----- Original Message ----- From: "Matthieu Weber" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, July 09, 2004 8:57 AM Subject: Re: [Freevo-users] Re: Better DVB support (C programmers needed)
On Thu 08.07.2004 at 03:27:37PM +0200, Dirk Meyer wrote: > Matthieu Weber wrote: > >> So basicly we need someone with some free time: take a ts, pes, > >> mpeg. Find all i-frames -> put the iframe in the analyse part of noad > >> and store the result as mplayer EDL or chapter information for Freevo. > >> > >> So much to do, so less time :-( > > > > Would noad bring anything more than what I have already implemented? My > > system works with AVIs also, actually with whatever that mplayer can > > read. > > noad's main feature is not black frame detection. The main feature is > logo detection. The station logo isn't shown in the ads. No, but at least on some channels, it disappears before the ads start (a couple of seconds), so it's not as accurate as black frames IMHO, but they could complement eachother, though. >BTW, MythTV also has an ad remover, it might be interesting to take a >look at it? ________________________________________________________________ Unfortunatly i can't test matthieu's black frame detection, i can't compile mplayer for this.... mythTV uses a modified version of nubblevideo for their tv viewing and commercial removal. as far as i know, they use logo detection. Some thoughts regarding add removal: -Because commercial detection is in every country different (several approaches), the best way to go is an indexfile (as you did Matthieu), and not removing or cutting in streams or avi, an SDL file is pretty standard In respect to the gui, how about a skipforward(back) button in freevo (chapters) -Another "quick" and "dirty" way to approach the "commercials" problem: If a program is subbed by teletekst, one could also quickscan the teletekst stream. To my knowledge each channel has a "dedicated" teletekst page for the hearing impaired, off course this is not accurate, but it could save some cpu usage. -Allthoug volume change's are forbidden in some countries during commercials it's commonly used by marketing people (less dynamic sound, but a higher average volume.(products for reducing this are commercialy available e.g. http://www.costco.com/Browse/Product.aspx?prodid=10038127&whse=&topnav=&cat=4277&hierPath=79*4277* ) a paper regarding this issue can be found on: http://gps-tsc.upc.es/GTAV/Torres/Publications/wiamis_albiol_fulla_torres.pdf I am testing currently some things with mp3gain. up to now it takes 5 minutes to analysze hour's mp3 file I am splitting an avi into mp3's of a minute, find mean volumelevel and analyze these...more on this one ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ Freevo-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/freevo-users
