Many web projects, asset libraries, and corporate documents require converting MP4 videos to the WebM format. This article uses HeSoft Doc Batch Tool as an example, combining the pre-processing MP4 folder, post-processing WebM folder, and software interface to explain how to access the video tool, select "Convert Video to WebM," import multiple videos, verify records, set the output location, and complete batch processing, helping users improve file processing efficiency with office software.
If you are responsible for website content maintenance, short video material archiving, or online course page creation, you may often receive a batch of MP4 video files. Development colleagues request WebM format, operations colleagues hope for a unified format, and design colleagues want the file names to remain unchanged. At this point, the biggest trouble is not "whether it can be converted," but "how to quickly, stably, and accurately convert many videos together."
This article focuses on "converting multiple video files to WebM with one click," explaining how to use HeSoft Doc Batch Tool for batch video format conversion. It is a tool software designed for office file processing, with the advantage of consolidating repetitive file operations into batch tasks, such as batch renaming, batch organization, and batch conversion of video formats. For users who need to process a large number of files, this is more suitable for daily office scenarios than opening converters one by one.
Applicable Scenarios: Web Publishing, Material Delivery, and Format Unification
WebM is commonly used for web video playback and page material references. Compared to a single video played locally, web projects emphasize format uniformity, clear file paths, and stable naming. If a folder contains 8 MP4 videos that all need to be used on a front-end page, manual conversion will present several problems: files are easily missed, the output directory might be chaotic, file names might be automatically altered by the software, and you'll need to compare them one by one after processing.
Using a batch processing tool can turn these steps into a complete workflow: first select the "Convert videos to WebM" function, then add all videos to be converted to the list at once, set the save location, and finally output them uniformly. It is especially suitable for the following types of users:
- Website Operators: Need to convert promotional, event, and product showcase videos into a web-friendly format.
- Front-end or Content Maintenance Personnel: Need to unify materials into WebM for easier project directory management.
- Corporate Administrative and Training Staff: Need to organize a large number of course videos, meeting videos, or demo videos.
- Material Library Managers: Need to archive different batches of videos in a unified format.
Whether you need to process mp4, mov, avi, or other common video formats, the core idea is the same: do not repeat manual operations, but let the office software execute them in batches according to task rules. The screenshots in this example show the process of batch converting MP4 to WebM.
Effect Preview: From a Group of MP4 Files to a Group of WebM Files
Before processing, the folder contains a batch of MP4 videos. The screenshot shows file names including Video test 20.mp4, Video test 21.mp4, Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, Video test 26.mp4, Video test 27.mp4, Video test 29.mp4. These files have different visual content, like birds, flower fields, golden particles, outdoor scenery, etc., but their extensions are uniformly .mp4.

After processing, the same batch of materials has become .webm files. You can see that the main part of the file names still corresponds to the original numbers, only the extension has changed from .mp4 to .webm, for example, Video test 20.webm, Video test 21.webm, Video test 22.webm, etc. This correspondence is very critical for batch processing, as it allows users to quickly confirm which files have been converted.

From these before-and-after screenshots, you can intuitively see that this article addresses the problem of batch format unification, not single video transcoding. In actual work, the greater the number of files, the more obvious the benefit of batch processing.
Operation Steps: Complete Batch Video-to-WebM Conversion as Shown in Screenshots
Step 1: Find the WebM Conversion Function in Video Tools
After opening HeSoft Doc Batch Tool , first look at the left navigation bar. The screenshot shows the left side contains categories like Home, Task Flow, All Tools, File Name, Folder Name, File Organization, Word Tools, Excel Tools, PowerPoint Tools, PDF Tools, Text Tools, Image Tools, Video Tools, Audio Tools, etc. Since the goal is to convert video format, you should click Video Tools.
After entering Video Tools, the page displays multiple video-related function cards. From the screenshot, you can see that video format conversion functions include "Convert Video to MP4," "Convert Video to AVI," "Convert Video to MKV," "Convert Video to MOV," "Convert Video to FLV," "Convert Video to WMV," "Convert Video to WebM," "Convert Video to MPEG," and others. Here you need to click 11. Convert Video to WebM.

The expected result of this step is entering the WebM conversion task page. When selecting the function, be careful not to click "Convert Video to MP4" or another format, as different functions correspond to different output extensions. For SEO, web resources, and front-end projects, if WebM is explicitly required, you must select the WebM function.
Step 2: Import the Videos Needing Batch Conversion
After entering the function page, the top displays "Convert Video to WebM," indicating the current task type is correct. There are several main operation buttons at the top of the page, among which those related to importing files are Add Files and Import Files from Folder. If your files are scattered in different locations, you can click "Add Files" to select them batch by batch; if all videos are already in one directory, it is recommended to use "Import Files from Folder."

After importing, the files will appear in the table below. The table lists serial number, name, path, extension, creation time, modification time, and actions. The screenshot shows 8 records, with the extension mp4, and the path located under a testing folder on the desktop. This indicates that the software has recognized these videos to be converted and included them in the batch processing list.
The purpose of this step is not just "putting the files in," but also "confirming the task scope." Before batch conversion, it's best to check if the record count matches expectations. If you originally planned to convert 8 videos and the bottom shows a record count of 8, the quantity is basically correct. If inconsistent, you can go back to the folder to check for missing files, or use the delete action in the interface to remove mistakenly imported records.
Step 3: Verify File Names, Extensions, and Paths
The biggest fear in batch processing is scope errors, such as accidentally importing the wrong folder or adding materials that shouldn't be transcoded into the list. The table in the screenshot provides path and extension information, allowing users to verify this. The Name column shows each video's file name, the Path column shows the file's location, and the Extension column shows mp4.
For office scenarios, it is recommended to complete the following checks before clicking next: Are the file names the materials for this project? Is the path from the correct folder? Is the extension the source format to be converted? Does the record count match the quantity in the source folder? This can prevent discovering only after task execution that the wrong files were converted.
If you find a record that doesn't need processing, you can use the delete icon in the actions column on the right side of the table to remove it. The screenshot shows a red delete icon to the right of each record; such a design is specifically for allowing users to clean up the list before the batch task begins.
Step 4: Click Next and Set the Save Location
After confirming the list is correct, click the Next button at the bottom of the page. The process prompt at the top of the interface shows that the current process includes "Select records to process," "Set save location," and "Start processing." Therefore, clicking next will lead to the save location setting step.
The choice of save location will directly affect subsequent file management. It is recommended to output the WebM files to a separate folder rather than mixing them with the source MP4 files. For example, you can create directories like "WebM Results," "WebM Output Files," or "Web Videos WebM." This way, after processing is complete, you can quickly open that folder to check the output results, and it's also convenient for delivering the entire batch of files to front-end, operations, or clients.
If your team has a fixed project directory, you can also save according to the project structure, such as assets/video/webm or "Project Name-Video Materials-WebM." Although the screenshot does not show the specific save location page, it can be reasonably inferred from the process steps that the software will require setting the output location before processing. Users just need to follow the interface prompts to complete it.
Step 5: Start Processing and Verify the Conversion Results
After completing the save location settings, enter the start processing phase. The software will execute the WebM conversion in batches according to the pending list. During processing, it is recommended not to move the source videos or close the software window executing the task, to ensure the batch conversion completes smoothly.
After processing is finished, open the save directory to view the results. In an ideal state, the number of output files should match the number of pending records; the main body of the file names should be consistent with the source files; the extension should change from .mp4 to .webm. You can also spot-check a few WebM files to confirm they play normally or can be referenced by subsequent projects.
Common Questions and Notes
Is the WebM file suitable for all scenarios?
WebM is commonly used in web-related scenarios, but different platforms and business systems may have different requirements for video formats. If the other party explicitly requires MP4, do not convert to WebM; if the web project or material specification requires WebM, follow the process in this article for batch conversion.
Can I import an entire folder at once?
From the screenshot, you can see the interface provides an "Import Files from Folder" button. For a large number of videos, this is more efficient than clicking add one by one. It is recommended to first gather the videos to be converted into the same folder, and then use this entry to import them.
Why check the record count before conversion?
The advantage of batch processing is speed, but if the task scope is wrong, it will also quickly generate a batch of erroneous results. Checking the record count, path, and extension can eliminate problems before starting, avoiding rework.
How can I make the naming clearer after conversion?
In this example, the converted file names retain the 'Video test' numbers, only changing the extension. In actual work, it is recommended to standardize the source file names before conversion, like "Product_Intro_01.mp4" or "Training_Course_Section_1.mp4," making the generated WebM files easier to identify.
Summary: Turn Video to WebM Conversion into a Controllable Batch Task
Converting multiple video files to WebM may seem like just a format change, but in office scenarios, it often involves material organization, project delivery, and team collaboration. Using HeSoft Doc Batch Tool , you can merge the originally repetitive steps of opening, selecting, exporting, and naming into a single batch task.
Following the process in this article, you only need to enter Video Tools, select "Convert Video to WebM," import files or a folder, verify the list, set the save location, and then start processing. After processing is complete, just check the results based on file count, file name, and extension. Next time you face tasks like batch MP4 to WebM conversion, web video format unification, or material library organization, you can directly adopt this workflow to reduce repetitive labor and improve file processing efficiency.