# Unknown audio track. **URL:** \ **Category:** General Discussions\ **Created:** [January 13, 2016, 11:43am UTC](https://forums.plex.tv/t/unknown-audio-track/131273 "2016-01-13T11:43:53Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![teshiburu](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/teshiburu/32/11853_2.png) [@teshiburu](https://forums.plex.tv/u/teshiburu)\ **Post date:** [January 13, 2016, 11:43am UTC](https://forums.plex.tv/t/unknown-audio-track/131273/1 "2016-01-13T11:43:53Z")
Howdy all! I was wondering if there was a way to tag or label the audio tracks on files where it isnt present in media info? Currently I have plex set to use eng subs where the audio track isnt english, but I have some media that has audio language “unknown” Anyone have any ideas or work arounds? ---
**Author:** ![OttoKerner](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/ottokerner/32/10079_2.png) [@OttoKerner](https://forums.plex.tv/u/OttoKerner)\ **Post date:** [January 13, 2016, 4:18pm UTC](https://forums.plex.tv/t/unknown-audio-track/131273/2 "2016-01-13T16:18:37Z")
The only way is to fix your files so they include the necessary metadata. The easiest way to do this exist for MKV files with MKVtoolnix header editor. Something similar exists for mp4 files too. AVI files and all the rest of the rubble may not even support language tags. I for one don’t bother with them. If I encounter e.g. an untagged AVI file, I mux it straight to MKV and set the language tags accordingly. ---
**Author:** ![teshiburu](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/teshiburu/32/11853_2.png) [@teshiburu](https://forums.plex.tv/u/teshiburu)\ **Post date:** [January 13, 2016, 8:36pm UTC](https://forums.plex.tv/t/unknown-audio-track/131273/3 "2016-01-13T20:36:28Z")
Thanks @OttoKerner You are the ninja! I think i can use plex2csv to check language tags as well cant i? ---
**Author:** ![OttoKerner](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/ottokerner/32/10079_2.png) [@OttoKerner](https://forums.plex.tv/u/OttoKerner)\ **Post date:** [January 13, 2016, 8:43pm UTC](https://forums.plex.tv/t/unknown-audio-track/131273/4 "2016-01-13T20:43:05Z")
> @teshiburu said: > I think i can use plex2csv to check language tags as well cant i? Yep. ---
**Author:** ![teshiburu](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/teshiburu/32/11853_2.png) [@teshiburu](https://forums.plex.tv/u/teshiburu)\ **Post date:** [January 13, 2016, 8:43pm UTC](https://forums.plex.tv/t/unknown-audio-track/131273/5 "2016-01-13T20:43:54Z")
Nice just to build some mkvtoolnix remux script now 😛 ---
**Author:** ![OttoKerner](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/ottokerner/32/10079_2.png) [@OttoKerner](https://forums.plex.tv/u/OttoKerner)\ **Post date:** [January 13, 2016, 8:52pm UTC](https://forums.plex.tv/t/unknown-audio-track/131273/6 "2016-01-13T20:52:08Z")
I’d avoid remuxing mp4 into mkv, though. mp4 is supported by far more devices in [direct-play](https://support.plex.tv/hc/en-us/articles/201566396-How-are-Direct-Play-Direct-Stream-and-Transcoding-different- "direct-play") mode than MKV is. ---
**Author:** ![teshiburu](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/teshiburu/32/11853_2.png) [@teshiburu](https://forums.plex.tv/u/teshiburu)\ **Post date:** [January 14, 2016, 8:44am UTC](https://forums.plex.tv/t/unknown-audio-track/131273/7 "2016-01-14T08:44:35Z")
Yeah ill leave mp4 as mp4 and remux mkv and avis ---
**Author:** ![teshiburu](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/teshiburu/32/11853_2.png) [@teshiburu](https://forums.plex.tv/u/teshiburu)\ **Post date:** [January 14, 2016, 11:30am UTC](https://forums.plex.tv/t/unknown-audio-track/131273/8 "2016-01-14T11:30:17Z")
Ignore that - sorted it 🙂 ---
**Author:** ![OttoKerner](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/ottokerner/32/10079_2.png) [@OttoKerner](https://forums.plex.tv/u/OttoKerner)\ **Post date:** [January 14, 2016, 11:41am UTC](https://forums.plex.tv/t/unknown-audio-track/131273/9 "2016-01-14T11:41:08Z")
Maybe ‘access rights’. The script might not be running as user ‘plex’, so there is a possible difference. Verify whether this is really a mkv. mediainfo etc. Some 3rd party tools write very weird MKVs. It is possible that mkvpropedit can’t find the header. Try to remux these files instead. ---
**Author:** ![teshiburu](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/teshiburu/32/11853_2.png) [@teshiburu](https://forums.plex.tv/u/teshiburu)\ **Post date:** [January 14, 2016, 11:47am UTC](https://forums.plex.tv/t/unknown-audio-track/131273/10 "2016-01-14T11:47:03Z")
Sorted thanks @OttoKerner the export from plex2csv had on a few files turned /Season 1/ into /Season1/ so yeah - the file did not exist 🙂 ---
**Author:** ![OttoKerner](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/ottokerner/32/10079_2.png) [@OttoKerner](https://forums.plex.tv/u/OttoKerner)\ **Post date:** [January 14, 2016, 11:58am UTC](https://forums.plex.tv/t/unknown-audio-track/131273/11 "2016-01-14T11:58:36Z")
> @teshiburu said: > Sorted thanks @OttoKerner the export from plex2csv had on a few files turned /Season 1/ into /Season1/ so yeah - the file did not exist 🙂 We’ve all been there… :)) ---
**Author:** ![teshiburu](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/teshiburu/32/11853_2.png) [@teshiburu](https://forums.plex.tv/u/teshiburu)\ **Post date:** [January 14, 2016, 12:13pm UTC](https://forums.plex.tv/t/unknown-audio-track/131273/12 "2016-01-14T12:13:10Z")
I have one more issue now @OttoKerner this is related to mp4 files I have this file that is detected as unknown audio again ![](https://cdn.pbrd.co/images/MPoEORl.png) However, i have modified the lang track for this file using mp4box MP4Box -lang 1=eng “Z:\TV Series\The 100\Season 1\The.100.-.S01E01.-.Pilot.HDTV-720p.x264.AAC.-Sonarr.mp4” and rescanned the library, and plex can tell its English in the info ![](https://cdn.pbrd.co/images/MPtdXqg.png) Is there any reason why plex cant tell that this is english? ---
**Author:** ![teshiburu](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/teshiburu/32/11853_2.png) [@teshiburu](https://forums.plex.tv/u/teshiburu)\ **Post date:** [January 14, 2016, 12:54pm UTC](https://forums.plex.tv/t/unknown-audio-track/131273/13 "2016-01-14T12:54:00Z")
Huzzah worked that out - audio is track 2 not track 1 🙂 ---
**Author:** ![dwtk](https://avatars.discourse-cdn.com/v4/letter/d/977dab/32.png) [@dwtk](https://forums.plex.tv/u/dwtk)\ **Post date:** [March 30, 2016, 10:49pm UTC](https://forums.plex.tv/t/unknown-audio-track/131273/14 "2016-03-30T22:49:25Z")
Can’t we have a language type of unknown , that way people wanting the subs not to be set can just select this as second language in agent. And poof issue will go away . ---
**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\ **Post date:** [January 7, 2020, 8:51pm UTC](https://forums.plex.tv/t/unknown-audio-track/131273/15 "2020-01-07T20:51:59Z")