kopia lustrzana https://github.com/raspberrypi/pico-playground
47 wiersze
1.0 KiB
Markdown
47 wiersze
1.0 KiB
Markdown
# Building
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Note these instructions apply to Unix; they have not been tested on other platforms
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To build the converter, either do a `PICO_PLATFORM=host` build of pico-playground (which will include it),
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or from this directory just do
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```bash
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mkidr build
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cd build
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cmake -DCMAKE_BUILD_TYPE=Release ..
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make
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```
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Converter takes two inputs (and you're going to need to read the `ffmpeg` docs!)
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# .rgb file
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This must be 320x240 30fps 24 bit raw RGB
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e.g.
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```
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ffmpeg -i input.mkv -vf "crop=1088:816:416:132, scale=(iw*sar)*max(320/(iw*sar)\,240/ih):ih*max(320/(iw*sar)\,240/ih)" -c:v rawvideo -pix_fmt rgb24 -r 30 movie.rgb
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```
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`-c:v rawvideo -pix_fmt rgb24 -r 30 movie.rgb` are key here (and the 320x240 output size)
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# .pcm file
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This must be stereo 44100Hz signed 16 bit little-endian raw data
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e.g.
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```
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ffmpeg -i input.mkv -ac 2 -f s16le -c:a pcm_s16le -ar 44100 movie.pcm
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```
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# Converting
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You can then do:
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```c
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converter movie.rgb movie.pcm movie.pl2
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```
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If the inputs are not as specified, then the converter will likely crash! |