Convert MP4 to FLV on Mac and then Upload FLV to YouTube

Part 1: Basic Knowledge About MP4 and FLV

What is MP4?

MP4 (H.264/MPEG-4 AVC and MPEG-4) format is one of the most used file types for a wide selection of mobile players, computer applications and Android-based products. For some reason, if you want to upload an MP4 video and distribute on a YouTube-like website, you'll probably need to compress .mp4 to .flv flash format to make the file a smaller size.

What is FLV?

FLV is a flash file format that's designed to play in a Flash Player or web browser plug-in. It is the way to watch videos on the Internet, and many of video-sharing websites like YouTube encode their media as FLV.

Part 2: How to Convert MP4 to FLV on Mac with Leawo Video Converter for Mac

Leawo Video Converter for Mac is a multifunctional media converter that could handle media conversions between video and audio files of various formats. It could convert video and audio files between 180+ formats like MP4, AVI, FLV, MPEG, MKV, MOV, WMV, MP3, AAC, etc. To put it in details, this file converter supports a variety of video files input including MP4, AVI, MOV, MKV, MTS, FLV, etc., and at the same time the program is able to convert various audio files like MP3, AAC, FLAC, AC3, etc. Leawo Video Converter is able to output file in various formats, such as Common Video (MP4, H.265 MP4, MKV, H.265 MKV, MOV, etc.), Common Audio (AAC, AC3, WAV, MP3, WMA, FLAC, etc.), HD Video (HD MP4, HD AVI, HD TS, HD VOB, etc.), and 4K Video (4K MP4 and 4K MKV). It could act as a professional Mac MP4 to FLV converter to help you easily convert MP4 videos to FLV format for uploading to online video sharing sites like YouTube, FaceBook, MySpace, etc. Users around the world will find the program friendly as it supports all together 11 kinds of languages: English, German, Japanese, Simplified Chinese, Russian, Hungarian, Armenian, Spanish, French, Portuguese and Dutch.

After you download and install Leawo Software's MP4 to FLV Converter Mac on your Mac, you can follow the step-by-step guide below to learn how to convert MP4 to FLV on Mac. If you are Windows users, you should switch to its Windows counterpart – Leawo Video Converter to convert MP4 to FLV on Windows.

Step 1: Import Source MP4 Video into the Converter

Launch the converter to enter the main interface, switch to "Convert" tab, and click "Add Video" button to browse and load source MP4 video file into this Mac video converter

Step 2: Set FLV as Output Format

Move mouse to the drop-down box right before the big green "Convert" button, click it and then select "Change" option to enter the "Profile" panel to select FLV as output format from "Format" group.

Tips: If you're an advanced user, you could click the same drop-down box and choose "Edit" to enter "Profile Settings" panel where you could customize the video and audio parameters of output files, including: video codec, audio codec, bit rate, aspect ratio, frame rate, channel, etc.

Step 3. Convert MP4 to FLV

After setting output profile, return to the main interface and then click the big green "Convert" button to call out the output directory setting panel, where you need to set output directory in the "Save to" box. Click the bottom "Convert" button on the sidebar to start to convert MP4 to FLV on Mac.

Part 3: How to Convert MP4 to FLV on Mac with Emicsoft Video Converter

Emicsoft Video Converter for Mac is able to convert video files among many formats such as AVI, MP4, MOV, M4V, MXF, MTS, M2TS, WMV, FLV, VOB, MKV, DIVX, XVID, RM, RMVB, WEBM, H.264/MPEG-4, H.265, HEVC, etc. Moreover, Emicsoft Video Converter for Mac can play the role of an audio converter or extractor, which means it can extract any video included audio tracks, and save as popular audio formats, mp3, aac, wma, m4a, m4r, etc. This video converter also supports directly convert one audio format to another to enable your digital mutimedia devices compatible. Check out the guide below to convert MP4 to FLV on Mac with Emicsoft Video Converter.

Step 1. Add Source MP4 File

On the main interface of Emicsoft Video Converter for Mac, click "Add File" to load one or more MP4 files into the Mac MP4 converter. All files will be placed on the File Name list. You could watch these files on preview screen.

Step 2. Choose and Set FLV as Output Format

Select "General Video" from Profile, and then choose "FLV" as output format. After that, you can click "Settings" button to modify profile parameter settings.

Step 3. Start to Convert MP4 to FLV on Mac

Before conversion process takes place, click "Browse" button to set a folder to contain the output file. Click "Start" button at the bottom right to the conversion process from MP4 to FLV. The converting progress is shown by yellow bars, so you should wait until the bars go to the end.

Part 4: How to Convert MP4 to FLV on Mac with Free Online File Converter

Thirdly, we can make use of a Free Online File Converter to convert MP4 to FLV on Mac.

Step 1. Add Source MP4 Video File

On the main interface of this free online file converter, click "Browse" button to choose and add local MP4 video file.

Step 2. Choose FLV as Output Format

After source MP4 video file is imported, click the drop-down box under Output format, and then choose FLV as the output format in order to convert MP4 to FLV.

Step 3. Start to Convert MP4 to FLV

Click "Convert" button to start conversion from MP4 to FLV. You can check the box to enable the function of sending a download link to your email. After the conversion process is completed, you can download the converted file now in FLV format.

Part 5: How to Convert MP4 to FLV on Mac with Apowersoft Free Online Video Converter

Here in Part 5, I am going to use Apowersoft Free Online Video Converter to show you how to convert MP4 to FLV. As a great application, this free online video converter allows you to convert video files to any type of video or audio formats at an amazing speed. At the same time, users can customize and edit output video or audio file. Check out below to convert MP4 to FLV with Apowersoft Free Online Video Converter.

Step 1. Add Source MP4 File

On the interface of Apowersoft Free Online Video Converter, click "Add files" to add source MP4 file.

Step 2. Set FLV as Output Format

Click the Format box to pop up a list where you need to choose and set FLV as the output video format for converting MP4 to FLV.

Step 3. Start to Convert

Before the conversion begins, you can click the Settings icon to customize and edit output FLV video to meet your own demand. At last, click "Convert" to start to convert MP4 to FLV.

Part 6: Upload FLV Video to YouTube

After you convert MP4 to FLV, you can follow the instruction below to upload FLV videos to YouTube.

• Sign into your YouTube account.
• Click on "Upload" at the top of the page.
• Before you start uploading the video you can choose the video privacy settings.
• Select the video you'd like to upload from your computer.
• As the video is uploading you can edit both the basic information and the advanced settings of the video, and decide if you want to notify subscribers (if you uncheck this option no communication will be shared with your subscribers). Partners will also be able to adjust their Monetization settings.
• Click "Publish" to finish uploading a public video to YouTube. If you set the video privacy setting to "Private" or "Unlisted", just click "Done" to finish the upload or click "Share" to privately share your video.
• If you haven't clicked Publish, your video won't be viewable by other people. You can always publish your video at a later time in your Video Manager.