This article is aimed at office users who need to batch process video materials, explaining how to convert multiple video files into AAC audio at once. Through the video-to-AAC function of HeSoft Doc Batch Tool , you can import a single file or an entire folder, confirm the processing list, set the save location, and start processing. The article includes before-and-after comparisons, detailed steps, and precautions to help users efficiently complete batch conversion from MP4 and other videos to AAC audio.
In many office scenarios, video files are merely information carriers, while the actual content that needs to be saved and used is the audio. For example, the spoken content in meeting recordings, the narration audio in course videos, the vocal material in interview videos, the background music in short videos, etc. If this content is scattered across multiple video files, converting them to audio one by one can be very tedious.
This article will introduce a method more suitable for office batch processing: using HeSoft Doc Batch Tool to convert multiple video files into AAC audio format at once. It is an office software designed for batch processing of documents and files. In addition to common document tasks, it also provides features like video tools and audio tools, suitable for handling a large number of repetitive file operations.
Through this article, you can understand which scenarios this feature is suitable for, what the effects are before and after conversion, and how to follow the software interface step by step to complete batch video to AAC conversion.
Applicable Scenarios: What Problems Can Batch Video to AAC Conversion Solve
Video files are usually large in size, containing both visuals and audio. If users only need the audio content, continuing to save the complete video will take up more storage space and is not conducive to subsequent transfer and use. Converting videos to AAC audio makes files lighter and more suitable for playback, archiving, and secondary processing.
Batch video to AAC conversion is particularly suitable for the following needs:
- Meeting audio archiving: Convert multiple meeting recordings to AAC for easy storage of speech records by date or project.
- Course material reuse: Extract the narration from training and teaching videos as audio, making it convenient for students to listen during their spare time.
- Editing material organization: Export sound material from multiple videos uniformly, making it easier for editors to filter and process later.
- Content review and transcription: When audio files need to be obtained first for dictation, transcription, or review, batch conversion can reduce preparation time.
- File format unification: Unify different video files into .aac after conversion, facilitating subsequent management under the same format.
If you often search for questions like "multiple MP4 to AAC", "batch convert video files to audio", "batch extract video sound", "video convert to AAC format", then the process in this article can be directly referenced.
Effect Preview: Batch Generate AAC Files from MP4 Videos
Before Processing: The files to be converted are multiple videos
The image below shows the file status before processing. There are multiple MP4 video files in the folder, each with a video thumbnail, and the file names are Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, Video test 30.mp4, Video test 32.mp4, Video test 33.mp4. This indicates that the current files are still video files, containing both visuals and audio.

When the number of files increases, opening and converting them one by one becomes very inefficient. Especially in project materials, asset libraries, or training folders, videos are often stored in batches. In such cases, it is more suitable to use batch processing software for unified conversion, rather than repeating the same operation many times.
After Processing: File extension changes to AAC
After conversion is complete, the files have become AAC audio format. In the image below, you can see the generated files include Video test 33.aac, Video test 32.aac, Video test 30.aac, Video test 24.aac, Video test 23.aac, Video test 22.aac. The main part of the file name corresponds to the original video, and the extension has changed to .aac, making it easy for users to identify the conversion results.

This result is very friendly for file management: you can quickly determine which video each AAC audio comes from based on the file name, and you can directly hand over the output directory to colleagues for playback, transcription, or archiving.
Operation Steps: From Selecting Features to Completing Batch AAC Conversion
Step One: Open the software and enter the video tools category
After launching HeSoft Doc Batch Tool , first pay attention to the left feature category bar. As seen in the screenshot, the software is categorized according to different file processing types, including Home, Task Flow, All Tools, File Name, Folder Name, File Organization, Word Tools, Excel Tools, PowerPoint Tools, PDF Tools, Text Tools, Image Tools, Video Tools, Audio Tools, More Tools, etc.
Since we are dealing with video files this time, you should click "Video Tools" on the left. After entering Video Tools, the middle area will display batch processing functions related to videos.

The expected result of this step is: the software interface switches to the video tools feature list, preparing for the subsequent selection of the specific conversion task.
Step Two: Select "Video to AAC"
In the video tools list, you can see multiple video processing options. Corresponding to the goal of this article is "17. Video to AAC", with the description "Batch convert video files to AAC format". The position of this feature has been marked in the screenshot.
After selecting this function, the software will enter the dedicated "Video to AAC" task page. It should be noted here that if your target is AAC audio, do not select other functions like "Video to MP4", "Video to AVI", or "Video to OGG". Different functions correspond to different output formats, and choosing the correct function can avoid post-processing formats that do not meet expectations.
Step Three: Import videos by adding files or folders
After entering the "Video to AAC" page, there are two main import entries at the top: "Add Files" and "Import Files from Folder". This is a crucial step in the batch processing workflow.
- If the videos are scattered in different locations, you can click "Add Files" and select specific videos as needed.
- If all videos to be converted are already placed in the same folder, you can click "Import Files from Folder" to import them in batches more quickly.
As seen in the screenshot, 6 records have been successfully imported into the list. Each record displays information such as serial number, name, path, extension, creation time, modification time, and actions. The file paths show that these videos come from the same test folder, and the extensions are all mp4.

The purpose of this step is to add all videos that need to be converted to the same processing queue. Once the import is complete, users do not need to set the output format individually; the software will batch execute AAC conversion based on the current function.
Step Four: Check the list to avoid omissions or incorrect conversions
Batch processing is highly efficient, but its premise is an accurate pending list. Therefore, before clicking next, it is recommended to carefully check the list content. You can focus on checking the following items:
- Record count: The bottom of the screenshot shows the record count is 6, which should match the actual number of videos to be converted.
- File names: Confirm that files like Video test 22.mp4, Video test 23.mp4, etc., are all in the list.
- File paths: Confirm the paths come from the correct folder to avoid mistakenly importing videos from other projects.
- Extension: The extension in the screenshot is mp4, indicating that the imported files are MP4 video files.
- Action column: If a record is found to be unnecessary for processing, it can be removed through the action entry in the list.
The interface also provides "Filter" and "Sort" buttons. When dealing with a large number of files, these buttons can assist in finding and organizing records. After checking, click "Next" at the bottom.
Step Five: Set the save location for better output file management
From the interface flow, it can be seen that the software splits the task into three stages: selecting records to process, setting the save location, and starting processing. After completing the file selection, the next step is to set the save location.
It is recommended to plan the save location separately and not arbitrarily choose a temporary directory. A more recommended practice is: create a new folder next to the original video folder specifically for storing output results, such as "Video to AAC Results", "AAC Audio Output", or a directory named by project. This way, after processing is complete, you can directly go to this folder to view all .aac files.
For team collaboration, a clear output directory also reduces communication costs. You can send the entire AAC output folder to colleagues without needing to explain which are original videos and which are converted audio files.
Step Six: Enter the start processing stage and check the results
After the save location is set, continue to enter the "Start Processing" stage. The software will execute the conversion for each file in the list, converting videos to AAC audio format. During the batch processing period, the user only needs to wait for the task to complete, without having to repeatedly select the format and save path for each video.
After processing is finished, open the output directory to check the results. Under normal circumstances, you should see AAC files corresponding to the original videos. For example, the original file Video test 22.mp4 gets converted to Video test 22.aac, and the original file Video test 33.mp4 gets converted to Video test 33.aac. Combined with the post-processing screenshot, the converted files are now uniformly displayed as AAC audio files.
If you are processing a large number of videos, it is recommended to randomly open a few AAC files for a listening test after conversion to confirm the audio content meets expectations before proceeding with subsequent operations like deleting temporary files, uploading, or archiving.
Frequently Asked Questions and Notes
1. What is the difference between AAC files and MP4 files?
MP4 is usually a video container format that can contain visuals and audio; AAC is an audio format that primarily stores sound content. After converting a video to AAC, the output file is suitable for playing audio but no longer for watching video visuals.
2. Is it necessary to organize the folder before batch conversion?
Organization beforehand is recommended. Centralizing the videos to be converted into a single folder makes it more convenient to use "Import Files from Folder" and reduces the chance of missing files. For materials with messy file names, you can also standardize the naming conventions before conversion.
3. Why should you check the path and extension in the file list?
The path helps confirm if the import source is correct, and the extension helps confirm if the file type meets expectations. In the screenshot, the paths point to the same folder, and the extensions are mp4, which indicates that this task is processing the same batch of MP4 videos.
4. What subsequent operations are the converted AAC files suitable for?
AAC files can be used for audio playback, material archiving, content transcription, material review, course audio organization, etc. Compared to videos, audio files are lighter and more convenient to use in scenarios where only the sound content is needed.
5. How to reduce confusion if there are many files?
It is recommended to adopt a three-point practice: First, put the source videos in a unified folder before conversion; Second, check the record count and file paths after importing; Third, set a separate output save location. This can help keep the file status clear before, during, and after processing.
Summary: Entrust repetitive video-to-audio work to batch processing tools
Converting multiple video files to AAC at once is not suitable for manual one-by-one operation. The more files there are, the more time is wasted on repetitive clicks, and the more prone it is to omissions and format inconsistencies. HeSoft Doc Batch Tool , as an office software, provides batch conversion capabilities for video files, helping users uniformly convert a large number of videos to AAC audio.
The entire process is not complicated: enter Video Tools, select "Video to AAC", import videos via "Add Files" or "Import Files from Folder", check the pending list, set the save location, and finally start processing. After processing is complete, you will get a batch of .aac audio files corresponding to the original videos.
If you are organizing meeting recordings, training videos, or short video materials, it is recommended to immediately centralize the videos to be converted into one folder and perform batch processing according to the steps in this article. This not only saves a lot of repetitive operation time but also makes the audio file output more standardized and easier for subsequent use.