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Richard Stallman et le logiciel libre
19 octobre 2011, par
Mis à jour : Mai 2013
Langue : français
Type : Texte
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Introducing Crash Analytics for Matomo
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ffmpeg and ffserver, rc buffer underflow ?
26 avril 2017, par Dove DevicI am attempting to write a simple streaming server for a project. I have an AWS Linux machine that will be running
ffserver
. Curently, as it stands, my config file looks like the following :#Server Configs
HTTPPort 8090
HTTPBindAddress 0.0.0.0
MaxHTTPConnections 2000
MaxClients 1000
MaxBandwidth 1000
CustomLog -
#Create a Status Page
<stream>
Format status
ACL allow localhost
ACL allow 255.255.255.255 #Allow everyone to view status, for now
</stream>
#Creates feed, only allow from self
<feed>
File /tmp/feed1.ffm
FileMaxSize 50M
ACL allow 127.0.0.1
ACL allow
</feed>
#Creates stream, allow everyone
<stream>
Format mpeg
Feed feed1.ffm
VideoFrameRate 30
VideoSize 640x480
AudioSampleRate 44100
</stream>I then am capturing my Webcam and sending it up to the server using the following command :
ffmpeg -f dshow
-i video="Webcam C170":audio="Microphone (Webcam C170)"
-b:v 1400k
-maxrate 2400k
-bufsize 1200k
-ab 64k
-s 640x480
-ac 1
-ar 44100
-y http://:8090/feed1.ffmWhen I run this however, I get the following output from my console :
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, dshow, from 'video=Webcam C170:audio=Microphone (Webcam C170)':
Duration: N/A, start: 12547.408000, bitrate: N/A
Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 30 tbr, 10000k tbn, 30 tbc
Stream #0:1: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
Output #0, ffm, to ':8090/feed1.ffm':
Metadata:
creation_time : 2017-04-26 14:55:27
encoder : Lavf57.25.100
Stream #0:0: Audio: mp2, 44100 Hz, mono, s16, 64 kb/s
Metadata:
encoder : Lavc57.24.102 mp2
Stream #0:1: Video: mpeg1video, yuv420p, 640x480, q=2-31, 64 kb/s, 30 fps, 1000k tbn, 30 tbc
Metadata:
encoder : Lavc57.24.102 mpeg1video
Side data:
unknown side data type 10 (24 bytes)
Stream mapping:
Stream #0:1 -> #0:0 (pcm_s16le (native) -> mp2 (native))
Stream #0:0 -> #0:1 (rawvideo (native) -> mpeg1video (native))
Press [q] to stop, [?] for help
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflowtime=00:00:01.13 bitrate= 404.8kbits/s dup=13 drop=0 speed=2.22x
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflowtime=00:00:01.63 bitrate= 361.1kbits/s dup=13 drop=0 speed=1.61x
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflowtime=00:00:02.13 bitrate= 368.6kbits/s dup=13 drop=0 speed= 1.4x
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflowtime=00:00:02.66 bitrate= 344.1kbits/s dup=13 drop=0 speed=1.32x
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflowtime=00:00:03.16 bitrate= 331.1kbits/s dup=13 drop=0 speed=1.25x
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
frame= 117 fps= 36 q=31.0 Lsize= 156kB time=00:00:03.86 bitrate= 330.5kbits/s dup=13 drop=0 speed= 1.2x
video:118kB audio:27kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 7.659440%
Exiting normally, received signal 2.And on my viewer, I just get a black screen.
Is there something I’m missing ? Searching lead to nothing on "increasing qmax" or anything similar to what
ffmpeg
complained about. There have been questions asked here, but nothing has been done/answered.Thanks in advance
-
ffmpeg and ffserver, rc buffer underflow ?
25 février 2018, par Dove DevicI am attempting to write a simple streaming server for a project. I have an AWS Linux machine that will be running
ffserver
. Curently, as it stands, my config file looks like the following :#Server Configs
HTTPPort 8090
HTTPBindAddress 0.0.0.0
MaxHTTPConnections 2000
MaxClients 1000
MaxBandwidth 1000
CustomLog -
#Create a Status Page
<stream>
Format status
ACL allow localhost
ACL allow 255.255.255.255 #Allow everyone to view status, for now
</stream>
#Creates feed, only allow from self
<feed>
File /tmp/feed1.ffm
FileMaxSize 50M
ACL allow 127.0.0.1
ACL allow
</feed>
#Creates stream, allow everyone
<stream>
Format mpeg
Feed feed1.ffm
VideoFrameRate 30
VideoSize 640x480
AudioSampleRate 44100
</stream>I then am capturing my Webcam and sending it up to the server using the following command :
ffmpeg -f dshow
-i video="Webcam C170":audio="Microphone (Webcam C170)"
-b:v 1400k
-maxrate 2400k
-bufsize 1200k
-ab 64k
-s 640x480
-ac 1
-ar 44100
-y http://:8090/feed1.ffmWhen I run this however, I get the following output from my console :
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, dshow, from 'video=Webcam C170:audio=Microphone (Webcam C170)':
Duration: N/A, start: 12547.408000, bitrate: N/A
Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 30 tbr, 10000k tbn, 30 tbc
Stream #0:1: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
Output #0, ffm, to ':8090/feed1.ffm':
Metadata:
creation_time : 2017-04-26 14:55:27
encoder : Lavf57.25.100
Stream #0:0: Audio: mp2, 44100 Hz, mono, s16, 64 kb/s
Metadata:
encoder : Lavc57.24.102 mp2
Stream #0:1: Video: mpeg1video, yuv420p, 640x480, q=2-31, 64 kb/s, 30 fps, 1000k tbn, 30 tbc
Metadata:
encoder : Lavc57.24.102 mpeg1video
Side data:
unknown side data type 10 (24 bytes)
Stream mapping:
Stream #0:1 -> #0:0 (pcm_s16le (native) -> mp2 (native))
Stream #0:0 -> #0:1 (rawvideo (native) -> mpeg1video (native))
Press [q] to stop, [?] for help
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflowtime=00:00:01.13 bitrate= 404.8kbits/s dup=13 drop=0 speed=2.22x
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflowtime=00:00:01.63 bitrate= 361.1kbits/s dup=13 drop=0 speed=1.61x
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflowtime=00:00:02.13 bitrate= 368.6kbits/s dup=13 drop=0 speed= 1.4x
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflowtime=00:00:02.66 bitrate= 344.1kbits/s dup=13 drop=0 speed=1.32x
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflowtime=00:00:03.16 bitrate= 331.1kbits/s dup=13 drop=0 speed=1.25x
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
[mpeg1video @ 02e95180] rc buffer underflow
[mpeg1video @ 02e95180] max bitrate possibly too small or try trellis with large lmax or increase qmax
frame= 117 fps= 36 q=31.0 Lsize= 156kB time=00:00:03.86 bitrate= 330.5kbits/s dup=13 drop=0 speed= 1.2x
video:118kB audio:27kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 7.659440%
Exiting normally, received signal 2.And on my viewer, I just get a black screen.
Is there something I’m missing ? Searching lead to nothing on "increasing qmax" or anything similar to what
ffmpeg
complained about. There have been questions asked here, but nothing has been done/answered.Thanks in advance