91.21 Video Subtitles

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First extract the text from the video, using for example, the MLHub command transcribe:

ml transcribe openai -f srt orig.mp4 > orig.srt

Or use whisper directly with:

whisper --fp16 False --output_format=srt orig.mp4 > /dev/null

Then process the video to add the subtitles.

ffmpeg -i orig.mp4 -filter_complex \
    "subtitles=orig.srt:force_style='FontName=DejaVu Serif,Fontsize=14,MarginV=0,Alignment=2"
    -vcodec libx264 -acodec copy -q:v 0 -q:a 0 orig_sub.mp4

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