improved video frame rate detection to be more tolerant to inaccurate values

2 files changed, 6 insertions, 2 deletions

diff --git a/HISTORY b/HISTORY
index 0bd6fc9..657e8da 100644
--- a/HISTORY
+++ b/HISTORY
@@ -2,6 +2,7 @@ VDR Plugin 'rpihddevice' Revision History
 -----------------------------------------
 
 - fixed:
+  - improved video frame rate detection to be more tolerant to inaccurate values
   - adapted cOvgRawOsd::Flush() to new cOsd::RenderPixmaps() of vdr-2.1.10
   - fixed calculation of string height (reported by Klaus Schmidinger)
   - additionally set number of in/out channels when setting up audio resampler
diff --git a/omx.c b/omx.c
index 5bc4619..1bd1ded 100644
--- a/omx.c
+++ b/omx.c
@@ -239,8 +239,11 @@ void cOmx::HandlePortSettingsChanged(unsigned int portId)
 		m_videoFormat.width = portdef.format.video.nFrameWidth;
 		m_videoFormat.height = portdef.format.video.nFrameHeight;
 		m_videoFormat.interlaced = interlace.eMode != OMX_InterlaceProgressive;
-		m_videoFormat.frameRate =
-				ALIGN_UP(portdef.format.video.xFramerate, 1 << 16) >> 16;
+
+		// discard 4 least significant bits, since there might be some deviation
+		// due to jitter in time stamps
+		m_videoFormat.frameRate = ALIGN_UP(
+				portdef.format.video.xFramerate & 0xfffffff0, 1 << 16) >> 16;
 
 		// workaround for progressive streams detected as interlaced video by
 		// the decoder due to missing SEI parsing