<p>One possible solution is: <a href="http://www.squared5.com" rel="nofollow">SQUARED 5</a> MPEG STREAMCLIP it's a freeware converter with basic editing functions. The Batch function should help you.</p>

<p>Other possible software solution: <a href="http://avidemux.sourceforge.net/" rel="nofollow">AviDemux</a></p>

CC BY-SA 3.0
2012-01-28T10:05:42.343Z
I'm using WinFF to first convert to mpg then copy /b to combine and streamclip to fix the timebreaks. With WinFF I just have to drag and drop all the swf files and let it go(i.e., batch). Only one that seems to properly convert the swf files.
Uiy
CC BY-SA 3.0
2012-01-24T10:03:16.467Z
2012-01-24T10:03:16.467Z
blindfold
<p>'Hundreds of files' sounds like you could go for automation, rather than a heavy GUI-based solution like a proper NLE. The command-line tool ffmpeg has an option you may find useful: the concat demuxer. To concatenate files with the same resolution, first create a file called <code>inputs.txt</code>, containing lines like:</p>

<pre><code>file 'input1.swf'
file 'input2.swf'
file 'input3.swf'
</code></pre>

<p>One file per line. Then, using ffmpeg:</p>

<pre><code>ffmpeg -f concat -i inputs.txt \
-c:v libx264 -crf 22 -preset veryfast \
-c:a libfdk_aac -q:a 3 output.mp4
</code></pre>

<p>For more information on the encoding options, look <a href="https://ffmpeg.org/trac/ffmpeg/wiki/x264EncodingGuide" rel="nofollow">here</a> and <a href="https://ffmpeg.org/trac/ffmpeg/wiki/AACEncodingGuide" rel="nofollow">here</a>.</p>

<p>For other concatenation options with ffmpeg, see <a href="https://ffmpeg.org/trac/ffmpeg/wiki/How%20to%20concatenate%20%28join%2C%20merge%29%20media%20files" rel="nofollow">here</a>.</p>

CC BY-SA 3.0
2013-01-15T23:19:50.940Z
2013-01-15T23:19:50.940Z
evilsoup
<p>The first thing you need to accomplish is to extract the video from the SWF. A SWF is not a video file. It is an application or small program. There is an "FLV video" compiled into it. Try <a href="http://www.sothink.com/page/swf-decompiler/extract-flv.htm" rel="nofollow">SWF Decompiler</a>. It might be able to extract the FLV from the SWF.</p>

<p>Once you have the FLV (the actual video file), there are numerous video editors that can read and edit it.</p>

CC BY-SA 3.0
2012-02-25T23:23:06.200Z
2012-02-25T23:23:06.200Z
R3D71ND
<p>I'm having major issues combining/merging(lossless) swf video files into a single file then converting to something more useful(mp4).</p>

<p>I've tried using premiere but no audio as it doesn't import the audio. I have many of these files(hundreds) and need a simple way to merge them and convert. I don't really want to convert these files then merge then convert as they are already low quality and they don't need any more artifacts. </p>

CC BY-SA 3.0
2012-01-24T09:50:46.830Z
to me it sounds like a codec problem.
blindfold
<video><conversion>
merge and convert swf
Uiy
# merge and convert swf

(Asked by: username_0 on 2012-01-23)

I'm having major issues combining/merging(lossless) swf video files into a single file then converting to something more useful(mp4).

I've tried using premiere but no audio as it doesn't import the audio. I have many of these files(hundreds) and need a simple way to merge them and convert. I don't really want to convert these files then merge then convert as they are already low quality and they don't need any more artifacts.

**Tags:** video, conversion

> **Comments:**
> **username_1**: to me it sounds like a codec problem.  

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## 3 answers

### Answer by username_1 on 2012-01-24. Score: 1

One possible solution is: [SQUARED 5](http://www.squared5.com) MPEG STREAMCLIP it's a freeware converter with basic editing functions. The Batch function should help you.

Other possible software solution: [AviDemux](http://avidemux.sourceforge.net/)

> **Comments:**
> **username_0**: I'm using WinFF to first convert to mpg then copy /b to combine and streamclip to fix the timebreaks. With WinFF I just have to drag and drop all the swf files and let it go(i.e., batch). Only one that seems to properly convert the swf files.  

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### Answer by username_2 on 2013-01-15. Score: 0

'Hundreds of files' sounds like you could go for automation, rather than a heavy GUI-based solution like a proper NLE. The command-line tool ffmpeg has an option you may find useful: the concat demuxer. To concatenate files with the same resolution, first create a file called inputs.txt, containing lines like:
file 'input1.swf'
file 'input2.swf'
file 'input3.swf'

One file per line. Then, using ffmpeg:
ffmpeg -f concat -i inputs.txt \
-c:v libx264 -crf 22 -preset veryfast \
-c:a libfdk_aac -q:a 3 output.mp4

For more information on the encoding options, look here and here.
For other concatenation options with ffmpeg, see here.


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### Answer by username_3 on 2012-02-25. Score: 0

The first thing you need to accomplish is to extract the video from the SWF. A SWF is not a video file. It is an application or small program. There is an "FLV video" compiled into it. Try [SWF Decompiler](http://www.sothink.com/page/swf-decompiler/extract-flv.htm). It might be able to extract the FLV from the SWF.

Once you have the FLV (the actual video file), there are numerous video editors that can read and edit it.


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