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y5gfunc.encode.audio.utils

utils

Functions:

Name Description
check_audio_stream_lossless

Checks if an audio stream from ffprobe represents a lossless format.

Attributes:

Name Type Description
LOSSLESS_CODEC_NAMES

LOSSLESS_CODEC_NAMES module-attribute 

LOSSLESS_CODEC_NAMES = {'truehd', 'flac', 'alac', 'mlp', 'pcm_s16le', 'pcm_s24le', 'pcm_s32le', 'pcm_f32le', 'pcm_f64le', 'pcm_s16be', 'pcm_s24be', 'pcm_s32be', 'pcm_f32be', 'pcm_f64be', 'pcm_alaw', 'pcm_mulaw', 'pcm_u8', 'pcm_bluray'}

check_audio_stream_lossless 

check_audio_stream_lossless(stream: dict) -> bool

Checks if an audio stream from ffprobe represents a lossless format.

Parameters:

Name Type Description Default

stream

dict

A dictionary representing an audio stream from ffprobe JSON.

 required

Returns:

Type Description
bool

True if the stream is identified as lossless, False otherwise.
Source code in y5gfunc/encode/audio/utils.py 
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def check_audio_stream_lossless(stream: dict) -> bool:
    """
    Checks if an audio stream from ffprobe represents a lossless format.

    Args:
        stream: A dictionary representing an audio stream from ffprobe JSON.

    Returns:
        True if the stream is identified as lossless, False otherwise.
    """
    codec_name = str(stream.get("codec_name", "")).lower()
    profile = str(stream.get("profile", "")).lower()

    if "dts" in profile or codec_name == "dts":
        if profile == "dts-hd ma":
            return True
        else:
            return False

    if codec_name in LOSSLESS_CODEC_NAMES:
        return True

    return False