Live streaming - protocols, latencies & technology options Skyworth Digital Technology Broadens its RDK Content Offering through the NetRange Smart TV Portal for RDK Tip:When you use vf subtitle parameter, do not use -c copy, or it will come out with Filtergraph 'subtitles=1.mkv:si=2' was defined for video output stream 0:0 but codec copy was selected.įiltering and streamcopy cannot be used together.Major Japanese Broadcaster, MBS, Selects TVU Networks’ Transmitters and Receivers for Live Video Production # other subtitle such as #0:12(chi):subtitle:ass (the sixth subtitle)įfmpeg -i 1.mkv -map 0:v -map 0:a:3 -vf subtitles=1.mkv:si=5 3.mp4 # replace your info | (:n) can be omitted when there is only one video stream, it's used to choose video channelįfmpeg -i 1.mkv -map 0:v:0 -map 0:a:3 -vf subtitles=1.mkv 3.mp4 if you want to include the subtitle #0:6(eng):Subtitle:ass (the first subtitle).If you want directly to get the specific language audioįfmpeg -i 1.mkv -map 0:m:language:jpn 1.aac/1.mp3.So you can simply use -map 0:4 or -map 0:a:3 Complement Though the Japanese version is #0:4, there is a video channel #0:0 before it. # replace your infoįfmpeg -i 1.mkv -map 0:0 -map 0:a:3 -c:v copy 1.mp4įfmpeg -i 1.mkv -map 0:0 -map 0:4 -c:v copy -c:a copy 2.mp4Ġ:a:3 means the fourth audio. Then we can use ffmpeg -map parameter to specify our choice. Such as #0:4(jpn), that means audio in Japanese version is the fifth stream. Use this command to find out information about the video # replace your infoįfmpeg -i 1.mkv -hide_banner Second do the transformĪccroding to its result, remember the audio you would like to choose. So when we transform it to mp4, we should choose which audio channel we would like to maintain, so as the subtitle. Here comes our hero – – – FFmpeg InstructionĪs you know mkv format video can contain several audios and subtitles. So i decided to transform it into mp4 format. Then i tried some mp4 format video, everything works on well. After i mapped its media directory to the resources disk, i found when i opened the mkv format video, it came out with following error : PlaybackErrorNoCompatibleStream Recently i deployed jellyfin on my openwrt router using docker.
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