compress mp4 file

Send a summary post for the information used in the previous period. The first is the most convincing ISO standard documentation: ISO/IEC 14496-12, coding of audio-visual objects-ISO base media file format ISO/IEC 14496-14, coding of audio-visual objects-MP4 File Format Here are a full set of standard documents related to ISO/IEC 14496 and

Please refer to the question of downloading MP4 files in PHP. the file download is incomplete. function dl_file($file){ $len = filesize($file); $filename = basename($file); $file_extension = strtolower(substr(strrchr($filename,"."),1)); switch( $file_extension )

Php+ffmpeg implements the automatic transcoding of video into H264 standard MP4 file, Configuring the php.ini File File_uploads = on;//whether to allow the switch to upload files over HTTP. The default is on is open upload_tmp_dir;//File upload to the server where temporary files are stored, if not specified will be us

What file is MP4? MP4 is a very popular video format, I believe that everyone has seen the MP4 format of the video or film it? Today, many of the movies circulated online are MP4 format, with its good versatility in any media player can be smooth playback. But in fact, from

This is a creation in Article, where the information may have evolved or changed. Life goes on and on go Go go!!! A little busy, a little slack, continue. About the static file server implemented by Golang has been written before:Go combat –golang Implement static file server (file view, file upload,

The company's project needs to merge one image and one MP3 audio file into MP4 and play the video on HTML5. It was originally thought to be a very simple matter, so a simple FFMPEG command was quickly written for execution. FFmpeg-I 2.mp3-F image2-I 3.jpg-acodec AAC-strict-2-vcodec libx264-ar 22050-AB 128 K-AC 2-y 4.mp4 At the beginning, the merged

Storm AV 2015 do not play MP4 file Cause analysis This problem is estimated because this file is more special, so we need to make adjustments. Solutions In the Start menu, run the Storm audio integrated settings. Next, in the task on the left side of the open window, select Mpeg-4 decoding Settings, and click the Next button. Then, in the open window, chang

, you must first have a qsv format conversion tool. On the Internet, we can see that many people are looking for methods to convert qsv to MP4. However, due to the special qsv format, few tools can convert qsv files, if you really want to convert qsv to another format, you can try the quick Video Converter. In the latest version, the software has added the conversion functions of qsv and qlv formats, that is to say, this is the only tool found by xia

1, the web player can not play the problem Coding problems. Need is H.264 encoding, not this encoded in some Flash version or OS will not put out video problems, you can use 3GP, MP4 Video Conversion Wizard (Brvideoconverter) transcoding. 2, can not play at the bottom of the problem MP4 video has metadata, usually at the end of the file, and Flash read this

http://blog.csdn.net/qq_19079937/article/details/43191211Inside the MP4 structure, the HDLR field (specifically in ROOT->MOOV->TRAK->MDIA->HDLR) contains the stream is a video or audio or letter.FFmpeg Code:In the FFmpeg code, use the Codec->codec_type in the stream to determine what kind of flow the stream is.The 12th part of the ISO_IEC_14496 International standard is marked as follows:In the MP4

The specific steps for the server to increase the MIME type mapping setting in MP4 format are:　　Right-click Computer Management Services and Applications Internet Information Services (IIS) Manager select the IIS Web site that you developed click Add in the upper right corner of the MIME type under IIS options. Enter ". mp4" in the "Extension" box, enter "Application/octet-stream" in the "MIME type" box, an

When you use OPENCV to process a video, you cannot open a. mp4 file. Later the solution is to use Ffmpeg.exe to transcode the MP4 file to AVI file, and then processed. However, the transcoding process is relatively slow. Later view OpenCV source code, found that it is also u

Calculate the playback duration of an MP4 file. You can obtain the timescale and duration values in the mvhd box: Playback duration = duration/timescale The Unit is seconds ). The following describes the structure of mvhd.Movie header atoms-mvhd Movie header atom defines the features of the entire movie, such as time scale and duration. Its atom type is 'mvhd '. The mvhd structure is as follows: The fields

For an example of a MP4 length of 10 seconds, the structure may be as follows: Type:ftyp, size:24Type:mdat, size:8884701Type:mdat, size:136125Type:moov, size:4656 1 Ftyp A Ftyp describes the type of file, indicating which format it conforms to. It's usually MP4 format. There are many types of media that conform to this document, and the type of box entry is diffe

Html production simple framework webpage 2: implement the operation steps and source file download of your audio and video station (you can play the video playback code of mp4, avi, mpg, asx, and swf files ), The new video playback function is as follows: The left.html code of the left-side webpage is as follows: A definition list Playing videos in right6.html will be better.

Make sure that IIS is healthyThe specific steps for the server to increase the MIME type mapping setting in MP4 format are:Start > Control Panel > Administrative Tools > Internet Information Services (IIS Manager), MIME type > Add, enter. mp4 in the Extension box, enter "application/" in the MIME type box in the. Octet-stream "and then OK.The specific steps for the server to increase the MIME type mapping s

(Red Hat 4.4.7-3)Configuration: -- enable-libx264 -- enable-gplLibavutil 52. 48.101/52. 48.101Libavcodec 55. 39.101/55. 39.101Libavformat 55. 19.104/55. 19.104Libavdevice 55. 5.100/55. 5.100Libavfilter 90.100/90.100Libswscale 2. 5.101/2. 5.101Libswresample 0. 17.104/0. 17.104Libpostproc 52. 3.100/52. 3.100Hyper fast Audio and Video encoderUsage: ffmpeg [options] [[infile options]-I infile]... {[outfile options] outfile }...Use-h to get full help or, even better, run 'man ffmpeg' Php calls ffmp

A background: Users need to watch the video through flash or mobile phone, and most cameras are RTSP protocol, so need to do a relay. Resources: http://blog.csdn.net/firehood_/article/details/8813587 http://blog.csdn.net/firehood_/article/details/8783589 These two articles detail the Mp4v2 save the file and the 264 files through the rtmp live, the two aspects of interest can be directly read the two articles. This article is only read the two articles

wrapped. Default value is 0. This option is useful to avoid to fill the disk with many segment files, and limits the maximum number of segment files WR Itten to disk Towrap. (The number of slices is set to start overwriting, if set to 0 will not overwrite, the default value is 0.) This option avoids storing too many slices on disk and can limit the number of slices written to disk. ' Start_number number ' Start The playlist sequence number from number. Default value is 0. (The value of sequence