Delay in the stream of an audio conf

[shibby]

Hello,

I saw a lot of people asking that in the forum, but no answer seems to be able to make the delay below 2 sec.
Most topic I read were quite old, so may be there is any change now ?
I need a delay about 0.5 sec, I already try to change the cache size

Code: Select all

vlc v4l://sdsdsd --v4l-vdev azead --sout '#transcode{acodec=mpga,ab=192,channels=2}:duplicate{dst=std{access=udp,mux=ts,dst=pedibux:1234}}' --sout-udp-caching 10

It did not work.
Is there some faster codec ? some faster mux ? faster protocol ?

Shibby.

[shibby]

Here is the solution if you want to make video/audio conference using vlc :

http://www.vlvc.net/en-home.html

that's based on vlc core, but without the delay.

[dave73]

Hi Shibbi,

I try the VLVC solution but there is always a delay.
I try with different parameters (codec, network configuration...) but nothing change.
Which configuration do you use to avoid the delay?

Thank in advance.

[Nehemiah]

Hi,
How did you measure delay?
Thanks

[dave73]

I have 2 PC connected in the same LAN and these computers are physically close to each other. That why I perfectly see the delay between the transmitted video and the receive video.
I have not an accuracy timing but with mp4v video codec @256kbps and audio codec @96kbps there is a delay of about 3secondes.

[dave73]

With these parameters under vlc the delay is droped under 1second :
udp-caching=0 (defaut = 200ms)

(Setting->Preferences->Stream output->Muxers->MPEG-TS)
dts-delay=20 (defaut = 400ms)
pcr=20 (defaut = 70ms)
shaping=20 (defaut=20ms)

[yuniara]

With these parameters under vlc the delay is droped under 1second :
udp-caching=0 (defaut = 200ms)

(Setting->Preferences->Stream output->Muxers->MPEG-TS)
dts-delay=20 (defaut = 400ms)
pcr=20 (defaut = 70ms)
shaping=20 (defaut=20ms)

is it playout delay ? how do i have to do to know network delay of every packet sent by VLC in server side to VLC in client side. not by using wireshark, but i want to know it in VLC client. Thank You