i.MX ProcessorsのトピックIMX8M video encoding

IMX8M video encoding

tcmichals — Fri, 16 Mar 2018 14:50:59 GMT

Does the IMX8m VPU support video encoding? Or does the GPU support encoding?

Several links state

i.MX 8 Series Applications Processors: Multicore Arm® Cortex®-A72, Cortex-A53, Cortex-A35, Cortex-M4 cores|NXP

1080p30
(h.264) - SW

IMX8MDQLQRM.pd

from the reference manual, 1.4.10 Video Processing Unit (VPU), there is no video encoder.

Re: IMX8M video encoding

jamesbone — Tue, 27 Mar 2018 18:56:02 GMT

Hello Tim,

The VPU it is only for DECODING purpose, as you can see from the Datasheet:

The chip incorporates the following Video Processing Unit (VPU) features:

• 4Kp60 HEVC/H.265 Main, Main10 (Hantro G2) with best effort for 4Kp75

• 4Kp75 is needed to support PiP (Picture in Picture) for live TV and dual layer

Dolby Vision decoding one 4Kp60 stream and one 1080p60 stream

• 4Kp60 VP9 Profile 0, 2 (10 bit) (Hantro G2)

• 4Kp30 AVC/H.264 Baseline, Main, High decoder (Hantro G1)

• 1080p60 MPEG-2, MPEG-4p2, VC-1, VP8, RV9, AVS, MJPEG, H.263 decoder

(Hantro G1)

• Frame Buffer Compression – Lossless compression of buffers

• TrustZone support

Re: IMX8M video encoding

jignesh1 — Tue, 19 Mar 2019 07:15:05 GMT

Hello James,

I want to know that what are the maximum limit of VPU for decoding. We are using imx8MQ EVK board.

In our use-case,

1. We need one 1920x1080@60 decoding with scale.

2. One post processing unit, that do scale and rotation (90 or 270)

Please let me know if this is possible.

Also right now I am looking at example that how to use VPU for independent post processing. Please let me know if you have any reference code for same.

Thanks,

Jignesh Patel

Re: IMX8M video encoding

ashish_mishra — Wed, 18 Dec 2019 06:55:34 GMT

Sir ,

I have Full HD (1920x1080p) video data at input (~2 Mega pixel/ frame .x60= 120x60x24=480 Bytes/sec). i don't want any data loss (i shall prefer to use lossless encoding technique ) ? Can you please tell me which encoding technique i shall fallow to encode Full HD Video data, so i can easily decode it through VPU(H.264)

Regards,

Ashish