Those fps conversion Terminal commands seem to work properly on video-only files - an audio track seems to make the video stutter. Mkvmerge -default-duration 0:18fps -fix-bitstream-timing-information 0 original-video.mp4 -o temp-video.mkvįfmpeg -i temp-video.mkv -c:v copy slow-video.mp4 Here is an example that changes a video to 18fps: It’s a programme for capturing screenshots. Snagit is a more powerful tool that we recommend if you need something more. Method 2: Record your laptop screen with Snagit. It requires remuxing the file (mp4, m4v) to a different containter format MKV and then remuxing it back into an mp4. Method 1: Record your laptop screen with Game Bar. In the end I let the service use their routine workflow to digitize unique frames 25fps that can be slowed down to 72% for normal motion (in fact they used 71.85% because that syncs possible audio).Īnyways I could also losslessly convert 25fps H.264 to 18fps with this tip:Ĭhange frame rate without re-encoding. New versions of Windows since 2009 have included support for the key media formats, such as H.264 and AAC, that QuickTime 7 enabled. It was surprisingly hard because almost no app supports such old framesrates (DaVinci Resolve v14.2 added support for 16 and 18fps, also After Effects and Scratch support old frame rates like 18fps). Download QuickTime 7.7.9 for Windows Download QuickTime 7.7.9 for Windows Download Important: QuickTime 7 for Windows is no longer supported by Apple. You can also use the keyboard shortcut Command + Shift + N. I recently tried to make a 18fps test movie when asking the service to digitize Super 8 films. With QuickTime Player open, select File > New Screen Recording.
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