manifest_flags.cc

// Copyright 2018 Google LLC. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
 
#include <packager/app/manifest_flags.h>
 
#include <cstdint>
#include <string>
 
#include <absl/flags/flag.h>
 
ABSL_FLAG(double,
          time_shift_buffer_depth,
          1800.0,
          "Guaranteed duration of the time shifting buffer for HLS LIVE "
          "playlists and DASH dynamic media presentations, in seconds.");
ABSL_FLAG(bool,
          event_to_vod_on_end_of_stream,
          false,
          "Set to true to convert an event stream to VOD in place "
          "once end of stream is detected");
ABSL_FLAG(
    uint64_t,
    preserved_segments_outside_live_window,
    50,
    "Segments outside the live window (defined by '--time_shift_buffer_depth') "
    "are automatically removed except for the most recent X segments defined "
    "by this parameter. This is needed to accommodate latencies in various "
    "stages of content serving pipeline, so that the segments stay accessible "
    "as they may still be accessed by the player."
    "The segments are not removed if the value is zero.");
ABSL_FLAG(std::string,
          default_language,
          "",
          "For DASH, any audio/text tracks tagged with this language will "
          "have <Role ... value=\"main\" /> in the manifest; For HLS, the "
          "first audio/text rendition in a group tagged with this language "
          "will have 'DEFAULT' attribute set to 'YES'. This allows the "
          "player to choose the correct default language for the content."
          "This applies to both audio and text tracks. The default "
          "language for text tracks can be overriden by "
          "'--default_text_language'.");
ABSL_FLAG(std::string,
          default_text_language,
          "",
          "Same as above, but this applies to text tracks only, and "
          "overrides the default language for text tracks.");
ABSL_FLAG(bool,
          force_cl_index,
          true,
          "True forces the muxer to order streams in the order given "
          "on the command-line. False uses the previous unordered behavior.");
ABSL_FLAG(
    bool,
    per_playlist_target_duration,
    false,
    "If true, TARGETDURATION will be calculated locally in MediaPlaylist.");
ABSL_FLAG(
    std::string,
    closed_captions,
    "",
    "Specifies one or more CEA-608 closed caption channels. Multiple channels "
    "can be provided in a single flag, separated by semicolons (;). Each "
    "channel is defined as a comma-separated list of key-value pairs. "
    "Supported keys: channel(CC1..CC4, SERVICE1..SERVICE63), name, lang, "
    "default(yes|no), "
    "autoselect(yes|no). Example: "
    "--closed_captions "
    "channel=CC1,name=English,lang=eng;channel=CC2,name=French,lang=fra");