Recently, I am working on multimedia development on Android. First, I need to port FFMPEG on Android. As a result, I have been searching for articles on the Internet for a long time, the generated library file is only 1.6kb in size,
This can be an emergency for me.
Finally, in my system Ubuntu 10.04, Android ndk is Android ndk r5b, And the libffmpeg. So file of 1.9m size is successfully compiled. Recently I decided to write down the compilation proces
2013-11-16 00:04 45621 people read reviews (231) Favorites report FFmpeg Coding and decoding learningDirectory (?) [+]Directory (?) [+]In the CSDN on this period of time, contact with a lot of people in the same industry, especially the use of FFmpeg audio codec, some have many years of experience in the "Great God", some have just started to learn beginners. In the process of discussing with you, I sudd
I am pleased to announce that FFMPEG can now be built unpatchedThe iPhone. The process is still not entirely without pain, however.Here's how it's done:1. download and install the iPhone sdks 3.1.2. Get the latest gas-Preprocessor and install it in/usr/local/binOr some other directory in your $ path.Http://github.com/yuvi/gas-preprocessor/3. Get the latest FFMPEG from SVN (minimum r20151 ).4. Configure
1. Download the following three files first to www.3gpp.org:-Http://www.3gpp.org/ftp/Specs/2004-03/Rel-5/26_series/26204-520.zip-Http://www.3gpp.org/ftp/Specs/2004-03/Rel-5/26_series/26073-530.zip-Http://www.3gpp.org/ftp/Specs/2004-03/Rel-5/26_series/26104-540.zipExtract each of the following folders:-26204-520.zip into Libavcodec/amrwb_float-26073-530.zip into Libavcodec/amr-26104-540.zip into Libavcodec/amr_float2. Recompile ffmpeg, remember to add
In the CSDN on this period of time, contact with a lot of people in the same industry, especially the use of FFmpeg audio codec, some have many years of experience in the "Great God", some have just started to learn beginners. In the process of discussing with you, I suddenly found a problem: there seems to be an insurmountable gap between the "great God" and the beginner. The "Great God" is highly skilled and explores esoteric issues, while beginners
Transferred from: http://www.cnblogs.com/dwdxdy/p/3240167.html 1. Separating the video audio streamFfmpeg-i input_file-vcodec Copy-an output_file_video // split video stream ffmpeg-i input_file-acodec copy-vn ou Tput_file_audio // separate audio streams 2. Video re-useFfmpeg–i test.mp4–vcodec copy–an–f M4V test. the ffmpeg–i test.avi–vcodec copy–an–f m4v test. the 3. Video transcoding352*278 –an–f M4
Http://blog.sina.com.cn/s/blog_8cfe05150100uhm2.html
The interfaces of the FFMPEG library are all C functions, and the header file does not have the extern "C" Declaration. Therefore, you should pay attention to calling the FFMPEG function in the CPP file.Generally, a library written in C can be used by C/C ++ at the same time.# Ifdef _ cplusplusExtern "C "{# Endif
# Ifdef _ cplusplus} // Endof exter
.
Decode_video (InputStream *ist, Avpacket *pkt, Int*got_output), decoding in InputStream, Single-threaded and multi-threaded chip decoding walk Vctx->codec->decode, multi-threaded frame decoding go ff_thread_decode_frame.
Arrows are pointer reference relationships, and straight lines are parallel relationships. Hehe, we can look at the code, here to draw, that is to show that they have a connection.
In addition, the synchronization problem, we should also pay attention to.
Here's a picture h
This article uses a test program to play the local file and RTSP video stream based on the FFMPEG dynamic library.
Reference: http://blog.csdn.net/leixiaohua1020/article/details/8652605,
Http://blog.csdn.net/guanghua2_0beta/article/details/37578299
Create a project, refer to the previous article: Creating.
The Code is as follows. A few changes have been made on the basis of the reference document, mainly to replace some functions of the old
FFmpeg programming study NOTE 2: audio re-sampling, ffmpeg Study Notes
The core function swr_convert of ffmpeg for Implementing Audio re-sampling is very powerful. However, the comment of ffmpeg is too simple and such problems often occur in applications, in fact, swr_convert is also applied after the first execution
As we all know, ffmpeg is a video stream software. we can install ffmpeg in linux. This article mainly introduces how to install ffmpeg extension in PHP5.3 under Centos6.5, for more information, see. As we all know, ffmpeg is a video stream software. we can install ffmpeg in
[This article is a complex topic of FFMPEG. It will be quite cool to write]
[Different transcoding environments may have different code flows]
First popularized:
Timestamp, DTS (Decoding time stamp), PTS (presention time stamp), CTS (current time stamp ).
The timestamp in ffmepg is in microseconds and is related to the timebase variable. It is used as the time benchmark granularity of DTs and PTS, and the value will be large.
Among them, the av_resc
During this period of time on csdn, many people in the same industry, especially those who use FFMPEG for video/audio encoding/decoding, some of which have many years of experience ", some are just beginners. During my discussion with you, I suddenly found a problem: There seems to be an insurmountable gap between the "Great God" and beginners. The "Great gods" are superb, exploring profound issues, while beginners are still at the entry stage. What i
Http://blog.csdn.net/leixiaohua1020/article/details/15811977
During this period of time on csdn, many people in the same industry, especially those who use FFMPEG for video/audio encoding/decoding, some of which have many years of experience ", some are just beginners. During my discussion with you, I suddenly found a problem: There seems to be an insurmountable gap between the "Great God" and beginners. The "Great gods" are superb, exploring profou
My environment:Os:windows 7 64-bitWamp:2.1aphp:5.3.3 (previously 5.3.13)Projects need to use ffmpeg-php to implement the upload video transcoding functions, but found a lot of information did not put ffmpeg-php configuration. Therefore, write a blog to help people solve the problem.Preface: I also looked for the data u
During this period of time on csdn, many people in the same industry, especially those who use FFMPEG for video/audio encoding/decoding, some of which have many years of experience ", some are just beginners. During my discussion with you, I suddenly found a problem: There seems to be an insurmountable gap between the "Great God" and beginners. The "Great gods" are superb, exploring profound issues, while beginners are still at the entry stage. What i
Http://dranger.com/ffmpeg/tutorial02.html
According to the code in the study found that the author used SDL1.2 is outdated, the SDL official website under the SDL2.0 version,
found that the Sdl_setvideomode function and the sdl_overlay structure within the tutorial02 have been deprecated,
After a Google and SDL demo study, the following code can be compiled
TUTORIAL02.C//A pedagogical video player that would stream through every video frame as fast a
Intercepting video specifies frames as pictures, and PHP ffmpeg extensions are perfectly implemented:
$movie = new Ffmpeg_movie ($video _filepath);$ff _frame = $movie->getframe (1);$GD _image = $ff _frame->togdimage ();$img = "./test.jpg";Imagejpeg ($gd _image, $img);Imagedestroy ($GD _image);
But here's the problem, the video that the smartphone takes, because the camera is in a different direction, the
The simplest mobile terminal example based on FFmpeg: Windows Phone HelloWorld and ffmpeghelloworld
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List of the simplest FFmpeg-based mobile-end example series:
The simplest Mobile End example based on FFmpeg: Android HelloWorld
The simplest example of mobile terminal based on
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