Convert MP4 to SWF Format to Embed into Web Pages/Blogs/Emails
Want to share MP4 videos clips online or upload/embed flash videos to blogs, emails, or web pages? Converting MP4 to SWF format would be a good solution due to SWF format excellent quality and ability to store many types of media such as video, an animation, games, etc. In this article, a professional handy MP4 to SWF converter–WinX HD Video Converter Deluxe, works like a charm.
Free Download the Best MP4 to SWF Converter for Windows and macOS
With support for hardware acceleration technology (Intel QSV, Nvidia CUDA/NVENC), WinX HD Video Converter Deluxe can convert video from MP4 format to SWF in blazing fast speed, at least 5x faster than Handbrake, VLC, and online tools. Its built-in High-Quality Engine makes output quality the same as the source videos. WinX HD Video Converter Deluxe also downloads and converts videos from YouTube, Vimeo, Dailymotion, 1000+ sites to MP4, FLV, SWF, MOV, etc.
How to Convert MP4 to SWF Flash Video with WinX HD Video Converter Deluxe?
Preparation: Free download and install this MP4 to SWF converter for Windows or Mac. WinX HD Video Converter Deluxe is fully compatible with the latest operating system like Windows 10 system, macOS Big Sur.
Step 1: Load source MP4 video files.
Run this MP4 to SWF converting program and click the "+ Video" button to enter into the file selection window, locate the original MP4 video file and import the target MP4 video into this MP4 to SWF video converter. Or directly drag your MP4 videos to the main interface of the program. You can add multiple MP4 files at a time. Batch MP4 to SWF conversion is supported.

Step 2: Set the SWF video as the output video format.
In the pop-up output profile window, you can see all popular formats devices included in different categories. Click under the directory: Common Video Profile --> PC General Video --> SWF Video. Then click the "OK" button to save the change.

Tips: Before creating SWF from MP4, you can optionally click the "Edit" button to further customize the video, such as cutting, adding subtitles, cropping & expanding the video to the proper size to remove black bars, trimming the video to split apart; Also click the settings icon to change video audio parameters including codec format, resolution, frame rate, bit rate, aspect ratio, etc; Click the "Merge" icon to combine several MP4 videos into one output file in SWF format.
Step 3: Start the MP4 to SWF conversion.
Click the "Browse" button to select a target folder to store the SWF Adobe Flash video and tap the "RUN" button to start converting MP4 to SWF to create flash videos for later streaming online, emailing, or sharing. After that, you can resort to some program and play SWF files on Windows 10.
Wikipedia: SWF File Format
SWF is an Adobe Flash file format which is widely used for streaming flash videos over the web. SWF files can contain animated vector graphics and sound and are also used for programs, commonly browser games by using ActionScript. SWF files can be generated with several Adobe products including Flash, Flash Builder (an IDE) and After Effects, etc. >> Read more about SWF on Wikipedia.
SWF vs FLV: Differences
Both SWF and FLV are Flash video formats and largely used on the internet. However, they are different. FLV (Flash Video) is a video container format that mainly contains videos, SWF (Shockwave Flash) is a file format that can contain several different types of media, such as video, animation, games, even little applications. SWF files can also be scripted with Actionscript to offer interaction. FLV is lossy, while SWF is lossless, so SWF files may have larger file sizes. SWF is suitable for storing long videos because SWF has frame limits.