When you have a large number of MP4 videos and only need to keep the audio, no longer requiring the video track, processing them one by one in video editing software can be very time-consuming. This article uses HeSoft Doc Batch Tool as an example to introduce how to use the video tools in office software to batch delete the image track from multiple video files, keeping only the audio track. The article, combined with before-and-after effect images and interface screenshots, explains applicable scenarios, importing files, confirming the processing list, setting the save location, and processing precautions, helping users efficiently complete batch video file processing.
In daily office work, material organization, course archiving, meeting material processing, or secondary content compilation, a common need arises: you have many video files, but the real value lies in their sound, such as explanatory audio, meeting speeches, classroom recordings, interview content, etc. The visual itself does not need to be preserved. If you open video editing software one by one to delete or black out the video track of each file and then re-export, the process is not only repetitive but also a huge waste of time.
The problem this article aims to solve is: How to batch delete the visual track from many video files, keeping only the sound. The tool used here is HeSoft Doc Batch Tool , shown in the screenshots. It is positioned as an office software, focused not on complex editing, but on batch file processing scenarios, helping users reduce repetitive operations and improve processing efficiency. When you need to uniformly remove visuals and keep sound from a large number of files like MP4s, video materials, or training screen recordings, this type of batch processing tool is more suitable than traditional single-file editing methods.
Applicable Scenarios: When is it appropriate to batch delete video visuals and keep only sound?
"Deleting the image from a video, keeping only the sound" is not purely a video editing need; it more often appears in office document management and batch material processing workflows. The following scenarios are quite common:
- Meeting Video Archiving: After recording a company meeting, the visuals might include participants, screen sharing content, or sensitive information, but the spoken content needs to be preserved. In this case, you can batch remove visuals, keeping only the sound.
- Course Recording Organization: For a large number of course videos, the visuals are no longer needed for display; you only want to keep the instructor's lecture audio for re-listening, archiving, or internal material compilation.
- Interview Material Desensitization: You need to keep the audio content of an interview video but do not want the people, location, or environmental information in the visuals to continue spreading.
- Reducing Visual Disturbance: Some video material is only needed as an audio reference. After removing the visuals, the playback interface is a black screen, allowing the user to focus more on listening to the content.
- Batch Uniform Processing: When dealing with a large number of files, such as dozens or hundreds of MP4 videos, manual one-by-one processing creates significant repetitive labor, making it suitable to use the batch functionality of office software.
It is important to note that the function introduced in this article is "Delete Image from Video." The result is that the visuals turn black or have no visible image during playback, but the sound is still retained. It is suitable for scenarios where files need to be saved as video files but without displaying the original visuals.
Effect Preview: Video has visuals before processing, only sound remains after
Before starting the official operation, you can look at the comparison of the before and after effects to understand the result of this function more easily.
Before Processing: Multiple MP4 videos still have normal visuals
The image below shows the state of the video files before processing. You can see multiple MP4 videos in the folder, such as Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, etc. After selecting one of the videos, the player can display the image normally, indicating that these videos contain complete video visuals and sound content before processing.
If these videos were processed one by one at this point, it would be necessary to open each file individually, then perform operations like removing visuals and exporting. This might be acceptable for a small number of files, but when the number is large, the repetitive operations will significantly slow down work efficiency.
After Processing: Visuals become a black screen, sound is still playable
The image below shows the effect after processing. The thumbnails of multiple video files have all turned black, and playing the video in the player also shows a black screen, but the progress bar plays normally. This indicates the file can still be played, only the original image visuals have been deleted or are no longer displayed, while the audio part has been preserved.
This effect is suitable for office processing scenarios where video visuals need to be hidden and only audio information retained. Unlike simply extracting audio, it preserves the file in a video format, making it easy to continue using within the existing video file management workflow.
Operation Steps: Using HeSoft Doc Batch Tool to Batch Delete Video Visuals
The following explains how to complete batch processing in HeSoft Doc Batch Tool , according to the interface sequence in the screenshots. The overall process can be understood as: entering Video Tools, selecting "Delete Image from Video," importing the video files to be processed, confirming the list, and then proceeding to set the save location and start processing.
Step 1: Open the software and select "Video Tools" on the left
After launching HeSoft Doc Batch Tool , you can see multiple tool categories on the left, such as Word Tools, Excel Tools, PowerPoint Tools, PDF Tools, Image Tools, Video Tools, Audio Tools, etc. Since the task involves processing video files this time, you need to enter the Video Tools category.
In the screenshot, "Video Tools" is selected on the left, indicating that the current page displays batch processing functions related to video files. For office software, clear categorization is very important; users do not need to search through complex menus but can simply enter the corresponding module based on the file type.
Step 2: Select the "Delete Image from Video" function
After entering Video Tools, the page displays several video processing functions, such as "Separate Video and Audio," "Delete Sound from Video," "Delete Image from Video," "Add Watermark to Video," "Convert Video to MP4," etc. Since the goal this time is to keep sound and delete visuals, you should select "Delete Image from Video".
The position marked in red in the screenshot is exactly the 3rd function card, named "Delete Image from Video," with the description text: "Batch delete the image visuals from videos, keeping only the sound." This exactly matches the processing goal of this article. After clicking this function, you will enter the specific batch processing page.
It is recommended not to mistakenly select "Delete Sound from Video." "Delete Sound from Video" removes the audio track and keeps the visuals, which is the opposite of this article's goal; while "Separate Video and Audio" is more geared towards splitting audio and video, not the method of turning the original video into a black screen while retaining the sound.
Step 3: Import the video files to be processed
After entering the "Delete Image from Video" page, you can see two main import entries at the top: "Add Files" and "Import Files from Folder". The uses of these two buttons are slightly different:
- Add Files: Suitable for selecting one or more specified video files from a location.
- Import Files from Folder: Suitable when files are all concentrated in the same folder, and you wish to import all videos within that folder at once.
If you only need to process a few videos, you can use "Add Files"; if you need to process dozens of videos, or if the video files are already placed uniformly in one folder, using "Import Files from Folder" will be more efficient.
As seen in the screenshot, the software has imported 6 MP4 video files, with filenames including Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, Video test 30.mp4, Video test 32.mp4, Video test 33.mp4. The bottom of the list shows "Record Count: 6," indicating that 6 video records will be processed in the current batch.
Step 4: Check the processing list to confirm the files are correct
After importing the files, it is not recommended to immediately proceed to the next step; instead, check the list content first. The list usually displays information like sequence number, name, path, extension, creation time, modification time, and actions. Through this information, you can confirm whether the correct video files have been imported.
In the screenshot, the extension column is shown as mp4, indicating that the currently imported files are MP4 video files. The path column shows the location of each file, making it easy to judge whether they come from the target folder. There is a delete icon in the "Actions" column on the right; if a video is found not to need processing, it can be removed from the processing list through this position.
The purpose of this step is to avoid processing unrelated videos together. Batch processing is highly efficient, but it also means that if a wrong file is selected, it can affect multiple files at once. Therefore, before clicking "Next," it is best to carefully check the filenames, paths, and quantity.
Step 5: Click "Next" to continue setting the save location
After confirming the list is correct, you can click the "Next" button at the bottom of the page. The progress bar in the screenshot shows that the current step is Step 1 "Select records to be processed," followed by Step 2 "Set save location" and Step 3 "Start processing." This shows that the software uses a step-by-step processing flow, allowing the user to confirm files before processing, then set the output location, and finally execute the batch task.
The purpose of setting the save location is to decide where the processed video files will be saved. For batch processing tasks, it is recommended to save the output results to a separate new folder, such as "Videos Without Visuals" or "Audio Only Videos." This has two benefits: it avoids mixing them with the original files and makes it easy to check and archive them after processing.
As the screenshot does not show the specific button names on the save location page, simply follow the software interface prompts during actual operation to complete the save location setting. As long as the output path is easy to identify and there is enough disk space, you can proceed to the subsequent processing.
Step 6: Start batch processing and check the results
After completing the save location setting, follow the software flow to enter "Start processing." After processing is complete, open the output folder and check the generated video files. Under normal circumstances, the processed videos can still be opened and played in a player, but the visuals display as a black screen or have no image, while the sound is still present.
It is recommended to spot-check at least 2 to 3 files to confirm the processing results meet expectations: first, the original video visuals are no longer displayed; second, the playback progress is normal; third, the sound content is not lost; fourth, the number of files matches the count in the import list. If processing a large amount of data, spot-checking can help timely identify issues like wrong path selection or incomplete file import.
Frequently Asked Questions and Notes
1. Is this function for extracting MP3 audio?
No. This article introduces "Delete Image from Video." The processed file is still a video file, only the visuals have been deleted or are displayed as a black screen, while the sound is retained. If your goal is to get a pure audio file like MP3, AAC, or OGG, you should choose a function related to audio extraction or format conversion, not the function in this article.
2. Can the processed video still be played?
As seen from the post-processing effect image, the video can still be opened in a player, and the progress bar runs normally. The difference is that the visual area turns black and no longer displays the original image. As long as the audio track is preserved, the user can continue to hear the sound content in the video.
3. Do I need to back up the original files before batch processing?
Backup is recommended. Although batch processing tools usually allow the user to set a save location, for important meetings, courses, or interview materials, it is still recommended to keep the original files. Especially when using a function for the first time, you can first verify the effect with a small number of test files before processing all files.
4. Why use office software for batch processing instead of video editing software?
Video editing software is suitable for fine editing, such as cropping clips, adjusting subtitles, adding transitions, etc. But when the task is to execute the same action on a large number of files—like "uniformly delete visuals from all videos, keeping only sound"—using batch-processing office software saves more time. Users do not need to import and export files one by one, nor do they need to repeatedly set the same parameters.
5. What should I pay attention to regarding filenames and paths?
Before batch processing, it is recommended to gather the videos to be processed into one folder and try to avoid paths that are too deep or filenames that are overly complex. This not only makes importing more convenient but also makes subsequent result searching clearer. If the number of files is large, you can create folders by project, date, or source for easier archiving.
Summary: Use a batch processing approach to complete repetitive video de-imaging tasks at once
Batch deleting the visuals from video files and keeping only the sound seems like a video processing need, but essentially it is also a typical office efficiency problem. When faced with multiple MP4 videos, processing them one by one with software consumes a lot of time; however, using office software like HeSoft Doc Batch Tool , you can complete the repetitive operations in one batch process through the "Delete Image from Video" function in "Video Tools."
The entire operation is not complicated: first enter Video Tools, select "Delete Image from Video," then batch import videos via "Add Files" or "Import Files from Folder," confirm the list, click "Next," follow the flow to set the save location, and start processing. After processing is complete, the video visuals will no longer be displayed, while the sound content is retained.
If you are organizing meeting recordings, course recordings, interview materials, or other large volumes of video files and only need the sound content, it is recommended to first prepare a test folder, use this function to process a small number of videos to confirm the effect, and then batch process all files. This ensures controllable results and maximizes the efficiency advantages of office software for batch file processing.