在android上显示音频和视频内容
对于工作中的一个项目，我们正在让一家多媒体公司制作 7 x 3 分钟的电影 = 大约 21 分钟的视频。 （H.264/1280x720/1000kbps = 约 200 Mb）然后将其存储在 Samsung Galaxy S 上的 MicroSD 上。这些视频文件将由我正在开发的应用程序调用。 他们还将音频（画外音）中的所有文本录制为单独的文件 = 大约 60 分钟的音频（mp3 大小约为 60 Mb） 媒体总量约为 260 Mb。他们将在苹果电脑上工作。
我对多媒体知之甚少 - 尽管我显然拥有多媒体硕士学位 - 并且想知道是否有人可以帮助我回答其中一些问题？
如果存储在 4GB Micro SD 上，每个文件的最大合适大小是多少？
三星 Galaxy S 的最低显示质量是多少？
在设备上显示的最佳文件格式是什么？
谢谢
For a project in work, we are getting a multimedia company to make 7 x 3 minutes film = around 21 minutes of video. ( with H.264/1280x720/1000kbps = about 200 Mb) which will then be stored on a MicroSD on the Samsung Galaxy S. These video files will be called by an app that I am developing.
They will also record all the text in audio (voice-over) as a separate file = about 60 minutes audio (with mp3 size about 60 Mb)
Total media around 260 Mb. They will be working on a Apple computer.
I know very little about multimedia - even though I apparantly have a masters in it - and was wondering if someone could help me answer some of these questions?
What would be the max suitable size for each of the files if stored on a 4GB Micro SD?
What is the minimum quality for display on a Samsung Galaxy S?
What is the best file format for display on the device?
Thanks
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如果存储在 4GB Micro SD 上，每个文件的最大合适大小是多少？
文件大小是视频比特率和剪辑持续时间的函数。视频比特率通常与视频分辨率成正比。对于 21 分钟的剪辑，@ 8 Mbps，文件大小约为 (21 * 60 * 8) /8，即 1.2 GB。这对您来说应该没问题。
三星 Galaxy S 的最低显示质量是多少？
Galaxy SI 认为具有 WVGA 屏幕分辨率，但它最多可以解码 720P。即您可以运行分辨率为 1280x720 的视频。如果您正在谈论的特定 Galaxy S 具有 HDMI 输出，那么您可以继续使用 720P 内容。否则，在手机上您将看不到 720P 与 WVGA 播放之间的差异。
最适合在设备上显示的文件格式是什么？
Android 附带 H264/MP4 组合。如今，蓝光内容（高清视频）越来越流行。即 1080P / 720P H264/mkv 格式。如果手机支持 mkv，则可以使用此功能。否则请选择 MP4 格式的 720P H264。
沙什
What would be the max suitable size for each of the files if stored on a 4GB Micro SD?
File Size is a function of video bitrate and duration of the clip. Video Bitrate is usually proportional to Video Resolution. For a 21 minute clip, @ 8 Mbps, File Size would be ~ (21 * 60 * 8) /8, i.e. 1.2 GB. This should be okay for you.
What is the minimum quality for display on a Samsung Galaxy S?
Galaxy S I think has WVGA Screen Resolution, however it can decode up to 720P. i.e. You can run a video of resolution 1280x720. If the particulr Galaxy S you are talking about, has HDMI output, then you can go ahead with 720P Content. Otherwise, on phone you wont see the difference between 720P Vs WVGA playback.
What is the best file format for display on the device?
Android comes with H264/MP4 combination. These days bluray content (High definition video) is becoming popular. i.e. 1080P / 720P H264/mkv format. This you can use if the phone supports mkv. Otherwise go with 720P H264 in MP4.
Shash
祝你好运！
Good luck!