Hello , I am just trying to get control over the video firmly . Nothing special though.
Thanks for the help . And regarding top-posting , is there any protocols to be followed while posting on this mailing list . If yes , my apologies and please let me know them. Thanks , Parag On Sat, Jun 6, 2015 at 11:21 PM, Moritz Barsnick <[email protected]> wrote: > Hi Parag, > why are you top-posting? > > > As explained in the link (http://en.wikipedia.org/wiki/Group_of_pictures > ) > > that we can specify the GOP structure by two variables M , N . But what > > it seems from the -g option is that we can only specify the N (distance > > between the two I frames) not M . So can we have other option to specify > > completely the GOP structure in ffmpeg ? > > I found the documentation for "-g", it's in this section: > > https://www.ffmpeg.org/ffmpeg-all.html#Codec-Options > > N is specified by the "-bf" option: > > ‘bf integer (encoding,video)’ > > Set max number of B frames between non-B-frames. > > Must be an integer between -1 and 16. 0 means that B-frames are > disabled. If a value of -1 is used, it will choose an automatic value > depending on the encoder. > > Default value is 0. > > I'm not sure this default value is valid for all codecs though. I would > have thought libx264 defaults to using B-frames. libx264 also has much > finer options to control the type of frames it produces. > > Parag, why do you ask? Just out of curiosity, or are you trying to > achieve something special? > > Moritz > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
