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How to merge the separated video and audio files downloaded from Bilibili into one video file?

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The project "Xlog" is currently ongoing and the subtitle is "2024". There are three methods provided for separating and merging video and audio files downloaded from Bilibili. The first method is an online tool, the second method uses a specific software, and the third method involves using ffmpeg. Each method has specific steps to follow for merging the files successfully.
  • Method 1 (Online merging)
    • Bilibili Cache Audio and Video Merge Tool
    • Upload video and audio separately
    • After uploading, click to start merging
    • Click to download the output video, it will be automatically saved to the original directory
  • Method 2 (Using [[Bilibili Cache Video Audio Merger 1.02.exe]])
    • This merger is portable, double click to run
    • Select the directory where the M4S audio and video files are located
    • Click merge to proceed
  • Method 3 (Using ffmpeg for merging)
    • Download ffmpeg from https://ffmpeg.org/download.html
    • Extract ffmpeg.exe to C:\Windows\System32\
    • Place the downloaded video and audio files in the same folder
    • In the blank space of this folder, press shift and right-click to open a PowerShell window
    • Enter the command ffmpeg -i video.m4s -i audio.m4s -codec copy output.mp4
    • Note: If the video.m4s file downloaded by a VIP member is of the highest quality, you need to open the video.m4s with EmEditor16 in hexadecimal mode, delete the "FFFFFF" at the beginning before merging.
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