从swf文件问题生成图像

Question

I am trying to generate first frame of a swf as a thumbnail image so the user can see it before they open the swf file.

1.Using FFMpeg

ffmpeg -i movie.swf -f image2 -vcodec png movie%d.png

using command line with ffmpeg to generate images. the above command will give me errors saying

[swf @ 0x17937a0] Compressed SWF format not supported

2.Using swftools

Their website provide a tar file to download however, I only have the command line access in the server so I won't be able to install the tools.

I need to use server side technology because I have hundreds of swf files.

Answer 1

p7zip e movie.swf
ffmpeg -i movie~.swf movie.png

Most SWF files are compressed to save space, similar to a .tar.gz or .zip. So before you can use it with FFmpeg, you need to extract or decompress the file.

p7zip is a command line program that can extract SWF.