So silent audio can be anycodings_ffmpeg added as in this example: ffmpeg -i 1.mp4 -i 2.mp4 -i 3.mp4 -t 0.1 -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=48000 -filter_complex \ In other words, you anycodings_ffmpeg can't concat a video without audio to a anycodings_ffmpeg video with audio. This may be anycodings_ffmpeg required because all segments to be anycodings_ffmpeg concatenated must have the same number anycodings_ffmpeg and type of streams. The anullsrc filter is used to provide anycodings_ffmpeg silent dummy audio if one of your inputs anycodings_ffmpeg does not contain audio.
Ffmpeg concat 2 mp4 videos how to#
With watermark ffmpeg -i 1.mp4 -i 2.mp4 -i 3.mp4 -i logo.png -filter_complex \Ĭoncat=n=3:v=1:a=1 overlay=W-w-5:H-h-5" \įor more info see overlay filter anycodings_ffmpeg documentation and How to add and anycodings_ffmpeg position watermark with ffmpeg? Adding silent dummy audio for an input that does not have audio ffmpeg -i 1.mp4 -i 2.mp4 -i 3.mp4 -filter_complex \Īformat=sample_rates=48000:channel_layouts=stereo
Same as above but also processes audio to be stereo with 48000 sample rateĪdded the aformat (sample rate and anycodings_ffmpeg channel layout) filter. map "" -map "" -c:v libx264 -c:a aac -movflags +faststart output.mp4 ffmpeg -i 1.mp4 -i 2.mp4 -i 3.mp4 -filter_complex \ Using scale (width x height / anycodings_ffmpeg resolution), setsar (aspect ratio), fps anycodings_ffmpeg (frame rate), format (chroma anycodings_ffmpeg subsampling), and concat anycodings_ffmpeg (concatenation/joining) filters. Since I'm assuming your inputs are going anycodings_ffmpeg to be arbitrary I recommend using the anycodings_ffmpeg concat filter instead of the concat anycodings_ffmpeg demuxer because you're going to need to anycodings_ffmpeg perform filtering anyway to conform anycodings_ffmpeg everything into a common set of anycodings_ffmpeg parameters and you can do everything in anycodings_ffmpeg one command.
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