CentOS Streaming Audio and Video Without Sound Card ffmpeg

[jpowers718]

I have a VPS which is ran on a OpenVZ, which obviously doesn't have any sound cards installed, I know this is possible because I've seen it done before but the person refuses to tell me how it's done not to interfere with his business.

I can't do commands such as

Code:
[root.website tmp]# modprobe snd-dummy
WARNING: Error inserting snd (/lib/modules/2.6.32-042stab083.2/updates/alsa/acor e/snd.ko): Operation not permitted
WARNING: Error inserting snd_timer (/lib/modules/2.6.32-042stab083.2/updates/als a/acore/snd-timer.ko): Operation not permitted
WARNING: Error inserting snd_pcm (/lib/modules/2.6.32-042stab083.2/updates/alsa/ acore/snd-pcm.ko): Operation not permitted
FATAL: Error inserting snd_dummy (/lib/modules/2.6.32-042stab083.2/updates/alsa/ drivers/snd-dummy.ko): Operation not permitted
So I can't load up the snd-dummy sound card driver.


Code:
[root.website tmp]# aplay -l
aplay: device_list:256: no soundcards found...
Code:
[root.website tmp]# aplay -L
null
Discard all samples (playback) or generate zero samples (capture)



But I did manage to install pavucontrol in my GNOME desktop when I run a application which uses SDL DirectMedia Layer and I see the slider in the Playback moving so sound is coming in without any sound card but it's redirected to <auto_null.monitor>

Maybe I don't even need to use the sound server PulseAudio and just redirect SDL DirectMedia Layer straight into ffmpeg somehow if that is possible, all I care about is that one SDL DirectMedia Layer, I don't need other System sounds/Mics etc..

Here is what happens when I run this command for PulseAudio

Code:
[remove.removed ~]$ pacmd list-source-outputs
Welcome to PulseAudio! Use "help" for usage information.
>>> 2 source outputs(s) available.
index: 0
driver: <protocol-native.c>
flags: DONT_MOVE
state: RUNNING
source: 0 <auto_null.monitor>
current latency: 3.08 ms
requested latency: 20.00 ms
sample spec: float32le 1ch 25Hz
channel map: mono
Mono
resample method: peaks
owner module: 6
client: 4 <PulseAudio Volume Control>
properties:
media.name = "Peak detect"
application.name = "PulseAudio Volume Control"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "16"
application.id = "org.PulseAudio.pavucontrol"
application.icon_name = "audio-card"
application.version = "0.9.10"
application.process.id = "997"
application.process.user = "removed_for_ubuntuforums(wasn't root)"
application.process.host = "removed_for_ubuntuforums"
application.process.binary = "pavucontrol"
window.x11.display = ":1.0"
application.language = "en_US.UTF-8"
application.process.machine_id = "27be3273f5d5332051ccdc3100000002"
application.process.session_id = "27be3273f5d5332051ccdc3100000002-1394085585.776225-694791372"
module-stream-restore.id = "source-output-by-application-idrg.PulseAudio.pavucontrol"
index: 1
driver: <protocol-native.c>
flags: DONT_MOVE
state: RUNNING
source: 0 <auto_null.monitor>
current latency: 3.11 ms
requested latency: 20.00 ms
sample spec: float32le 1ch 25Hz
channel map: mono
Mono
resample method: peaks
owner module: 6
client: 4 <PulseAudio Volume Control>
direct on input: 2
properties:
media.name = "Peak detect"
application.name = "PulseAudio Volume Control"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "16"
application.id = "org.PulseAudio.pavucontrol"
application.icon_name = "audio-card"
application.version = "0.9.10"
application.process.id = "997"
application.process.user = "removed_for_ubuntuforums(wasn't root)"
application.process.host = "removed_for_ubuntuforums"
application.process.binary = "pavucontrol"
window.x11.display = ":1.0"
application.language = "en_US.UTF-8"
application.process.machine_id = "27be3273f5d5332051ccdc3100000002"
application.process.session_id = "27be3273f5d5332051ccdc3100000002-1394085585.776225-694791372"
module-stream-restore.id = "source-output-by-application-idrg.PulseAudio.pavucontrol"
Here is the PulseAudio sinks command

Code:
>>> [removed.removed~]$ pacmd list-sinks
Welcome to PulseAudio! Use "help" for usage information.
>>> 1 sink(s) available.
* index: 0
name: <auto_null>
driver: <module-null-sink.c>
flags: DECIBEL_VOLUME LATENCY FLAT_VOLUME DYNAMIC_LATENCY
state: RUNNING
suspend cause:
priority: 1000
volume: 0: 100% 1: 100%
0: 0.00 dB 1: 0.00 dB
balance 0.00
base volume: 100%
0.00 dB
volume steps: 65537
muted: no
current latency: 16.60 ms
max request: 3 KiB
max rewind: 3 KiB
monitor source: 0
sample spec: s16le 2ch 44100Hz
channel map: front-left,front-right
Stereo
used by: 1
linked by: 3
configured latency: 20.00 ms; range is 0.50 .. 10000.00 ms
module: 9
properties:
device.description = "Dummy Output"
device.class = "abstract"
device.icon_name = "audio-card"
Inside my PulseAudio Volume Control


Here is what I get from ffmpeg when I attempt to stream the video and sound (just video alone streams wonderfully)

Continue reading...