When there are a large number of MP4 videos in a folder that need to have their video and audio separated, exporting them one by one using editing software can be very time-consuming. This article describes how to use the video tool in HeSoft Doc Batch Tool to batch-separate multiple videos into silent video files and audio files, with options for audio formats such as mp3, aac, opus, and ogg. The article combines pre-processing and post-processing screenshots with operation steps to explain the complete workflow from selecting the function, importing videos, setting the audio format, to saving the output results. It is suitable for scenarios like organizing course materials, reusing short video assets, and extracting audio from meeting recordings.
In daily office work and content processing, many people encounter the need to separate the video and audio from dozens or even hundreds of MP4 videos in a folder. For example, extracting the audio from training courses for separate use, video teams retaining silent footage for re-dubbing, or generating audio files from meeting recordings for transcription while keeping the original video. If you open editing software for each video, import, separate audio tracks, export, and then move to the next file, the steps are not only repetitive but also prone to missed processing, naming confusion, or saving to the wrong location.
The problem this article aims to solve is: how to batch separate video and audio from many video files. Below, using HeSoft Doc Batch Tool in the screenshot as an example, we demonstrate using the batch processing capabilities of office software to split multiple MP4 videos into silent video files and audio files in one go. This workflow is suitable for users who want to quickly batch process files without manual editing.
Applicable Scenarios: When Do You Need to Batch Split Video and Audio
Batch separating video and audio is not only for professional editors. Many office, teaching, and content organization scenarios require splitting video and audio for separate management.
The first is organizing course and training materials. For example, a training package contains multiple MP4 course videos, and the operator might need to extract the instructor's voice as mp3 for students to listen to during commutes, and for later text transcription and subtitle verification. If there are many videos, batch audio extraction is much more efficient than exporting one by one.
The second is repurposing short video material. Material libraries often contain large amounts of scenery, portrait, and product showcase videos. Some projects only need the footage without the original sound; others only need the background music or dialogue without the picture. By batch separating video and audio, you can quickly obtain silent videos and separate audio tracks, then import them into editing software for secondary creation.
The third is archiving meetings, interviews, and lectures. Companies often save meeting recordings, interview videos, or live replays. To search the content, audio files are usually needed for transcription; for archiving, the video footage needs to be kept. After batch splitting, each video corresponds to an audio file and a video file, making the organization structure clearer.
The fourth is batch file standardization. Sometimes you need to uniformly convert the audio in videos to mp3, aac, opus, or ogg for different system calls. As seen in the screenshots, the software offers audio format options in the processing settings, suitable for choosing the output format based on subsequent use.
Result Preview: Before Processing, Multiple MP4s; After Processing, Each Video Generates Independent Output
First, look at the file state before processing. In the screenshot, there are multiple video files in the same folder, such as Video test 18.mp4, Video test 19.mp4, Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, Video test 30.mp4. These files are the video materials to be processed, and the user's goal is to separate their video and audio all at once, rather than processing them individually.
The processed results can be seen in the screenshot: each original video generates a corresponding folder, for example, Video test 19. After opening this folder, you can see the audio file with the same name, Video test 19.mp3, and the video file, Video test 19.mp4. Based on the function name "Separate Video Picture and Sound" and the interface description, the mp3 here is the sound file separated from the original video, and the mp4 is the silent video file retaining the picture. This output structure is very suitable for batch archiving because each original video corresponds to a result folder, making it hard to mix up audio and video from different videos.
Comparing before and after processing shows that the core value of batch processing lies in reducing repetitive operations: originally, 6 videos needed 6 separate processing steps, but now they can be imported, configured, and output uniformly in one go. For scenarios with dozens or hundreds of videos, the time saved will be even more significant.
Operational Steps: Using Office Software to Batch Separate Video and Audio
Below, the specific operations are explained following the screenshot order. The software used here is HeSoft Doc Batch Tool . Its positioning is not that of a traditional single-purpose editing software, but a batch processing tool oriented towards office file handling. On the left, you can see categories like Word Tools, Excel Tools, PowerPoint Tools, PDF Tools, Image Tools, Video Tools, Audio Tools, etc. For users who frequently process large volumes of files, the advantage of this type of office software is that it streamlines repetitive labor, turning manual steps into batch tasks.
Step 1: Enter "Video Tools" and Select "Separate Video Picture and Sound"
After opening HeSoft Doc Batch Tool , select "Video Tools" from the tool categories on the left. After entering the Video Tools list, you can see multiple video-related batch processing functions, such as Remove Sound from Video, Remove Image from Video, Add Watermark to Video, Convert Video to MP4, Convert Video to AVI, etc. The function we need to use is the first item in the list, "Separate Video Picture and Sound," whose description is "Batch separate video files into silent video and audio files."
The purpose of selecting this function is to let the software automatically split the same batch of videos into two types of output: one is a silent video retaining only the picture, and the other is a separate audio file. Be careful not to mistakenly select "Remove Sound from Video" or "Remove Image from Video." "Remove Sound from Video" is more oriented towards getting only a silent video; "Remove Image from Video" is about keeping only the sound. "Separate Video Picture and Sound" will output both a picture file and a sound file simultaneously, better fitting the batch splitting requirement of this article.
Step 2: Add Video Files to Process or Import from Folder
After entering the function page, the top of the interface shows the current function name "Separate Video Picture and Sound." The page workflow is divided into 4 steps: Select records to process, Set processing options, Set save location, Start processing. The first step is to add the videos to be processed to the list.
In the screenshot, there are buttons on the upper right for "Add File" and "Import Files from Folder." If you only need to process a few specific videos, you can click "Add File" and manually select the MP4 files to split. If an entire folder consists of videos awaiting processing, it is recommended to click "Import Files from Folder," which adds all videos in the folder to the task list in one go, reducing the steps of selecting files individually.
After importing, the software displays the records in a table. The screenshot shows 6 imported records, with names including Video test 18.mp4, Video test 19.mp4, Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, Video test 30.mp4. The table also displays information like path, extension, creation time, and modification time, making it easy for users to check if the correct files are selected. If you find a record that doesn't need processing, you can use the delete icon in that row's action column to remove it. After confirming the list is correct, click "Next" at the bottom.
Step 3: Select Output Audio Format
The second step is setting the processing options. The option shown in the screenshot is "Audio Format," with selectable formats including mp3, aac, opus, and ogg, among which mp3 is already selected.
When choosing the audio format, decide based on the subsequent use. If you want stronger compatibility for playback on computers, phones, web players, and common office systems, choosing mp3 is usually safer. If the subsequent system or project requires aac, opus, or ogg, you can switch here. It should be noted that this step only sets the format for the separated sound file; the video picture output is still generated by the software according to the current function workflow.
After setting, click "Next" at the bottom of the page. The expected result of this step is: the software now knows which audio format to separate the sound into for each video, e.g., if mp3 is selected as in the screenshot, then after processing, a corresponding mp3 audio file with the same name will be generated for each video's results.
Step 4: Set Save Location and Start Processing
From the page workflow, after the audio format setting, there are two more stages: "Set Save Location" and "Start Processing." Although the screenshot does not expand the specific options for the save location page, according to the workflow prompt, the next step requires specifying where the processing results should be saved. It is recommended to choose an easily identifiable output directory and avoid mixing it with the original videos, especially when there are many videos. Creating a separate output folder makes checking the results easier.
After entering the final step, follow the on-screen prompts to start processing. During processing, the software will perform the separation tasks in batch according to the records in the list. Users do not need to open videos one by one or manually export audio. After completion, you can go to the save location to view the result folders. Referencing the post-processing screenshot, each video will have a folder named after it, containing the separated audio and video files.
Common Questions and Considerations
1. Do the videos need to be in the same folder before processing? Not strictly necessary, but if the number of videos is large, it is recommended to place them in the same folder beforehand. This makes using the "Import Files from Folder" function in the software more convenient and reduces the possibility of missing files.
2. Can mp4, mov, avi, and other videos all use the same method? The demonstration in the screenshots uses mp4 files, and the Video Tools list also contains various video format conversion functions. The examples in this article mainly use MP4. If your actual files include other formats, it is recommended to do a test import in the software first to ensure the list can recognize them before batch processing.
3. Will the original videos be deleted after separation? Judging from the results shown in the screenshot, the software generates new output files and folders. To be safe, it is still recommended to keep a backup of the original videos before batch processing, especially for important meeting recordings, course materials, or client assets.
4. Should I choose mp3 or another audio format? Without special requirements, choosing mp3 is more suitable for most office scenarios due to its good compatibility and ease of use. If the subsequent platform specifies aac, opus, or ogg, then choose the corresponding format as required.
5. Why does it generate a folder for each video after processing? As seen in the post-processing screenshot, the output creates a folder based on the original video name, e.g., Video test 19. The advantage of this is that the silent video and audio file separated from the same video are kept together, facilitating verification and archiving, which is especially suitable for batch processing a large number of files.
Summary: Using Batch Processing Tools to Reduce Repetitive Editing Tasks
The key to batch separating video and audio lies not in whether a single video can be split, but in whether it can be done stably, uniformly, and with fewer errors when the number of videos is large. HeSoft Doc Batch Tool , as an office-scenario-oriented batch file processing software, turns the video splitting process into a clear wizard: first select "Separate Video Picture and Sound," then batch import MP4 videos, set the audio format, and finally set the save location and start processing.
For users who frequently need to organize course videos, meeting recordings, short video material, or audio assets, this batch processing method can significantly reduce repetitive labor. It is recommended that before formally processing a large number of files, you test the output with 1 or 2 videos first. Once you confirm that the audio format and save location meet the requirements, you can then import the entire batch of files at once. This improves efficiency and ensures the output file structure is clear and easy for subsequent use.