Hi,
I'm trying to stream a webcam from windows to ffserver on linux and then
play the RTP stream on linux. I'm having problems with pixel format I
think, my camera seems to only support yuyv422 and so its sending this
to ffserver but I don't think RTP can support the format since ffserver
keeps saying "Only 1x1 chroma blocks are supported. Aborted" whenever I
run ffplay for the stream.
I've tried adding -pix_fmt yuv420p to ffmpeg but it doesn't change
anything, is there anything obvious I'm missing?
As an experiment I tried running ffmpeg -f lavfi -i
testsrc=size=640x480:rate=25 http://192.168.0.18:8090/feed1.ffm which
then uses yuvj444p and ffserver says "Unsupported pixel format" but I
can't seem to get the format to change.
Thanks!
FFserver.conf:
HTTPPort 8090
HTTPBindAddress 0.0.0.0
RTSPPort 8091
RTSPBindAddress 0.0.0.0
MaxHTTPConnections 2000
MaxClients 1000
MaxBandwidth 1000
<Feed feed1.ffm>
File /tmp/feed1.ffm
FileMaxSize 1M
</Feed>
<Stream cam.mjpg>
Feed feed1.ffm
Format rtp
VideoFrameRate 25
VideoSize 640x480
VideoCodec mjpeg
NoAudio
</Stream>
<Stream stat.html>
Format status
ACL allow localhost
ACL allow 192.168.0.0 192.168.255.255
</Stream>
ffmpeg command:
ffmpeg -f dshow -i video="USB2.0 Camera" http://192.168.0.18:8090/feed1.ffm
ffmpeg version N-76479-gc878082 Copyright (c) 2000-2015 the FFmpeg
developers
built with gcc 5.2.0 (GCC)
...
Input #0, dshow, from 'video=USB2.0 Camera':
Duration: N/A, start: 17930.120000, bitrate: N/A
Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480,
30 tbr, 10000k tbn, 30 tbc
[swscaler @ 00000008c0a5afe0] deprecated pixel format used, make sure
you did set range correctly
Output #0, ffm, to 'http://192.168.0.18:8090/feed1.ffm':
Metadata:
creation_time : 2015-11-08 20:32:06
encoder : Lavf57.14.100
Stream #0:0: Video: mjpeg, yuvj422p(pc), 640x480, q=2-31, 64 kb/s,
30 fps, 1000k tbn, 25 tbc
Metadata:
encoder : Lavc57.14.100 mjpeg
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> mjpeg (native))
Press [q] to stop, [?] for help
[mjpeg @ 00000008c0a57660] rc buffer underflow
Last message repeated 16 times
[mjpeg @ 00000008c0a57660] rc buffer underflowe=00:00:00.68
bitrate=2939.5kbits/s dup=11 drop=0
list-options:
ffmpeg -list_options true -f dshow -i video="USB2.0 Camera"
ffmpeg version N-76479-gc878082 Copyright (c) 2000-2015 the FFmpeg
developers
built with gcc 5.2.0 (GCC)
...
[dshow @ 00000049c119ac40] DirectShow video device options (from video
devices)
[dshow @ 00000049c119ac40] Pin "Capture" (alternative pin name "0")
[dshow @ 00000049c119ac40] pixel_format=yuyv422 min s=640x480 fps=30
max s=640x480 fps=30
[dshow @ 00000049c119ac40] pixel_format=yuyv422 min s=640x480 fps=30
max s=640x480 fps=30
[dshow @ 00000049c119ac40] pixel_format=yuyv422 min s=160x120 fps=30
max s=160x120 fps=30
[dshow @ 00000049c119ac40] pixel_format=yuyv422 min s=160x120 fps=30
max s=160x120 fps=30
[dshow @ 00000049c119ac40] pixel_format=yuyv422 min s=320x240 fps=30
max s=320x240 fps=30
[dshow @ 00000049c119ac40] pixel_format=yuyv422 min s=320x240 fps=30
max s=320x240 fps=30
[dshow @ 00000049c119ac40] pixel_format=yuyv422 min s=176x144 fps=30
max s=176x144 fps=30
[dshow @ 00000049c119ac40] pixel_format=yuyv422 min s=176x144 fps=30
max s=176x144 fps=30
[dshow @ 00000049c119ac40] pixel_format=yuyv422 min s=352x288 fps=30
max s=352x288 fps=30
[dshow @ 00000049c119ac40] pixel_format=yuyv422 min s=352x288 fps=30
max s=352x288 fps=30
video=USB2.0 Camera: Immediate exit requested
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