Fast forward of 'RTSP ondemand' stream is not working

[roxx]

Hi. I use a Wowza demo VOD (video on demand) application to stream sample.mp4 (from Wowza distribution) on Windows and Ubuntu 14.04. VLC is able to play the stream, but speed control doesn't work. On Windows I use VLC 2.1.3, on Linux I use 2.2.0-rc2 from Ubuntu 14.10 (compiled for 14.04) and 2.2.0 from Git. In the log output I see

[aa400868] live555 demux error: no scale change using old Scale 1.00
[ae901688] core input warning: ACCESS/DEMUX_SET_RATE failed

Log file is here: http://pastebin.com/LVaYRUdu . Is that a known issue?

[Rémi Denis-Courmont]

The server violates the specification and does in fact not seem to support changing the playback rate.

[roxx]

How to achieve that with VLC as a streaming server? I try the following as it written here https://wiki.videolan.org/Documentation ... HowTo/VLM/ :

vlc --ttl 12 -vvv --color -I telnet --telnet-password videolan --rtsp-host 0.0.0.0 --rtsp-port 5000
telnet localhost 4212
new Test vod enabled
setup Test input /tmp/atom.avi

From another VLC instance I open rtsp://localhost:5000/Test but changing speed still doesn't work with the same error in CLI. Does it depend on the video format used? Which video format should I use to enable 2x/3x/etc. speed? thanks in advance.

[Rémi Denis-Courmont]

I think the VLC RTSP server does not support transrating so far.