Find a FFmpeg support h264 encoding, PHP call exec take advantage of ffmpeg transcoding time too long, CPU utilization of more than 80%, ask how to solve.
transcoding command also do not know what the meaning of the surface parameters?
$command='..\ffmpeg\bin\ffmpeg.exe -i ' . $file . '.' . $ext . ' -vcodec libx264 -vprofile main -preset slow -b:v 400k -maxrate 400k -bufsize 800k -vf scale=-1:480 -threads 0 -acodec libvo_aacenc -ab 128k ' .$file . '.mp4
') {
unsigned int(8) data[];}
Calculate the free space box size:
Size occupies 32 bits, 4 bytes;
Type occupies 32 bits, 4 bytes;
Each data occupies 8 bits and 1 byte;
3. Media Data box
Aligned (8) Class mediadatabox extends box ('mdat '){
Bit (8) data [];
}
Calculate the size of the media data box:
Size occupies 32 bits, 4 bytes;
Type occupies 32 bits, 4 bytes;
Each data occupies 8 bits and 1 byte;
4. Movie box
Aligned (8) Class moviebox extends box ('moov '){
}
Calculate the mov
The path to the java siege lion (Android)-MP3, MP4, photography, internationalization, style themes, image movement and scaling, android-mp3
I. MP3 player
View the Android API documentation to see the MediaPlayer status transition diagram:
Exercise:
Package com.shellwaygateplayer; import java. io. file; import java. io. IOException; import android. support. v7.app. actionBarActivity; import android. telephony. phoneStateListener; import android. tele
Add mp4 video and iosuiviewmp4 video to iOS UIView
Add the following code to the ViewController. h file:
# Import
@ Property (nonatomic, retain) MPMoviePlayerController * movieController; // Add attributes of movieController
Add the following code to the ViewController. m file:
1 @ synthesize movieController; // synthesize movieController, automatically generate set, get method 2 NSURL * videoUrl = [[NSBundle mainBundle] URLForResource: @ "clear
\ fifth day-servlet development and ServletConfig and ServletContext object \12-web How to read a resource file from a common Java program in the application. mp4;Multi-layer, DAO in order to get the configuration parameters in the resource file;Get ServletContext in the Doget method in the servletServletContext context = This.getservletcontext ();The context object is then passed to the DAO, so the coupling is high and unreasonable.So: How to pass th
I found a ffmpeg code that supports h264 encoding. php calls exec to use ffmpeg for a long transcoding time and the CPU usage exceeds 80%. how can I solve this problem. What are the meanings of the parameters in the transcoding command? {Code...} found a ffmpeg code that supports h264 encoding. php calls exec to use ffmpeg for a long transcoding time and the CPU usage exceeds 80%. how can this problem be solved.
What are the meanings of the parameters in the transcoding command?
$ Command =
Step 1: First open it in your computer and click "computer" --- "tools" --- "Folder Options ";Folder OptionsFind"View"--"Hide folders", Select display;Hide foldersStep 2: Tencent Video, search for the video you want, wait for it to buffer, and click"Arrow"Button, the third to the last, and then select settings.SetStep 4:Set", Select"Download settings", View the location of the video playback cache record, as shown in the
Http://blog.csdn.net/eightdegree/article/details/7425811
After reading the example muxing. C provided by FFMPEG during this time, I slightly changed the source code to generate an MP4 file. The audio uses AAC encoding and the video uses H.264 encoding. The code is very simple and I will not explain it. The Code is as follows.
In the future, we will continue to write how to encode the audio and video data collected in DirectShow and generate
Classic player foobar2000 v1.3.7 support MP4 DASH
foobar2000 1.3.7 Update log is as follows:
• Increased support for MP4 dash files
• Improved DirectSound low latency adjustment output behavior
• Fixed some issues with previous versions
foobar2000 foobar2000 is a classic professional digital audio playback tool under the Windows platform, built-in popular audio format, including playback
It's hard. After one months of ...
Purpose: From an AVI transcoding to Mp4,avi (Video encoder: MPEG4, audio codec: MPEG2 audio,), MP4 (Video encoder: H264/AVC, Audio encoder: MPEG2 audio)
As a result, the basic can be, the video has a little problem, audio can be. Here first put the code here, then slowly improve it, the audio must be resampled, the video is to be re-scaled ... There are also audio and vide
How to play the rmvb mp4 mkv video file in Fedora 22?
This is a problem that occurs after the Fedora system is installed. There is a tutorial on how to solve the problem of playing rmvb video in Fedora 21 on the Internet. In fact, Fedora 22 is also applicable, but Fedora 22 changes Yum to dnf, so you only need to change the command.
Simply install the rpmfusion source.
Sudo dnf install -- nogpgcheck http://mirrors.163.com/rpmfusion/free/fedora/rpmf
also be shown here yo.3, we here to "the Human Walk" and "dance partner" MV to do audio extraction cases. After the file is added, select the output format, we choose the format of the audio format in the output format, you can choose Yo, small series is the more common MP3 format.4, at this time, if our output format is not successfully displayed in the software main interface, and then we can start the conversion, when the video file appears below the progress bar, the software began to conve
This article describes how php converts a video to an mp4 format using memcoder. it involves php video file operations and has some reference value, for more information, see the following example. Share it with you for your reference. The specific implementation method is as follows:
The code is as follows:
Convertize ("some-input-video.avi", "output.mp4 ");Function convertor ($ input, $ output ){Echo "Converting $ input to $ output";$ Command =
This article describes how php converts a video to an mp4 format using memcoder. it involves php video file operations and has some reference value, for more information, see the following example. Share it with you for your reference. The specific implementation method is as follows:
The code is as follows:
Convertize ("some-input-video.avi", "output.mp4 ");Function convertor ($ input, $ output ){Echo "Converting $ input to $ output";$ Command =
/local/src/nginx-rtmp-module-master Note that the third-party module uses the absolute path specified by the Add-moduleYamdiTar xzvf yamdi-1.4.tar.gzCD yamdi-1.4Make make installHow to use: Yamdi-i input.flv-o out.flv/usr/local/src all the files are in this directoryTar xzvf nginx_mod_h264_streaming-2.2.7Tar xzvf nginx-rtmp-module-masterYou can specify the path when compiling--with-http_flv_module--with-http_mp4_module--add-module=/usr/local/src/nginx_mod_h264_streaming-2.2.7 \-
First, install the installation rpmfusion sourcehttp://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-21.noarch.rpm http://download1.rpmfusion.org/ nonfree/fedora/rpmfusion-nonfree-release-21.noarch.rpmFlush cache After installation, install some necessary decoderssudo yum install gstreamer1-plugins-bad-free-extras.i686 gstreamer1-plugins-base-tools.i686 gstreamer1-plugins-ugly.i686 gstreamer1-plugins-bad-freeworld.i686 gstreamer1-libav.i686The video player comes with a bit weak, ins
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