41 lines
1.5 KiB
Markdown
41 lines
1.5 KiB
Markdown
# DJI FPV configuration
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## Configuring ArduPilot for DJI FPV
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If you're using the DJI FPV system, here's the relevant configuration you need to set:
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1. Set `OSD_TYPE=3`.
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2. Set `SERIALn_PROTOCOL=33 SERIALn_BAUD=115 SERIALn_OPTIONS=0` (DJI FPV).
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3. Create a text file called `naco.txt` on the SD card of the Air Unit with the text `1` in it [to unlock full power](https://oscarliang.com/dji-fpv-system-fcc-700mw/).
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4. Create a text file called `naco_pwr.txt` on the SD card of the goggles with the text `pwr_2` in it [to unlock more full power](https://oscarliang.com/dji-fpv-system-1200mw-output/).
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5. Set "Custom OSD" to "on" in the goggles menu.
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6. Arrange your OSD elements how you like them.
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That's it!
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## Configuring AP for the DJI O3
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If you're using DJI O3, this is what you need to do:
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* Set , `OSD_TYPE=5` for MSP_DISPLAYPORT.
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* Set `SERIALn_PROTOCOL=42 SERIALn_BAUD=115 SERIALn_OPTIONS=0` for DisplayPort
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* Arrange your OSD elements as you want them.
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Done!
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## Synchronizing the video and audio of the DJI Air Unit
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The audio of the DJI air unit is slower than the video, leading to desynchronization, but it is slower by a constant factor, which means it can be easily corrected with the following command:
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```bash
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$ ffmpeg -i "$1" -c:v copy -filter:a atempo=1.001480,volume=20 \
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-c:a aac -b:a 93k "$(basename "$1" .mp4)_fixed_audio.mp4"
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```
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* * *
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<p style="font-size:80%; font-style: italic">
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Last updated on January 01, 2023. For any questions/feedback,
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email me at <a href="mailto:hi@stavros.io">hi@stavros.io</a>.
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</p>
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