![]() ![]() Processing what you mapped is done sequentially, -map 0:0 is the video stream and was my first map so once I had finished mapping the first action was going to be run on this video stream. Keeping only the video, English audio and subtitles however encode the video (fast crf 25): ffmpeg -i inputfile.mkv -map 0:0 -map 0:1 -map 0:2 -c:v libx264 -preset fast -crf 25 -c:a copy -c:s copy english-output.mp4 ffmpeg -i Funny.mkv -an Funnymuted.mkv Mute Audio Resize Video Resolution with FFmpeg Video files can be resized. Converting video files to different formats It’s possible to convert media files between different formats with FFmpeg. Getting audio or video file information To see the details of a media file, run: ffmpeg -i video.mp4 2. This gives the ability to mute audio of the video file. You can find some of the most used FFmpeg codes below. Making a French only audio copy with: ffmpeg -i inputfile.mkv -map 0:3 french-audio.mp3 Mute or Remove Audio From Video with FFmpeg As we see previous example audio file is stored as separate stream. So, you could select the 2nd audio track of the video by saying -map 0:a:1 because the numbering starts at 0. The general syntax of the map command is -map inputfileindex:streamtypespecifier:streamindex. For removing a specific audio track using FFmpeg, you can always use the map command. #Ffmpeg remove audio how to#Ī simple FFmpeg map example to create an audio only and then a video only copy from the input: ffmpeg -i inputfile.mkv -map 0:1 audio.mp3 -map 0:0 video.mp4īecause Stream #0:1 is the audio stream and #0:0 is the video stream. How to Remove a Specific Audio Track using FFmpeg. You will see (depending on your input file) multiple streams, they look like: Stream #0:0: Video: hevc. Run ffmpeg -i inputfile to see all the information about the media. Video usually has different streams for quality when it is a live stream. Streams means video, audio, subtitles, attachments and data within the file this is rather complex on movie files where there could be multiple audio streams for different languages and the same for subtitles. ![]() Map in FFmpeg can be best understood as selecting streams within a file you want to encode, keep or remove when creating an output. ![]()
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