Flipping multiple AVI files together allows you to correct the orientation of upside-down or mirrored videos simultaneously. Because AVI is a heavy container format, batch processing saves time.
A breakdown of the best step-by-step methods using desktop and online tools includes the following options.
Method 1: Desktop Software (VideoProc Converter AI / CapCut Desktop)
Dedicated desktop software offers the fastest rendering times for batch-processing large AVI files without losing video quality.
Download and Install: Open your desktop program (such as VideoProc Converter AI or CapCut Desktop).
Import Media: Click Add Video or drag and drop multiple AVI files into the interface.
Select All Files: Check the boxes next to all imported clips to apply batch editing.
Apply Flip: Locate the Toolbox or Edit tab, select Rotate/Flip, and click horizontal or vertical flip.
Merge or Export: Ensure “Merge” is unticked if you want separate files, or ticked to combine them. Click Run or Export to save. Method 2: Online Tools (Clideo / VEED.io)
If you prefer not to install software, online platforms let you flip files directly from your browser.
Upload Files: Go to an online editor like Clideo Merge Tool or VEED.IO AVI Joiner.
Load Videos: Click Choose Files and hold the Shift key to select multiple AVI files.
Flip the Orientation: Select the video clips on the timeline and use the Flip/Mirror button in the settings pane.
Choose Output Format: Set your preferred target format (keeping AVI or converting to a compressed format like MP4).
Download: Click Export, wait for processing, and click Download to save the files. Method 3: VLC Media Player (Batch Command Line)
While VLC can flip a single playing video via its Effects menu, batch-flipping multiple files requires using its command line function to process them without opening the GUI loop.
Locate VLC Path: Right-click your VLC shortcut, select Properties, and copy the folder destination path from the “Target” field.
Open Command Prompt: Type cmd in your Windows search bar to open the terminal.
Run Batch Command: Paste the target directory path followed by the transform command string:vlc.exe –video-filter=transform –transform-type=hflip [input_files] –sout
Execute: Press Enter to let VLC process and save the inverted files into your designated directory. How to Merge Multiple Videos with VLC Media Player
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