# 1st iteration: $" -map "" -map "" -c:v libx264 -crf 23 -c:a aac concatenated. 3) and add the parameters to the previous parameters: # renaming new file to appear as the original Otherwise we would mess up the extension.įfmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -i "$i" \ Therefore we add "tmp" in front of the filename. # ffmpeg chooses the right format according to the extension. # Since we cannot overwrite the source file we have to create a temporary file # execute command in array and store result | tail -1) # store command arguments for ffprobe query in array: codec_type for audioĬommand_audioCodec_type=(ffprobe -v quiet -select_streams a:0 -show_entries stream=codec_type -of default=nw=1:nk=1 "$i") # detect videos without audio using ffprobe # Concatenation works only if all videos contain audio # if the file contains no string of the above regexPattern it is likely a video RegexPattern="image|Image|IMAGE|bitmap|text|Text|TEXT|ocument|DOCUMENT|Microsoft|rchive|empty|directory" # parts of the file command output for many files that are not a video # Use file command to recognize the type of data contained in a file I got resulting files containing only first file, no concat. Do not use spaces in filenames! " 01_SummerVacation_2020.mkv" for i in * ffmpeg -i INPUT1 -i INPUT2 -i INPUT3 -filtercomplex amixinputs3. You can put your files into a folder, add numbers prior to their filename to determine the order of the concatenation. smartScale="scale=iw*min($targetWidth/iw\,$targetHeight/ih):ih*min($targetWidth/iw\,$targetHeight/ih), pad=$targetWidth:$targetHeight:($targetWidth-iw*min($targetWidth/iw\,$targetHeight/ih))/2:($targetHeight-ih*min($targetWidth/iw\,$targetHeight/ih))/2:color=black, setdar=ratio=16/9, setfield=tff"Įxpand ffmpegs filter_complex for every new input No matter which size or aspect ratio you have, this expression scales and pads as needed. In the future, please try to make your console output more readable: remove all that is not necessary to reproduce the issue (multi-pass, especially encoding for the same output with different streams, tuning options), and remember to put copy-pasted snippets between code-block markup (see the buttons above the text area). Slhck came up with this awesome scale expression for ffmpeg.
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