[libav-bugs] [Bug 872] New: h261: Set 'still image mode off' in picture header

bugzilla at libav.org bugzilla at libav.org
Tue Jul 7 11:09:29 CEST 2015


https://bugzilla.libav.org/show_bug.cgi?id=872

            Bug ID: 872
           Summary: h261: Set 'still image mode off' in picture header
           Product: Libav
           Version: git HEAD
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: ---
         Component: libavcodec
          Assignee: bugzilla at libav.org
          Reporter: stian.selnes at gmail.com

Created attachment 546
  --> https://bugzilla.libav.org/attachment.cgi?id=546&action=edit
Patch with fix

Ref H.261 recommendation section 4.2.1.3, setting the still image flag to 1
disables still image mode. Some decoders require this in order to decode the
bitstream as normal video.

This fixes H.261 interoperability with the video conferencing product Cisco
E20.

The spec also says that reserved bits should be set to 1. The attached patch
also sets the last reserved bit of PTYPE to 1.

-- 
You are receiving this mail because:
You are watching all bug changes.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.libav.org/pipermail/libav-bugs/attachments/20150707/4a22cf46/attachment.html>


More information about the libav-bugs mailing list