- Capture screen and in-build notebook microphone during talk with OBS
- Cut the video to the desired length with Kdenlive. Export as
h264
for maximum end-user compatibility - Upload recording to auphonic.com for automated processing (volume leveling -> pretty clean audio, speech recognition -> subtitles)
- Correct generated subtitles with Subtitle Composer (latest git development version for WebVTT (
.vtt
) support) - Export subtitles as SubRip (
.srt
) with Suptitle Composer - Translate the
.srt
with deepl.com by opening the file with a text editor and copying twenty captions at a time for translation (auto translation from Subtitle Composer was not working for me). Save the translations in a new.srt
Embed the subtitles with ffmpeg with the following command (taken from bannerbear.com)
ffmpeg -i input.mp4 -i subtitle.en.srt -i subtitle.chi.srt -map 0 -map 1 -map 2 -c copy -c:s mov_text -metadata:s:s:0 language=eng -metadata:s:s:1 language=chi output_eng_chi.mp4
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