In many office scenarios, video files only need to retain the audio without continuing to display the visuals. This article introduces a method suitable for batch processing: use HeSoft Doc Batch Tool , select "Remove images from video" in the video tool, import multiple MP4 files at once, uniformly remove the visuals and retain the audio. The article explains the applicable scenarios, effects before and after processing, specific operation steps, and precautions, helping users avoid the inefficient operation of editing videos one by one, making it more suitable for batch file processing tasks such as meeting recordings, course screen recordings, and interview materials.
If you have a batch of MP4 videos and want to uniformly remove all the video frames while keeping the original audio, the most troublesome part is often not the technology itself, but the "large quantity." One video can be processed manually, but a dozen or dozens of videos become repetitive labor: open the file, set processing methods, wait for export, then process the next one. For office staff, data managers, course operators, and content archivists, this work is very time-consuming.
The solution introduced in this article uses the HeSoft Doc Batch Tool shown in the screenshot to complete "batch delete the image frames in videos, keeping only the audio." This is an office software designed for batch document and file processing. Its core value lies in standardizing and batching repetitive file operation workflows. For the requirement of uniformly removing frames and retaining audio from multiple videos, users don't need to enter editing software one by one but can complete it in a single batch task.
Applicable Scenarios: Why Remove Video Frames and Keep Only Audio
In many cases, the frames in a video file are not content that must be retained, and may even need to be hidden or removed. Keeping the audio and deleting the frames is common in the following office and data processing scenarios.
- Internal Meeting Data Organization: Meeting recordings may contain screen shares, participant avatars, chat windows, or internal company information. To reduce the risk of frame dissemination, you can keep only the meeting audio.
- Converting Training Videos to Listening Materials: When there is a large number of training course or lecture videos, and you only need to listen to the explanation content later, removing the frames still allows them to be used as listening materials.
- Material Desensitization: Shot videos contain faces, scenes, brand logos, or other sensitive information, but the audio content still holds value.
- Batch Generating Black-Screen Audio Videos: Some platforms or internal systems still require uploading files in video format, but only audio playback is actually needed. In this case, the video container can be retained, with the display showing a black screen.
- Reducing Repetitive Editing Work: When multiple videos need the same frame removal operation, using a batch processing tool avoids repeated opening and exporting.
It should be noted that the method in this article is not converting videos to MP3, nor is it extracting audio files separately, but rather making the video file delete the original image frames so only audio is heard during playback. For scenarios where the MP4 video file format still needs to be preserved, this approach is more direct.
Effect Preview: Differences Before and After Processing
To avoid misunderstandings before operation, let's first look at the actual effects through screenshots taken before and after processing. This way, when checking results later, you can also judge more clearly whether the processing was successful.
Before Processing: Video Thumbnails and Player Both Show Frames
Before processing, multiple video thumbnails can be seen in the folder, each MP4 file displaying different frame content. After selecting one video, dynamic images can also be viewed normally in the player. For example, in the screenshot, the selected Video test 22.mp4 shows a golden fragment scene in the player.
This indicates that the video before processing contains both an image track and an audio track. If these frames are unsuitable for continued retention, or if only audio is needed later, uniform processing can be done using the batch delete image method.
After Processing: Thumbnails Turn Black, Playback Keeps Only Audio
After processing, the thumbnails of the multiple videos in the folder all turn black. When opening a video for playback, the display area of the player is also a black screen, but you can see the progress bar is still playing. This state indicates that the original frames are no longer displayed, the video can still play, and the audio content has been preserved.
If your goal is "cannot see the video frames, but can still hear the original audio," then this processing result meets expectations. For scenarios like batch video desensitization, meeting data archiving, and converting courses to audio, this effect is very practical.
Operation Steps: Batch Deleting Video Images and Keeping Audio
The following explanation follows the order shown in the software interface screenshots. The entire process is based on "Select Function—Import Files—Confirm Records—Continue Processing" and is suitable for first-time users of this function.
Step 1: Enter the Video Tool Category of HeSoft Doc Batch Tool
After opening HeSoft Doc Batch Tool , first observe the function categories on the left side. The screenshot shows that the left side contains multiple office file processing entries, such as File Name, Folder Name, File Organizing, Word Tools, Excel Tools, PowerPoint Tools, PDF Tools, Text Tools, Image Tools, Video Tools, Audio Tools, etc.
Since video files need to be processed this time, click "Video Tools" on the left. After entering, the main area will display video-related batch processing functions. This categorization aligns with the office software usage habit: first locate the tool by file type, then select the specific processing action.
Step 2: Select "Delete Image from Video"
On the video tools page, you can see multiple card-style functions. Related to the requirement of this article is the 3rd item: "Delete Image from Video". The description below this function reads "Batch delete image frames from videos, keeping only the audio," corresponding to the need for "video removed frames retains audio."
Please be careful not to select the wrong function. The page also has "Delete Audio from Video," which removes sound and keeps frames; and "Separate Video and Audio Frames" which leans more towards splitting the audio and video apart for processing. What this article aims to achieve is keeping the audio, so you should select "Delete Image from Video."
After clicking this function card, you will enter the batch processing page for this function.
Step 3: Add MP4 Video Files to Be Processed
After entering the "Delete Image from Video" page, the top of the interface provides entries for importing files, including "Add Files" and "Import Files from Folder". These two entries can be chosen based on the file organization situation:
- If videos are scattered in different locations, you can click "Add Files" and select multiple files as needed.
- If all videos are already placed in the same folder, you can click "Import Files from Folder" to import videos from the folder at once.
Before batch processing, it is recommended to first gather the videos needing processing into a dedicated folder, such as "Videos to Remove Frames." This makes it more convenient when using "Import Files from Folder" and also reduces the probability of omissions or incorrect selections.
From the screenshot, you can see that 6 video files have been imported, all with the mp4 extension. The list shows information such as file name, path, extension, creation time, and modification time. The summary at the bottom displays "Record count: 6," indicating that these 6 videos will all enter the subsequent batch processing workflow.
Step 4: Verify the File List and Exclude Unnecessary Videos
The advantage of batch processing is handling multiple files at once, but precisely because of this, confirmation before processing is very important. After importing files, it's recommended to focus on checking the following items:
- Name: Confirm that the file names belong to the scope intended for this processing.
- Path: Confirm that the file source is the target folder to avoid importing videos from other projects.
- Extension: The screenshot shows mp4, indicating the imported files are MP4 videos.
- Record Count: The record count at the bottom should match the number of files actually prepared for processing.
- Action Column: If a certain file does not need processing, it can be removed from the list using the delete icon in the right-side action column.
The purpose of this step is not to increase operational burden, but to avoid batch mis-processing. Especially for important files like meeting recordings, client materials, and course content, confirming the list before processing can reduce the need for rework.
Step 5: Click "Next Step" to Enter Save Location Settings
After confirming the processing records are correct, click "Next Step" at the bottom of the page. From the interface flow, you can see the software divides the task into three stages: Step 1 "Select records to process", Step 2 "Set save location", and Step 3 "Start Processing". This workflow is suitable for batch file processing because it gives users the opportunity to check and set the output location.
During the save location setting stage, it is recommended to choose an independent output directory, not mixed with the original videos. For example, you can create folders like "Frame Deleted", "Black Screen Audio Kept", "Processed Videos", etc. This way, after processing is complete, you can quickly distinguish between original files and result files, making subsequent spot checks easier.
Since the provided screenshots do not show the detailed button names on the save location page, during actual operation, simply follow the prompts on the current software page to complete the save path selection. The key points are ensuring the output location is clear, disk space is sufficient, and important original data is not overwritten.
Step 6: Start Processing and Check Output Results
After setting the save location, proceed to the "Start Processing" stage. The software will batch delete video image frames according to the records in the list and generate the processed files. Processing time typically depends on the number of videos, video duration, file size, and computer performance.
After processing is complete, open the output folder to check the results. Focus on checking the following:
- Whether the number of output files matches the number of imported records;
- Whether the files can be opened normally;
- Whether the display has become a black screen or has no image during playback;
- Whether the audio can still be heard normally;
- Whether the file names are easy to identify and for subsequent archiving.
If processing a large number of videos, you don't necessarily need to play each one completely, but it is recommended to at least spot-check a few from different sources or durations to ensure the processing rules meet expectations.
Common Questions and Notes
1. What is the difference between "Delete Image from Video" and "Convert Video to MP3"?
Deleting the image from a video makes the video stop displaying its original frames, but the file can still be played as a video, with audio retained. Converting to MP3 generates a pure audio file; the file format and usage are different. If your system or workflow still requires the use of MP4 video files, you can choose to delete the image; if only an audio file is needed, then you should choose audio conversion or extraction type functions.
2. Why are the video thumbnails black after processing?
Because the original video image frames have been deleted or are no longer displayed, the file thumbnails turn black. In the post-processing effect image, multiple video thumbnails display as black screens, which is a normal phenomenon consistent with the goal of "keeping only the audio."
3. Can many videos be processed at once?
From the operation interface, you can see that the software supports adding multiple files and also supports importing files from a folder, which is the core value of batch processing. The actual processing quantity can be arranged based on computer performance, video size, and task requirements. For very large tasks, it is recommended to process in batches for easier result checking.
4. Do I need to organize folders before processing?
It is recommended to organize them. Putting the videos needing processing into the same folder reduces confusion when selecting files and also facilitates the subsequent use of "Import Files from Folder." If video file sources are complex, you can group them by project or date first to avoid mixing files from different tasks.
5. How to avoid mistakenly processing original videos?
It is recommended to keep a backup of the original files and save the output results to a new folder. While batch processing is efficient, traceability should also be maintained. For important materials, you can first select 1 or 2 videos for testing. Once you confirm the black-screen audio effect is correct, then batch process all files.
6. Why is this considered an office efficiency tool rather than a traditional editing workflow?
Traditional video editing emphasizes detailed editing of individual materials, whereas the need here is to perform a uniform action on multiple files. HeSoft Doc Batch Tool , as office software, is more suitable for such standardized, repetitive file processing tasks. Users are concerned not with complex editing effects, but with quickly and stably completing the same operation on a large number of files.
Summary: Uniformly Removing Frames from Multiple Videos, Batch Processing Saves More Time
Uniformly removing frames from multiple videos and keeping the audio is a typical batch file processing requirement. Using HeSoft Doc Batch Tool , you can select "Delete Image from Video" in the Video Tools, import multiple MP4 videos at once via "Add Files" or "Import Files from Folder," then follow the process to complete save location setting and start processing. After processing, the files no longer display the original frames during playback, but the audio is still retained.
Compared to opening video editing software one by one, this method is more suitable for meeting data organization, course recording archiving, interview material desensitization, and batch black-screen audio processing in office scenarios. It reduces the time cost of repetitive clicking, repeated exporting, and manual checking, allowing users to focus their energy on data management and result verification.
If you are facing a batch of video files that need to hide frames but retain audio, it is recommended to first gather the MP4 files to be processed into a single folder, then follow the steps in this article to use the "Delete Image from Video" function for batch processing. Test on a small scale first, then execute in batch, which can significantly improve processing efficiency while ensuring result safety.