Flash Tutorials - Herong's Tutorial Examples - v3.03, by Dr. Herong Yang
Video and Audio Stream SWF File Structure
This section describes the SWF file structure that records both video and audio streams. It uses DEFINEVIDEOSTREAM tag to define the video stream data and SOUNDSTREAMHEAD2 tag to define audio stream data.
SWF file format can also be used to record video streams, audio streams, or video and audio streams mixed together.
Below is the structure of a SWF file dumped by the "swfdump" command from the SWFTools package. This SWF file records both video stream and audio stream mixed together.
[HEADER] File version: 6 [HEADER] File size: 8383705 [HEADER] Frame rate: 25.000000 [HEADER] Frame count: 4795 [HEADER] Movie width: 416.00 [HEADER] Movie height: 240.00 [02d] 6 SOUNDSTREAMHEAD2 [03c] 10 DEFINEVIDEOSTREAM defines id 0000 (4795 frames, 416x240 sorenson h.263) [01a] 21 PLACEOBJECT2 places id 0000 at depth 0001 name "video" [03d] 6485 VIDEOFRAME adds information to id 0000 (frame 0) 416x240... [013] 421 SOUNDSTREAMBLOCK [001] 0 SHOWFRAME 1 (00:00:00,000) [01a] 5 PLACEOBJECT2 moves object at depth 0001 [03d] 1069 VIDEOFRAME adds information to id 0000 (frame 1) 416x240... [013] 422 SOUNDSTREAMBLOCK [001] 0 SHOWFRAME 2 (00:00:00,040) [01a] 5 PLACEOBJECT2 moves object at depth 0001 [03d] 440 VIDEOFRAME adds information to id 0000 (frame 2) 416x240... [013] 840 SOUNDSTREAMBLOCK [001] 0 SHOWFRAME 3 (00:00:00,080) ... [01a] 5 PLACEOBJECT2 moves object at depth 0001 [03d] 97 VIDEOFRAME adds information to id 0000 (frame 4794) 416x... [013] 422 SOUNDSTREAMBLOCK [001] 0 SHOWFRAME 4795 (00:03:11,757) [000] 0 END
As you can see from the dump file, a video and audio stream SWF file structure is very simple:
Table of Contents
Adobe Flash Player Plugin for Firefox
Adobe Flash Player Plugin for Chrome
Adobe Flash Player Plugin for Safari
Adobe Flash Player ActiveX for IE
Using "object" Elements for Flash Files
Using "embed" Elements for Flash Files
"mp3player" - MP3 Music Player
SWFObject - Hidding "object" behind JavaScript
SWFTools - SWF File Manipulation Tools
SWFC Script to Generate Flash SWF Files
ActionScript Embedded in SWFC Script
AS3Compile - ActionScript 3 Compiler
►SWF Files for Video and Audio Streams
►Video and Audio Stream SWF File Structure
Installing FFmpeg to Manipulate Video SWF Files
Playing Movie with FFmpeg "ffplay" Command
See File Properties with FFmpeg "ffprobe" Command
Convert File Format with "ffmpeg" Command
Issue with "ffplay" on SWF Output File
Break Long Video into Parts with "ffmpeg"
Concatenate Video Files with "ffmpeg"
Video/Audio Stream Concatenation Order
Split Audio Stream Out of SWF File
Split Video Stream Out of SWF File
Merge Video and Audio Streams to SWF File