[input-slave] failed to identify SAMI subtitles

The player "could not identify codec" when try SAMI subtitles track loaded via --input-slave option.

[00007f4d3e1a5b40] main decoder error: could not identify codec
[00007f4d3e1a5b40] main decoder debug: killing decoder fourcc `    '

The same file, loaded via "Add Subtitles File..." is played well.

where: commit 64a16872 (HEAD -> master, origin/master, origin/HEAD) Author: Francois Cartegnie fcvlcdev@free.fr Date: Wed Jun 19 18:11:08 2019 +0200

Added attachment:

• subt_track16.smi

input-slave is not supported for subtitles, use sub-file

bisect is not even correct.

added Severity::normal Status::invalid labels

closed

 :input-slave=file/subtitle:///D:/film/sample.srt :sub-track=0

https://forum.videolan.org/viewtopic.php?f=29&t=138120#p455017\ Input-slave could be smarter to test the media type if there is no demux, but there is supported filename extension available in the URL. :input-slave=file:///D:/film/sample.srt => srt subtitle probe first?