Having some FLV video files in hand but don’t have a proper FLV video player to play back these FLV video files? As an Adobe media container, FLV delivers synchronized audio and video streams, and the data within FLV files are encoded in the same way as audio and video within SWF files. Both FLV and SWF video files are less popular in today’s digital world. What to do when you get some FLV video files? To solve this issue, you can convert FLV to other video formats such as H264, MP4, MOV, AVI, etc. Here in this article, we will show you some FLV to H264 converters to convert FLV video files to H264 for you to enjoy FLV video in a convenient way. In addition to H264, you can convert FLV to WMV.

Part 1. Convert FLV to H264 with Leawo Video Converter

The first professional FLV to H264 video converter I will introduce here is Leawo Video Converter. Having an easy-to-use interface, this video converter requires no expertise to operate video conversion, which means even software green hand can operate this video converter at great ease. Better than any other free FLV to H264 converter, Leawo Video Converter is able to convert video files at 6 times faster speed. The input and output support a great variety of formats such as Common Video (MP4, H.265 MP4, MKV, H.265 MKV, MOV, etc.), HD Video (HD MP4, HD AVI, HD TS, HD VOB, etc.), and 4K Video (4K MP4 and 4K MKV). At the same time, Leawo Video Converter supports audio input and output as well, including AAC, AC3, WAV, MP3, WMA, FLAC, etc. In other words, we can use Leawo Video Converter to extract audio file from video file, and to convert audio file from one format to another.

Not limited to Windows version, Leawo software team also develops the Mav counterpart of Leawo Video Converter for operating on Mac system. Download and install the right version of Leawo Video Converter based on the operating system on your computer. As the conversion process is nearly the same regardless of version of Leawo Video Converter, here we take Windows version of Leawo Video Converter as an example to convert FLV to H264.

Step 1. Import Source 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 FLV video file. Alternatively, you can directly drag and drop FLV video file into the program interface. After FLV video file is imported, you could play back FLV video file, select subtitles and audio tracks from source FLV video file, add external subtitles to loaded FLV video file, edit loaded FLV video file, etc.

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Step 2. Set H264 as 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, select “MP4”, “MKV”, “FLV” or any other video format that supports H.264 video codec 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 FLV to H264
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 FLV to H264. After the conversion process is finished, you can find converted file in H264 format in the output folder you just set.

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Note: Leawo Video Converter is equipped with an internal video editor, which means you can edit video after you import source video files.

Part 2. Convert FLV to H264 with DivX Converter

Equipped with DivX profiles for creating DivX, H.264, and HEVC videos compatible with more than 1 billion DivX certified devices, DivX Converter is able to convert FLV to H264. Not limited to local importation, the video converter allows for video importing via cloud such as Google Drive or Dropbox. DivX Converter allows you to pass through original audio or add up to 8 audio tracks and subtitles (SRT, ASS, SSA). With this video converter, you can select your preferred audio output format, and easily change the order of your audio and subtitle tracks with a simple click. Check out guide below to convert FLV to H264 with DivX Converter.

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Step 1. Add Source FLV Video File
There are two ways for you to add source FLV video file. On one hand, you can click “Add Files” in the submenu to choose and add source FLV video file. On the other, you can directly drag and drop source video file into the main interface of DivX Converter.

Step 2. Choose H264 Output Video
On the drop-down list of output profile setting, choose any video format that is codec with H264 such as MP4 or MKV.

Step 3. Convert FLV to H264
After output video format is selected, click “Start” at the top left to convert FLV to H264. After a while, you will get H264 video file in the output directory.

Part 3. Convert FLV to H264 with iWisoft Free Video Converter

iWisoft Free Video Converter is able to convert videos between all popular formats like AVI, MPEG, WMV, DivX, XviD, MP4, H.264/AVC, AVCHD, FLV, MKV, RM, MOV, 3GP, and audio MP3, WMA, WAV, RA, M4A, AAC, AC3, OGG fast and easily. Like Leawo Video Converter, this video converter enables you to edit video files as well including video cropping, video trimming, video merging, adding watermark, and adding special effects. The video converter is highly praised for its easy-to-use feature, fast conversion speed, and excellent output quality. Most importantly, this video converting program is totally free. Download and install iWisoft Free Video Converter, and then we can start to convert FLV to H264.

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Step 1. Add Source FLV Video File
Click “Add” button on the toolbar or "File> Add Files…" to choose and import source FLV video file.

Step 2. Set H264 as Output Video Format
After source TS file is imported, click "Profile" drop-down button to choose the formats you need. Here to convert FLV to H264, you can choose MP4 as the output format as MP4 is codec with H264, and then click the button in Output bar to choose destination folder for saving output files.

Step 3. Start to Convert FLV to H264
After choosing the format, you only need to click "Start" button on the main window to start converting FLV to H264. After a while, you will get converted video file in H264 format in the destination folder you just set.

Part 4. Convert FLV to H264 with Totally Free Converter

The fourth method to convert FLV to H264 is to use Totally Free Converter, which supports a wide range of video and audio formats. It can convert FLV to H264. Check out the detailed steps.

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Step 1. Add Source FLV Video
On the interface of Totally Free Converter, click “Video & Audio” to choose and add source FLV video.

Step 2. Choose Output Video Format
Once source FLV video is imported, you will be prompted with a small window panel, where you can choose output video format, rename output video name, and choose output folder. To convert to H264, you can choose MP4 as the output video format.

Step 3. Start to Convert FLV to H264
After you set the output video format, name and folder, click “Save” to start to convert FLV to H264. After a while, the converted result will be saved in the folder you just set.

Part 5. Convert FLV to H264 with Online-Convert

Online-Convert is a free online file converter that lets you convert media easy and fast from one format to another. This online video converter supports a lot of different source formats. Check out the guide below to convert FLV to H264 with Online-Convert.

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Step 1. Choose Output Format
Go to the official website of Online-Convert, and go to Video converter tab. To convert to H264, you can choose “Convert to MKV” under the drop-down list, and then click “Go”.

Step 2. Import Source FLV File
Click “Choose Files” to choose and add FLV file. After FLV file is imported, you can perform optional settings as well.

Step 3. Start to Convert FLV to H264
Click “Start Conversion” to start convert FLV to H264. After a while, you can get converted H264 video files.

Part 6. Convert FLV to H264 with ClipConverter

Clip Converter allows you not only to convert video files, but also to download video files online. It supports YouTube (HD, 720p, 1080p, 4K), Vimeo, Facebook Video and many more. You can upload your local video file for converting or just paste the URL of your source video. Check out to convert FLV to H264 online with ClipConverter.

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Step 1. Add Source FLV File
If you have URL, paste URL of your source FLV file. Instead, you can upload your local FLV file.

Step 2. Choose H264 Output
To get H264 video output, you can select MKV or MP4 format and then choose the quality (720p, 1080p, 2k, 4k) for the conversion.

Step 3. Start to Convert FLV to H264
Click “Start” to begin conversion process. After a while, you can download the converted file in H264 video codec.