• Bodecs Bela's avatar
    avformat/hlsenc: hls_start_number_source and start_number · 8811d6d9
    Bodecs Bela authored
    start_number option starts the playlist sequence number
    (#EXT-X-MEDIA-SEQUENCE) from the specified number. Unless hls_flags
    single_file is set, it also specifies starting sequence numbers of
    segment and subtitle filenames. Sometimes it is usefull to have unique
    starting numbers at each run, but currently it is only achiveable by
    setting this parameter manually.
    This patch enables to specify start_number source parameter by
    introducing hls_start_number_source with 3 possible values:
    generic/epoch/datetime. This ensures to set start sequence number
    automatically for practically unique numbers. Generic option is the
    default and this is the curent behaviour: start_number option value
    specifies the start sequence number. (start_number default value is 0)
    If hls_start_number_source is set to epoch, then the start number will
    be the seconds since epoch (1970-01-01 00:00:00). If set to datetime,
    then the start sequence number will be based on the current date/time
    value as YYYYmmddHHMMSS. e.g. 20161231235659.
    Hls speficication allows 64 bit integers as sequence numbers. This patch
    also changes some code where only 32 bit integer values were handled
    correctly.
    Reviewed-by: 's avatarMoritz Barsnick <barsnick@gmx.net>
    Signed-off-by: 's avatarBela Bodecs <bodecsb@vivanet.hu>
    Signed-off-by: 's avatarSteven Liu <lq@chinaffmpeg.org>
    8811d6d9
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