HEVC decoder plugin blocks AVC decoder

[SDeut]

I'm using Intel® Media Server Studio 2015 R4. My application makes usage of the media sdk library (libmfxsw64.dll) for decoding AVC video.

As soon as I add the HEVC decoder plugin folder to my application (15dd936825ad475ea34e35f3f54217a6 plus content), the initialization of AVC decoding fails in MFXVideoDECODE_Init with error MFX_ERR_INVALID_VIDEO_PARAM.

I even do NOT load the plugin with MFXVideoUSER_Load (.. MFX_PLUGINID_HEVCD_SW ..), so I wonder what's the influence of the plugin folder here?

[Sravanthi_K_Intel]

Hi Stephan,

Is this behavior being observed on our samples or tutorial applications? If so, can you please send us more details (exact sample used, command line, any changes to the code. OS/platform) - we do not expect such behavior from our samples/tutorials.

[SDeut]

sorry, I described one thing wrong, I did load the plugin:

 sts = MFXVideoUSER_Load (m_mfxSession, & MFX_PLUGINID_HEVCD_SW, 1) ;

if you add this line in sample, e.g. pipeline_decode.cpp directly after session.InitEx () call, you can see the behavior in sample as well.

The sample does not decode AVC anymore, and fails in MFXVideoDECODE_Init.

[Alexey_F_Intel]

you can't have 2 decoders in one session. you need to create another session for the second decoder. Each session allows to include 1 Decoder, 1 VPP and 1 encoder. for more complicated configuration you need to create multiple sessions and join them

[Sravanthi_K_Intel]

Ah, thanks for the clarification Stephan - Alexey's response is spot on. You can take a look at our sample_multi_transcode as an example of how to create multiple media sessions.

[SDeut]

thank you for reply.

I did not have two decoders in session, but did always load the plugin, regardless of the video codec. So I do this dynamically now, this fixes my problem.