IMX6Q 双屏(LVDS+HDMI)硬解码播放视频问题

segementfault

大家好：
    目前我正在使用IMX6q，在使用qmlvideo应用双屏播放视频时发现两个屏幕中有一个屏幕播放正常，另一个屏幕播放卡顿。
top -d 1 查看系统占用：
593 root    (省略) S  40.3%  5.2   6:55.16 qmlvideo                                                                    
593 root    (省略) S  38.7%  5.2   7:00.04 qmlvideo                                                                    
   

播放时终端有一些输出：
Warning: "A lot of buffers are being dropped."
Warning: "A lot of buffers are being dropped."
Warning: "A lot of buffers are being dropped."


    系统占用率如此之高，不得不怀疑根本没有用到硬件加速，对吗？

    以上是基本现象，下面是一些我的系统情况。
    系统使用yocto构建，图形显示是基于framebuff，因此我的fb设备是这样的：
ls /dev/fb*
/dev/fb  /dev/fb0  /dev/fb1  /dev/fb2  /dev/fb3
   

     系统内核版本：4.9.88
     关于显示的Uboot启动参数：
setenv bootargs_video "video=mxcfb0:dev=ldb,LDB-XGA,if=RGB888 ldb=sin1 video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24"


另外，我还做过另外的尝试，使用gst-launch播放视频时，发现只能输出到fb0，其系统占用率只有15%左右。我无法将视频输出到另一个屏幕了。

请问一下大佬们，有没有什么方法可以双屏输出硬解码视频？
如果需要更多的信息，我将在第一时间回复。

谢谢大家了。

我知道答案 目前已有3人回答

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segementfault

另外：
# gst-inspect-1.0 | grep sink
coreelements:  fakesink: Fake Sink
coreelements:  fdsink: Filedescriptor Sink
coreelements:  filesink: File Sink
inter:  interaudiosink: Internal audio sink
inter:  intersubsink: Internal subtitle sink
inter:  intervideosink: Internal video sink
alsa:  alsasink: Audio sink (ALSA)
ossaudio:  osssink: Audio Sink (OSS)
imxipu:  imxipuvideosink: Freescale IPU video sink
multifile:  multifilesink: Multi-File Sink
multifile:  splitmuxsink: Split Muxing Bin
video4linux2:  v4l2sink: Video (video4linux2) Sink
shm:  shmsink: Shared Memory Sink
gdkpixbuf:  gdkpixbufsink: GdkPixbuf sink
pulseaudio:  pulsesink: PulseAudio Audio Sink
hls:  hlssink: HTTP Live Streaming sink
imxg2d:  imxg2dvideosink: Freescale G2D video sink
autodetect:  autovideosink: Auto video sink
autodetect:  autoaudiosink: Auto audio sink
rtspclientsink:  rtspclientsink: RTSP RECORD client
udp:  udpsink: UDP packet sender
udp:  multiudpsink: UDP packet sender
udp:  dynudpsink: UDP packet sender
tcp:  tcpclientsink: TCP client sink
tcp:  tcpserversink: TCP server sink
tcp:  multifdsink: Multi filedescriptor sink
tcp:  multisocketsink: Multi socket sink
imxpxp:  imxpxpvideosink: Freescale PxP video sink
app:  appsink: AppSink
imxeglvivsink:  imxeglvivsink: Freescale EGL video sink
imxv4l2video:  imxv4l2videosink: V4L2 CSI Video Sink
curl:  curlhttpsink: Curl http sink
curl:  curlfilesink: Curl file sink
curl:  curlftpsink: Curl ftp sink
curl:  curlsmtpsink: Curl smtp sink
fbdevsink:  fbdevsink: fbdev video sink
soup:  souphttpclientsink: HTTP client sink
debugutilsbad:  checksumsink: Checksum sink
debugutilsbad:  fpsdisplaysink: Measure and show framerate on videosink
gio:  giosink: GIO sink
gio:  giostreamsink: GIO stream sink
playback:  playsink: Player Sink
debug:  testsink: Test plugin
bluez:  a2dpsink: Bluetooth A2DP sink
bluez:  avdtpsink: Bluetooth AVDTP sink
decklink:  decklinkaudiosink: Decklink Audio Sink
decklink:  decklinkvideosink: Decklink Video Sink


我使用的gst播放视频的命令是：
gst-launch-1.0 playbin uri=file:///home/root/test.mp4 video-sink="imxipuvideosink display-slave=true"

segementfault

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