When you need to save the audio from a large number of videos separately as AAC format, converting them one by one can waste a lot of time. This article uses HeSoft Doc Batch Tool as an example to explain how to use the "Video to AAC" function in "Video Tools" to batch generate corresponding AAC audio files from multiple MP4 videos. The content includes applicable scenarios, before and after effects, detailed operation steps, and notes for batch conversion.
Many users, when organizing materials, do not necessarily need the complete video footage but only want to keep the audio. For example, a batch of training videos needs to be made into audio materials, meeting recordings need to extract speech content, and voiceovers in source videos need to be given to colleagues for editing. If there are only one or two files, manual conversion is acceptable; but if there are dozens of MP4 videos in a folder, exporting audio one by one would be very inefficient.
The solution introduced in this article uses HeSoft Doc Batch Tool to batch convert multiple video files to AAC audio format. HeSoft Doc Batch Tool is a batch file processing software designed for office scenarios, emphasizing the use of a unified process to handle a large number of files, reducing repetitive labor. For needs like "how to convert multiple videos to AAC with one click" or "how to batch extract audio from MP4 videos," it can help users add a list of videos to a task at once and then output them uniformly as AAC files.
Applicable Scenarios: Why Batch Audio Extraction from Video is Suitable for Office Software Processing
Converting video to AAC seems like a multimedia operation, but in many corporate and personal workflows, it is closer to a batch file organization task. The focus of users is often not complex editing, but how to quickly, accurately, and in batches convert a group of files to another format while keeping filenames and directory management clear.
For example, a training department might regularly receive course screen recordings and need to convert the videos to AAC for easy trainee listening; administrative staff might need to save the audio from meeting recordings for subsequent minute-taking; new media teams might need to batch extract audio from source videos for secondary editing or archiving; individual users might also wish to convert saved video content to audio for playback on mobile phones or in-car devices.
These scenarios share a commonality: a large number of files, repetitive operations, and a need for neat results. Compared to single video conversion tools, batch processing software is more suitable for handling such office-type tasks. It transforms repetitive operations into a one-time task through the process of "importing a file list—setting the output location—starting processing."
Effect Preview: From a Video Folder to an AAC Audio Folder
Before Processing: Multiple MP4 Files Awaiting Conversion
The image below shows the file status before processing. There are multiple MP4 videos in the folder, with filenames including Video test 22.mp4, Video test 23.mp4, Video test 24.mp4, Video test 30.mp4, Video test 32.mp4, and Video test 33.mp4. Each file has a video thumbnail, indicating they are currently still in video format.
If users need the audio content, these MP4 videos are usually larger in size and not convenient for use in audio-only scenarios. Especially in situations like mobile listening, speech recognition, and data archiving, batch converting videos to AAC is more practical.
After Processing: Corresponding AAC Audio Files Generated
After processing is complete, the file extensions change to .aac. In the example, files like Video test 33.aac, Video test 32.aac, Video test 30.aac, Video test 24.aac, Video test 23.aac, and Video test 22.aac can be seen. This means a corresponding AAC audio file was generated for each original video.
This type of output is very friendly for batch organization. The original videos and converted audio can be matched one-to-one by filename, eliminating the need for manual renumbering. For files already numbered, such as courses, meetings, interviews, and source materials, retaining the corresponding names can significantly reduce post-verification costs.
Operation Steps: Batch Converting Video Files to AAC Format
Step 1: Open the software and enter the "Video Tools" category
After starting HeSoft Doc Batch Tool , first look at the function bar on the left. The software divides different file types and office processing needs into multiple categories, such as File Name, Folder Name, File Organize, Word Tools, Excel Tools, PowerPoint Tools, PDF Tools, Text Tools, Image Tools, Video Tools, Audio Tools, etc. This time we need to process video files, so click "Video Tools" on the left.
After entering Video Tools, the main area will display a series of video-related function cards. The screenshot shows that the software not only supports video format conversion but also includes functions like separating video and audio, removing audio from video, removing image from video, and adding watermarks to videos. For the requirement in this article, select "Convert Video to AAC".
The key to this step is selecting the correct task type. Because the same Video Tools page has multiple conversion options, such as converting to MP4, AVI, MOV, MP3, OGG, etc. If the goal is to get AAC audio, you should enter the "Convert Video to AAC" function, rather than choosing another format. After selecting the function, the software will execute subsequent batch tasks targeting AAC as the output format.
Step 2: Enter the conversion page and import the videos to be processed
After entering the "Convert Video to AAC" page, you can see the current function name clearly displayed at the top of the page. On the upper right, there are two main import entry points: "Add Files" and "Import Files from Folder". Each is suitable for different situations: if the videos are scattered in different directories, you can click "Add Files" to select consecutively; if the videos are all in one folder, clicking "Import Files from Folder" is more efficient.
The example in the screenshot has already imported 6 MP4 files. The table lists the sequence number, name, path, extension, creation time, modification time, and an actions column. The path shows these files come from the same folder, and the extension column is mp4, indicating the software has recognized the video records to be converted.
For batch processing, importing files is a very important step. After successful import, users should confirm in the list that every file appears. If there are many files, first check the record count at the bottom, then spot-check names and paths to ensure the correct folder was selected.
Step 3: Check the list and delete records that don't need processing
Before starting the conversion, it's not recommended to immediately proceed to the next step, but rather to first check the pending processing list. The screenshot bottom shows "Record Count: 6", indicating the current task will process 6 videos. Each row in the list corresponds to a video file, and the actions column has a delete icon. If a file is found not needing conversion, you can delete it in that row.
The purpose of this step is to improve the accuracy of batch conversion. The advantage of batch processing is speed, but if the import list is wrong, it will also quickly execute erroneous tasks. Therefore, it is recommended to check in the following order: first see if the record count matches expectations, then see if the file names are the target files, and finally see if the paths are from the correct directory. For videos with the same or similar names, path checking is particularly important.
You can also see a "Clear" button on the interface. If you find the imported files are generally wrong, for example, the wrong folder was selected, you can directly clear the list and then re-select via "Add Files" or "Import Files from Folder". This is more suitable for handling import errors than deleting row by row.
Step 4: Click "Next" and set the save location for AAC files
After confirming the list is correct, click the "Next" button at the bottom. The page process bar shows the second step is "Set Save Location", which means the software will ask the user to specify the output directory for the converted files. The purpose of setting the save location is to centralize the generated AAC audio files, making them easy to find and manage.
In actual office work, it's recommended not to casually place the output audio on the desktop or mix it with the original videos. A better practice is to create a clear new folder, for example, "Video to AAC Output", "Meeting Audio AAC", "Course Audio Output", etc. This way, after processing is complete, you can directly open that folder to view all AAC results, and it's convenient for whole copying, uploading, or backing up.
If the original videos still need to be kept, setting a separate output directory also prevents misoperation. Batch conversion tasks are usually not processed just once. Forming a fixed folder naming habit helps with subsequent team collaboration and material handovers.
Step 5: Enter the start processing phase and wait for batch conversion to complete
After setting the save location, the process enters the third step, "Start Processing". At this point, the software performs the conversion based on the imported records, outputting each video file as an AAC audio file. Users do not need to repeatedly select the format for each file or manually confirm exports one by one.
After processing is complete, go to the output directory to view the results. If the filenames basically correspond to the original videos and the extensions have changed to .aac, it means the batch video to AAC task is complete. For subsequent use, these AAC files can be directly used for playback, archiving, transcription, or sending to colleagues.
Frequently Asked Questions and Precautions
1. What is the difference between converting MP4 to AAC and removing video image?
In Video Tools, you can see multiple functions, among which "Remove Image from Video" is described as keeping only sound, while "Convert Video to AAC" explicitly converts video files to AAC format. This article discusses format conversion needs, i.e., ultimately getting audio files with the .aac extension. If the user's goal is to uniformly obtain AAC audio, they should select "Convert Video to AAC".
2. When there are many videos in a folder, how to import them faster?
If the videos are concentrated in one folder, prioritize using "Import Files from Folder". This reduces the operation of selecting files one by one, aligning better with the batch processing approach. After importing, checking the record count and file names via the list saves more time than manually adding files repeatedly.
3. Will the AAC filenames after conversion be difficult to correspond with the original videos?
From the post-processing effect image, it can be seen that the output AAC files use the main name of the original video, with only the extension changed to .aac. This allows, for example, Video test 22.mp4 to correspond to Video test 22.aac, making it easy for users to confirm the source. Of course, the specific results should still be subject to the files in the actual output directory.
4. Is it necessary to back up the original videos before batch conversion?
If the original videos are very important, it is recommended to keep the original files and output the AAC to a separate folder. This way, even if you later need to re-convert to another audio format or need to view the original footage, you can continue to use the original MP4 files. Batch processing emphasizes efficiency, but good file management habits are equally important.
5. Why are such tasks suitable for batch processing tools?
Because they have obvious repeatability: multiple files, the same target format, similar saving rules. If processed manually, settings need to be repeated for each file; using HeSoft Doc Batch Tool , you can establish a task list once and execute it uniformly. The more files there are, the more significant the time savings.
Summary: Hand Over Repetitive Video-to-Audio Conversion to Batch Tools
Converting multiple videos to AAC is not just a format conversion issue but more importantly, a typical office efficiency problem. For users who often need to organize video materials, extracting audio one by one consumes a lot of time and is prone to omissions, duplicate processing, or chaotic save locations. HeSoft Doc Batch Tool , through clear steps, transforms this work into a batch-executable file processing task.
According to the method in this article, users just need to enter "Video Tools", select "Convert Video to AAC", import multiple video files, check the pending records, set the save location, and start processing to batch generate corresponding AAC audio files. Whether it's course videos, meeting recordings, or source material files, as long as the goal is to extract sound and uniformly save it in AAC format, this workflow can be used to improve efficiency. It is recommended to organize the original video folder beforehand and create a separate directory for the output results, making it easier to verify and manage after conversion.