Many meeting recordings, course screen recordings, and material videos only require the audio content, with no need for the visual footage. If you open each video individually for processing, it can become very time-consuming when there are many files. This article uses HeSoft Doc Batch Tool as an example to demonstrate how to use the video tools in office software to batch delete the image frames from multiple video files, keeping only the sound. The article includes a comparison of the effects before and after processing, specific steps, and important notes, making it suitable for office scenarios that require batch processing of MP4 videos and reducing repetitive labor.
In daily office work, we often encounter this need: having a batch of video files, such as meeting recordings, interview videos, classroom screen captures, event footage, surveillance clips, or self-media materials, but only the audio content is needed afterward, without the desire to keep the visual part. The traditional approach usually involves opening video editing software one by one, importing the file, disabling the video track, exporting, and then moving on to the next file. This is acceptable when the number of videos is small, but with dozens or even hundreds of MP4 files, this repetitive operation becomes a huge waste of time.
The problem this article aims to solve is clear: how to batch-remove the video track from many video files, keeping only the audio. The tool used here is the office software shown in the screenshot, " HeSoft Doc Batch Tool ". Its positioning is not as complex video editing software, but rather a batch file processing tool for office scenarios. Its core value is to centralize repetitive file processing actions, allowing for single import and unified processing of multiple files, thereby reducing manual operations.
The following will explain the effects before and after processing with screenshots, and according to the actual workflow of the software interface, clarify how to enter the "Delete image from video" function, how to add multiple video files, and how to proceed to the next step. Even if you are not familiar with video editing, you can follow the steps to complete the batch operation of removing video and keeping audio.
Applicable Scenarios: When is it suitable to batch-delete video image and keep only audio?
"Delete image from video and keep only audio" is suitable for many office scenarios where visual display is unnecessary and only audio information is needed. For instance, during the collation of meeting minutes, the video image does not aid in subsequent dictation and archiving, so keeping only the spoken audio is sufficient; when reviewing online courses, users might only need the teacher's explanation audio and no longer require the screen capture; for archiving interview materials, to protect the interviewee's likeness or on-site environmental information, the image can be removed, keeping only the audio; if event video materials are only used as background sound, commentary, or interview audio, the video can also be batch-deleted first.
Furthermore, the value of batch processing becomes more apparent when there is a large number of video files. Suppose there are dozens of .mp4 videos in a folder. If processed individually, one would not only have to repeatedly add files, set parameters, and export but could also easily miss processing or select the wrong file. Using HeSoft Doc Batch Tool , you can import multiple videos from a folder at once, view file names, paths, extensions, and record counts in a unified list, and then proceed with subsequent processing, making the workflow more suitable for office staff and data managers.
It is important to note that this article discusses "deleting the image from a video, keeping only the audio," not converting the video to pure audio formats like MP3, AAC, or OGG. Judging from the screenshot results, the processed file is still presented as an MP4 file, but upon playback, the image area becomes a black screen while the audio is preserved. This approach is suitable for situations where one still wants to retain the video file container but does not wish to display the original image.
Effect Preview: Before processing, the video has an image; after processing, the image turns black, keeping only the audio
First, look at the effect before processing. From the screenshot, you can see multiple video files in the folder, such as Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, Video test 30.mp4, Video test 32.mp4, Video test 33.mp4, etc. Each video thumbnail displays different image content, like golden confetti, an animal, a sunset with birds, a swan, a building, and a coastline. When one of the videos is opened in the player below, the video image is also visible normally.
This indicates that the video before processing contains not only audio but also visible image frames. If these images involve privacy, people, locations, commercial materials, or are completely unnecessary for subsequent use, they can be processed uniformly by batch-removing the video.
Now, look at the effect after processing. In the screenshot, these same MP4 video files are present, but the thumbnails have turned into black images. When opened for playback, the player area is also a black screen, but playback controls like the playback progress, timeline, and volume are still displayed at the bottom, indicating that the file can still be played; only the image has been deleted or made invisible, and what is mainly retained is the audio content.
From an office usage perspective, this processing result is very intuitive: before processing, the original video image can be seen; after processing, opening the video does not show the original image, and it can only be used as audio material. This is quite practical for scenarios like batch-organizing audio materials, protecting image privacy, and reducing unnecessary visual information.
Operation Steps: Using HeSoft Doc Batch Tool to Batch-Delete Video Images
The explanation below follows the operational sequence in the screenshots. Since the software interface already categorizes functions by tool type, we only need to first enter the Video Tools section, choose the corresponding function, and then import the video files to be processed.
- Open the software and enter Video Tools. After launching " HeSoft Doc Batch Tool ", you can see categories on the left side, such as 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. As this article processes video files, first select "Video Tools" on the left. After selection, the right side will display batch processing functions related to video.
- Select the "Delete image from video" function. On the Video Tools page, you can see multiple video processing functions, such as "Separate video image & audio", "Delete audio from video", "Delete image from video", "Add watermark to video", "Convert video to MP4", "Convert video to AVI", etc. The goal of this article is to delete the video image and keep the audio, so the third option, "Delete image from video", should be selected. In the screenshot, this function card is highlighted with a red box, indicating it is the function needed for this operation.
- Add files after entering the function page. After opening the "Delete image from video" function, the page title will display the current function name. At the top of the interface are two buttons: "Add File" and "Import Files from Folder". If you are only processing a few specific videos, you can click "Add File" and manually select multiple files; if the videos are all in the same folder, it is more recommended to use "Import Files from Folder", which allows you to import all videos from the folder into the pending list at once, reducing repetitive selections.
- Check the list of files to be processed. After the files are imported, the list will display information such as serial number, name, path, extension, creation time, modification time, and actions. The screenshot shows 6 imported records, all with the extension .mp4, with names including Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, etc. The purpose of checking the list is to confirm that all videos needing processing are in the task and to avoid mistakenly adding files that do not need to be processed. If an item is found to be unnecessary, it can be removed using the delete icon to the right of that row.
- Use filtering or sorting to assist in verification if necessary. In the upper right corner of the list, you can see "Filter" and "Sort" buttons. For a large number of files, you can use these entries to assist in finding and checking files. For example, check by name or time order to ensure the files are complete and avoid omissions. No complex settings are needed here; just confirm that the videos in the list are the ones you want to batch-remove images from.
- Click "Next" to enter the save location settings. There is a prominent "Next" button at the bottom of the interface. The current step is "Select the records to be processed", and the next stage shown in the interface flow is "Set save location". After clicking "Next", set the save location for the processed files according to the page prompts. It is recommended not to overwrite the original files but to save them to a new output folder, so as to keep the original videos as backups for subsequent checking.
- Continue following the workflow to start processing. The interface flow also shows the third step, "Start processing". After completing the save location settings, continue to the start processing step to let the software batch-execute the task of deleting video images. As this is a batch processing tool, multiple videos in the imported list will be processed uniformly by the task, without requiring you to open and edit each video individually.
- Spot-check the playback effect after processing is complete. After processing ends, open the videos in the output folder for inspection. The expected result is: the previously visible image frames are no longer displayed, the player shows a black screen or no-image state, but the playback progress and audio still exist. You can spot-check 2 to 3 files to confirm the audio content is complete before archiving, sending, or further use.
Frequently Asked Questions and Notes
1. Why are the processed files still MP4? As seen in the effect screenshots, the processed files are still displayed as MP4 video files, only with the image turned to a black screen. This indicates that the function's focus is to delete the image from the video and keep the audio, not to convert the file to MP3. If your requirement is to obtain a pure audio file, you need to select the corresponding audio extraction or format conversion function in the software, not the "Delete image from video" function discussed in this article.
2. Should I back up the original videos before batch processing? Backing up is recommended. Although batch processing can greatly improve efficiency, video files are often large and come from various sources. Once a wrong selection is made or the output overwrites the original file, recovery can be troublesome. A safer approach is to place the original videos in one folder, save the processing results to another folder, and only decide whether to delete the original files after confirming there are no errors.
3. Can many videos be processed at once? The software interface supports importing multiple records through "Add File" and "Import Files from Folder", and the screenshot already shows 6 MP4 files entering the list simultaneously. Therefore, processing multiple videos is the typical use case for this function. In practice, it is recommended to process in batches by project, date, or folder to facilitate result verification.
4. What should I pay attention to regarding file names and paths? After importing, please focus on checking the "Name" and "Path" columns. Many office folders may contain videos with the same or similar names, such as test 22, test 23, test 24, etc. Confirming the path before batch operation can reduce the risk of miss-processing. After processing, it is also recommended to save the results using the same naming convention for easier comparison.
5. Will deleting the image affect the audio? The function's description is "batch-delete image from video, keep only audio", and the normal expectation is that the audio content is retained. However, different video codecs, sources, and formats may have variations, so after processing, it's best to spot-check playback to confirm that the audio duration and content meet expectations.
Summary: Replacing Individual Video Editing with Batch Processing
Batch-deleting video image and keeping only audio is essentially a typical repetitive file processing task. Using traditional video editing software to operate on each file individually is not only time-consuming but also error-prone. HeSoft Doc Batch Tool , as office software, makes this type of task a clear batch workflow: enter Video Tools, select "Delete image from video", add files or import from a folder, check the list, set the save location, and then start processing.
For scenarios like meetings, courses, interviews, and material archiving, this method can significantly reduce repetitive labor. It is recommended that before formally processing a large number of files, you first test the effect with a small number of videos; after confirming the result is indeed a black screen with normal audio, then batch-import the complete folder to execute the task. This ensures reliable processing results while fully leveraging the efficiency advantage of the office software for batch file processing.