diff options
| -rw-r--r-- | custom_libs/subliminal_patch/providers/whisperai.py | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/custom_libs/subliminal_patch/providers/whisperai.py b/custom_libs/subliminal_patch/providers/whisperai.py index 866585cdb..0546717a2 100644 --- a/custom_libs/subliminal_patch/providers/whisperai.py +++ b/custom_libs/subliminal_patch/providers/whisperai.py @@ -16,6 +16,7 @@ from babelfish.exceptions import LanguageReverseError import ffmpeg import functools +from pycountry import languages # These are all the languages Whisper supports. # from whisper.tokenizer import LANGUAGES @@ -132,6 +133,18 @@ def set_log_level(newLevel="INFO"): # initialize to default above set_log_level() +# ffmpeg uses the older ISO 639-2 code when extracting audio streams based on language +# if we give it the newer ISO 639-3 code it can't find that audio stream by name because it's different +# for example it wants 'ger' instead of 'deu' for the German language +# or 'fre' instead of 'fra' for the French language +def get_ISO_639_2_code(iso639_3_code): + # find the language using ISO 639-3 code + language = languages.get(alpha_3=iso639_3_code) + # get the ISO 639-2 code or use the original input if there isn't a match + iso639_2_code = language.bibliographic if language and hasattr(language, 'bibliographic') else iso639_3_code + logger.debug(f"ffmpeg using language code '{iso639_2_code}' (instead of '{iso639_3_code}')") + return iso639_2_code + @functools.lru_cache(2) def encode_audio_stream(path, ffmpeg_path, audio_stream_language=None): logger.debug("Encoding audio stream to WAV with ffmpeg") @@ -140,7 +153,10 @@ def encode_audio_stream(path, ffmpeg_path, audio_stream_language=None): # This launches a subprocess to decode audio while down-mixing and resampling as necessary. inp = ffmpeg.input(path, threads=0) if audio_stream_language: - logger.debug(f"Whisper will only use the {audio_stream_language} audio stream for {path}") + # There is more than one audio stream, so pick the requested one by name + # Use the ISO 639-2 code if available + audio_stream_language = get_ISO_639_2_code(audio_stream_language) + logger.debug(f"Whisper will use the '{audio_stream_language}' audio stream for {path}") inp = inp[f'a:m:language:{audio_stream_language}'] out, _ = inp.output("-", format="s16le", acodec="pcm_s16le", ac=1, ar=16000, af="aresample=async=1") \ |