openH264 support for dual stream - main video - 720p@30fps and content - 1080p@30fps

Question

I am working on a testApp on Android platform using pjSIP media pipeline where I need to support dual video streams with following requirements.

1. Main Video - 720p@30fps
2. Content stream - 1080p@30fps.

I use openH264 (pjMedia has openH264 support). My test application without content stream, can achieve 720p@30fps. But as soon as I start content my main video fps drops to around 720p@7fps and content 1080p@4fps. I am not sure whether openH264 support 720p@30fps and 1080p@30fps simultaneously. Any help is highly appreciated.

Setup details -

1. Android system has 8 cores
2. Using openh264 for video and content
3. Enabled openH264 8 encoding threads
4. My offer has -

---

Main VIdeo - b=TIAS:1856000 a=rtpmap:97 H264/90000 a=fmtp:97 profile-level-id=42e01f; packetization-mode=1;max-mbps=108000;max-fs=3600;max-fps=3000

---

Content stream - b=TIAS:4856000 a=rtpmap:97 H264/90000 a=fmtp:97 profile-level-id=428028; packetization-mode=1;max-mbps=245760;max-fs=8192;max-fps=3000

4. I get answer from network-

---

Main VIdeo - b=TIAS:1856000 a=rtpmap:97 H264/90000 a=fmtp:97 profile-level-id=42e01f; packetization-mode=1;max-mbps=108000;max-fs=3600;max-fps=3000

---

Content stream - b=TIAS:4856000 a=rtpmap:97 H264/90000 a=fmtp:97 profile-level-id=428028; packetization-mode=1;max-mbps=245760;max-fs=8192;max-fps=3000

I tried various H.264 encoding config option for video stream and content stream-

• iMaxQp = 40
• iMinQp = 16
• iRCMode = RC_BITRATE_MODE
• iUsageType = CAMERA_VIDEO_REAL_TIME // People video
• iUsageType = SCREEN_CONTENT_REAL_TIME // Content stream
• bEnableDenoise = 0
• bUseLoadBalancing = true
• bEnableAdaptiveQuant = 0
• iLoopFilterDisableIdc = 0
• iComplexityMode = LOW_COMPLEXIT
• iMultipleThreadIdc = 8 // My Android system has 8 cores
• uiSliceSizeConstraint = 1254
• uiSliceMode = SM_SIZELIMITED_SLICE
• uiSliceNum = 1
• uiSliceMbNum[0] = 960

Any suggestion is highly appreciated .....