Many video materials need to have unified copyright marks, sample marks, or source descriptions added before internal circulation, customer previews, or platform release. If you open video editing software one by one to manually add watermarks, it is not only time-consuming but also prone to inconsistencies in text, angle, and size. This article takes HeSoft Doc Batch Tool as an example to demonstrate how to batch import multiple MP4 videos in office software, set text watermark content, font size, rotation angle, tiling method, and density, and output watermarked video files in one go, suitable for office scenarios that need to efficiently process a large number of video materials.
In daily office work and content management, you often encounter this need: a folder contains dozens or even hundreds of videos, and before sending them to clients, colleagues, or external partners, you need to uniformly add text watermarks like "Sample," "Internal Material," "Original," or "Copyright." The traditional approach usually involves opening editing software, importing videos one by one, adding text, adjusting positions, and exporting files. This is acceptable for a small number of videos, but if the volume is large, this repetitive operation significantly reduces efficiency and easily leads to inconsistent watermark styles due to manual setup errors.
This article addresses the problem of "batch adding text watermarks to many video files." We will use the office software shown in the screenshots— HeSoft Doc Batch Tool . Its positioning is not as a complex editing software, but as a batch file processing tool for office scenarios. Its core value lies in reducing repetitive work, allowing users to batch process files through a wizard-style step-by-step process. Below, combining before-and-after effect images and software operation screenshots, we will explain how to add unified, tilted, tiled text watermarks to multiple MP4 videos.
Applicable Scenarios: When do you need to batch add text watermarks to videos?
Batch adding text watermarks to videos is suitable for many office and content circulation scenarios. For example, when a photography and videography team sends rough cut samples to a client, they might want the video screen overlaid with "Sample" or "Original" to prevent unconfirmed versions from being used directly; when a corporate training department distributes internal course videos, they might want to add "Internal Material" or the department name for easy file source identification; E-commerce, short video operations, and educational institutions also often need to add a uniform identifier to batches of MP4, MOV, AVI, and other videos when organizing large amounts of material.
The characteristics of this type of need are: large number of videos, consistent operation rules, and high repeatability. Each video needs the same text added, with similar opacity, angle, and arrangement. If manual editing is used, the cost of batch processing is very high; if you use the "Add Watermark to Video" function in HeSoft Doc Batch Tool , the process of "adding files, setting watermarks, choosing save location, and starting processing" can be broken down into clear steps, executed in batch after a one-time setup.
Effect Preview: The video has no watermark before processing, and is uniformly covered with a text watermark after.
Before starting the operation, let's first look at the comparison before and after processing. The original video screen contains only the original content, without any text identifiers. The example image is a video of a bird; the player shows the file name as "Video test 20," the image itself is clean, without overlaid copyright text or sample identifiers.

After processing is complete, the same video footage is overlaid with multiple sets of red text watermarks. The text content is "Original," arranged diagonally at about a 45-degree angle. The watermark is not placed in just one corner but distributed in a tiled pattern across multiple positions on the screen, suitable for sample protection, copyright notices, and source marking. Because the watermark has a certain transparency effect, the main content of the video is still watchable, while the text identifier is clearly visible.

As you can see from the results, the goal of this operation is not complex video editing, but applying the same set of text watermark rules to multiple video files in batch. For office scenarios requiring batch processing of MP4 videos and uniformly adding text watermarks, this method is more direct and makes it easier to ensure consistent results.
Step 1: Enter Video Tools and select the "Add Watermark to Video" function
After opening HeSoft Doc Batch Tool , first find "Video Tools" in the left navigation pane. As seen in the screenshot, besides office file processing modules like Word Tools, Excel Tools, PowerPoint Tools, PDF Tools, and Image Tools, the software also provides "Video Tools" and "Audio Tools." This indicates the software is positioned as a comprehensive office batch processing tool, capable of handling not only documents but also video, audio, and other files.
After entering "Video Tools," the main interface displays multiple video-related batch functions, including "Add Watermark to Video," "Convert Video to MP4," "Convert Video to AVI," "Convert Video to MKV," "Convert Video to MOV," etc. Our task is to batch add text watermarks to videos, so click the first function card, "Add Watermark to Video." The description below this card says, "Batch add text or image watermarks to video files," which perfectly matches our needs.

The purpose of this step is to enter the correct batch processing function. The expected result is opening the "Add Watermark to Video" operation wizard, where you can subsequently import the video files to be processed. For users, if the goal is just to convert video formats to MP4, AVI, MOV, etc., they can choose other functions; if the goal is to add text or image watermarks, they should select "Add Watermark to Video."
Step 2: Import the video files to be batch processed
After entering the "Add Watermark to Video" function, the top of the interface displays a clear process progress: Step 1 "Select records to process," Step 2 "Set processing options," Step 3 "Set save location," Step 4 "Start processing." This wizard-style design suits office users, as each step only requires completing the current task, reducing the learning cost for batch processing video files.
In Step 1, you can import single or multiple videos via the "Add Files" button at the top, or import videos from a specific folder all at once through "Import Files from Folder." The screenshot shows 6 MP4 files have been imported, with file names including "Video test 2.mp4," "Video test 5.mp4," "Video test 20.mp4," "Video test 32.mp4," "Video test 33.mp4," "Video test 51.mp4." The list also displays information like the path, extension, creation date, and modification date, allowing users to verify they have selected the correct videos.

The operational purpose of this step is to place all videos that need watermarks into the pending processing list. The expected result is seeing the records to be processed in the list, along with the total count at the bottom. For example, the screenshot shows "Records: 6," indicating this batch will process 6 video files. If unwanted videos are imported, they can be removed via the delete icon on the right side of the list; if the list content is incorrect, you can use "Clear" to reselect. After confirming the pending videos are correct, click "Next Step" at the bottom to enter the watermark parameter settings.
Step 3: Select Text Watermark and enter the content
Upon arriving at Step 2 "Set processing options," you first need to determine the watermark type. The "Watermark Type" area in the screenshot provides "Text Watermark" and "Image Watermark" options. Since the requirement of this article is to batch add text watermarks to videos, select "Text Watermark." If users need to add company logos or icon-type watermarks, then they would select Image Watermark.
After selecting Text Watermark, enter the desired content in the "Watermark Text" input box. The sample text in the screenshot is "Original." In actual office work, this can be changed to "Internal Material," "Sample," "For Preview Only," "Copyright," "Company Name," etc. It's important to note that the watermark text will be applied in batch to all video files in the list, so it's recommended to confirm the text is correct before proceeding to the next step to avoid rework after batch export.

The purpose of this step is to determine the basic content of the watermark. The expected result is that the software knows which text to overlay on each video. For batch video watermarking, the text content is one of the most critical parameters, as it directly affects the expressive effect of copyright notices, sample identifiers, or file source descriptions.
Step 4: Set font size, rotation angle, tiling method, and density
On the same settings page, you can continue to adjust the display method of the text watermark. As seen in the screenshot, the "Font Size" switch is enabled, with a value of 30%, indicating the watermark text size is displayed according to the current setting. This value affects the proportion of text on the video screen: if the video resolution is high or if you want the watermark to be more prominent, you can increase it appropriately; if you only need a light prompt, you can choose a smaller font size.
The "Rotation Angle (Clockwise)" is also enabled, with the example set to 45. In the processed effect image, the text watermark is arranged diagonally, which is controlled precisely by this rotation angle. Diagonal watermarks are more suitable for covering large areas of the video compared to horizontal ones, especially for sample previews and anti-theft scenarios.
Below the screenshot, you can also see "Fill Method" selected as "Tile," and "Tile Density" selected as "Normal." This indicates the watermark isn't displayed just once but is repeatedly tiled across the screen at a certain density. In the example result, multiple "Original" watermarks are distributed in different positions on the screen, which is the effect of tiled watermarks. If the tiling density is too low, the protective effect might not be evident enough; if too high, it might affect the viewing experience. Normal density is usually suitable for striking a balance between viewability and marking strength.
Furthermore, the page also displays options or switches like "Color and Opacity," "Auto Stroke," and "Show Grid Lines." The processed effect in the screenshot appears red and translucent, indicating that the text color and opacity will affect the final look during actual processing. When setting the watermark, it's recommended to choose a color that is easy to recognize against the video background but doesn't overly obscure the main subject, and use opacity to make the watermark visible without affecting content preview.
Step 5: Set the save location and start batch processing
After completing the watermark parameter settings, click "Next Step" at the bottom of the page. According to the process prompts at the top of the interface, this leads to Step 3 "Set Save Location," and then Step 4 "Start Processing." Although the screenshots provided in this article mainly show the first two steps, the software wizard clearly shows the subsequent workflow: first specify the save location for the processed videos, then execute the batch processing.
When setting the save location, it is recommended not to overwrite the original videos directly. A safer practice is to save the output files to a new folder, such as "Watermarked Videos" or "Output Files." This preserves the original material and makes it easy to compare files before and after processing. If you later find the watermark text, angle, or density needs adjustment, you can re-process them in batch based on the original videos.
Upon entering the "Start Processing" step, the software will process the videos one by one according to the previously imported file list, applying the same text watermark rules to all records. For the 6 MP4 files shown in the screenshot, one setup can batch generate 6 watermarked videos. Compared to manual, individual editing, this batch processing method significantly reduces repetitive operations and avoids inconsistencies in watermark size, angle, and position across different videos.
Frequently Asked Questions and Notes
1. Which video files can be batch processed? From the example files in the screenshot, MP4 videos were imported this time. The main interface also displays video functions related to formats like AVI, MKV, MOV, FLV, WMV, WebM, MPEG, 3GP, OGV, TS, etc. In actual use, it's recommended to prioritize importing video files supported by the software, and to confirm in the list that the extensions and paths are correct.
2. Is it better to place the text watermark in a corner or tile it? If it's just a lightweight identifier, like a company name, you might consider a lower density or a less conspicuous style; if it's for sample protection or preventing sent videos from being directly used, a tiled watermark is more suitable. The screenshot example uses a combination of "Tile + Normal Density + 45-degree Rotation," resulting in "Original" being visible in multiple areas of the processed frame.
3. Does the watermark text need to be unified in advance? It is recommended to confirm the watermark content beforehand. Because batch processing applies the same text to all videos, a single input error means all output files will need reprocessing. Especially for content like company names, project names, and client names, it's advisable to copy, paste, and double-check.
4. Why is it suggested to keep the original files? Adding a watermark to a video usually generates a new file. If you overwrite the original file directly, it becomes troublesome later if you want to adjust the watermark or output an unwatermarked version. Saving processed files to a new directory is a safer habit for office file management.
5. Will the watermark affect video viewing? The watermark itself overlays the screen, but you can balance visibility and viewing experience through font size, color, opacity, rotation angle, and tiling density. In the example effect, the watermark serves its identifying purpose while the main video subject remains clearly visible.
Summary: Using a batch processing tool to uniformly add text watermarks to videos is more efficient
Batch adding text watermarks to video files is, in essence, a highly repetitive office task. Using traditional editing software for individual operations is not only time-consuming but also prone to inconsistent settings. HeSoft Doc Batch Tool , through its "Add Watermark to Video" function, breaks down the entire process into steps like importing files, setting watermarks, choosing a save location, and starting processing, allowing users to apply the same text watermark rules to multiple videos all at once.
If you are processing a batch of MP4 videos and need to uniformly add "Original," "Sample," "Internal Material," or copyright notices, you can follow the steps in this article: first enter Video Tools and select "Add Watermark to Video," then batch import video files, set the text content, font size, rotation angle, tiling method, and density, and finally choose a save location and start processing. This can significantly reduce repetitive labor, improve the efficiency of batch processing video files, and ensure the output results are unified and standardized.