[Bug 785686] New: pi: frame drops when decoding H264 1080p at 60 video
GStreamer (GNOME Bugzilla)
bugzilla at gnome.org
Tue Aug 1 12:34:56 UTC 2017
https://bugzilla.gnome.org/show_bug.cgi?id=785686
Bug ID: 785686
Summary: pi: frame drops when decoding H264 1080p at 60 video
Classification: Platform
Product: GStreamer
Version: git master
OS: Linux
Status: NEW
Severity: normal
Priority: Normal
Component: gst-omx
Assignee: gstreamer-bugs at lists.freedesktop.org
Reporter: gdesmott at gnome.org
QA Contact: gstreamer-bugs at lists.freedesktop.org
GNOME version: ---
I get a lot of frame drops when trying to decode a 60fps 1080 video (like
https://drive.google.com/file/d/0BwxFVkl63-lETTVtaVV0LUVRZ1k/view?usp=sharing )
but playing the same file using omxplayer is smooth.
I use this playback pipeline:
gst-launch-1.0 -v filesrc location=FPS_test_1080p60_L4.2.mkv ! matroskademux !
h264parse ! omxh264dec ! queue ! glimagesink
The decoder seems to be able to decode fast enough as shown with this pipeline,
so the slow down should be in glimagesink.
gst-launch-1.0 -v filesrc location=FPS_test_1080p60_L4.2.mkv ! matroskademux !
h264parse ! omxh264dec ! glupload ! "video/x-raw(memory:GLMemory)" !
fpsdisplaysink video-sink=fakesink
/GstPipeline:pipeline0/GstFPSDisplaySink:fpsdisplaysink0: last-message =
rendered: 304, dropped: 0, current: 61,41, average: 59,90
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