Part 1: MP4 conversion suggestion for Motorola Razr 40 (on Windows)
Part 2: MP4 conversion suggestion for Motorola Razr 40 (on macOS)

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To convert MP4 video files for Motorola Razr 40 playback on Windows, do as below:

Download and install Video Converter on your Windows computer.

Step 1: Import your video files
Click “Add File” to load your video files that you want to convert into this program.

Step 2: Select output format for Motorola Razr 40
Click “Profile” to select “Motorola” > “The corresponding Profile of your Motorola phone “ as output format. This format profile will ensure a good performance while playing with Motorola Razr 40.

If you can’t find a suitable profile for Motorola Razr 40, you can also select it directly, as shown in the following figure.

Tips:
If necessary, you can click “Settings” button to modify video and audio parameters like encoder, resolution, frame rate, bitrate, aspect ratio, sample rate, and audio channels.

Similarly, if you don’t find a suitable profile, you can also set it directly for the general profile, as shown in the figure below

Step 3: Click “Convert” to start.

As soon as the conversion is complete, click “Open Folder” to get the generated MP4 files that are suitable for playing on your Motorola Razr 40. No audio lost issues will occur any more.

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To convert MP4 video files for Motorola Razr 40 playback on Mac, do as below:

Download and install Video Converter on your Mac computer.

Step 1: Import your video files
Click “Add File” to load your video files that you want to convert into this program.

Step 2: Select output format for Motorola Razr 40
Click “Profile” to select “Motorola” > “The corresponding Profile of your Motorola phone “ as output format. This format profile will ensure a good performance while playing with Motorola Razr 40.

If you can’t find a suitable profile for Motorola Razr 40, you can also select it directly, as shown in the following figure.

Tips:
If necessary, you can click “Settings” button to modify video and audio parameters like encoder, resolution, frame rate, bitrate, aspect ratio, sample rate, and audio channels.

Similarly, if you don’t find a suitable profile, you can also set it directly for the general profile, as shown in the figure below

Step 3: Click “Convert” to start.

As soon as the conversion is complete, click “Open Folder” to get the generated MP4 files that are suitable for playing on your Motorola Razr 40. No audio lost issues will occur again.