Our 'Smart' TV has an integrated Mp4 player, and it will play MP3 or AAC sound tracks. So could be someone else with the same issue as mine will also end up here and this might help out someone else at some time. I found this thread by asking Google a highly related but slightly different question - which I now have the answer to. FFmpeg's Main Options: Scroll down from this link to see the usage and options available for FFmpeg's disposition options.Selecting streams with the -map option: Beautifully written FFmpeg trac guide to using FFmpeg's map options.This worked well on a test file produced on my system and should work well on yours as well. Useful if this has been set on another, input audio stream. -disposition:a:0 default: This sets our required audio stream (English) as the default.-c copy: Copy the video, audio and subtitle streams with no re-encoding.-map 0:s: Select all of the subtitle files.English is of course specified first and is stream 2. The final digit of each 'set' selects from the 4 audio streams with '0' being the first stream and '3' being the final audio stream. -map 0:a:1 -map 0:a:0 -map 0:a:2 -map 0:a:3: The audio streams are individually placed.-map 0:v:0: The first (and only) video stream is selected.Best syntax for this is arguably: ffmpeg -i input.mkv -map 0:v:0 \ The ordering of the audio streams can be accomplished using FFmpeg's map and disposition options. Stream #0:4(jpn): Audio: opus, 48000 Hz, stereo, fltp Stream #0:3(eng): Audio: opus, 48000 Hz, stereo, fltp Stream #0:2(spa): Audio: opus, 48000 Hz, stereo, fltp Stream #0:1(por): Audio: opus, 48000 Hz, stereo, fltp (default) _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_WRITING_APP-eng: mkvmerge v45.0.0 ('Heaven') 64-bit The information about the video is as follows: Input #0, matroska,webm, from 'input.mkv':Įncoder : libebml v1.3.10 libmatroska v1.5.2ĭuration: 00:26:36.85, start: -0.007000, bitrate: 2157 kb/s The video contains 4 Audio Tracks: Portuguese (Default), Spanish, English and Japanese. I want to change the default audio track from Portuguese to English in the file input.mkv.
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