When faced with the need to remove visuals from a large number of videos while keeping only the audio, processing them one by one using editing software is very inefficient. This article uses HeSoft Doc Batch Tool as an example to explain how to use the "Remove Video Image" function in the video tool within office software to import multiple mp4 files at once and batch-generate videos with a black screen but retained audio. The article includes applicable scenarios, before-and-after processing comparisons, detailed step-by-step instructions, and precautions, making it suitable for batch file processing scenarios such as meeting recordings, training courses, interview materials, and privacy desensitization.
Many people have encountered this situation: a folder contains a batch of videos where the visual content is no longer needed, but the audio still has value. For example, a set of meeting recordings where you only want to listen to the discussion later; a batch of training videos where students only need the audio for review; some interview footage where the images contain personal or environmental information that is inconvenient to continue disseminating. If you import each file into editing software one by one, manually add a black screen, and then export, repeating this process for every file, handling dozens of videos can be very time-consuming.
A more efficient approach is to use batch processing software designed for office scenarios. The HeSoft Doc Batch Tool introduced in this article not only handles document files but also provides modules in its left-side categories like Video Tools, Audio Tools, Image Tools, PDF Tools, Word Tools, and Excel Tools. For repetitive tasks like batch removing images from videos and keeping only the audio, it allows you to put multiple files into a single task list for unified processing, reducing manual operations.
Applicable Scenarios: Why Process Videos to Keep Only the Audio
Batch removing the image from multiple videos with one click is not about making the files unplayable, but rather ensuring the original visuals are no longer displayed during playback while preserving the audio. The post-processing effect typically manifests as a black screen playing back, but with audio still present. This is very practical in the following scenarios.
Organizing Meetings and Interviews: The value of meeting recordings and interview videos often lies in the audio content, such as discussion processes, key points, and Q&A records. Removing the visuals makes the files more suitable as dictation, review, and archiving materials.
Converting Training Courses to Audio: Some course videos have minimal visual changes, with the lecturer’s explanation being the main content. After batch retaining the audio, users can review the course just like listening to a podcast, without needing to focus on the screen.
Handling Privacy and Sensitive Information: Video images may contain faces, addresses, screen content, file names, customer information, etc. Removing the video image can reduce the risk of visual information leakage to a certain extent, preserving only the usable audio content.
Initial Material Cleanup: Media, administrative, and teaching teams often need to organize large amounts of footage. Batch removing visuals first can turn videos into materials more suitable for audition review and text transcription.
Maintaining the Video File Format: In some scenarios, you might still want the file kept in a video format like mp4, rather than converting it directly to mp3. In such cases, removing the image while keeping the audio is more suitable than a simple audio conversion.
Pre-processing Effect: Video Thumbnails and Players Show the Original Visuals
From the pre-processing screenshot, you can see there are multiple video files in the folder, and each file's thumbnail shows a different image. For example, Video test 22.mp4 shows a golden shard scene, Video test 23.mp4 shows an animal scene, Video test 24.mp4 shows birds at sunset, and other videos also have visible images. Opening one of these videos also displays the original visuals in the player.
For these types of videos, the image information remains intact before processing. If you need to share them with people who don’t need to see the visuals, or if the images contain information unsuitable for public disclosure, image removal processing is necessary. Manually processing one video might be acceptable, but with a large number of files, you must rely on a batch processing workflow to improve efficiency.
Post-processing Effect: Thumbnails Turn Black, Focus on Audio During Playback
The post-processing screenshot shows that the thumbnails for multiple videos have all turned black. When you open a processed video, the player window no longer displays the original visuals, showing a black screen instead; the progress bar is still moving, and the volume controls are still usable, indicating that the video file remains playable. This outcome aligns with the goal of deleting the image visuals from the video and keeping only the audio.
Note that while the visual presentation of the processed files changes, the user’s required audio content is preserved. Therefore, they can still be opened with common players and used for office workflows such as audition review, organizing meeting minutes, or preparing materials for speech-to-text transcription.
Step One: Locate the Video Tool in HeSoft Doc Batch Tool
First, open HeSoft Doc Batch Tool . The product name is displayed in the top-left corner of the software interface, which is positioned as a document and file batch processing tool. The left side contains a functional category navigation, including Home, Task Flow, All Tools, File Name, Folder Name, File Organizer, Word Tools, Excel Tools, PowerPoint Tools, PDF Tools, Text Tools, Image Tools, Video Tools, Audio Tools, More Tools, and so on.
The current processing objects are video files, so click on Video Tools on the left. After entering, the central area will display multiple batch functions related to videos. As seen in the screenshot, "Remove Image from Video" is the third item, described as "Batch remove the image visuals from videos, keeping only the audio." This description is highly consistent with the requirement, so select this function.
Pay special attention to the difference in function names here. "Remove Sound from Video" removes audio, suitable for muting videos; "Separate Video's Image and Sound" splits the content; converting videos to MP4, AVI, MKV, MOV, FLV, WebM, MPEG, 3GP, OGV, TS, etc., are format conversions. This article aims to achieve a black screen video with retained audio, so you should click "Remove Image from Video."
Step Two: Import the Video Files for Batch Processing
After entering the "Remove Image from Video" page, the interface top shows two main import options: "Add Files" and "Import Files from Folder." They suit different office situations.
Add Files: Suitable for selecting several videos from different locations. For example, if you only need to process a few mp4 files, you can click "Add Files" to put them into the task list.
Import Files from Folder: Suitable for processing a large number of videos within a project folder. If all meeting recordings are stored in the same directory, clicking this button allows for batch import, avoiding selecting them one by one.
After the import is complete, the videos will appear in the list. The screenshot shows a list with columns for serial number, name, path, extension, creation time, modification time, and actions. The example imports a total of 6 mp4 files, and the bottom shows the record count as 6. The file names are Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, Video test 30.mp4, Video test 32.mp4, and Video test 33.mp4. Through this information, users can confirm which files this task will process.
If you find files in the list that don’t need processing, you can click the delete icon in the corresponding row's "Actions" column to remove them. If the entire import is incorrect, you can use the "Clear" button to start over. For tasks with a very large number of files, you can also use the filtering and sorting functions on the interface to assist with verification.
Step Three: Confirm the Records and Click Next
The advantage of batch processing is handling multiple files at once, but it also means you must carefully verify before execution. It is recommended to check at least three items before clicking "Next."
First, confirm the number of files. The record count at the bottom should match the number of videos you plan to process. For instance, the screenshot shows a record count of 6, meaning 6 files will be processed this time. If you were expecting 20 but the list shows only 18, you need to check if some files were not imported.
Second, confirm the file paths. The Path column reveals the directory where the files are located. In the example, the path is the "Test folder 4" folder on the desktop. If this path is not the directory you prepared for processing, you should adjust accordingly.
Third, confirm the extensions. The extensions in the screenshot are mp4. Although the video tool can handle multiple formats, in actual operation, you should still confirm the file type is correct after importing to avoid adding irrelevant files to the task.
Once you've confirmed everything is correct, click the "Next" button at the bottom of the page. The interface flow bar indicates there are subsequent stages: setting the save location and starting the processing. This wizard-style flow helps users complete batch tasks in order, preventing key steps from being missed.
Step Four: Set the Output Location and Execute the Batch Visual Removal
After clicking "Next," follow the on-screen prompts to enter the stage for setting the save location. It's recommended here to choose a dedicated output folder, for instance, creating a new folder named "Processed" or "Audio-Only Videos" next to the original one. This allows you to manage the original and processed videos separately, facilitating comparison and rollback.
After setting the save location, proceed to the final "Start Processing" stage. The software will execute the image removal operation on all videos in the task list. Since this is a batch task, users don't need to open videos individually or repeat settings for each file. Once processing is complete, check the results in the output directory.
When checking, you can randomly open a few processed files to see if the player no longer shows the original visuals, and simultaneously listen to confirm the audio is normal. Considering the post-processing screenshots, a successful result typically shows video thumbnails turning black, a black screen in the playback window, but a working progress bar and present audio.
FAQ: What to Note When Batch Removing Video Visuals
1. Do the files become audio files after processing?
Not necessarily. This article demonstrates removing the image from a video, not converting the video to MP3. After processing, the output files may still be in video formats like mp4, just without displaying the original visuals during playback. If your goal is to get pure audio files like mp3, aac, or ogg, you should choose the corresponding conversion function; if your goal is a black screen video with retained audio, use "Remove Image from Video."
2. Why keep the original files?
While batch processing has undeniable efficiency advantages, caution is still warranted. It is recommended not to mix the output results with the original files, and especially not to overwrite the original files before confirming the result is satisfactory. Keeping the original files prevents mishandling and allows for easy re-exporting of other versions later.
3. How to reduce missed selections when there are many files?
You can first put all the videos to be processed into a single folder, then use "Import Files from Folder." After importing, check the record count, paths, and extensions, using sorting and filtering to assist if necessary. This is more reliable than manually selecting from multiple directories.
4. Can you still hear the audio after removing the visuals?
The function's description is to batch remove the image visuals from videos, keeping only the audio. Therefore, under normal circumstances, the audio should be preserved after processing. After the process is complete, it is recommended to spot-check playback to confirm the audio has no anomalies.
5. What video names or formats are suitable for processing?
Judging from the example, the software list processed mp4 files. In actual office work, many videos are saved with extensions like .mp4, .mov, .avi, .mkv, etc. After importing, the software's identification result and list display should prevail. The file names themselves can be in Chinese, English, or numbered, but it is recommended to keep naming clear before batch processing to facilitate verification.
Tips for Improving Efficiency
To make the process of batch removing video images smoother, some preparations can be done beforehand. First, gather all videos to be processed into a single folder and move away any files not needing processing. Second, create a separate folder for the output results, naming it to reflect the processing purpose, such as "Visuals Removed, Audio Retained." Third, test the effect with a small number of files first, confirming it meets your requirements before batch processing all files. Fourth, after completion, spot-check different files, especially those with longer durations or from different sources, to ensure the audio is retained correctly.
These preparatory steps may seem simple, but they can significantly reduce the probability of rework in batch tasks. The value of office software's batch processing lies not just in speed, but also in standardizing and streamlining repetitive operations.
Summary
Batch removing images from multiple videos with one click and retaining audio is suitable for organizing meeting screen recordings, converting courses to audio, archiving interview materials, and desensitizing private visuals. Through the video tools of HeSoft Doc Batch Tool , users can directly select the "Remove Image from Video" function, then add multiple mp4 videos to the same task list via "Add Files" or "Import Files from Folder."
The entire operation process can be summarized as: enter Video Tools, select "Remove Image from Video," import video files, verify names, paths, extensions, and record count, click "Next," set a save location, and finally start processing. After completion, the video visuals become a black screen or no longer show the original image, while the audio continues to be retained.
If you are dealing with a batch of videos where you don't need the visuals, only the audio, there's no need to open editing software one by one and repeat the export process anymore. First organize the folder to be processed, then follow the steps in this article to use the batch processing function, and you can complete the video image removal task more efficiently.