Make snapshots from a list of .flv files

[brandox]

How do i run mencoder or ffmpeg to make multiple snapshots from a list of .flv files ?

E.g. I have a list

file01.flv
file02.flv
file03.flv
etc.

and i need to have 10 snapshots for each files, starting from 0 to 9

e.g.
file01.flv-0.jpg
file01.flv-1.jpg
file01.flv-2.jpg
etc for each of flv file

each snapshot is made after each 3rd second

How do i run the command ?

Your help is very appreciated

[zoobie]

I use vlc

[Ai Haibara]

I use vlc

I don't think VLC allows for batch or timed snapshots, though, as the OP seems to want. At least, not that I can remember... I could be wrong.

[brandox]

No, no, I'm sure this can be done from command line or with .bat file
Has anyone experience in running commands ?

[Baldrick]

Yep, i'm using ffmpeg,

ffmpeg -i video.flv  -ss 00:00:03  -vframes 1 -f image2 -y image.jpg

-ss is the start in the video.

And make a batch file(.bat) in the same folder as the flvs and ffmpeg.exe with

FOR %%F IN ("*.flv") DO ffmpeg -i %%F -ss 00:00:03 -vframes 1 -f image2 -y %%F-0.jpg 

FOR %%F IN ("*.flv") DO ffmpeg -i %%F -ss 00:00:06 -vframes 1 -f image2 -y %%F-1.jpg

etc

might work then. Be sure to backup your flvs first if something goes wrong.

and just google for ffmpeg thumbnail for several more tips.

[brandox]

thanks, along with you help, i've found proper command working

for f in *.flv; do ffmpeg -i $f -an -ss 00:00:01 -an -r 1 -vframes 1 -y -f image2 -s 190x142 $f-0.jpg; done
for f in *.flv; do ffmpeg -i $f -an -ss 00:00:03 -an -r 1 -vframes 1 -y -f image2 -s 190x142 $f-1.jpg; done

etc.[/quote]

[imediat_rob]

Hi all

I've just started using AVIDEMUX (http://avidemux.org/) - my initial goal was to find a tool that would actually do simple edit tasks in an FLV. It does it just fine.

There is also a simple function in the main file menu to grab a jpg snapshot of same file type. BEAUTY!

There also seems to be a great range of other tools / codecs /filters etc in there. As an example I ran a conversion of the same .vob file to FLV through both avidemux and Sorenson, my main compression tool. Sorenson had a better image finish and smaller file size (by about 25 %) but I expect with a bit of fooling around both could be improved with avidemux. Interestingly, the conversion time in demux was much quicker than Sorenson.

Relatively easy GUI even for an unprogrammy numbnuts like me.

Would be interested in others' feedback on new use or existing users.

Cheers
8)

[imediat_rob]

Hi all

I've just started using AVIDEMUX (http://avidemux.org/) - my initial goal was to find a tool that would actually do simple edit tasks in an FLV. It does it just fine.

There is also a simple function in the main file menu to grab a jpg snapshot of same file type. BEAUTY!

There also seems to be a great range of other tools / codecs /filters etc in there. As an example I ran a conversion of the same .vob file to FLV through both avidemux and Sorenson, my main compression tool. Sorenson had a better image finish and smaller file size (by about 25 %) but I expect with a bit of fooling around both could be improved with avidemux. Interestingly, the conversion time in demux was much quicker than Sorenson.

Relatively easy GUI even for an unprogrammy numbnuts like me.

Would be interested in others' feedback on new use or existing users.

Cheers
8)

...oh and by the way, you can actually splice/apend flvs together in avidemux, something that Sorenson definitely can't do!