Re: How to create thumbnail from FLV file?

The question I think you're asking is, does it work with the new  
On2vp6 codec, to which the answer is unfortunately, no, ffmpeg will  
not decode those without libvp62 which On2 is trying to wipe off the  
face of the planet because they believe it may have been reverse  
engineered from their proprietary code. (see the developers list for  
more)

However, if you chose to go with the old standard of FLV's (the  
Sorenson based open source codec) then FFMPEG can read them.

This is my understanding, I'm a noob as well though, so you might  
want to verify this with someone else.

Sorry :(

-- James


On Apr 21, 2006, at 8:13 PM, Jordan Rohan wrote:

> Does it work with flash 8?
>
> On 4/21/06, James Barros <james@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> > well, I'm not sure if this will help at all, but I'm creating them
> > with -ss and -vframes 1 instead of specifying a -t for a still image.
> > works for me with a CVS version from about a week back. YMMV.
> >
> > -- James
> >
> >
> > On Apr 21, 2006, at 12:26 AM, Jordan Rohan wrote:
> >
> > > I am having trouble creating thumbnail from FLV files using ffmpeg.
> > > It seems
> > > to work fine when I create thumbnails from MOV files, but the FLV
> > > files are
> > > not working. Here's what I get when I try to create a thumbnail
> > > from FLV
> > > files. This has been puzzling me for hours ...
> > >
> > > *ffmpeg.exe -i geebo_skiing_video.flv -f image2 -t 0.001 -ss 3
> > > fsn-throw-06_1.jpg
> > > *
> > > ffmpeg version 0.4.9-pre1, build 4721, Copyright (c) 2000-2004  
> > > Fabrice
> > > Bellard
> > >   built on Sep 20 2004 09:49:14, gcc: 3.2.3 (mingw special  
> > > 20030504-1)
> > > [flv @ 0040E0A4]skipping flv packet: type 18, size 273, flags 0
> > > Input #0, flv, from 'geebo_skiing_video.flv':
> > >   Duration: N/A, bitrate: N/A
> > >   Stream #0.0: Audio: mp3, 22050 Hz, stereo
> > >   Stream #0.1: Video: ♦
> > > Output #0, image2, to 'fsn-throw-06_1.jpg':
> > >   Stream #0.0: Video: mjpeg, q=2-31, 200 kb/s
> > > Stream mapping:
> > >   Stream #0.1 -> #0.0
> > > Unsupported codec (id=0) for input stream #0.1
> > >
> > > It seems to work fine when I do it for a quicktime file. Why does
> > > it work
> > > for quicktime but not for flash video?
> > >
> > > *ffmpeg.exe -i fsn-throw-06.mov -f image2 -t 0.001 -ss 3 fsn-
> > > throw-06_1.jpg
> > > *ffmpeg version 0.4.9-pre1, build 4721, Copyright (c) 2000-2004
> > > Fabrice
> > > Bellard
> > >   built on Sep 20 2004 09:49:14, gcc: 3.2.3 (mingw special  
> > > 20030504-1)
> > > Input #0, mov,mp4,m4a,3gp, from 'fsn-throw-06.mov':
> > >   Duration: 00:00:30.6, bitrate: 445 kb/s
> > >   Stream #0.0: Video: svq3, 320x240, 30.00 fps
> > >   Stream #0.1: Audio: mp2, 44100 Hz, stereo
> > > Output #0, image2, to 'fsn-throw-06_1.jpg':
> > >   Stream #0.0: Video: mjpeg, 320x240, 30.00 fps, q=2-31, 200 kb/s
> > > Stream mapping:
> > >   Stream #0.0 -> #0.0
> > > frame=   89 q=0.0 Lsize=       0kB time=3.0 bitrate=   0.0kbits/s
> > > video:5kB audio:0kB global headers:0kB muxing overhead -100.000000%
> > >
> > > Jordan
> > > _______________________________________________
> > > ffmpeg-user mailing list
> > > ffmpeg-user@xxxxxxxxxxxx
> > > http://mplayerhq.hu/mailman/listinfo/ffmpeg-user
> >
> > _______________________________________________
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