[Bug 740784] New: subparse: fails to detect UTF-8 encoding

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=740784
  GStreamer | gst-plugins-base | 1.4.4

           Summary: subparse: fails to detect UTF-8 encoding
    Classification: Platform
           Product: GStreamer
           Version: 1.4.4
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: athoik at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=291594)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=291594)
sample srt with bom and without bom

Subparse fails to detect UTF-8 encoding when file does not contain BOM.

INFO subparse gstsubparse.c:465:convert_encoding:<subparse0> invalid UTF-8!

But when we set GST_SUBTITLE_ENCODING to UTF-8 subtitles displayed correctly.

INFO subparse gstsubparse.c:465:convert_encoding:<subparse0> invalid UTF-8!
LOG subparse gstsubparse.c:495:convert_encoding:<subparse0> successfully
converted 4096 characters from UTF-8 to UTF-8

The exacly same subtitle with BOM (only BOM header is the difference between
those files) has no issues.

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