jweob
Posts: 31
Joined: Sun Jul 15, 2012 1:56 pm

Mplayer slow motion

Sun Jul 21, 2013 2:27 pm

I'm trying to stream video from my camera board equipped pi to my windows PC. I've used the mplayer/netcat solution described on http://www.raspberrypi.org/archives/tag/camera-board but am having problems. Either the video does not start (just keeps saying "Cache empty, consider increasing cache and/or -cache-min [performance issue]") or the video stream starts but in slow motion. I've got it set up with the camera looking at my watch and in the mplayer window the second hand only ticks every 5 seconds

I would have thought it would be problems with the network speed but I'm using wireless-n and can stream HD video without problems. I'm only trying to do 10 frames per second of 320x240. Any ideas on what I can try?

My pi is running headless using SSH, only accessories plugged in are a Wipi adaptor and the pi camera.

The command I'm using to start the stream on the pi is:

Code: Select all

sudo raspivid  -w 320 -h 240 -t 999999 --hflip -o - | nc 192.168.0.103 5001
The command I'm using to receive the stream on my windows pc is:

Code: Select all

c:\NetCat\nc64.exe -L -p 5001 | c:\Mplayer\mplayer.exe -cache 1024 -fps 10 -
When I connect the output I get on the windows pc before the mplayer window opens is:

Code: Select all

C:\Mplayer>c:\NetCat\nc64.exe -L -p 5001   | c:\Mplayer\mplayer.exe -cache 1024
-fps 10 -
MPlayer sherpya-r36349+gb24f15c-4.6 (C) 2000-2013 MPlayer Team

Playing -.
Reading from stdin...
Cache fill: 19.34% (202752 bytes)

libavformat version 55.9.100 (internal)
Cache empty, consider increasing -cache and/or -cache-min. [performance issue]
Cache empty, consider increasing -cache and/or -cache-min. [performance issue]
Cache empty, consider increasing -cache and/or -cache-min. [performance issue]
H264-ES file format detected.
Load subtitles in ./
Load subtitles in c:/Mplayer/mplayer/sub/
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 55.16.100 (internal)
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
==========================================================================
Audio: no sound
FPS forced to be 10.000  (ftime: 0.100).
Starting playback...
Movie-Aspect is undefined - no prescaling applied.
VO: [directx] 320x240 => 320x240 Planar YV12
Thanks!

Rusty14
Posts: 5
Joined: Fri Sep 13, 2013 10:51 pm

Re: Mplayer slow motion

Wed Oct 02, 2013 1:15 am

Hey there,
I am having the exact same problem. did you ever have any luck fixing it??

Rusty14
Posts: 5
Joined: Fri Sep 13, 2013 10:51 pm

Re: Mplayer slow motion

Wed Oct 02, 2013 1:20 am

Hey there,
I am having the exact same problem. did you ever have any luck fixing it??

Return to “Camera board”