mediacodec

Reprint please the head source link and the tail two-dimensional code together reprint, this article from countercurrent fish yuiop:http://blog.csdn.net/hejjunlin/article/details/53386117I am recently participating in the CSDN 2016 Blog Star Award, come, drive, quickly help vote! Time: November 28 to December 18 You can vote for me every day. Address: Http://blog.csdn.net/vote/candidate.html?username=hejjunlinThe previous chapter introduces Mediacodec's description and status diagram, starting t

In the Android multimedia class, Mediamuxer and Mediacodec are relatively young, they are JB 4.1 and JB 4.3 only introduced. The former is used to mix audio and video to generate multimedia files. The disadvantage is that only one audio track and one video track can be supported at this time, and only MP4 output is supported. But since it is a new thing, I believe that after the version should be a big improvement.

Suppose what we need to do is a media file synthesizer, the function is to intercept a number of pieces of media files in some fragments, and then the fragments into a new media files, then we can use MEDIACODEC to help us do something.The general logic of Mediacodec for encoding and decoding is this:The invocation logic for the main function is as follows:From the figure, we first use the decoder to take o

Reprint please the head source link and the tail two-dimensional code together reprint, this article from countercurrent fish yuiop: http://blog.csdn.net/hejjunlin/article/details/53183718Preface: The previous sections are introduced CAMERA2 related, for CAMERA2 preview to display the image on the Surfaceview, as well as the video, always refresh the current image area. Back to the earliest introduction of the MediaPlayer play video, these are inseparable from the important role

Chapter 4-android MediaCodec: Determine whether hard decoding code is supported.-androidmediacodec Public boolean issuppmedimediacodecharddecoder () {boolean isHardcode = false; // read the system configuration File/system/etc/media_codecc.xml file File = new File ("/system/etc/media_codecs.xml "); inputStream inFile = null; try {in = new FileInputStream (file);} catch (Exception e) {// TODO: handle exception} if (inFile! = Null) {XmlPullParserFactory

AAC raw code stream can not play directly, generally need to be encapsulated into ADTS format to use again, the blogger in Android with MEDIACODEC encoded AAC is RAW format, In order to save as. AAC format, you need to increase the ADTS header so that it can be played directly via VLC or Windows Media player. Now the online collection of information and code summed up, in preparation for their future reference, but also to share with the needs of coll

http://blog.csdn.net/halleyzhang3/article/details/11473961Http://www.360doc.com/content/14/0119/10/8122810_346350456.shtmlAndroid uses MEDIACODEC to implement video hard decodingThis article tells you how to use the Android standard API (MEDIACODEC) for hardware encoding and decoding of video. The routine starts with the camera capture video, then H264 encoded, then decoded, and then displayed. I'll try to

* Due to work needs, need to use MEDIACODEC to achieve playback and transcode functions, so in the learning process translated Google's official Mediacodec API document, due to the author's level limit, the text inevitably have errors and inappropriate, hope to criticize.* Reprint Please specify source: http://www.cnblogs.com/roger-yu/OverviewThere are three states within the

This article tells you how to use the Android standard API (MEDIACODEC) for hardware encoding and decoding of video. The routine starts with the camera capture video, then H264 encoded, then decoded, and then displayed. I'll try to be brief and clear, not to show the irrelevant code. However, I do not recommend that you read this article, and do not recommend that you develop such applications, but should instead develop some poke fish, birds, enjoyab

I set MEDIACODEC profile, has not been successful, read the source after the problem is found: https://android.googlesource.com/platform/frameworks/av/+/437ced8a14944bf5450df50c5e7e7a6dfe20ea40/media/ Libstagefright/acodec.cpp After you set up profile, you also set a Level property, but the current SDK does not provide this Key. Even if you manually set the level, like this: Mediacodec codec = Createencod

The first four articles, respectively, introduced the basic knowledge of audio development, how to capture a frame of audio, how to play a frame of audio, how to store and parse WAV file, it is suggested that interested small partners to read, this article focuses on how to encode and decode a frame of audio data.1. Android's official Mediacodec APIFirst, let's look at the official Android audio codec API, the Med