First I would move to the latest OS, which has much better support for all this.
1.It is impossible to directly stream camera output to H264, the data have to be converted....I'm i right?
Camera RAW output need to go through the ISP and be processed, and the output from the ISP can connected to the H264 encoder.
2.What is the most efficient way to convert camera out data to H264 input data?
The ISP.
3.Does raspberry pi CM4 provides any hardware accelerations for converting formats?
I believe the ISP can do various conversions.
4.What is the maximum possible resolution for video11?
1080p60 IIRC for the HW encoder.
5.What is the maximum possible framerate for 2028*1520 resolution using H264 encoder on video11? (if possible)
Max horizontal res the HW encoder supports is 2048 I think, so you might squeeze in.
6.Should I look into moving from V4L2_MEMORY_MMAP to V4L2_MEMORY_DMABUF?
Dunno, probably.
1.It is impossible to directly stream camera output to H264, the data have to be converted....I'm i right?
Camera RAW output need to go through the ISP and be processed, and the output from the ISP can connected to the H264 encoder.
2.What is the most efficient way to convert camera out data to H264 input data?
The ISP.
3.Does raspberry pi CM4 provides any hardware accelerations for converting formats?
I believe the ISP can do various conversions.
4.What is the maximum possible resolution for video11?
1080p60 IIRC for the HW encoder.
5.What is the maximum possible framerate for 2028*1520 resolution using H264 encoder on video11? (if possible)
Max horizontal res the HW encoder supports is 2048 I think, so you might squeeze in.
6.Should I look into moving from V4L2_MEMORY_MMAP to V4L2_MEMORY_DMABUF?
Dunno, probably.
Statistics: Posted by jamesh — Sat Jul 12, 2025 3:04 pm