GStreamer force decodebin2 output type

Question

I'm trying to write a program in C which replicates the pipeline:

gst-launch -v filesrc location="bbb.mp4" ! decodebin2 ! ffmpegcolorspace ! autovideosink

DecodeBin2 has a dynamic pad and I've attached a callback to handle its creation. I am unable to link it to ffmpegcolorspace however because the pad capability is always video/quicktime. I would like it to be video/x-raw-yuv or something else which is compatible with ffmpegcolorspace.

Is this possible to force/select the output type of decodebin2?

Thanks.

EDIT: Please do not recommend playbin. I'm trying to learn how how to make pipelines.

why you need ffmpegcolorspace ? without that pipeline works...!! — Jeegar Patel, Dec 13 '11 at 12:13
what probably happens is decodebin2 actually already handles the colorspace conversion. So it's probably not needed. — user975326, Dec 13 '11 at 14:00

score 2 · Accepted Answer · answered Dec 13 '11 at 12:21

Is this possible to force/select the output type of decodebin2?

No you can not force or select the type of its source pad.

decoderbin2 select appropriate demuxer element and that demuxer element parse that media file and depending upon the codec of elementry stream in that media file it creates the caps/type of the output/Source pad.so that type of decoder can link with it and pipeline works.

this all happen in gstremer-plugin code

so if you want such then you need to write plugin by your self..!!

Yep, good answer - its a decoder not really a type converter. Thanks. — user975326, Dec 13 '11 at 13:56

GStreamer force decodebin2 output type

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