This article is aimed at office users who need to batch convert a large number of video files to OPUS audio. It introduces how to use HeSoft Doc Batch Tool to complete the entire workflow from selecting functions, importing videos, confirming the pending list, setting the save location, to starting the process. Through batch processing, users do not need to open video software or manually export audio one by one, making it suitable for scenarios such as meeting recordings, course videos, material files, and short video clips. The article combines before-and-after effect images and software operation screenshots to help users understand the conversion results and master an efficient and stable method for batch file processing.
In daily office work and content organization, we often encounter this problem: a folder contains dozens or even hundreds of MP4 video files, but only the audio content is actually needed. For example, meeting recordings need to be archived as audio, course videos need to be converted into a format suitable for listening, audio tracks need to be extracted from material libraries, or the mobile playback environment is more suitable for the OPUS audio format. Opening video editing software one by one to export audio is not only time-consuming but also prone to missed processing, naming confusion, and significant repetitive work.
This article addresses the issue of "batch converting many video files to the OPUS audio format." The software used here is the one shown in the screenshot, " HeSoft Doc Batch Tool ". It is positioned as office software, with its core value being batch file processing, reducing repetitive operations, and improving work efficiency. Although the processing object this time is video files, it also falls under a typical office file batch processing scenario: uniformly converting a batch of input files into a target format and generating directly usable result files.
Applicable Scenarios: When is Batch Video to OPUS Conversion Suitable?
Batch video to OPUS conversion is not only suitable for professional audio/video personnel; many office workers, academic staff, operations personnel, and data administrators also use it. For example, a corporate training department receives a batch of MP4 course videos and wants to extract them as OPUS audio for employees to listen to during commutes; a meeting secretary needs to save the speech portion of a meeting recording as audio for later minute compilation; a new media team needs to separately save background sounds and voiceovers from short video materials; data archiving personnel want to unify file formats to reduce compatibility differences between different players.
OPUS is a common audio format, often used in scenarios like voice communication, web audio, and streaming media. Converting videos like MP4, MOV, or AVI to OPUS essentially involves outputting the audio track from the video into .opus audio files. For business processes that only require sound and not visuals, this makes file management clearer and facilitates subsequent uploading, transcription, archiving, or playback.
Preview of the Effect: Before Processing, There Were Multiple Video Files
Before processing, the folder contained a batch of MP4 video files. The screenshot shows multiple videos named "Video test," such as Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, Video test 30.mp4, Video test 32.mp4, Video test 33.mp4, etc. They all have video thumbnails, indicating that the current files are still in video format, requiring both picture and sound playback.

If processing such files manually, you typically need to select videos one by one, set the output format, wait for the conversion to complete, and then move to the next. The larger the number of files, the more repetitive clicks are involved, and the easier it is to have omissions. The advantage of using a batch processing tool is that you can select all the videos to be converted at once and let the software execute the conversion tasks uniformly.
Preview of the Effect: After Processing, OPUS Audio Files Are Generated
After processing is complete, the original video files will have corresponding OPUS audio results. In the screenshot, you can see the filenames remain as Video test 22, Video test 23, Video test 24, etc., but the extensions have become .opus, such as Video test 22.opus, Video test 23.opus, Video test 24.opus, Video test 30.opus, Video test 32.opus, Video test 33.opus. This indicates that after batch conversion, the output results are already OPUS Audio files.

These results are very suitable for subsequent organization. Users can quickly match the original video by the filename, and they can also archive, upload, or use the OPUS files separately for audio playback. For office scenarios requiring the processing of large volumes of video data, keeping the original filename and unifying the extension can significantly reduce verification costs.
Step 1: Enter the Video Tools and Select "Convert Video to OPUS"
After opening " HeSoft Doc Batch Tool ", select "Video Tools" from the left function category. The right side will display batch functions related to video processing, such as converting videos to MP4, AVI, MKV, MOV, FLV, WebM, MPEG, MP3, AAC, OGG, etc. According to the screenshot, the function to use this time is "19. Convert Video to OPUS", with the description "Batch convert video files to OPUS format".

The purpose of this step is to first confirm you are using the correct batch conversion function. Because multiple video format conversion options are present on the same page, if you mistakenly select MP3, AAC, or OGG, the output file format will be different. After selecting "Convert Video to OPUS," the software will enter a dedicated conversion task page, and subsequently imported videos will all be processed in OPUS format.
Step 2: Add the Video Files to Convert
After entering the "Convert Video to OPUS" page, you can see buttons like "Add Files," "Import Files from Folder," "Clear," and "More" at the top. The page flow is divided into three steps: the first step is "Select the records to process," the second step is "Set the save location," and the third step is "Start processing." In the first step, users need to add the video files to be converted to the list.

If you only need to process a small number of specific videos, you can click "Add Files" and select the MP4 or other video files from your computer to convert. If the videos are all concentrated in the same folder, it is more suitable to click "Import Files from Folder," as this allows you to import multiple videos from the folder at once, reducing the time spent on repeated selection. The red arrow in the screenshot points to the "Add Files" button, indicating it is one of the entry points to start importing files.
Once importing is complete, the files will appear in the table below. The table lists information such as "No., Name, Path, Extension, Creation Time, Modification Time, Actions." Users can confirm whether the files are from the correct folder using the name and path, and confirm the currently imported files are video files like mp4 via the extension. If a certain file does not need to be processed, you can delete it in the "Actions" column of the corresponding record; if you want to reselect, you can also use the "Clear" button to clear the current list before importing again.
Step 3: Check the List and Proceed to the Next Step
The most error-prone part of batch processing isn't the conversion process itself, but selecting the wrong files or missing files when importing. Therefore, before clicking next, it is recommended to check the number of files, file names, and paths in the list. The screenshot shows that multiple records have been imported, including Video test 20.mp4, Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, Video test 30.mp4, Video test 31.mp4, Video test 32.mp4, Video test 33.mp4, etc., with the extension column showing mp4, indicating they are the video files to be converted.
The right side of the page also provides "Filter" and "Sort" buttons. For cases with a large number of files, filtering or sorting can assist in checking the list to avoid bringing unrelated files into the conversion task. After confirming there are no errors, click the "Next" button at the bottom of the page to enter the "Set save location" stage.
Step 4: Set Save Location and Start Batch Processing
Following the page flow, the second step is "Set the save location." The purpose of this stage is to specify where the converted OPUS audio files should be saved. It is recommended to choose a clear output folder, for example, creating a new "OPUS Audio" folder next to the original video folder to easily distinguish them from the source videos. This way, after processing is complete, you can keep the original videos and quickly find the converted audio results.
After completing the save location setting, proceed to the third step, "Start processing." At this point, the software will batch convert the video files to OPUS format according to the previously imported records. For multi-file tasks, users do not need to repeatedly set the format or wait for one export after another. Once the task is confirmed to start, the software will execute processing in list order. After processing, open the save location to check the .opus files.
Frequently Asked Questions and Notes
1. Will the video picture be retained after converting to OPUS? OPUS is an audio format, and the conversion result is an audio file, which no longer includes the video picture. If the picture is needed later, please keep the original video file.
2. Will the file names become messy? From the result images, you can see the output usually keeps the original filename, only changing the extension to .opus. This makes it easy to match the audio with the original video.
3. Why is it recommended to check the list first? Batch processing might involve many files at once. If files that don't need processing are accidentally mixed in during import, they will be converted together later. Checking names, paths, and extensions in advance can reduce rework.
4. Can I import an entire folder at once? The screenshot provides an "Import Files from Folder" button, which is suitable for processing a large number of videos in the same folder, typically more efficient than adding files one by one.
5. Do I need to back up before processing? Although batch conversion usually generates new output files, it is recommended to keep the original video files before processing important materials, especially for meeting recordings, course materials, project delivery files, etc.
Summary: Using Batch Processing to Reduce Time Spent on Repeated Audio Export
The key to converting a large number of video files to OPUS audio is not whether a single file can be converted, but whether the entire task can be completed efficiently, stably, and in batches. Using the "Convert Video to OPUS" function in " HeSoft Doc Batch Tool ", you can form a complete workflow from function selection, file import, list confirmation, save location setting, to starting processing, reducing the repetitive labor of exporting one by one.
If you have a batch of MP4 videos, course recordings, meeting videos, or material files that need to be uniformly extracted as OPUS audio, you can follow the steps in this article: first enter the video tools and select "Convert Video to OPUS," then add files or import files from a folder, check the list, set the save location, and start processing. This not only improves processing efficiency but also makes the output files more organized and easier to manage subsequently.