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Add a 5.1 DTS or AC3 audio stream from a 7.1 DTS-HD stream using ffmpeg to allow directplay
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| #Downconvert 7.1 DTS-HD to DTS 5.1: | |
| ffmpeg -i in.mkv -strict -2 -map 0:a:0 -c dts -af "channelmap=channel_layout=5.1" dts.mkv | |
| #Downconvert 7.1 DTS-HD to AC3 5.1: | |
| ffmpeg -i in.mkv -map 0:a:0 -c ac3 -ac 6 -ab 640k ac3.mkv | |
| #Add downconverted audio streams via ffmpeg: | |
| ffmpeg -i in.mkv -i dts.mkv -i ac3.mkv -map 0:v -c:v copy -map 0:a -c:a copy -map 1:a -c:a copy -map 2:a -c:a copy -map 0:s -c:s copy out.mkv | |
| #Or use MKVToolNix |
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