flv extract

Some teaching videos have been downloaded from Youku. To put them in mp3, You need to extract audio data from these flv files and store them in mp3 format. The operating system is centos 5.3. After searching online, find the following method:Method 1: Use mencoder, for example, mencoder-of avi-nosound-ovc copy in. flv-o out_just_vid.aviMethod 2: Use mplayer, for

The following content of this article will be updated here: "http-flv Live Module (nginx-http-flv-module) based on Nginx-rtmp-module module" continued. Note: Many of the configurations below are no longer available because the implementation is somewhat different from the earlier implementations. In order to see the history of the entire project, it has been retained, and the following update mentions why s

Nginx-rtmp-mudule rtmp is an excellent car-eye-http-flv-module is a streaming media server modified on Nginx-rtmp-mudule rtmp basis, in addition to support Flash player, Players that are now common are also supported. A perfect way to achieve the HTTP mode of FLV Live Function.This article briefly introduces the main functions and use of the module:Function All features provided by Nginx-rtmp-modul

, need Samplingfrequencyindex This information, samplingfrequencyindex the most accurate information is in Audiospecificconfig , so the audiospecificconfig is parsed and Samplingfrequencyindex is obtained. In this step, you can completely extract the audio information and data from the FLV file and send it to the audio decoder for normal playback. Video Tags If the tagtype==9 in the tag package, it means t

Copy CodeThe code is as follows: function Bigendian2int ($byte _word, $signed = False) {$int _value = 0;$byte _wordlen = strlen ($byte _word);for ($i = 0; $i {$int _value + = Ord ($byte _word{$i}) * POW ($byte _wordlen-1-$i));}if ($signed){$sign _mask_bit = 0x80 if ($int _value $sign _mask_bit){$int _value = 0-($int _value ($sign _mask_bit-1));}}return $int _value;}function GetTime ($name) {if (!file_exists ($name)) {Return}$flv _data_length=file

Mencoder "/home/guo/Videos/hp. flv "-o"/home/guo/Videos/hp/outfile. flv "-of lavf-oac mp3lame-lameopts abr: br = 56-ovc lavc-lavcopts vcodec = flv: vbitrate = 5000: mbd = 2: mv0: trell: v4mv: cbp: last_pred = 3: dia = 4: cmp = 6: vb_strategy = 1-vf scale = 512:-3-ofps 12-srate 22050-ss-endpos Mencoder "/home/guo/Videos/hp. avi "-o"/home/guo/Videos/hp/outfile.

format, this is the decoder common format, is AAC's pure ES stream to be packaged into ADST format AAC file, The decoder will play properly. It is in packing ADST, need Samplingfrequencyindex This information, samplingfrequencyindex the most accurate information is in Audiospecificconfig , so the audiospecificconfig is parsed and Samplingfrequencyindex is obtained. In this step, you can completely extract the audio information and data from the

Step One: We open the PPT 2007 software, and then we click on the PowerPoint option in the upper right corner---common---tick "then we'll find the Developer tab", OK now there's a developer tab in the PPT menu. Step Two: Now we create a Shockwave Flash Object object instance in ppt, then we then in "Development toolbar"-"Control"---"Other controls", then we click "Shockwave Flash Object", click OK, If there is to show that the same is xxx. Now open the interface we click to s

The AMF (Action message Format) is a common binary encoding mode for Flash and server communications, which is highly efficient and can be transmitted at the HTTP level. Many flash webgame now use such a message format.The AMF protocol is based on the HTTP protocol.Its content processing process is roughly like this:1. Get the HTTP request (requests) stream from the client.2. Convection for serialization (deserialize), get the data that the server-side program can recognize and establish a respo

. A function that contains the processing of PCM audio sampling format. * (3) The Code stream analysis program. Nalu can be detached and parsed. * (4) AAC Code Stream analysis program. Adts frames can be detached and parsed. * (5) FLV Encapsulation Format analysis program. You can separate the MP3 audio stream from the FLV. * (6) UDP-RTP Protocol analysis program. You can analyze the udp/rtp/mpeg-ts packets

. RedirectStandardOutput = true; // redirect standard outputP. StartInfo. RedirectStandardError = true; // redirect error outputP. StartInfo. CreateNoWindow = true; // you can specify not to display a window. P. Start ();// P. StandardInput. WriteLine (command); // you can also use this method to export the command to be executed.// P. StandardInput. WriteLine ("exit"); // you must remember to add Exit. Otherwise, the next line of program will become available. // You must create the code that e

FLV MP4 makes it easy to transfer downloaded video from the network to mobile hardware, MP4, IPod, IPhone, PSP, PSV, PS3, ipad, and so on. Given the need for FLV MP4 to be compatible with mobile devices, in the FLV MP4 process, conversion speed, conversion quality and good compatibility on mobile hardware are undoubtedly some of the most important aspects of the

In the huge Baidu to find the resources I need information, but the description of the network can not be resolved, the occurrence of such problems are many people, but did not get an accurate solution! Through the individual aspects of the trial, in fact, very simple to solve the problem of audio files can not be played, if you will encounter such problems in the future, you can follow my way to deal with: If 3GP file, add the ". 3gp" MIME type to "VIDEO/3GPP" directly in the MIME type of serv

Insert an FLV file 1. Open the HTML document, click the "Insert" menu, select "Media" command, and select "FLV" Item in the Pop-up submenu: Figure 1 2. When the "FLV" Item is selected, the Insert FLV dialog box pops up, as shown in the following illustration: Figure 2 ① "Video Type" selecti

　　 What we will see in this article is the full user manual for the FLV Player 4 free Software! 　　Begin Run your FLV or media files 　　Stop Stop running your FLV or media files 　　Stay Temporarily suspend running your FLV or media files. Press more continuously to play from the stay point 　　Rewind Belt Rewind you

need to do a lot of work in the background, such as content preparation, editing, and processing. In this case, if the bandwidth is really wide, why don't you directly use Internet resources and user viscosity to do your own thing? How nice is it to support YouTube on the Symbian platform? So I searched from Google and found an open-source project, mobiflv. This developer has been developing mobiflv for a long time and has indeed done a lot of valuable work. From the code point of view, he uses

This series of articles navigation Quick Start for ffmpeg under Windows FFmpeg parameter explanation MEncoder and FFmpeg parameter detailed (Java processing video) Java generated video thumbnails (ffmpeg) Using FFmpeg to convert video files into FLV finishing Java Video processing MEncoder Java Video Processing Ffmped+mencoder 1, first download ffmpeg 2, extract the extracted ffmpeg.exe and PthreadGC2.dll

FLV Player Download-Flash Video Player Download-FLV Player Download With the popularization of FLV videos on the Internet, a good FlV video file player has become a necessary tool for podcasts and netizens. In this article, NetFetch recommends downloading three flvplayers. Adboe Flash Player 9 download: Adboe Flash Pla

-- Extract the number if object_id ('dbo. get_number2 ') is not nulldrop function DBO. get_number2gocreate function DBO. get_number2 (@ s varchar (100) returns varchar (100) asbeginwhile patindex ('% [^ 0-9] %', @ s)> 0 beginset @ s = stuff (@ s, patindex ('% [^ 0-9] %', @ s), 1, '') endreturn @ sendgo -- test print DBO. get_number2 ('Ha abc123abc') go--123 ------------------------------------------------------------------

PHP extract () function, its main function is to expand the array, the key name as the variable name, the element value is the variable value, it can be said that the operation of the array provides another convenient tool, for example, can be easily extracted POST or person _get elements, the content submitted to the form can not be assigned one by one $_POST);//相当于$username$_POST['username'];//$password$_POST['password'];?> ').