[FFmpeg-trac] #3372(ffserver:new): Streaming in webm format gets stuck in the WAIT_FEED state

[FFmpeg]

#3372: Streaming in webm format gets stuck in the WAIT_FEED state
-------------------------------------+-------------------------------------
             Reporter:  alexpirine   |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  ffserver     |                  Version:
             Keywords:               |  unspecified
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------
 Summary of the bug:
 How to reproduce:
 {{{
 $ cat ffserver.conf
 Port 8090
 BindAddress 0.0.0.0
 MaxClients 4
 MaxBandwidth 50000
 NoDaemon

 <Feed webcam.ffm>
   File /tmp/webcam.ffm
   FileMaxSize 5M
 </Feed>

 #<Stream webcam.mjpeg>
 #  Feed webcam.ffm
 #  Format mjpeg
 #  VideoSize 640x480
 #  VideoFrameRate 25
 #  VideoBitRate 500
 #  VideoIntraOnly
 #  Noaudio
 #  Strict -1
 #</Stream>

 <Stream webcam.webm>
   Feed webcam.ffm
   Format webm
   VideoCodec libvpx
   VideoSize 640x480
   VideoFrameRate 25
   VideoBitRate 512
   VideoIntraOnly
   AVOptionVideo flags +global_header
   AVOptionAudio flags +global_header
   AVOptionVideo cpu-used 5
   PreRoll 15
   StartSendOnKey
   Noaudio
   Strict -1
 </Stream>

 <Stream status.html>            # Server status URL
   Format status
   # Only allow local people to get the status
   ACL allow localhost
   ACL allow 192.168.0.0 192.168.255.255
 </Stream>

 $ ffserver -v verbose -f ~/ffserver.conf
 avserver version 0.8.9-6:0.8.9-0ubuntu0.13.04.1, Copyright (c) 2000-2013
 the Libav developers
   built on Nov  9 2013 19:09:48 with gcc 4.7.3
   configuration: --arch=amd64 --enable-pthreads --enable-runtime-cpudetect
 --extra-version='6:0.8.9-0ubuntu0.13.04.1' --libdir=/usr/lib/x86_64-linux-
 gnu --prefix=/usr --enable-bzlib --enable-libdc1394 --enable-libfreetype
 --enable-gnutls --enable-libgsm --enable-libpulse --enable-libschroedinger
 --enable-libspeex --enable-libtheora --enable-vaapi --enable-vdpau
 --enable-libvorbis --enable-libvpx --enable-zlib --enable-gpl --enable-
 postproc --enable-swscale --enable-libcdio --enable-x11grab
 --shlibdir=/usr/lib/x86_64-linux-gnu --enable-shared --disable-static
   libavutil    51. 22. 1 / 51. 22. 1
   libavcodec   53. 35. 0 / 53. 35. 0
   libavformat  53. 21. 1 / 53. 21. 1
   libavdevice  53.  2. 0 / 53.  2. 0
   libavfilter   2. 15. 0 /  2. 15. 0
   libswscale    2.  1. 0 /  2.  1. 0
   libpostproc  52.  0. 0 / 52.  0. 0

 $ avconv -f video4linux2 -i /dev/video0 -vcodec libvpx -b 512k -deadline
 realtime -flags +global_header -cpu-used 6
 http://192.168.1.2:8090/webcam.ffm
 avconv version 0.8.9-6:0.8.9-0ubuntu0.13.04.1, Copyright (c) 2000-2013 the
 Libav developers
   built on Nov  9 2013 19:09:48 with gcc 4.7.3
 [video4linux2 @ 0x24c5a00] Estimating duration from bitrate, this may be
 inaccurate
 Input #0, video4linux2, from '/dev/video0':
   Duration: N/A, start: 7513392.829316, bitrate: 147456 kb/s
     Stream #0.0: Video: rawvideo, yuyv422, 640x480, 147456 kb/s, 30 tbr,
 1000k tbn, 30 tbc
 Incompatible pixel format 'yuyv422' for codec 'libvpx', auto-selecting
 format 'yuv420p'
 [buffer @ 0x24c7780] w:640 h:480 pixfmt:yuyv422
 [avsink @ 0x24c80a0] auto-inserting filter 'auto-inserted scaler 0'
 between the filter 'src' and the filter 'out'
 [scale @ 0x24cbda0] w:640 h:480 fmt:yuyv422 -> w:640 h:480 fmt:yuv420p
 flags:0x4
 [libvpx @ 0x24c6a40] v1.1.0
 Output #0, ffm, to 'http://192.168.1.2:8090/webcam.ffm':
   Metadata:
     encoder         : Lavf53.21.1
     Stream #0.0: Video: libvpx, yuv420p, 640x480, q=-1--1, 512 kb/s, 1000k
 tbn, 30 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo -> libvpx)
 Press ctrl-c to stop encoding
 frame= 2437 fps= 30 q=0.0 size=    5296kB time=81.23 bitrate= 534.1kbits/s
 dup=30 drop=0

 $ ffplay http://192.168.1.2:8090/webcam.webm
 avplay version 0.8.9-6:0.8.9-0ubuntu0.13.04.1, Copyright (c) 2003-2013 the
 Libav developers
   built on Nov  9 2013 19:09:48 with gcc 4.7.3

 -> status.html:

 Connection Status

 Number of connections: 3 / 4
 Bandwidth in use: 512k / 50000k
 #       File    IP      Proto   State   Target bits/sec Actual bits/sec
 Bytes transferred
 1       status.html     192.168.1.42    HTTP/1.1        HTTP_WAIT_REQUEST
 0       0       0
 2       webcam.webm     192.168.1.2     HTTP/1.1        WAIT_FEED
 512k    0       494
 3       webcam.ffm(input)       192.168.1.2     HTTP/1.1
 RECEIVE_DATA    512k    545k    2121k

 }}}

 If I use ffmpeg to write into a file, the file is readable in VLC; if I
 change format to mjpeg, the stream is readable through ffserver; so I
 think there is an issue with ffserver/webm.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3372>
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