跳过一个章节的 VOD 播放 vod-playback-with-a-skipped-chapter
场景 scenario
在此方案中，用户将跳过主内容中的一章。
此方案与包含一个章节的 VOD 播放方案相同，但此例中的用户希望从章节中搜寻，从而跳过该章节以进入主内容。
触发器
心跳方法
网络调用
注释
章节开始。
trackEvent:ChapterStart心跳章节开始
将播放章节的第一帧。
trackPlay心跳章节播放
当章节内容在主内容之前播放时，我们希望在章节开始时开始播放心跳。
将播放章节。
章节心跳
搜寻开始跳过第一章。
trackEvent:trackSeekStart搜寻期间没有心跳
搜寻结束。
trackEvent:trackSeekComplete心跳会继续发布此内容。
应用程序可实现用户从常规的章节边界进行搜寻。
trackEvent:trackChapterSkip将播放内容。
内容心跳
会话结束。
trackSessionEndSessionEnd 是指观看会话结束。即使用户没有观看至媒体结束，也必须调用此 API。参数 parameters
在章节播放过程中使用的参数与包含一个章节的 VOD 播放场景中的参数相同，不同之处仅在于没有章节结束网络调用。
示例代码 sample-code
Android
要在 Android 中查看此方案，请设置以下代码：
// Set up mediaObject
MediaObject mediaInfo = MediaHeartbeat.createMediaObject(
Configuration.MEDIA_NAME,
Configuration.MEDIA_ID,
Configuration.MEDIA_LENGTH,
MediaHeartbeat.StreamType.VOD
);
HashMap<String, String> mediaMetadata = new HashMap<String, String>();
mediaMetadata.put(CUSTOM_KEY_1, CUSTOM_VAL_1);
mediaMetadata.put(CUSTOM_KEY_2, CUSTOM_VAL_2);
// 1. Call trackSessionStart() when the user clicks Play or if autoplay is used,
// i.e., there is an intent to start playback.
_mediaHeartbeat.trackSessionStart(mediaInfo, mediaMetadata);
......
......
// Chapter
HashMap<String, String> chapterMetadata = new HashMap<String, String>();
chapterMetadata.put(CUSTOM_KEY_1, CUSTOM_VAL_1);
MediaObject chapterDataInfo =
MediaHeartbeat.createChapterObject(CHAPTER_NAME,
CHAPTER_POSITION,
CHAPTER_LENGTH,
CHAPTER_START_TIME);
// 2. Track the MediaHeartbeat.Event.ChapterStart event when the chapter starts to play.
_mediaHeartbeat.trackEvent(MediaHeartbeat.Event.ChapterStart,
chapterDataInfo,
chapterMetadata);
.......
.......
// 3. Call trackPlay() when the playback actually starts, i.e., when the first frame
// of the main content is rendered on the screen.
_mediaHeartbeat.trackPlay();
.......
.......
// 4. Track the MediaHeartbeat.Event.SeekStart event when the user begins to seek out
// of the chapter with the intent to skip it.
_mediaHeartbeat.trackEvent(MediaHeartbeat.Event.SeekStart, null, null);
.......
.......
// 5. Track the MediaHeartbeat.Event.SeekComplete event when the user seeks out of the
// chapter with the intent to skip it.
_mediaHeartbeat.trackEvent(MediaHeartbeat.Event.SeekComplete, null, null);
.......
.......
// 6. Track the MediaHeartbeat.Event.ChapterSkip event because the user skipped the
// chapter by seeking out of it in the steps above.
_mediaHeartbeat.trackEvent(MediaHeartbeat.Event.ChapterSkip, null, null);
.......
.......
// 7. Call trackComplete() when the playback reaches the end, i.e., when the media
// completes and finishes playing.
_mediaHeartbeat.trackComplete();
........
........
// 8. Call trackSessionEnd() when the playback session is over. This method must be
// called even if the user does not watch the media to completion.
_mediaHeartbeat.trackSessionEnd();
........
........
iOS
要在 iOS 中查看此方案，请设置以下代码：
// Set up mediaObject
ADBMediaObject *mediaObject =
[ADBMediaHeartbeat createMediaObjectWithName:MEDIA_NAME
length:MEDIA_LENGTH
streamType:ADBMediaHeartbeatStreamTypeVOD];
NSMutableDictionary *mediaContextData = [[NSMutableDictionary alloc] init];
[mediaContextData setObject:CUSTOM_VAL_1 forKey:CUSTOM_KEY_1];
[mediaContextData setObject:CUSTOM_VAL_2 forKey:CUSTOM_KEY_2];
// 1. Call trackSessionStart when the user clicks Play or if autoplay is used,
// i.e., there's an intent to start playback.
[_mediaHeartbeat trackSessionStart:mediaObject data:mediaContextData];
.......
.......
// Chapter
NSMutableDictionary *chapterContextData = [[NSMutableDictionary alloc] init];
[chapterContextData setObject:CONTEXT_DATA_VALUE forKey:CONTEXT_DATA_KEY];
id chapterInfo =
[ADBMediaHeartbeat createChapterObjectWithName:CHAPTER_NAME
position:CHAPTER_POSITION
length:CHAPTER_LENGTH
startTime:CHAPTER_START_TIME];
// 2. Track the ADBMediaHeartbeatEventChapterStart event when the chapter starts.
[_mediaHeartbeat trackEvent:ADBMediaHeartbeatEventChapterStart
mediaObject:chapterInfo
data:chapterContextData];
.......
.......
// 3. Call trackPlay when the playback actually starts, i.e., when the first
// frame of the main content is rendered on the screen.
[_mediaHeartbeat trackPlay];
.......
.......
// 4. Track the trackEvent:ADBMediaHeartbeatEventSeekStart event when the user
// begins to seek out of the chapter with the intent to skip it.
[_mediaHeartbeat trackEvent:ADBMediaHeartbeatEventSeekStart mediaObject:nil data:nil];
.......
.......
// 5. Track the trackEvent:ADBMediaHeartbeatEventSeekComplete event when the
// user seeks out of the chapter with the intent to skip it.
[_mediaHeartbeat trackEvent:ADBMediaHeartbeatEventSeekComplete mediaObject:nil data:nil];
.......
.......
// 6. Track the trackEvent:ADBMediaHeartbeatEventChapterSkip event because the
// user skipped the chapter by seeking out of it in the steps above.
[_mediaHeartbeat trackEvent:ADBMediaHeartbeatEventChapterSkip
mediaObject:chapterInfo
data:chapterContextData];
.......
.......
// 7. Call trackComplete when the playback reaches the end, i.e., when the media
// completes and finishes playing.
[_mediaHeartbeat trackComplete];
.......
.......
// 8. Call trackSessionEnd when the playback session is over. This method must
// be called even if the user does not watch the media to completion.
[_mediaHeartbeat trackSessionEnd];
.......
.......
JavaScript
要在 JavaScript 中查看此方案，请输入以下文本：
// Set up mediaObject
var mediaInfo = MediaHeartbeat.createMediaObject(
Configuration.MEDIA_NAME,
Configuration.MEDIA_ID,
Configuration.MEDIA_LENGTH,
MediaHeartbeat.StreamType.VOD
);
var mediaMetadata = {
CUSTOM_KEY_1 : CUSTOM_VAL_1,
CUSTOM_KEY_2 : CUSTOM_VAL_2,
CUSTOM_KEY_3 : CUSTOM_VAL_3
};
// 1. Call trackSessionStart() when Play is clicked or if autoplay is used,
// i.e., there's an intent to start playback.
this._mediaHeartbeat.trackSessionStart(mediaInfo, mediaMetadata);
......
......
// Chapter
var chapterMetadata = {
CUSTOM_KEY_1 : CUSTOM_VAL_1
};
var chapterDataInfo =
MediaHeartbeat.createChapterObject(CHAPTER_NAME,
CHAPTER_POSITION,
CHAPTER_LENGTH,
CHAPTER_START_TIME);
// 2. Track the MediaHeartbeat.Event.ChapterStart event when the chapter starts to play.
this._mediaHeartbeat.trackEvent(MediaHeartbeat.Event.ChapterStart,
chapterDataInfo,
chapterMetadata);
.......
.......
// 3. Call trackPlay() when the playback actually starts, i.e., when the
// first frame of the main content is rendered on the screen.
this._mediaHeartbeat.trackPlay();
.......
.......
// 4. Track the MediaHeartbeat.Event.SeekStart event when the user begins
// to seek out of the chapter with the intent to skip it.
this._mediaHeartbeat.trackEvent(MediaHeartbeat.Event.SeekStart);
.......
.......
// 5. Track the MediaHeartbeat.Event.SeekComplete event when the user seeks
// out of the chapter with the intent to skip it.
this._mediaHeartbeat.trackEvent(MediaHeartbeat.Event.SeekComplete);
.......
.......
// 6. Track the MediaHeartbeat.Event.ChapterSkip event because the user
// skipped the chapter by seeking out of it in the steps above.
this._mediaHeartbeat.trackEvent(MediaHeartbeat.Event.ChapterSkip);
.......
.......
// 7. Call trackComplete() when the playback reaches the end, i.e., completes
// and finishes playing.
this._mediaHeartbeat.trackComplete();
........
........
// 8. Call trackSessionEnd() when the playback session is over. This method must be
// called even if the user does not watch the media to completion.
this._mediaHeartbeat.trackSessionEnd();
........
........
recommendation-more-help
c8eee520-cef5-4f8c-a38a-d4952cfae4eb