[FFmpeg-user] speeding transfert

[jacky]

Le 03/10/2013 21:07, Jim Shupert a écrit :
> well - this isn't a ffmpeg solution because it sounds like your 
> difficulty is data move/store/access.
>
> How about you have your own ftp server
> This would allow for not chopping up the video into dropBox valid size
> then just use an ftp client, filezilla etc.
>
> so you have dv25 --~ 4 GB .... so that is ~ 20 min?
>
> do you really need 25Mbps of d1 411 & pcm audio??
>
> could you deal w a really good mp4 , mov or wmv
> meaning can your edit/view needs be satisfied with a smaller file?
> So you might acquire as DV due to real world working means [ cam etc ]
> but transcode that into something smaller - then send it .then That is 
> > flv & stream.
> do not send the DV .... no need to chop -send -concat back together - 
> transcode to flv
> a mp4 @ 5Mbps would be alot smaller and it ends up as a flv @ ~ 
> 600kbps anyhoo
>
> On 10/3/2013 9:20 AM, jacky wrote:
>> Hello
>> I am a volunter in a senior culture association, responsable for
>> streaming server application and have a question to vidéo gourous
>>
>> We have a large DV file (about 4Gb) from each conference (once a week)
>> this dv file is encoded using ffmpeg supplying 2 differents flv files 
>> (one 400kb/s
>> second 600kb/s)
>>
>> We all are senior this means which we are working from home and we must
>> transfert from the team to the admin then from the admin to the server
>> this process is requiring about 7h total download and would like to 
>> avoid or to
>> keep smaller (the admin and the video team are separated and can do 
>> both tasks)
>>
>> One supposed solution might be to slice a file in several parts et 
>> send these
>> to Dropbox (as an exemple) and let the serveur fetching, concatenate and
>> running ffmpeg (a very large file is keeping vpn active and in case 
>> it stops we have to
>> restart from start)
>> Do you thing it is possible to slice DV file and concatenate without 
>> too much trouble ?
>> it seems it cannot be on flv easily
>> does somebody knows a better solution ? even complex requiring 
>> programming
>> thanks to all of you , ffmpeg is really a very powerfull tool
>>
>> regards
>> jacky
>>
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>>
>
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Many thanks Jim
i was quite affraid on making a ftp server (I have a lot of security 
constraints)
but I think it is the best solution and I will move on

by the way is there a way to exhange programming tricks related to ffmpeg ?
we are several using batch files it will be great to share solved points

exemple : In case you run   ffmpeg  -list_devices true -f dshow -i dummy
you'll get webcam model name which might include acents and/or special 
caracters
(mine is video="Périphérique vidéo USB")
accents cannot be handled very well with dos batch
I found a trick which may help the community and ready to share

regards
jacky