This article introduces how to use HeSoft Doc Batch Tool to batch-separate multiple MP4 videos into silent video and audio files. It is suitable for scenarios like course editing, material archiving, dubbing extraction, and audio reuse. The article combines before-and-after effect images and software operation screenshots, explaining the process of selecting video tools, importing files, setting audio formats, and saving and starting processing, helping users reduce repetitive operations and improve video file organization efficiency.
In daily office work, training production, short video editing, and data organization, you often encounter this problem: there are dozens or even hundreds of MP4 videos in a folder, and you want to keep the visuals for later editing while also extracting the audio separately for transcription, dubbing reference, or audio archiving. If you open video software one by one to export audio, not only are the steps repetitive, but it's also easy to miss processing, have chaotic naming, and be inconvenient for later searching.
This article aims to solve the problem of "batch separating video and audio from many video files." Through the office software feature HeSoft Doc Batch Tool , you can add multiple video files to a task at once, set the audio format according to the wizard, and then batch output the corresponding silent video and audio files. Its core value is not complex editing, but rather addressing file batch processing scenarios, helping users reduce repetitive work and improve the efficiency of organizing video materials in batches.
Applicable Scenarios: When do you need to batch separate video and audio?
Batch video-audio separation is suitable for many office and content production scenarios. For example, a training department needs to extract the narration audio from screen-recording courses and send it to a text transcription tool to generate lecture notes; a new media team needs to extract ambient sound, interview audio, or background music from a batch of source videos, while keeping the silent visuals for secondary editing; archive personnel need to save video materials separately as "video files" and "audio files" for easier subsequent retrieval and reuse.
If there are only one or two videos, manual processing might be acceptable; but when the number of files increases to dozens, the process of repeatedly opening, choosing export, setting format, and saving filenames will take up a lot of time. What's more troublesome is that different videos might be scattered in folders, and manual processing can easily lead to omissions. Using a batch processing tool allows you to first import the MP4 files that need processing into a list uniformly, then execute the batch task according to a single rule, resulting in a more organized output.
From the screenshot, you can see that this example processes multiple MP4 video files, with filenames including Video test 18.mp4, Video test 19.mp4, Video test 22.mp4, etc. The goal is to batch separate these videos to obtain the corresponding audio file for each video, along with the separated silent video file.
Result Preview: Before processing, a batch of MP4 videos; After processing, result folders are generated per video
Before processing, the folder contains multiple independent MP4 video files. Each file has its own visual content and audio content; if users want to obtain the audio separately, they need to process them one by one. The screenshot below shows the state before processing: multiple MP4 videos are placed together in the same location, with filenames starting with Video test.
After batch processing is complete, the result is no longer just the original batch of video files; instead, corresponding result folders are generated for each video. In the example, you can see folders like Video test 18, Video test 19, Video test 22; opening the Video test 19 folder reveals it contains Video test 19.mp3 and Video test 19.mp4. Based on the software feature name "Separate video image and audio" and the interface prompts, the MP3 here is the audio file separated from the video, and the MP4 is the silent video file after separation.
The advantage of this output method is very intuitive: each original video corresponds to one result folder, with the audio and silent video kept together, reducing the chance of confusion. For those who need batch archiving, batch delivery of materials, or subsequent editing, this is easier to manage than mixing all files in one directory.
Operation Step 1: Open the video tool and select "Separate video image and audio"
After opening HeSoft Doc Batch Tool , select Video Tool in the left sidebar. The main area of the software will display batch processing features related to video, such as removing audio from video, removing image from video, adding watermark to video, converting video to MP4, AVI, MKV, MOV, FLV, etc. Here, our goal is to simultaneously obtain the separated video and audio results, so select the first option: Separate video image and audio.
The purpose of this step is to enter the correct batch processing task module. Many users easily confuse "remove audio" with "separate audio" when processing videos: removing audio usually only retains the silent video, while separating video and audio outputs two results—a silent video file and an audio file. The description for the first option in the screenshot is "Batch separate video files into silent video and audio files," which perfectly matches the goal of this article.
After selecting this function, the software enters a step-by-step wizard interface. The top of the wizard displays the processing flow, including selecting records to process, setting processing options, setting the save location, and starting the process. Following this sequence can prevent missing key settings.
Operation Step 2: Add video files or import files from a folder
After entering the "Separate video image and audio" interface, you first arrive at Step 1 "Select records to process." At the top right of the interface, you can see two entry points: Add File and Import Files from Folder, alongside Clear and More buttons.
If the number of videos to process is small or they are scattered in different locations, you can use "Add File" to select multiple MP4 files to add to the list as needed. If all videos are already organized in the same folder, using "Import Files from Folder" is more convenient; the software will import the videos from the folder into the pending processing list.
From the screenshot, you can see that 6 records have been successfully imported in the example, all with the .mp4 file extension. The list displays information such as sequence number, name, path, extension, creation time, modification time, and actions. Users can verify whether the files are imported correctly through these fields. If a video doesn't need processing, you can use the delete icon on the right side of the list to remove it; if you need to reselect files, you can use "Clear" and then re-import.
The expected result of this step is: all videos that need batch audio-video separation appear in the task list, and the file count matches the user's expectation. After confirming correctness, click Next at the bottom to proceed to processing option settings.
Operation Step 3: Set the audio format to determine the type of the output audio file
The second step is "Set processing options." In the current screenshot, the software provides audio format options, including mp3, aac, opus, ogg. The default selection in the example is mp3.
This setting affects the format of the separated audio files. For most office scenarios, mp3 is a relatively universal choice with strong compatibility, suitable for playback, transcription, sharing, and archiving. If the subsequent workflow requires aac, opus, or ogg, you can select the corresponding format as needed. It's important to note that the current interface shows audio format settings, not video format conversion settings; it determines the file extension of the separated audio files.
In the effect diagram after the example processing, the Video test 19 folder generated Video test 19.mp3, indicating that after selecting mp3 in this task, the software generated the corresponding MP3 audio file based on the video name. For users who need to batch extract audio from videos, this automatic naming method reduces the workload of manual renaming and maintains the correspondence between the audio and the original video.
After completing the audio format selection, click Next at the bottom. According to the interface wizard, the subsequent steps will enter "Set save location" and "Start processing." Although the screenshots do not show the detailed specifics of the save location and start processing pages, it can be reasonably inferred from the wizard text that the user needs to continue following the software prompts to select the result save location and initiate the batch process in the final step.
Operation Step 4: Set the save location and start batch processing
In Step 3 "Set save location," it is recommended to choose an easily identifiable output directory, such as creating a new folder named "Separation Results" or "Audio-Video Separation Output" on the desktop or within a project folder. The purpose of this is to prevent the processed silent video and audio files from mixing with the original MP4 files, facilitating later checking and delivery.
After setting the save location, proceed to Step 4 "Start processing." At this point, the software will execute the separation task in batches based on the previously imported video list and the selected audio format. For the 6 MP4 files in the example, the user doesn't need to open videos one by one or export audio individually; they just need to wait for the batch task to complete.
Once processing is finished, you can go to the output directory to view the results. Combined with the result preview image, the software generates corresponding folders named after the original videos; for instance, the Video test 19 folder contains Video test 19.mp3 and Video test 19.mp4. Users can play the audio file to listen, or open the MP4 file to confirm if the video file meets expectations.
Common Issues and Notes
1. Is the separated video file the original video?
According to the feature description, this tool separates the video into a silent video and an audio file. Therefore, the output MP4 should be understood as the separated video file, i.e., a silent video; the audio is saved separately in the selected format.
2. Why is mp3 recommended?
mp3 has good compatibility and can be used directly by common players, transcription software, and office collaboration scenarios. If there are no special encoding requirements, choosing mp3 lowers the barrier for subsequent use.
3. Can I import an entire folder at once?
From the operation interface, you can see the "Import Files from Folder" button, suitable for batch importing video files from the same directory. When processing a large number of MP4 files, this is more efficient than adding them one by one.
4. Should I check the list after importing?
It is recommended to check. The list displays names, paths, and extensions, allowing users to confirm that all are the videos intended for processing and avoid adding irrelevant files to the batch task.
5. How to avoid confusion with output files?
It is recommended to select a separate result directory when setting the save location and maintain the default filename correspondence. In the example, the result folders are named after the original video names, ensuring a one-to-one correspondence between audio and silent video files.
Conclusion: Use batch processing to replace repetitive exporting, improving the efficiency of organizing video materials
Batch separating video and audio from MP4 videos is essentially a high-frequency, repetitive, and error-prone file processing task. Using HeSoft Doc Batch Tool , you can add multiple videos to a task list at once, select an audio format, and uniformly output silent video and audio files, reducing the time cost of opening software and exporting files one by one.
If you are organizing course recordings, short video materials, meeting videos, or archival data, you can follow the steps in this article: enter the video tool, select "Separate video image and audio," import files, set the audio format, choose a save location, and start processing. For a large number of video files, this batch processing method significantly improves efficiency and makes the output results more standardized and easier for subsequent use.