$ python -m aeneas.tools.execute_task --list-parameters

[INFO] You can use --list-values=PARAM on parameters marked by '*'
[INFO] Parameters marked by 'REQ' are required
[INFO] Available parameters:

is_audio_file_detect_head_max           : detect audio head, at most this many seconds (float, None)
is_audio_file_detect_head_min           : detect audio head, at least this many seconds (float, None)
is_audio_file_detect_tail_max           : detect audio tail, at most this many seconds (float, None)
is_audio_file_detect_tail_min           : detect audio tail, at least this many seconds (float, None)
is_audio_file_head_length               : ignore this many seconds at begin of audio (float, None)
is_audio_file_process_length            : process this many seconds of audio (float, None)
is_audio_file_tail_length               : ignore this many seconds at end of audio (float, None)
is_text_file_ignore_regex               : for the alignment, ignore text matched by regex
is_text_file_transliterate_map          : for the alignment, apply this transliteration map to text
is_text_mplain_word_separator           : word separator (mplain)
is_text_munparsed_l1_id_regex           : regex matching level 1 id attributes (munparsed)
is_text_munparsed_l2_id_regex           : regex matching level 2 id attributes (munparsed)
is_text_munparsed_l3_id_regex           : regex matching level 3 id attributes (munparsed)
is_text_type                            : text format (REQ, *)
is_text_unparsed_class_regex            : regex matching class attributes (unparsed)
is_text_unparsed_id_regex               : regex matching id attributes (unparsed)
is_text_unparsed_id_sort                : algorithm to sort matched element (unparsed) (*)
os_task_file_eaf_audio_ref              : audio ref value (eaf)
os_task_file_format                     : sync map format (REQ, *)
os_task_file_head_tail_format           : audio head/tail format (*)
os_task_file_id_regex                   : regex to build sync map id's (subtitles, plain)
os_task_file_levels                     : output the specified levels only (mplain, munparserd)
os_task_file_name                       : sync map file name (ignored)
os_task_file_smil_audio_ref             : audio ref value (smil, smilh, smilm)
os_task_file_smil_page_ref              : text ref value (smil, smilh, smilm)
task_adjust_boundary_aftercurrent_value : offset value, in s (aftercurrent) (float, None)
task_adjust_boundary_algorithm          : algorithm to adjust sync map values (*)
task_adjust_boundary_beforenext_value   : offset value, in s (beforenext) (float, None)
task_adjust_boundary_no_zero            : if True, do not allow zero-length fragments (bool, None)
task_adjust_boundary_nonspeech_min      : minimum long nonspeech duration, in s (float, None)
task_adjust_boundary_nonspeech_string   : replace long nonspeech with this string or specify REMOVE
task_adjust_boundary_offset_value       : offset value, in s (offset) (float, None)
task_adjust_boundary_percent_value      : percent value in [0..100] (percent) (int, None)
task_adjust_boundary_rate_value         : max rate, in chars/s (rate, rateaggressive) (float, None)
task_custom_id                          : custom ID
task_description                        : description
task_language                           : language (REQ, *)

