Missing H.264 decoder but it isn't?

[Adams, Bruce (KMLWG)]

Hi,
     Thanks. That definitely moves things along. It seems I had bmcdec installed because I installed crystalhd.

show install:
 gst-inspect-1.0 bcmdec                             

show what to uninstall (Debian):

 dpkg --search /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstbcmdec.so - And 

uninstall it:
 sudo apt-get remove gstreamer1.0-crystalhd 

Presumably I could have blacklisted it instead but I don't know how.
It also looks like increasing the rank would be straightforward in code.

I had a follow up problem, decodebin and tsdemux seemed intent on supplying video when I want audio. The solution was a caps filter or two. A working pipeline for me is:

GST_DEBUG=0 gst-launch-1.0 -v filesrc location=multi.ts ! tsparse ! tsdemux program_number=17540 ! audio/mpeg ! decodebin ! audio/x-raw ! audioresample ! audioconvert ! audio/x-raw, rate=8000, channels=1 ! wavenc ! filesink location=cbbc.wav

Thanks for the advice.

Regards,

Bruce.


-----Original Message-----
From: gstreamer-devel [mailto:gstreamer-devel-bounces at lists.freedesktop.org] On Behalf Of Vinod Kesti
Sent: 24 May 2018 06:13
To: gstreamer-devel at lists.freedesktop.org
Subject: Re: Missing H.264 decoder but it isn't?

Hi Adams,

decodebin is picking hardware decoder "bcmdec" to decode h264 stream. bcmdec
Plugin is not able to open the device and pipeline closed with error. 

To use avdec_h264 you have have 2 options.
1. Remove "bcmdec" plugin
2. Change avdec_h264 rank so that decodebin autoplug picks avdec_h264 over
bcmdec. Check plugin writer guides to check how alter the plugins rank.

Check if this is usefull for you.
https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPluginFeature.html

Here bcmdec is Broadcom hardware decoder. This is not there in mainstream
Gstreamer plugin.
https://github.com/agx/gst-plugins-bad/blob/master/ext/bcmdec/gstbcmdec.c




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