Optimized Version Transcoding Fails - Stream Map Error

Plex Media Server
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1

Server Version#: 1.23.6.4881
Player Version#: N/A
Server OS: Windows Server 2019 (1809 build 17763.2061)

I’m attempting to create optimized versions for all movies in a couple of my libraries for easy transfer over to the kid’s iPads. As such, in the optimized versions section, I’m using Plex’s “Custom” option and selecting a profile of “iOS” at 2Mbps, 720p.

For the vast majority of files, this works without issue, but there are four files for which the transcode fails.

A high level summary of these files looks like:

MOVIE1: 4K Remux, eac3 audio -> Stream Map Error
MOVIE2: 4K Encode, dca audio -> Stream Map Error
MOVIE3: 4K Remux, eac3 audio -> mov_text Error
MOVIE4: 4K Remux,  dca audio -> mov_text Error

Because the ultimate error messages are different, I thought it would be appropriate to split things into two separate posts, one for the Stream Map errors and one for the mov_text errors.

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This post is regarding the two files that fail with a Stream Map error along the lines of:

ERROR - [Transcoder] Stream map '0:21' matches no streams. To ignore this, add a trailing '?' to the map.

I’m just a rookie when it comes to looking at Plex logs, so I’m wondering if folks would be able to help troubleshoot further… if there are any additional details I can provide to help with the troubleshooting, please let me know.

Full transcode logs for MOVIE1 and MOVIE2 are attached.

If there are any additional details I can provide to help with the troubleshooting, please let me know - and thanks in advance for the help!

-Nathan

MOVIE1.txt (68.3 KB)
MOVIE2.txt (60.0 KB)

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Issue remains after upgrading to PMS 1.24.1.4931.

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If you share the Media Info XML for those problem movies, do they have a TON of subtitles? It looks that way from the logs.

I wonder if it exceeds some limit.

You might try using MKVToolNix to strip all but the necessary language subtitle and audio tracks out.

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Thanks for the suggestion, Volts.

As it turns out, I do have a MKVToolNix script for removing extra tags, but I’d stopped using it in an effort to adopt using video files in their raw form.

Running that script against these movies - and the ones from the other post - did in fact allow Plex to successfully transcode them, so your suspicion that all the different embedded subtitles exceeded a limit somewhere seems spot on.

I don’t suppose you know if there is there a different channel to use when filing a bug report? - or would I upload the .xml files here and hope that they get noticed and passed on to the dev team?

Thanks again for the help!

-Nathan

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