When you need to convert a large number of video files to OPUS audio, processing them one by one is not only slow but also prone to omissions. This article uses HeSoft Doc Batch Tool as an example to explain how to find "Convert Video to OPUS" in a video tool, and create batch tasks by adding files or importing files from a folder. The article also shows a comparison of MP4 videos before processing and OPUS audio after processing, helping users quickly master the complete workflow.
Many people, when faced with the need to convert video to audio, instinctively look for a converter and export files one by one. However, in real office scenarios, you rarely deal with a single file—it’s often a whole batch: course recordings, meeting videos, material packs, surveillance clips, interviews, short video backups, and more. Converting all these videos to OPUS audio manually is extremely time-consuming and repetitive.
This article introduces a method better suited for office environments: using the "Convert Video to OPUS" feature in HeSoft Doc Batch Tool to batch convert multiple video files. The core value of this software lies in batch processing, helping users reduce repetitive tasks. Whether your needs involve "converting multiple MP4 videos to OPUS audio," "batch extracting audio from videos," or "unifying audio formats," you can follow the steps in this article to get it done.
Applicable Scenarios: Who Benefits from Batch Video to OPUS Conversion
Data Administrators: Need to organize video data from project folders into audio versions for easier archiving, retrieval, and distribution.
Training and Education Professionals: Have recorded numerous course videos, but learners or internal staff only need the audio content. Converting to OPUS allows for lightweight storage.
Content Operations Personnel: Need to extract sound from short videos for copy review, speech-to-text transcription, auditing, or material categorization.
Corporate Office Workers: Meeting recordings are often large in size. If only the spoken content needs to be preserved, converting the video to OPUS audio makes it easier to transfer and store long-term.
Development and System Integration Personnel: Some systems may require audio resources in OPUS format. Batch conversion can unify video files from various sources into a single audio format.
The common thread in these scenarios is a high volume of files, repetitive operations, and the need for a unified format. Using a batch processing tool consolidates what would otherwise be a series of repeated clicks into a single task.
Preview of Results: Files Before Conversion are MP4 Videos
In the pre-processing screenshot, you can see multiple MP4 video files in the folder, with names like "Video test 22.mp4," "Video test 23.mp4," "Video test 24.mp4," and "Video test 26.mp4." They are displayed as video thumbnails, indicating these files contain both visuals and sound.
If only the audio content is needed, these MP4 files are not very lightweight. Especially when dealing with a large number of videos, opening and converting each one individually leads to a lengthy workflow and makes it difficult to ensure every file is processed.
Preview of Results: Corresponding OPUS Audio Generated After Conversion
In the post-processing screenshot, the files have been converted to the OPUS audio format, with the extension changing from .mp4 to .opus. You can see files like "Video test 22.opus," "Video test 23.opus," "Video test 24.opus," and "Video test 30.opus," indicating that the output results maintain a correspondence with the original file names after batch conversion.
This effect is crucial when dealing with a large number of files. Users do not need to manually rename them and can quickly identify the audio source based on the file name. Later, if verification against the original video is needed, a simple name check suffices.
Step 1: Enter the Video Tools Category in HeSoft Doc Batch Tool
After opening the software, first look at the left navigation bar. The screenshot shows that HeSoft Doc Batch Tool is categorized by file type and processing task, 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, and More Tools.
Since the input files this time are videos, you should select "Video Tools" on the left. The purpose of this step is to enter the collection of video-related processing functions and avoid searching in other tool categories.
On the Video Tools page, the software displays multiple batch video functions in card form. Users can choose the corresponding function based on their output target. For example, to output MP4, select Convert Video to MP4; to output AAC, select Convert Video to AAC. This tutorial aims to output OPUS, so select "19. Convert Video to OPUS".
Step 2: Open the "Convert Video to OPUS" Task Page
After clicking "Convert Video to OPUS," you will enter a dedicated task page. There is a "Return to Main Panel" button on the top left, and the current function name "Convert Video to OPUS" is displayed next to it. This helps users confirm that they haven't entered the wrong conversion task.
The top of the task page provides several buttons, including Add Files, Import Files from Folder, Clear, and More. The central area is the list of files pending processing, and at the bottom, you can see a "Next Step" button. The interface also displays the process stages: Select records to process, Set save location, Start processing.
This wizard-style page is suitable for batch office operations because it breaks the task into several clear stages: first confirm the input files, then determine the output location, and finally execute the processing. Users don't need to memorize complex procedures; they just follow the steps presented.
Step 3: Choose to Add Files or Import Files from a Folder
If the videos to be converted are scattered in different locations, you can click "Add Files" to select multiple videos and add them to the list as needed. The red arrow in the screenshot points to "Add Files," indicating it is one of the primary entry points for importing videos to be processed.
If all the videos are in the same folder, it is more recommended to click "Import Files from Folder". This allows you to import all videos from the folder into the task list at once, which is particularly suitable for tasks like batch MP4 conversion or batch audio extraction. Compared to selecting files one by one, importing from a folder is less prone to missing files.
After files are imported, the list will display each record. The screenshot shows the Name column listing "Video test 20.mp4," "Video test 22.mp4," "Video test 23.mp4," etc.; the Path column shows the file's location; the Extension column shows mp4; along with creation time and modification time. This information is used for pre-conversion verification to ensure the task list is correct.
Step 4: Verify the List to Avoid Batch Conversion Errors
The advantage of batch processing is speed, but accuracy of the input is the prerequisite. Before clicking "Next Step," it is recommended to check the list from the following aspects.
Check File Names: Confirm that all files in the list are videos that need to be converted to OPUS. If irrelevant files are mixed in, delete the corresponding records in the Operation column.
Check File Paths: The path can help determine if the file source is correct. The path information is especially useful when there are multiple similar folders on the computer.
Check Extensions: The screenshot shows the extension as mp4, indicating the sample task processes MP4 videos. If your actual work involves other video formats, you should confirm whether they can be correctly recognized by the current task.
Use Filter and Sort for Assisted Confirmation: The right side of the page displays "Filter" and "Sort" buttons. When the list is long, these entry points can help you review records and improve verification efficiency.
Clear and Start Over if Necessary: If the imported files do not meet expectations, you can click "Clear" and re-select the correct video files or folder.
Step 5: Click Next to Set the Save Location
After confirming the list is correct, click "Next Step" at the bottom. The interface flow prompts that the next stage is "Set Save Location." This step determines which directory the OPUS audio files will be output to.
It is recommended not to casually save the output files to the desktop or the original video directory, especially for large batch processing tasks. A more standardized approach is to create a new, dedicated folder, such as "OPUS Output," "Video to Audio Conversion Results," or an output directory named after the project. This allows you to directly view all .opus files in that folder after processing is complete.
Setting the save location clearly also facilitates team handovers. For instance, you can send the entire output folder to a colleague without having to sift through the original video files to pick out the audio results one by one.
Step 6: Start Processing and Verify the OPUS Audio Results
After setting the save location, proceed to "Start Processing." The software will execute the conversion on the video files in the task list and output them in OPUS audio format. During the execution of the batch task, the user only needs to wait for the processing to complete without repeating settings for each file.
Once completed, open the output directory, check if the file extensions are .opus, and verify that the number of files roughly matches the task list. You can also spot-check a few files by playing them to confirm the audio content is normal. If the main body of the file name matches the original video, subsequent searching and matching will be much more convenient.
Common Questions and Notes
What's the difference between converting video to OPUS and converting video to MP3?
Both extract the sound from a video into an audio file, but the output format is different. MP3 is more common, while OPUS is also popular for speech and network transmission scenarios. The choice of format should be decided based on the requirements of the subsequent platform or system used.
Will the original MP4 files disappear after conversion?
Based on the processing results, OPUS files are generated after conversion. For safety, it is recommended not to delete the original MP4 videos until you have confirmed the output results are correct.
What should I pay attention to when there are a large number of files?
It is recommended to do a trial run with a small number of files first. After confirming the output format, save location, and playback quality all meet requirements, then import all files for batch processing. This reduces the risk of large-scale rework.
Can I delete files I don't want to process midway through?
In the task list, each record on the right has an Operation column. The screenshot shows a delete icon. You can remove records you don't want to convert before starting the process.
Why use an office batch processing tool instead of exporting one by one from a media player?
Media players are more oriented toward playback and single-file operations, whereas batch processing tools are designed for unified handling of a large volume of files. For the task of converting dozens of videos to OPUS, a batch tool significantly reduces the number of clicks and manual intervention during the wait time.
Summary
The key to converting multiple video files to OPUS audio in one click is to transform scattered single-file operations into a batch task. When using HeSoft Doc Batch Tool , you simply need to go into Video Tools, select "Convert Video to OPUS," import the videos to be processed, check the list, set the save location, and start processing to get unified .opus audio files.
If you are processing a large number of MP4 videos and want to quickly extract audio while maintaining the correspondence of file names, you can follow the workflow in this article. Compared to converting files one by one, batch processing is more suitable for organizing office materials, archiving courses, extracting meeting audio, and material management, making repetitive file processing more controllable and efficient.