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docs(i2s_es8311): fixed ffmpeg instruction in README

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Closes https://github.com/espressif/esp-idf/issues/17653
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laokaiyao
2025-09-28 19:56:45 +08:00
parent 33321e59b1
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examples/peripherals/i2s/i2s_codec/i2s_es8311/README.md
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@@ -142,7 +142,7 @@ The example have contained a piece of music in canon.pcm, if you want to play yo
2. Install 'ffmpeg' tool 2. Install 'ffmpeg' tool
3. Check your music format using ```ffprobe a.mp3```, you can get the stream format (e.g. Stream #0.0: Audio: mp3, 44100Hz, stereo, s16p, 64kb/s) 3. Check your music format using ```ffprobe a.mp3```, you can get the stream format (e.g. Stream #0.0: Audio: mp3, 44100Hz, stereo, s16p, 64kb/s)
4. Cut your music since there is no enough space for the whole piece of music. ```ffmpeg -i a.mp3 -ss 00:00:00 -t 00:00:20 a_cut.mp3``` 4. Cut your music since there is no enough space for the whole piece of music. ```ffmpeg -i a.mp3 -ss 00:00:00 -t 00:00:20 a_cut.mp3```
5. Transfer the music format into .pcm. ```ffmpeg -i a_cut.mp3 -f s16ls -ar 16000 -ac -1 -acodec pcm_s16le a.pcm``` 5. Transfer the music format into .pcm. ```ffmpeg -i a_cut.mp3 -f s16le -ar 16000 -ac 2 -acodec pcm_s16le a.pcm```
6. Move 'a.pcm' under 'main' directory 6. Move 'a.pcm' under 'main' directory
7. Replace 'canon.pcm' with 'a.pcm' in 'CMakeLists.txt' under 'main' directory 7. Replace 'canon.pcm' with 'a.pcm' in 'CMakeLists.txt' under 'main' directory
8. Replace '_binary_canon_pcm_start' and '_binary_canon_pcm_end' with '_binary_a_pcm_start' and '_binary_a_pcm_end' in `i2s_es8311_example.c` 8. Replace '_binary_canon_pcm_start' and '_binary_canon_pcm_end' with '_binary_a_pcm_start' and '_binary_a_pcm_end' in `i2s_es8311_example.c`