Recently discovered some websites, can parse each big video website VIP. Think carefully, this is also a reptile, crawling is video data.First select a video site, I chose the film encyclopedia, and then choose the film soon released "a show."Analysis pageI'm using a Chrome browser, F12 into the view. Select the doc in the network and find the data from the main
searches for plugin from the Plugin-path specified in vlcrc and the modules and plugins directories in the current directory.Most VLC functions are implemented through plugin. By default, VLC has a large number of dynamic plug-ins. For example, the official VLC 0.8.6e has 210 plug-ins. To speed up startup, VLC caches the plugin list in % appdata % \ VLC \ cache. The plugins-Cache option is set to 0 to disable caching plugin.Open a UDP multicast stream. The default port is 4567.For the RTP proto
TS is all called mpeg2-ts, the abbreviation for "Transport Stream". The mpeg2-ts format is characterized by the requirement to decode independently from any segment of the video stream. Some website video is the TS format, the use
To put it simply, the MKV and AVI formats only encapsulate containers, which encapsulate video streams and audio streams. The container does not affect the image quality. What affects the quality is what is encapsulated in the container. Therefore, changing the container does not affect definition subtitle audio.
I would like to add some basic knowledge about video. Maybe there is something wrong with it.
F
**************************************** **************************************** ********************I. Ts Encapsulation1. IntroductionMPEG2 transport stream (TS Stream) is a data stream defined according to the ITU-T Rec. h.222.0 | ISO/IEC 13818-1 protocol.To transfer and store the encoding data of one or more programs in an environment where serious errors may occur.
bytes of the access unit from the decoding buffer.
3) Audio and video synchronization: Pts/dts + SCR (System reference clock), System time clock
4. TS Stream (transport stream transmit stream)
1) The TS Stream consists of a TS Package (188 bytes), the TS package is on the
First, Introduction
The MPEG2 system is used for AV synchronization and time labels for system clock recovery in the 3 levels of es,pes and TS respectively.
On the TS layer, the TS header information contains the program Clock Reference PCR (Programme clock Reference),
It is used to recover the system timing clock STC, which is consistent with the encoder end.
In
Slice generates m3u8 List command:
ffmpeg-i input.mp4-c:v libx264-c:a aac-strict-2-F HLS output.m3u8
The length of the default per piece (that is, a TS file) for this conversion command is the only last 5 piece of information that is saved by default in the 2s,m3u8 list file, that is, the player can only broadcast the last 5 TS video files in the pull stream.
Thi
RMA provides a more thorough approach.
That is, the RM file is separated.
0 audio stream RealAudio
1. Video Stream realvideo
2 event stream realevents
Then, we discard the 2 event stream (realevents) and combine the 0 audio stream RealAudio and the 1 Video Stream realvideo into a complete video file (
Recently, users have reflected the Windows system RM/RMVB video file corruption, the user downloaded movie video files can not be viewed. RMVB format with outstanding quality and the support of many excellent software (such as Easy RealMedia Producer), under the lower average bit rate such as 400-500kbps, XviD and DivX picture quality is almost impossible to view
Writer: chnechen (modified on)
Software required:1. tmpgenc plu 2.53/2.54 (commonly known as: Japan)2. HappyShow V4.11 (or K-Lite Mega Codec Pack V1.40)I personally think K-Lite Mega Codec Pack is better. Unfortunately, the K-Lite Mega Codec Pack is available in English,So I found HappyShow V4.11 again, and the two software looks almost the same. I don't know if HappyShow is a K-Lite Mega Codec Pack Chinese character)3. nero
Specific Method:1. Install the HappyShow V4.11 player first. Be sure to
RM/RMVB is the most common video file format, now network video resources are in the RM/RMVB format, we will download video files online, I believe that most users of RM/RMVB will not feel unfamiliar. But the use of the process wi
The network video you are viewing now basically exists in RM format or RMVB format, our win7 system computer in the use of the process may encounter video file is damaged, then appear such a situation everyone's video file can not watch, some do not know how to solve friends will be more worried, Then encounter such a
RM/RMVB is the most common video file format, now network video resources are in the RM/RMVB format exists, we will download video files online, I believe most users will not feel strange to rm/rmvb. But the use of the process wil
The code snippet is as follows:2. mpg formatThe code snippet is as follows:3. smi formatThe code snippet is as follows:4. rm formatThe code snippet is as follows:5. WMV FormatThe code snippet is as follows:/Nsmp2inf. cab # version = 6,4, 5,715 "standby =" loading Microsoft Windows Media Player components... "type =" application/X-oleobject "align =" right "hspace =" 5 ">Reply6.wma formatIn 7. Windows Media Player series (different panel styles)Compreh
The idea is to first obtain the file type and select different webpage player codes according to the type .. 3, 5, go, 2 ..... at the same time, in order to reuse the code in the future, a general call function is written. facilitate future calls in other systems ..
The source code is as follows:
Copy codeThe Code is as follows: Sub SelPlay (strUrl, strWidth, StrHeight)
Dim Exts, isExt
If strUrl IsExt = LCase (Mid (strUrl, limit Rev (strUrl, ".") + 1 ))
Else
IsExt = ""
End If
Exts = "avi, wmv, a
viewing click link.
[5.05.07.22]
Outline and basic knowledge of audio and video
Basic audiovisual knowledge includes the following content:
Video Player principlesEncapsulation Format (MP4, RMVB, TS, FLV, AVI)Video Encoding data (H.264, MPEG2, VC-1)Audio Encoding data (AAC, MP3, AC-3)
include: local or network playback, expandable media types, scalable media types, multi-lingual support, environmental independence, rich inter-flow relationships, and extensibility.
8.RM format
The audio and video compression specifications developed by networks are called real Media, and users can use RealPlayer or RealOne player for live broadcast of network audio/v
A Preliminary Study on HLS on-demand and live video streaming, on-demand video streaming
There are only two front-end live video protocols available:
RTMP (Real Time Messaging Protocol)
HLS (HTTP Live Streaming) WhereRTMPIt is a protocol developed by Adobe and cannot be compatible with the iPhone. Therefore, the HLS protocol is the most compatible currently
to call and the image quality is good, but the disadvantage is the file size.
Too large
*. RA/RM/Ram
*. Rm, one of the audio/video compression specifications developed by Real Networks, what real player can do is to use Internet resources to broadcast live audio/video that meets the Real Media technical specific
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