This article introduces how to use HeSoft Doc Batch Tool to batch convert multiple MP4 video files into AAC audio format. The article, combined with before-and-after effect images and the software interface, explains the complete workflow from selecting the video tool, accessing the video-to-AAC feature, batch importing files, confirming the processing list, setting the save location, to starting the process. It is suitable for office scenarios that require extracting audio from a large number of videos, organizing materials, or creating audio archives.
In daily office work, training material organization, short video asset archiving, or meeting content review, a common problem arises: you have a batch of video files, such as multiple MP4 videos, but what you actually need is only their audio. Opening each video individually to export the audio separately is not only time-consuming but also prone to missing files, chaotic naming, and the need to repeatedly check format consistency later.
This article aims to solve the problem of "batch converting many video files into AAC audio format." Using the video tool in HeSoft Doc Batch Tool , you can add multiple video files to a task list at once and uniformly convert them to .aac audio files. It is positioned as a batch file processing tool within office software, with its core value being not requiring users to click repeatedly, but centralizing repetitive, mechanical file conversion tasks to help users save time and reduce error rates.
The following will explain, with screenshots and in the actual order of operation, how to batch convert multiple MP4 videos into AAC audio format.
Use Cases: When do you need batch video to AAC audio conversion
AAC is a common audio encoding format, relatively small in size, with good compatibility, suitable for preserving the sound content from videos. When you no longer need the video image and only want to keep the audio, converting videos to AAC makes them easier to transfer, archive, and process later.
The following scenarios are suitable for using the batch video to AAC function:
- Extracting audio from training videos: When there are many internal company courses and online training recordings, you can uniformly convert the videos to AAC, making it convenient for employees to listen on mobile devices.
- Meeting recording organization: If meeting recordings are mainly used to review spoken content, you can batch extract the audio to reduce file size and facilitate material preparation before text transcription.
- Short video asset management: Operations, editing, or content teams often need to extract background music, narration, or interview sound from multiple videos. Batch conversion to AAC avoids handling them one by one.
- Archiving historical video materials: When the video image is no longer important and only the sound record needs to be kept, you can uniformly convert them into audio format for long-term preservation.
- Cross-department file delivery: When the recipient only needs the audio content, directly batch outputting AAC files is more lightweight than sending many large video files.
From an SEO search habit perspective, users might search for "MP4 batch to AAC," "batch extract audio from video," "convert multiple videos to AAC audio," "batch video to audio format," etc. The operating method in this article is exactly centered around these needs.
Result Preview: Before processing, there are multiple MP4 videos; after processing, AAC audio is generated
Before processing: Multiple MP4 video files in the folder
In the folder before processing, you can see 6 MP4 video files with names including Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, Video test 30.mp4, Video test 32.mp4, Video test 33.mp4. Each file has a video thumbnail, indicating that the current files are still in video format, containing both image and sound.
If handling such files manually, you usually need to open a video conversion tool, select a file, set the output format, wait for the conversion to complete, and then continue processing the next file. This is acceptable when the number of files is small, but when it reaches dozens or hundreds, the repetitive operation significantly impacts office efficiency.
After processing: Uniformly obtained AAC audio files
After processing is complete, the same batch of files has been converted to AAC audio format. You can see the file extension has changed from .mp4 to .aac, for example, Video test 33.aac, Video test 32.aac, Video test 30.aac, Video test 24.aac, Video test 23.aac, Video test 22.aac. Now the files are no longer displayed as video thumbnails but as audio file icons.
This result shows that: after batch conversion, the main body of the file name is retained, and the format is uniformly changed to AAC. For users who need subsequent organizing, uploading, sending, or archiving, a unified format can reduce a lot of manual checking work.
Operating Steps: Using HeSoft Doc Batch Tool for batch conversion to AAC
Step 1: Enter the video tool and select the "Convert Video to AAC" function
After opening HeSoft Doc Batch Tool , you can see multiple tool categories on the left, such as File Name, Folder Name, File Organization, Word Tools, Excel Tools, PowerPoint Tools, PDF Tools, Text Tools, Image Tools, Video Tools, Audio Tools, etc. Since the task involves video files, you need to first enter the "Video Tools" on the left.
In the video tool function list, you can see multiple functions related to batch video processing, such as separating image and sound from video, deleting sound from video, deleting image from video, adding watermark to video, and converting video to MP4, AVI, MKV, MOV, FLV, WMV, WebM, MPEG, 3GP, OGV, TS, MP3, AAC, OGG, etc. According to the needs of this article, "17. Convert Video to AAC" should be selected.
The purpose of this step is to tell the software the processing type for this task: it is not compression, nor conversion to another video format, but converting video files to the AAC audio format. After selecting the correct function, the subsequently imported files will be output as AAC.
Step 2: Add the video files to be converted
After entering the "Convert Video to AAC" function page, the top of the interface provides two entry points: "Add Files" and "Import Files from Folder." These two methods suit different office scenarios:
- Add Files: Suitable when you only need to process a few specific video files, allowing you to manually select the files to be converted.
- Import Files from Folder: Suitable when there are many videos in the same folder that need unified processing, allowing you to add videos from the folder to the list more quickly.
In the screenshot, 6 MP4 files have been imported. The list shows the name, path, extension, creation time, modification time, and other information for each file to be processed, sorted by sequence number. The extension column shows mp4, indicating that the files currently added to the task are all MP4 video files.
The purpose of this step is to create the file list for this batch process. Users can confirm through the list whether the files are imported completely and can also use the delete operation in the interface to remove records that do not need processing. Buttons like "Filter" and "Sort" are also visible on the right side of the list to assist in viewing and organizing pending records when there are many files.
Step 3: Check the pending list, confirm the number of files and paths
After importing the files, it is not recommended to start processing immediately. Instead, check the list first. The bottom of the screenshot shows "Record Count: 6," indicating that 6 video files are currently in the pending queue. For batch conversion tasks, this step is very important because it can catch the following issues early:
- Whether a video file is missing;
- Whether a video that does not need conversion was mistakenly selected;
- Whether the file paths are from the correct folder;
- Whether the extensions meet the processing expectations, for example, mp4 here;
- Whether there are duplicate or confusing file names.
After confirming everything is correct, you can click the "Next" button at the bottom of the page. The process tip at the top of the interface shows that the current process includes three stages: "Select records to be processed," "Set save location," and "Start processing." After clicking Next, you will enter the save location setting stage.
Step 4: Set the save location for AAC files
During batch conversion of videos to AAC, the save location determines where the converted audio files are output. It is recommended to choose a clear directory according to your office habits, for example, creating a new "Converted AAC Audio" folder next to the original video folder, or naming the output directory using project names or dates to facilitate later searching.
There are two purposes for setting the save location: first, to avoid mixing converted AAC files with the original video files, which would cause management chaos; second, to quickly check the results after conversion. If there are many files, it is advised not to casually save them to the desktop or a temporary directory to prevent accidental deletion during later cleanup.
Since the interface process clearly includes a "Set save location" step, users only need to follow the software prompts to complete the save directory setting. After setting it, continue to the next step to enter the start processing stage.
Step 5: Start batch processing and wait for conversion to finish
After entering the "Start Processing" stage, the software will batch process the added video files according to the task list, converting the audio content from the videos into AAC files. At this point, the user does not need to open each MP4 individually or repeatedly select the output format for each file. The software will execute uniformly based on the previously selected "Convert Video to AAC" function.
After waiting for the processing to complete, open the save location to check. If you see the file extensions have changed to .aac, the conversion is successful. Looking at the post-processing result image, you can see that the original files like Video test 22.mp4, Video test 23.mp4, etc., have correspondingly generated audio files like Video test 22.aac, Video test 23.aac, etc.
For office users, this batch processing method is particularly suitable for repetitive tasks. One-time configuration, batch output can significantly reduce manual operation time and maintain consistency in file naming and format.
Frequently Asked Questions and Notes
1. Is there still video image after conversion to AAC?
AAC is an audio format. After conversion, the .aac file mainly preserves sound content and will no longer play an image as a video file. If you still need to preserve the image, you should keep the original MP4 video file or choose another video format conversion function.
2. Why is it recommended to set a separate output folder?
Batch conversion will generate multiple AAC files. If they are mixed directly with the source videos, it is inconvenient to check when there are many files. Setting a separate save location allows the pre-processing videos and post-processing audios to be managed separately, which is also more suitable for team collaboration and project archiving.
3. When there are many files, should I use "Add Files" or "Import Files from Folder"?
If there are only a few scattered files, you can use "Add Files." If a folder contains a large number of videos that need unified conversion, using "Import Files from Folder" is more efficient. The top of the screenshot provides both entry points, and users can choose based on how their actual files are organized.
4. Why check the record count before batch processing?
The record count helps confirm exactly how many files this task will actually process. The screenshot shows a record count of 6, meaning 6 videos will participate in the conversion. If the record count does not match expectations, you should go back and check the imported files first to avoid discovering omissions only after the conversion is complete.
5. What happens to the file name after converting MP4 to AAC?
From the result preview, it can be seen that the processed files retain the main body of the original file name; only the extension changes from .mp4 to .aac. This naming method makes it easy to quickly match the audio file with the original video, which is suitable for material management and batch archiving.
Summary: Using Batch Processing to Reduce Repetitive Conversion Operations
Batch converting a large number of video files into AAC audio format is essentially a typical office efficiency problem. As the number of files increases, manual one-by-one conversion wastes a lot of time and is prone to issues like missed selections, wrong selections, and format inconsistencies. Using HeSoft Doc Batch Tool , you can select "Convert Video to AAC" in the video tools, then build a task list in batch via "Add Files" or "Import Files from Folder," set the save location, and start processing all at once.
As seen from the before-and-after processing results, multiple MP4 videos can generate corresponding AAC audio files in batch, with clear file names and unified formats. For users who frequently handle training videos, meeting recordings, short video assets, and audio archiving, this type of batch file processing capability can significantly reduce repetitive work.
If you currently have a batch of videos from which you need to extract audio, it is recommended to first gather the source videos into one folder, then follow the steps in this article to use the "Convert Video to AAC" function for batch processing. This can not only improve conversion efficiency but also make subsequent file management more standardized.