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Simple FPV

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Encoder

Here is an example of getting video from a GK7205V300 board using only HiMPP low level API.

This example is configured and tested on an IP camera using IMX335 image sensor. If your module has another sensor, you need to adjust board configuration profile in the source code. This example includes profiles for most popular sensors.

Video output format is H.264 over UDP with NAL fragmentation like in RTP, although NAL prefixes are omitted. Keep in mind that this is not a valid RTP stream! To receive and display video stream extra coding is needed. The NAL defragmentation algorithm is described in vdec-sample.c.

How to build

Build script usage:

./build.sh venc-goke
./build.sh venc-hisi
./build.sh vdec

Upload the compiled binary onto your camera:

scp -O venc/venc [email protected]:/tmp

Stop majestic (pre-packaged streamer) and start venc:

killall majestic
/tmp/venc

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silicon_research's Issues

About NAL fragmentation.

By modifying the wfb-ng code to remove NAL fragmentation before forwarding the video stream,
Can I use a third party to decode the video? (e.g. QOpenHD, fpv_vr)

Not work mode 1080p60

build master+5ed3801, 2024-02-05

root@openipc-hi3536dv100:# killall vdec
root@openipc-hi3536dv100:# vdec -p 5600 -d frame -c h265 -m 1080p60 --mavlink-port 14750 --bg-r 30 --bg-g 0
[HI_VERSION=Hi3536D_MPP_V1.0.1.0 B040 Release]

VDEC picture block size = 7856640, 330240
HDMI start success
VO: 1920x1080 @ 60
ERROR: Unable to create VDEC channel
root@openipc-hi3536dv100:~# ERROR: Unable to create VDEC channel

Отдельный параметр -m для VGA и HDMI

У меня подключено два монитора vga(1024х768) и hdmi(720р). Картинка отображается зеркально. Вся проблема заключается в том, что когда -m 720p60 соотношение сторон правильно отображается через hdmi, когда -m 1024x768x60 - наоборот на vga, при этом на hdmi происходит обрезка верх-низ, право-лево.

Если возможно, добавьте настройку разрешения для каждого порта отдельно.

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