3 Best Ways to Convert MP4 to SWF
There are a few easy methods to convert MP4 to SWF. You can choose the one that suites you best.
Method 1. Convert MP4 to SWF with Professional Software
Professional MP4 to SWF software programs are able to provide high quality conversion with high speed and batch conversion of multiple files, among other useful features. Below are the best MP4 to SWF converters for Mac and Windows users.
1. iFunia Video Converter (Mac)
iFunia Video Converter for Mac can convert your MP4 files to SWF on Mac without losing quality with fast conversion even when dealing with large files. In addition to MP4, it can also convert videos of various other formats such as AVI and MOV to SWF. This tool is easy to use and versatile with the following main features.
- Convert video files to SWF format with high quality
- Convert videos and audios between 400+ popular formats
- Download HD (including 1080p) videos from YouTube, Facebook, Vimeo and 1000+other sites
- Batch conversion/download
- Rip and burn DVD
- Video editing with functions such as Watermark, Effects, Merge, Subtitles, etc.
Here are the instructions to convert MP4 to SWF on Mac with this app.
1. Download and install iFunia Video Converter on your Mac. It supports OS X 10.10+, including macOS 10.13 High Sierra.
2. Drag and drop one or multiple MP4 files to this MP4 to SWF converter which can batch convert MP4 files to SWF.

3. Click the RVC button to open the output format window. Go go General Video, scroll down and select SWF. Click the conversion button, and let the app do its magic. You can use the same steps to convert videos of other formats to SWF.
2. Kvisoft Video to Flash (Windows)
As the name suggests, it is a software dedicated to converting MP4 to SWF. It allows users to effortlessly convert MP4 videos to SWF or FLV on Windows. In addition, basic video editing features such as adding watermark and effects are also available. While the interface looks a bit outdated, the converter is simple and easy to use. Here is a short list of what this converter can do.
- Converts videos to SWF and FLV
- Allows users to do basic vide editing
- Can change bit rate, frame rate, video resolution, audio sample rate, etc.
1. Download and install this MP4 to SWF converter on your computer. It supports Windows XP and later versions.
2. Click the Add Video button to import video files. Drag-and-drop is not supported.
3. Click the Formats button, and a window will appear. Edit and adjust the added video if necessary.
4. Click Next, and you will find four options (all selected by default). Unselect the unneeded ones and click the big Start button. After the conversion is completed, click Browse to find the converted file.

Method 2. Convert MP4 to SWF Using Online Converter
There are many free online MP4 to SWF converters available. Some of them offer decent conversion service, but some are not good to use with annoying and potentially malicious pop-ups. The converters recommended below are ad-free and safe to use. It’s worth mentioning that Zamzar, one of the most known online file converters, currently doesn’t support the conversion between MP4 and SWF.
1. convertio.co
Convertio is one of the best web-based tools that can convert MP4 to SWF format. In addition to supporting video files, it can also convert documents, images, e-books and audios. Since founded in 2014, it has converted more than 151 million files, which is quite impressive. After adding MP4 file to convert, you only need to choose output format (SWF in this case) and click Convert.

- PROS
- Allows users to import files from computer, Dropbox and Google Drive
- Supports major video formats including MP4 and SWF
- Allows users to save converted files directly into cloud storage
- CONS
- Maximum file size of 100 MB for free conversion
- Only allow users to convert up to 2 files at the same time
2. cloudconvert.com
Versatile and powerful, CloudConvert can not only convert MP4 to SWF online smoothly but also convert files of different types and formats such as documents, spreadsheets, music files, archives, etc. It only requires three easy steps to do the conversion. Add file from your computer or file storage services, choose output format and click the conversion button.

- PROS
- Support major formats of various file types
- Allows users to upload files from computer as well as file storage services
- Enables users to trim videos and adjust codec, bit rate, aspect ratio, etc.
- CONS
- Batch conversion is not available for free conversion
- Maximum 1GB file size for free conversion
3. freefileconvert.com
This is another free online MP4 to SWF converter. It supports a wide variety of file types and lists on its home page the popular conversion types for quick navigation. After the conversion from MP4 to SWF is completed, the file will be available for download, but the file will only be kept on the server for 24 hours. For registered users, the converted files will be accessible for longer period of time.

- PROS
- Supports 22 video formats including MP4, SWF, AVI, etc.
- Also supports documents, fonts, audios and so on
- Allows users to import files from cloud service provider
- CONS
- Maximum 300 MB file size
- Converted files will be deleted after 24 hours
4. aconvert.com
Just like the MP4 to SWF online converters that have already been mentioned, this one is also versatile and powerful, with support for tons of file types and formats. In addition to converting, it can also cut, merge, rotate, crop and pad videos. Before hitting the conversion button, you can also change video size, frame rate, aspect (4:3 or 16:9) and a couple of other options.

- PROS
- Supports lots of video formats and other types of files
- Allows basic editing such as cutting and rotating
- Can also convert web pages to PDF
- CONS
- File size can only be up to 200M.
- A bit slow compared with some other online converting tools
Method 3. Convert MP4 to SWF Using Adobe Software
Initially developed by FutureWave Software, the SWF format is now under Adobe Systems and is compatible with several Adobe products. The steps below will show you in detail how to convert MP4 to SWF format using Adobe Media Encoder.
1. Add a MP4 file to Adobe Media Encoder by clicking the + button.

2. Click the arrow down icon under the Format option and choose SWF as the output format.
3. This step is optional. If you want to change frame rate, resolution, etc. of the output SWF file, you can do this easily in Adobe Media Encoder.
4. Choose a folder where you want the converted file to be saved. Click the play button to start the conversion.
