP4 will not change the picture - it only solves the compatibility problem.

2

Check the file before converting

Make sure the FLV file opens in some player. A damaged file will most likely not convert.

3

Keep the originals

Before deleting original FLV files, make sure the converted MP4 plays correctly.

4

Start with one file for large archives

If you have a large archive, test conversion on one file first - this will save time if something goes wrong.

Frequently Asked Questions

Why does an FLV file not play in the browser?
All modern browsers removed Flash Player support. FLV files cannot be played in a browser without a special player. After converting to MP4, the video will open in any browser through its built-in player.
Will video quality improve after converting FLV to MP4?
No. Quality is determined by the source file. Internet video from that era was often low resolution - it will stay that way. Conversion only solves compatibility.
How do I open FLV without converting?
Some third-party video players open FLV on a computer. But for use on websites, social networks, phones, and TVs, converting to MP4 is still necessary.
Can I convert multiple FLV files at once?
Yes, you can upload multiple files. Each will be converted and available for download separately.
What should I do if FLV does not convert?
Check whether the file plays in any video player. If the file is damaged or protected, conversion may not complete.
Can I upload the converted file to YouTube?
Yes. MP4 is the recommended format for YouTube and most other platforms. After conversion, the file will upload without issues.
Will the file size change?
It depends on the source. The exact final size cannot be predicted - it is determined by the content and parameters of the specific file.