Avi - Swap

Avi - Swap

...then you cannot simply swap streams. You must re-encode. In those cases, use a proper video editor (like Shotcut, DaVinci Resolve) and accept the time/quality trade-off.

ffmpeg -i input.avi -i new_audio.mp3 -map 0:0 -map 1:0 -c:v copy -c:a aac output.avi swap avi

Changing the file container without re-encoding the video stream, which preserves 100% of the original quality. Why Swap Your AVI Files? ffmpeg -i input

In the world of digital video, the term “Swap AVI” might initially sound like a quick file renaming trick. However, a useful understanding goes much deeper. At its core, “Swap AVI” refers to the process of replacing one audio stream or video track within an AVI (Audio Video Interleave) container with another, without re-encoding the entire file. This seemingly simple operation is a powerhouse tool for video editors, archivists, and everyday users looking to fix synchronization issues, upgrade audio quality, or combine the best elements of multiple sources. However, a useful understanding goes much deeper

If you want to swap the AVI container to MKV or MP4 without losing quality, look for tools that support "Copy" mode . This simply moves the video data into a new "box" (container) without changing the data itself. This takes seconds rather than minutes. Conclusion