Hello my name is Charlie Good and I am the CTO of Wowza Media System. We are
the authors of Wowza Media Server. Our product includes a transcoder for
transcoding incoming streams to adaptive bitrate stream sets. We are only using
the AVC/H.264 encoder at this time. We are looking to use libva for accelerated
encoding on Linux leveraging the Quick Sync technology. We are already doing
this on Windows using the Intel Media SDK. I have an implementation that is
currently working when using the baseline profile. I would also like to support
main and high profile. It looks like these profiles are not yet implemented. I
can see this in gen6_mfc.c in the pipeline code where it looks like only
baseline encoding is supported:
VAStatus
gen6_mfc_pipeline(VADriverContextP ctx,
VAProfile profile,
struct encode_state *encode_state,
struct gen6_encoder_context *gen6_encoder_context)
{
VAStatus vaStatus;
switch (profile) {
case VAProfileH264Baseline:
vaStatus = gen6_mfc_avc_encode_picture(ctx, encode_state,
gen6_encoder_context);
break;
/* FIXME: add for other profile */
default:
vaStatus = VA_STATUS_ERROR_UNSUPPORTED_PROFILE;
break;
}
return vaStatus;
}
Is there a plan to add support for main and high encoding in a future release?
Do you have any estimate of when this might be added?
BTW, I am a huge fan of Intel Quick Sync. Very cool technology. Amazing
performance and quality.
Charlie
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