ffserver-2.2 - streaming an ASF video as Webm output with ffserver on Debian 7.5
- by Emmanuel Brunet
I'm trying to stream an IP webcam ASF live stream to a ffserver to output a webm video format. The server starts successfully but the ffserver commands used to feed the ffserver fails and generates a core dump.
Input stream
$ ffprobe http://account:password@webcam/videostream.asf
Input #0, asf, from 'http://account:password@webcam/videostream.asf':
Duration: N/A, start: 0.000000, bitrate: 32 kb/s
Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 640x480, 25 tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, 1 channels, s16p, 32 kb/s
ffserver configuration
my ffserver configuration is :
Port 8091
RTSPPort 554
BindAddress 192.168.1.62
MaxHTTPConnections 1000
MaxClients 100
MaxBandwidth 1000
CustomLog -
<Feed webcam.ffm>
File /tmp/webcam.ffm
FileMaxSize 500M
ACL allow localhost
ACL allow 192.168.0.0 192.168.255.255
</Feed>
<Stream webcam.webm> # Output stream URL definition
Feed webcam.ffm # Feed from which to receive video
Format webm
# Audio settings
AudioCodec vorbis
AudioBitRate 64 # Audio bitrate
# Video settings
VideoCodec libvpx
VideoSize 640x480 # Video resolution
VideoFrameRate 25 # Video FPS
AVOptionVideo flags +global_header # Parameters passed to encoder
# (same as ffmpeg command-line parameters)
AVOptionVideo cpu-used 0
AVOptionVideo qmin 10
AVOptionVideo qmax 42
AVOptionVideo quality good
AVOptionAudio flags +global_header
PreRoll 15
StartSendOnKey
# VideoBitRate 32 # Video bitrate
</Stream>
<Stream status.html>
Format status
# Only allow local people to get the status
ACL allow localhost
ACL allow 192.168.0.0 192.168.255.255
</Stream>
ffmpeg feed
I run the following command that fails
$ ffmpeg -i http://account:password@webcam/videostream.asf http://ffserver_ip:port/webcam.ffm
http://192.168.1.62:8091/webcam.ffm
Input #0, asf, from 'http://account:password@webcam/videostream.asf':
Duration: N/A, start: 0.000000, bitrate: 32 kb/s
Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 640x480, 25 tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, mono, s16p, 32 kb/s
[swscaler @ 0x36a80c0] deprecated pixel format used, make sure you did set range correctly
Segmentation fault
I tryed
$ ffmpeg -i http://account:password@webcam/videostream.asf -pix_fmt yuv420p http://ffserver_ip:port/webcam.ffm
But it raises the same error.
Thanks for your help
Edit
For an easy testing (I thought), I tried to publish the whole ASF stream as is, meaning connecting the ASF webcam output stream to the ffserver that outputs ASF format too.
And thus with mirrored encoding so I changed the ffserver configuration to
...
<Stream webcam.asf>
Feed webcam.ffm
Format asf
VideoFrameRate 25
VideoSize 640X480
VideoBitRate 256
VideoBufferSize 1000
VideoGopSize 30
AudioBitRate 32
StartSendOnKey
</Stream>
...
And the output is now :
Input #0, asf, from 'http://admin:alpha1237@webcam/videostream.asf':
Duration: N/A, start: 0.000000, bitrate: 32 kb/s
Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 640x480, 1k tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, mono, s16p, 32 kb/s
[swscaler @ 0x3d620c0] deprecated pixel format used, make sure you did set range correctly
Output #0, ffm, to 'http://192.168.1.62:8091/webcam.ffm':
Metadata:
creation_time : now
encoder : Lavf55.40.100
Stream #0:0: Audio: wmav2, 22050 Hz, mono, fltp, 32 kb/s
Metadata:
encoder : Lavc55.64.100 wmav2
Stream #0:1: Video: msmpeg4v3 (msmpeg4), yuv420p, 640x480, q=2-31, 256 kb/s, 1k fps, 1000k tbn, 1k tbc
Metadata:
Stream mapping:
Stream #0:1 -> #0:0 (adpcm_ima_wav -> wmav2)
Stream #0:0 -> #0:1 (mjpeg -> msmpeg4)
Press [q] to stop, [?] for help
Segmentation fault
I can't even forward the stream.
Thanks for your help again.
