[Bug 647830] New: assrender: crashes with very large subtitles
GStreamer (bugzilla.gnome.org)
bugzilla at gnome.org
Thu Apr 14 20:48:08 PDT 2011
https://bugzilla.gnome.org/show_bug.cgi?id=647830
GStreamer | gst-plugins-bad | git
Summary: assrender: crashes with very large subtitles
Classification: Platform
Product: GStreamer
Version: git
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: gst-plugins-bad
AssignedTo: gstreamer-bugs at lists.freedesktop.org
ReportedBy: ds at schleef.org
QAContact: gstreamer-bugs at lists.freedesktop.org
GNOME version: ---
Created an attachment (id=185993)
View: https://bugzilla.gnome.org/attachment.cgi?id=185993
Review: https://bugzilla.gnome.org/review?bug=647830&attachment=185993
patch
assrender crashes writing outside the video image area if the subtitle image is
large enough, and the y position is odd. Example crash video at
http://www.schleef.org/~ds/ghost-crab-bad-subtitles.mkv
The blit code seems to make the assumption that the y position is even. That
is, if the x or y position is odd, it technically rendered wrong. As a
workaround, I rounded down to even. After the release, I can orcify the
blitting and fix it at the same time.
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