Why does this gstreamer pipeline stall ?

Posted by timday on Stack Overflow See other posts from Stack Overflow or by timday
Published on 2010-06-14T23:57:22Z Indexed on 2010/06/15 0:02 UTC
Read the original article Hit count: 300

Filed under:

command-line

|

video

|

audio

|

video-processing

|

gstreamer

I've been playing around with gstreamer pipelines using gst-launch. I don't have any problems if I just want to process audio or video separately (to separate files, or to alsasink/ximagesink), but I'm confused by what I need to do to mux the streams back together using, say avimux.

This

gst-launch-0.10 filesrc location=MVI_2034.AVI ! decodebin name=dec \
dec. ! queue ! audioconvert ! 'audio/x-raw-int,rate=44100,channels=1' ! queue ! mux. \
dec. ! queue ! videoflip 1 ! ffmpegcolorspace ! jpegenc ! queue ! mux. \
avimux name=mux ! filesink location=out.avi

just outputs

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...

and then stalls indefinitely.

What's the trick ?

© Stack Overflow or respective owner

Related posts about command-line

WMI permissions: Select CommandLine, ProcessId FROM Win32_Process returns no data for CommandLine

as seen on Server Fault - Search for 'Server Fault'
Hi all, I am gathering performance data via WMI and would like to avoid having to use an account in the Administrators group for this purpose. The target machine is running Windows Server 2003 with the latest SP/updates. I've done what I believe to be the appropriate configuration to allow our user… >>> More
WMI permissions: Select CommandLine, ProcessId FROM Win32_Process returns no data for CommandLine

as seen on Server Fault - Search for 'Server Fault'
I am gathering performance data via WMI and would like to avoid having to use an account in the Administrators group for this purpose. The target machine is running Windows Server 2003 with the latest SP/updates. I've done what I believe to be the appropriate configuration to allow our user access… >>> More
Java 1.5 Command Line Password Masking

as seen on Stack Overflow - Search for 'Stack Overflow'
All, Our server is running Java 1.5 and I am having difficulty trying to mask user input from the command line. I am executing a jar file (java -jar my.jar) and am working through command line prompts via printlns. I cannot use Java Console. Thanks >>> More
Modifying AD Schema permissions from the command line

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
Recently while making some changes for a client, I accidently dug myself into a pretty deep hole. I was trying to explicitly deny a certain user from reading a few group policies including the Default Domain Policy. When I went in to make the change I accidently denied Authenticated Users rather… >>> More
Ask the Readers: Do You Use the Command Line?

as seen on How to geek - Search for 'How to geek'
Most people have heard of it but not everyone is familiar or comfortable with how to use this bastion of geekdom. This week we would like to know if you use the command line or not. The command line…the bastion of ultimate geekery in many peoples’ eyes. You often hear people referring to doing… >>> More

Related posts about video

Smithsonian Showcases Video Game History with The Art of Video Games [Video]

as seen on How to geek - Search for 'How to geek'
The Art of Video Games is the Smithsonian’s look at the history of video games; check out this video trailer to see what the exhibition is all about and hear from some notable folks. From the Smithsonian listing for the exhibition: The Art of Video Games is one of the first exhibitions to… >>> More
Removing broken packages on distro update (13.04 to 13.10)

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
i'm kinda new to linux. last night i tried upgrading from 13.04 to 13.10 but i got the "could not calculate" error. i read this question and found this error in the main log: Dist-upgrade failed: 'E:Unable to correct problems, you have held broken packages.' and here's a list of my broken packages… >>> More
Ubuntu 11.04 update fail!

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I try to update Ubuntu Natty Narwhal, but I got this error: dpkg: .../xserver-xorg-core_2%3a1.9.99.901+git20110131.be3be758-0ubuntu6_i386.deb miatt xserver-xorg-core-t is tartalmazza: xserver-xorg-core breaks xserver-xorg-video-8 nvidia-current provides xserver-xorg-video-8 and is present and… >>> More
Automating video generation by adding an intro and a trailing video to the main video

as seen on Super User - Search for 'Super User'
I have a video project I am trying to compile. Here is the overview: I have many videos which are 5 minute training sessions - Main video. The Intro Video will be a standard 5 second video that will have the Video title and Author. This will be concatenated to the main video. The Trailing Video… >>> More
Stream video from one app to another in OS X (Software video input device)

as seen on Super User - Search for 'Super User'
Not sure how specifically to word this... I'm wondering if there's any way to take a video stream from one application, for example VLC Media Player, and present that video stream to other applications as a video input source. For example, could I broadcast a video file from my hard disk to a website… >>> More