![]() Dot notation : Powerpoint to WebM Transparent Video Exports slides as transparent webm or mov files for OBS, youtube, or other streaming. Lower the crf value higher the quality of the video. mkv -filter_complex " scale=960x540 scale=960x540 scale=960x540 xstack=inputs=3:layout=0_0|0_h0|w0_0" -map "" -f matroska - | ffplay - To create a 3s 640x480 video (25 fps by default): ffmpeg -f lavfi -i color=white:640x480:d=3 -f matroska - | ffplay -autoexit. You can use a format like 1920x1080 instead of hd1080. Similar with iOS version, the following animated gif image shows how it looks on Android device or emulator. Add your video files to the folder where you keep the ffmpeg.
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