Re: super small

David Liontooth wrote:
> Carl Karsten wrote:
>> I have about 1100 .dv files totaling 3tb.  I pretty much have no clue 
>> what each file is, other than it was recorded at US PyCon 08.  There 
>> are 10 or so people that will help, so it seems the first step is to 
>> identify them all.
>>
>> This plan is a little too labor intensive: buy 30 1t external drives, 
>> copy data, ship drives to people.  mainly because "copy data" means 
>> "plug in drive, start copy, check back in a few hours, repeat 30 
>> times" which means I will be doing this dance for a week or something.
>>
>> So I am considering this:  encode the hell out of them into something 
>> barley recognizable, throw it on my cable modem web server, and let 
>> these people pull them down, view enough to figure out what it is, log 
>> it to a database.
>>
>> I think things can further be helped by only grabbing the first 5 or 
>> 10 min of each file (some files are 30 min, some are 6 hours.)
>>
>> I might even be able to figure out how to hook up a web page that will 
>> let the person select a file and time, and give them a full res image 
>> file of that frame.  most talks start with the talk title projected on 
>> the screen, and being able to read that might be helpful.
>>
>> For the "encode the hell out of them" part, any suggestions on what 
>> format/options I should try?
> How about exporting some frames instead of converting the videos? The 
> first few frames should catch the talk title.
> 
> nice -n 19 transcode -q 0 -o $FIL.img -y im -F png -x ffmpeg,null -i 
> $DIR/$FIL.dv -c \
> 0:00:00-0:00:00.1,0:00:10-0:00:10.1,0:00:20-0:00:20.1,0:00:30-0:00:30.1,0:00:40-0:00:40.1,0:00:50-0:00:50.1,\ 
> 
> 0:01:00-0:01:00.1,0:01:10-0:01:10.1,0:01:20-0:01:20.1,0:01:30-0:01:30.1,0:01:40-0:01:40.1,0:01:50-0:01:50.1,\ 
> 
> 0:02:00-0:02:00.1,0:02:10-0:02:10.1,0:02:20-0:02:20.1,0:02:30-0:02:30.1,0:02:40-0:02:40.1,0:02:50-0:02:50.1 
> 2> /dev/null
> 

I ran that on a random file, and I now have 17 images of an empty podium and a 
blue projector screen (what you get from no signal.)

Most of the recordings start a min or 2 before the 'session chair' would give a 
30-120 second verbal announcement, and then the talk might not actually start 
for another 30 seconds.  so somewhere in the frist 5 min will be the talk title 
you are looking for.

But, now that I think about it, the title is probably displayed for 30 seconds, 
so if bump the "every 10 seconds" to 30, i should catch it.

now to write some .py to generate the -c...

Carl K