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POffmpeg: convert audio-only flv to swf
 

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  1. POffmpeg: convert audio-only flv to swf
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    <p>My Flex application records audio-only FLV files using red5--I'd like to convert these to SWF files so I can embed them in other SWF files. (I could also convert to MP3 and then embed them into SWFs myself, but I'd prefer a one step solution.)</p> <p>Anyone have experience doing this?</p> <p>What I've tried:</p> <p>The following naive ffmpeg command fails:</p> <pre><code>&gt; ffmpeg -i 3139747641.flv -vn movie.swf FFmpeg version SVN-r21751-snapshot, Copyright (c) 2000-2010 Fabrice Bellard, et al. built on Feb 11 2010 09:15:42 with gcc 4.2.1 (SUSE Linux) configuration: --enable-gpl --enable-nonfree libavutil 50. 9. 0 / 50. 9. 0 libavcodec 52.53. 0 / 52.53. 0 libavformat 52.52. 0 / 52.52. 0 libavdevice 52. 2. 0 / 52. 2. 0 libswscale 0.10. 0 / 0.10. 0 [flv @ 0x8a5e3a0]Could not find codec parameters (Video: 0x0000) [flv @ 0x8a5e3a0]Estimating duration from bitrate, this may be inaccurate Input #0, flv, from '3139747641.flv': Metadata: audiocodecid : -1 duration : 0 videocodecid : -1 canSeekToEnd : true Duration: 00:00:14.88, start: 0.000000, bitrate: N/A Stream #0.0: Video: 0x0000, 1k tbr, 1k tbn, 1k tbc Stream #0.1: Audio: nellymoser, 8000 Hz, mono, s16 Output #0, swf, to 'movie.swf': Stream #0.0: Audio: 0x0000, 8000 Hz, mono, s16, 64 kb/s Stream mapping: Stream #0.1 -&gt; #0.0 Encoder (codec id 86017) not found for output stream #0.0 </code></pre> <p>I've tried adding a dummy video, but this also failed:</p> <pre><code>&gt; ffmpeg -i dummy.mov -i 3139747641.flv movie.swf &lt;!-- snip --&gt; Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'dummy.mov': Metadata: major_brand : qt minor_version : 512 compatible_brands: qt encoder : Lavf52.52.0 encoder-eng : Lavf52.52.0 Duration: 00:00:00.10, start: 0.000000, bitrate: 62 kb/s Stream #0.0(eng): Video: mpeg4, yuv420p, 10x10 [PAR 1:1 DAR 1:1], 1 kb/s, 10 fps, 10 tbr, 10 tbn, 10 tbc [flv @ 0x8a67fa0]Could not find codec parameters (Video: 0x0000) [flv @ 0x8a67fa0]Estimating duration from bitrate, this may be inaccurate Input #1, flv, from '3139747641.flv': Metadata: audiocodecid : -1 duration : 0 videocodecid : -1 canSeekToEnd : true Duration: 00:00:14.88, start: 0.000000, bitrate: N/A Stream #1.0: Video: 0x0000, 1k tbr, 1k tbn, 1k tbc Stream #1.1: Audio: nellymoser, 8000 Hz, mono, s16 picture size invalid (0x0) Cannot allocate temp picture, check pix fmt </code></pre>
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