Opened 7 years ago
Closed 7 years ago
Last modified 6 years ago
#13030 closed Bug Report - General (fixed)
Hardware deinterlacing does not work with recent versions of raspbian
| Reported by: | Peter Bennett | Owned by: | Peter Bennett |
|---|---|---|---|
| Priority: | minor | Milestone: | unknown |
| Component: | Ports - rPi | Version: | 0.28.1 |
| Severity: | medium | Keywords: | |
| Cc: | Ticket locked: | no |
Description (last modified by )
Sometime after raspbian version 2016-02-09, hardware deinterlacing stopped working. Withe the default setting, no deinterlacing is done. Some settings cause the fallback deinterlacer to be used.
As a work around you can select deinterlacer "Line Double(HW)".
See also https://lists.gt.net/mythtv/users/607966
Alternatively download and use a prior version of raspbian http://downloads.raspberrypi.org/raspbian/images/
Change History (5)
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I have done some testing of this bug. It looks to me like the hardware advanced and fast deinterlace may have stopped working with the release of the RPI3. I am unable to see advanced deinterlace working at all on RPI3. Earlier versions of raspbian will not boot on the RPI3.
With a small test program and lots of playing around I have found that advanced deinterlace only works with a tunneled path from decoder to deinterlacer. MythTV normally has the deinterlace as part of the video output stage. It will have to be moved to the decoding stage for the appropriate tunnel to be used. I believe this may be a bug in the raspberry pi firmware. However the deinterlace does not seem to be documented anywhere other than in forum postings, so I do not know for sure if this is intended.