DCCP for gstreamer-1.0

[Jiaqi Gao]

Hi,

I'm trying to build a simple streaming pipeline over DCCP to do some experiment and measurement. But I noticed the DCCP plugin is unavailable in the Gstreamer-1.0 version. The old DCCP plugin code is still available in 1.10 version, but only works for Gstreamer 0.10.

Does there any unofficial version available? Or can I just modify based on the TCP plugin?

I also tried using Gstreamer 0.10, and try to transfer file using following command:

Client:

gst-launch-0.10 filesrc location=~/video.mpg ! dccpclientsink port=8000 host=x.x.x.x

Server:

gst-launch-0.10 dccpserversrc port=8000 ! filesink location=~/video.mpg

This gave me 0 loss and the file is complete. But when I tried doing something else, things are different:

Client:

gst-launch-0.10 filesrc location=~/video.mpg ! dccpclientsink port=8000 host=x.x.x.x

Server:

gst-launch-0.10 dccpserversrc port=8000 ! decodebin ! ffmpegcolorspace ! pngenc snapshot=false ! multifilesink location=~/frame%05.jpg

There are 177 frames in the video.mpg, I can only extract around 150 frames out. And the result differs between each execution.

The problem doesn't exist just change DCCP to TCP. The experiment environment is two servers under the same subnet.

Does anyone has idea on why this happens and has any solution? Can I solve it by switching to Gstreamer 1.0?

Thanks,

Jiaqi

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[Stefan Sauer]

On 07/25/2017 11:09 PM, Jiaqi Gao wrote:

Hi,

I'm trying to build a simple streaming pipeline over DCCP to do some experiment and measurement. But I noticed the DCCP plugin is unavailable in the Gstreamer-1.0 version. The old DCCP plugin code is still available in 1.10 version, but only works for Gstreamer 0.10.

Does there any unofficial version available? Or can I just modify based on the TCP plugin?

I also tried using Gstreamer 0.10, and try to transfer file using following command:

Client:

gst-launch-0.10 filesrc location=~/video.mpg ! dccpclientsink port=8000 host=x.x.x.x

Server:

gst-launch-0.10 dccpserversrc port=8000 ! filesink location=~/video.mpg

This gave me 0 loss and the file is complete. But when I tried doing something else, things are different:

Client:

gst-launch-0.10 filesrc location=~/video.mpg ! dccpclientsink port=8000 host=x.x.x.x

Server:

gst-launch-0.10 dccpserversrc port=8000 ! decodebin ! ffmpegcolorspace ! pngenc snapshot=false ! multifilesink location=~/frame%05.jpg

There are 177 frames in the video.mpg, I can only extract around 150 frames out. And the result differs between each execution.

The problem doesn't exist just change DCCP to TCP. The experiment environment is two servers under the same subnet.

Does anyone has idea on why this happens and has any solution? Can I solve it by switching to Gstreamer 1.0?

The dccp plugins were never ported to 1.0.

Stefan

Thanks,

Jiaqi

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