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Flash Video - Wikipedia. Flash Video. Filename extension. Internet media typevideo/x- flv, video/mp. Street Fighter 2 Arcade Champion Edition Tl. Developed by. Adobe Systems (originally developed by Macromedia)Type of format. Media container. Container for. Audio, video, text, data. Extended from. FLV: SWFF4.

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V: MPEG- 4 Part 1. Flash Video is a container file format used to deliver digital video content (e. TV shows, movies, etc.) over the Internet using Adobe Flash Player version 6 and newer. Flash Video content may also be embedded within SWF files. There are two different video file formats known as Flash Video: FLV and F4. V. The audio and video data within FLV files are encoded in the same manner as they are within SWF files. The F4. V file format is based on the ISO base media file format and is starting with Flash Player 9 update 3.

FLV was originally developed by Macromedia. In the early 2. 00.

The FLV.com Free FLV Downloader allows you to download and rip flash video from sites like YouTube and DailyMotion to your desktop.

Flash Video used to be the de facto standard for web- based streaming video (over RTMP). Notable users of it include Hulu, VEVO, Yahoo! Video, metacafe, Reuters. Flash Video FLV files usually contain material encoded with codecs following the Sorenson Spark or VP6video compression formats. The most recent public releases of Flash Player (collaboration between Adobe Systems and Main.

Concept) also support H. HE- AAC audio. Flash Video is viewable on most operating systems via the Adobe Flash Player and web browserplugin or one of several third- party programs.

Apple's i. OS devices, along with almost all other mobile devices, do not support the Flash Player plugin and so require other delivery methods such as provided by the Adobe Flash Media Server. In 2. 00. 3, Flash Player 7 added direct support for FLV file format. Because of restrictions in the FLV file format, Adobe Systems has created in 2. ISO base media file format (MPEG- 4 Part 1. Flash Player does not check the extension of the file, but rather looks inside the file to detect which format it is. For example, F4. V does not support Screen video, Sorenson Spark, VP6 video compression formats and ADPCM, Nellymoser audio compression formats. There are functional limits with the FLV structure when streaming H.

AAC which could not be overcome without a redesign of the file format. This is one reason why Adobe Systems is moving away from the traditional FLV file structure.

Adobe branded file suffixes exist for . Adobe Access DRM scheme with . MIME derived Internet media type of audio/mp. SWF files published for Flash Player 6 and later versions are able to exchange audio, video, and data over RTMP connections with the Adobe Flash Media Server. One way to feed data to Flash Media Server is from files in the FLV file format. Starting with SWF files created for Flash Player 7, Flash Player can play FLV file format directly (MIME type video/x- flv). Starting with SWF files created for Flash Player 9 Update 3, Flash Player can also play the new F4.

V file format. On. VP6 is the preferred video compression format for use with Flash Player 8 and higher. On the other hand, it is computationally more complex and therefore will not run as well on certain older system configurations. Both these formats are bitmap tile based, can be lossy by reducing color depths and are compressed using zlib. The second version is only playable in Flash Player 8 and newer. Audio in Flash Video files is usually encoded as MP3.

However, audio in Flash Video FLV files recorded from the user's microphone use the proprietary Nellymoser Asao Codec. Recent versions of Flash Player 9 support AAC (HE- AAC/AACSBR, AAC Main Profile, and AAC- LC). Support for encoding Flash Video files is provided by an encoding tool included with Adobe's Flash Professional and Creative Suite products, On. Flix encoding tools, Sorenson Squeeze, FFmpeg and other third party tools. Media type support.

Below is a list of popular free video converters which support conversion to FLV. These programs run under Microsoft Windows. Hand. Brake, FFmpeg and VLC also run under Mac OS X and Linux. Flash Video Structure. The first four bytes denote the size of the previous packet/tag (including the header), and aid in seeking backward. Field. Data Type.

Default. Details. Size of previous packetuint. The third bit indicates the payload is encrypted using the same mechanism as RTMP uses, however this is rarely used due to encrypted transports such as RTMP being used instead. The FLV packet encryption is generally inherited from a MP4 file that is stored on a Adobe Flash Media Server. Packet types enumerated as 1 is a RTMP set packet size. Packet types enumerated from 3 are RTMP bytes read report, RTMP ping, RTMP server bandwidth, RTMP client bandwidth. Packet types enumerated from 8 are Audio payload, Video payload.

Packet types enumerated from 1. RTMP flex stream send, RTMP flex shared object, RTMP flex message, AMF metadata, shared object, RTMP invoke. Packet type enumerated as 2. Following that, there are three bytes for the Payload Size denoting length of the Payload Data, then four bytes for the Timestamp in milliseconds (with the last byte used to extend the first three bytes), the next 3 bytes for the Stream ID (incremented for multiple streams of the same type), and finally followed by the actual payload data. There is a direct relation between the fields encountered in an FLV Tag and those found in a RTMP packet, as for example the FLV Packet Type field uses the same numeric values as the RTMP Chunk Type field (ex.

FLV tags are thus converted into RTMP packets when the file is streamed through a Flash Media Server or equivalent RTMP Server. The first packet encountered is usually a metadata packet which contains information such as. Audio packets have the first byte of the payload defining the decoding details with the first four bits for the encoding used and the last four bits for the parameters required to process the encoding.

Video packets have this order reversed. Video encodings enumerated from 0 are: Video processing parameters enumerated from 1 are: Id. Video processing parameters. H. 2. 63 disposable frame. MPEG- 4 encodings such as H. MPEG- 4 ASP and AAC add a one byte value with a NULL value indicating that the payload contains MPEG- 4 configuration details. MPEG- 4 video encodings also add three bytes for composition timestamp offset which is required for encodings that use B- frames.

Audio encodings enumerated from 0 are: Audio encodings enumerated from 1. Audio encodings enumerated from 1. MPEG layer 3 8 k. Hz, Device specific such as MIDI. Audio processing parameters with the first two bits for the sampling rate, next bit flags 1. Sampling rates enumerated from 0 are 5. Hz, 1. 1. 0. 25 k.

Hz quarter, 2. 2. Buy Sell Signal Software Stock System. Hz half, 4. 4. 1 k. Hz full. Encrypted packets have an additional 3. AES- CBC encrypted payload as follows: Field.

Data Type. Default. Details. Num. Filtersuint. Filter. Name. C string. An FLV player can be used standalone, without the need of the Adobe Flash authoring or developmental tools. It can also be embedded in the website using Flash component or embeddable version of FLV player. Flash Player. It plays SWF files, which can be created by Adobe Flash Professional, Apache Flex, or a number of other Adobe Systems and 3rd party tools. It has support for a scripting language called Action.

Script, which can be used to display Flash Video from an SWF file. Because the Flash Player runs as a browserplug- in, it is possible to embed Flash Video in web pages and view the video within a web browser. Flash Player supported display of Flash Video files since version 6, with the Sorenson Spark and On VP6 video codecs. Support was recently added for H. Flash Player 9 Update 3, released on 3 December 2. MPEG- 4 Part 2 video (e. Such video supports vector animations displayed above the video content.

Such content is typically rendered using software decoding. Such video is displayed above all Flash content, and takes advantage of video codec chipsets installed on the user's device. Developers must specifically use the . Flash Player internally uses technologies such as Direct.