Android问题收集（10）
需求：在mediaprovider数据库中添加.mov后缀格式的视频文件
可以使用工具MediaInfo_GUI_0.7.67_Windows..exe 查看mov文件编码格式类型，可以到下载。
: D:\好歌曲学员合.mov
: QuickTime
编码设置ID
: 83.8 MiB
平均混合码率
: 11.3 Mbps
编码函数库
: Apple QuickTime
: 00:00:00:00
文件格式/信息
: Advanced Video Codec
: Main@L4.0
格式设置, CABAC
格式设置, ReFrames
: 2 frames
格式设置, GOP
: M=1, N=50
编码设置ID
编码设置ID/信息
: Advanced Video Coding
: 11.2 Mbps
: 1 920像素
: 1 080像素
: 25.000 fps
: 逐行扫描
bits/(pixel*frame)(数据密度)
: 82.8 MiB (99%)
: 苹果视频媒体处理程序 / Apple 替身数据处理程序
文件格式/信息
: Advanced Audio Codec
编码设置ID
Source_Duration/String
: 120 Kbps
: 128 Kbps
: Front: L R
: 48.0 KHz
: 有损压缩
: 909 KiB (1%)
Source_StreamSize/String
: 909 KiB (1%)
: 苹果声频媒体处理程序 / Apple 替身数据处理程序
: Time code
: QuickTime TC
TimeCode_FirstFrame
: 00:00:00:00
TimeCode_Settings
: 时间码媒体处理程序 / Apple 替身数据处理程序
06:08:38可以看到两个有用的信息
文件格式 : MPEG-4
格式简介 : QuickTime
需要修改的文件：frameworks/base/media/java/android/media/MediaFile.java，我们可以参考已有的视频格式添加
// Video file types
public static final int FILE_TYPE_FLV
public static final int FILE_TYPE_MP4
public static final int FILE_TYPE_M4V
public static final int FILE_TYPE_3GPP
public static final int FILE_TYPE_3GPP2
public static final int FILE_TYPE_WMV
public static final int FILE_TYPE_ASF
public static final int FILE_TYPE_MKV
public static final int FILE_TYPE_MP2TS
public static final int FILE_TYPE_AVI
public static final int FILE_TYPE_WEBM
public static final int FILE_TYPE_MOV
private static final int FIRST_VIDEO_FILE_TYPE = FILE_TYPE_FLV;
private static final int LAST_VIDEO_FILE_TYPE = FILE_TYPE_WEBM;
添加：public static final int FILE_TYPE_MOV = 52;& 这一行
addFileType(&MPEG&, FILE_TYPE_MP4, &video/mpeg&, MtpConstants.FORMAT_MPEG);
addFileType(&MPG&, FILE_TYPE_MP4, &video/mpeg&, MtpConstants.FORMAT_MPEG);
addFileType(&MP4&, FILE_TYPE_MP4, &video/mp4&, MtpConstants.FORMAT_MPEG);
addFileType(&MOV&, FILE_TYPE_MOV, &video/quicktime&, MtpConstants.FORMAT_MPEG);
addFileType(&M4V&, FILE_TYPE_M4V, &video/mp4&, MtpConstants.FORMAT_MPEG);
addFileType(&3GP&, FILE_TYPE_3GPP, &video/3gpp&,
MtpConstants.FORMAT_3GP_CONTAINER);
addFileType(&3GPP&, FILE_TYPE_3GPP, &video/3gpp&, MtpConstants.FORMAT_3GP_CONTAINER);
addFileType(&3G2&, FILE_TYPE_3GPP2, &video/3gpp2&, MtpConstants.FORMAT_3GP_CONTAINER);
addFileType(&3GPP2&, FILE_TYPE_3GPP2, &video/3gpp2&, MtpConstants.FORMAT_3GP_CONTAINER);
addFileType(&MKV&, FILE_TYPE_MKV, &video/x-matroska&);
addFileType(&WEBM&, FILE_TYPE_WEBM, &video/webm&);
addFileType(&TS&, FILE_TYPE_MP2TS, &video/mp2ts&);
addFileType(&AVI&, FILE_TYPE_AVI, &video/avi&);
addFileType(&FLV&, FILE_TYPE_FLV, &video/flv&);由
文件格式 : MPEG-4
格式简介 : QuickTime
信息可知，添加一行：addFileType(&MOV&, FILE_TYPE_MOV, &video/quicktime&, MtpConstants.FORMAT_MPEG);
还要修改一个函数：
public static boolean isVideoFileType(int fileType) {
return (fileType &= FIRST_VIDEO_FILE_TYPE &&
fileType &= LAST_VIDEO_FILE_TYPE)
|| (fileType &= FIRST_VIDEO_FILE_TYPE2 &&
fileType &= LAST_VIDEO_FILE_TYPE2)
|| (fileType == FILE_TYPE_MOV);
}添加条件：fileType == FILE_TYPE_MOV
可以把数据库删除：rm -rf /data/data/com.android.providers.media/databases/
然后重启手机，就可以在video视图中找到.mov的视频
当然以上代码可以作下优化，
public static final int FILE_TYPE_WEBM = 30;
public static final int FILE_TYPE_MOV = 31;
private static final int FIRST_VIDEO_FILE_TYPE = FILE_TYPE_FLV;
private static final int LAST_VIDEO_FILE_TYPE = FILE_TYPE_MOV;那么涉及到后面就需要修改
// Image file types
public static final int FILE_TYPE_JPEG
public static final int FILE_TYPE_GIF
public static final int FILE_TYPE_PNG
public static final int FILE_TYPE_BMP
public static final int FILE_TYPE_WBMP
public static final int FILE_TYPE_WEBP
private static final int FIRST_IMAGE_FILE_TYPE = FILE_TYPE_JPEG;
private static final int LAST_IMAGE_FILE_TYPE = FILE_TYPE_WEBP;
// Playlist file types
public static final int FILE_TYPE_M3U
public static final int FILE_TYPE_PLS
public static final int FILE_TYPE_WPL
public static final int FILE_TYPE_HTTPLIVE = 44;
public static final int FILE_TYPE_DASH
private static final int FIRST_PLAYLIST_FILE_TYPE = FILE_TYPE_M3U;
private static final int LAST_PLAYLIST_FILE_TYPE = FILE_TYPE_DASH;
// Drm file types
public static final int FILE_TYPE_FL
= 51;修改后的文件：
参考知识库
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MPV 文件扩展名
文件扩展名查询
Moving Picture Experts Group
文件类型：
MPEG Elementary Stream Video File
什么是一&nbsp.mpv&nbsp文件？
一个MPEG基本流中的视频文件的内容由原始的，未压缩的视频数据。存储在一个MPEG基本流中的视频文件中的此视频数据集成了MPEG-2视频数据存储的规格，这些MPEG基本流中的视频文件也实现与主要用于保存在MPV文件格式的MPEG-2视频内容编码标准。这些MPEG基本流中的视频文件被用于处理原料，从存储在其中的其他类似设备的数字视频录像机记录的视频剪辑输出未压缩的视频内容。这些MPEG基本流中的视频文件也被用来存储该原始的，未压缩的视频内容转换成所支持的数字视频记录装置。这些MPEG基本流的视频文件不会嵌入音频数据。贴有延伸，这些MPEG基本流中的视频文件可以打开和使用与MPEG-2视频内容的支持实现数字视频播放器软件查看。所述VideoLAN的VLC媒体播放器软件具有版本的Mac和Microsoft Windows为基础的系统，可用于打开和查看这些MPV文件的内容。
如何打开&.mpv&文件？
推出&.mpv&文件，或者你的电脑上的任何其他文件，双击它。如果你的文件关联的设置是否正确，这意味着应用程序来打开你的&.mpv&文件将其打开。这是可能的，你可能需要下载或购买正确的应用程序。这也有可能是你有正确的应用程序在PC上，但&.mpv&文件还没有与它相关联。在这种情况下，当您尝试打开一个&.mpv&文件，你可以告诉Windows的应用程序是正确的该文件。从这时起，打开&.mpv&文件将打开正确的应用程序。
打开一个应用程序&.mpv&文件
Eltima Elmedia Player
Eltima Elmedia Player
Elmedia is a media player which is convenient and multifunctional which is design for Mac OS X. This software can play a videos and audio on different formats. The user may find graphical user interface the same as the popular I-tunes player of the apple. This software also supports almost any formats of animations. Thus, the user needs not to install third party software upon playing the animations. The user will not have a hard time upon editing and managing the file on the playlist. The smart list is also available which will allow the user create a special parameters which enable the software to match the file according to the given criteria. The Professional version of Elmedia will enable the user to download streaming video and flash animation straight through the user’s Hard Drive. This multifunctional Multimedia can support the Hypertext Markup Language version 5. This software runs in Mac OS X 10.4 up to Mac OS x 10.8.
CyberLink PowerDVD 12
CyberLink PowerDVD 12
CyberLink Power DVD 12 is a multimedia player that can play all media matters such as music, photos, movies and videos. This software can convert the Blu-ray format movies to High definition movies and 3 dimensional movies. The user may also enhance the videos for a more professional look, and enjoy the photos with an improve quality. The software has provided an "Instant scale" to make the files viewable without playing it. The user may also preview the photos inside a folder without opening the folders by using the "Instant View tool". CyberLink Power DVD 12 Runs on Window XP (SP3), Window Vista and Windows 7. The processor would be Pentium 4 3.2 GHz or higher, A VGA card (NVIDIA GeForce GTX 400 or higher/ AMD Radeon HD 6000 or higher) and 330 MB for the Hard Drive. An Internet connection is also required for the initial activation of the software.
Microsoft Windows Media Player
Microsoft Windows Media Player
Windows Media Player Playlist (WPL) is a computer file format that keeps multimedia playlists for video and audio collections. It is an owned file format utilized in Microsoft Windows Media Player versions 9 to 12. The fundamentals of WPL files are represented in
format. These
files can be accessed and utilized by the Nullsoft Winamp Media Player 5.6 application version as well as the Roxio Creator 2012 program. WPL files are also known as Windows Media Player playlist files, which are indicated by the Microsoft Windows Media Player or the other media players with support for WPL files as reference data when users open these playlist files and begin to access the content stored in it. The top-level aspect specifies that the file's elements go after the Synchronized Multimedia Integration Language (SMIL) structure. The information contained in these WPL files are directory locations to the video files and audio content chose by the creator of the
file, this enables the media player application to quickly and easily find and play the video and audio content from their directory locations.
VideoLan VLC Media player
VideoLan VLC Media player
VideoLan VLC Media player is a multi-media player software that is considered to be an open source and cross platform multimedia player with framework. Thus, a product that can play most of the standard files of multimedia plus CDs, DVDs and VCDs. It also plays different streaming protocols, supported applications or devices and webcams. There is also the ability to play audios of various codecs even if there are no codec packs included: MPEG-2, WebM, MP3, WMV and MKV. This software works on most Windows computers, Mac OS X PCs, Linux and well as Unix. In addition, there is descryption for DVD which is executed via the libdvdcss library. It also has playback control support for all computers compatible with it using libcdio or libvcdinfo. On Mac computers, this media player can grab audios and videos from EyeTV applications and other devices that capture EyeTV data. On GNU and Linux, it supports encoding cards that are compatible with V4L2 and MPEG-2 which are Visiontech Kfir and Hauppage WinTV-PVR 250-350.
要小心，不要重命名扩展&nbsp.mpv&nbsp文件，或任何其他文件。这不会更改文件类型。只有特殊的转换软件可以从一个文件类型更改一个文件到另一个。
什么是文件扩展名？
文件扩展名是一组三个或四个字符在文件名的末尾，在这种情况下，&nbsp.mpv.&nbsp文件扩展名告诉你它是什么类型的文件，并告诉Windows哪些程序可以打开它。窗户经常关联一个默认程序的每个文件的扩展名，这样，当你双击该文件，程序会自动启动。当该程序不再是您的PC上，有时可以得到一个错误，当您试图打开相关的文件。
建议ReviverSoft
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