I am using an iphone 4. I finally resorted to using the H264 decoder in ffmeg (there is an iphone port available). My test app decodes an H.264 movie while at the same time, encoding a raw camera feed. I've just about got things to work - but my FPS for the decoding (while encoding is going on) drops to around 7fps.... While not encoding, its great. On Mon, Dec 6, 2010 at 12:47 PM, Jeff Brower <jbrower at signalogic.com> wrote: > Dzmitry- > > > I said nothing about encoding, only about decoding. > > Ok. I think for single-channel H264 decode the ARM core is fine. My > concern is with multiple concurrent decodes, for > example video conference, and also encode. I think this will be too much > for the ARM core. I can't figure out yet > how to utilize the media (DSP) core, for example make API calls that > offload the ARM. > > -Jeff > > > On 06.12.2010, at 8:58, Jeff Brower wrote: > > > >> Dzmitry- > >> > >>> Yes, we use x264 ( from http://www.videolan.org/developers/x264.html) > >>> for decode h264. > >> > >> This is using the ARM core? I would think that using the ARM core > instead of the media (DSP) core would overload > >> the > >> ARM and cut battery life. Maybe decode is more feasible, but encode is > CPU intensive. > >> > >> -Jeff > >> > >>> On 04.12.2010, at 16:41, bo shi wrote: > >>> > >>>> Hi Dima, > >>>> I learned that the iPhone sdk does not publish the H.264 codec API, > >>>> so developer can not use hardware decoder to decode raw H.264 stream > >>>> directly, how can you do that? You decode video in soft way? > >>>> > >>>> Thanks in advance! > >>>> Bo > >>>> > >>>> > >>>> On Saturday, December 4, 2010, Dzmitry Yablonski <grizlik at gmail.com> > wrote: > >>>>> Hello Rob > >>>>> We have implemented video call with PjSip 1.8.5 on iPhone. > >>>>> Best regards, Dima. > >>>>> > >>>>> > >>>>> On 04.12.2010, at 15:26, Rob Wilkes wrote: > >>>>> I also noticed that your roadmap says it will initially be for > windows. My requirement is for iphone. I guess my > >>>>> question is not really a PJSIP question, but rather to developers who > may have used PJ to make video work on > >>>>> iPhone > >>>>> - just wanted to check if it is doable or impossible today due to > some iphone restriction :) > >>>>> > >>>>> On Sat, Dec 4, 2010 at 8:42 AM, Rob Wilkes <wilkrob at gmail.com> > wrote: > >>>>> > >>>>> Hi Benny, Yes, I know PJSIP also plans to support it - but for this > project, I cannot wait for that update, so I > >>>>> plan to do it myself. Since you may be ahead of me, I was curious if > there are any restrictions in the iPhone > >>>>> APIs > >>>>> itself that will inhibit PJSIP (or any other stack) to not work with > video. For example, it looks like I cannot > >>>>> use > >>>>> the Movie Player class as it expects a URL.For this to work, we will > need frame/frame encode/decode and display > >>>>> support on the iPhone. > >>>>> > >>>>> > >>>>> thanks! > >>>>> > >>>>> On Fri, Dec 3, 2010 at 10:12 PM, Benny Prijono <bennylp at teluu.com> > wrote: > >>>>> > >>>>> Hi, FYI we are also working on video and it is planned for the > >>>>> upcoming 2.0 release. Have a look at our roadmap in the trac site. > >>>>> > >>>>> Best regards, > >>>>> Benny > >>>>> > >>>>> > >>>>> On Sat, Dec 4, 2010 at 3:51 AM, Rob Wilkes <wilkrob at gmail.com> > wrote: > >>>>>> Hi, I have started on an activity to get a basic Video call working > on > >>>>>> iPhone. It needs be be over RTP, preferably with H.264 codec. Has > anyone > >>>>>> written a video client with PJSIP specifically for the iphone? Are > there any > >>>>>> road blocks? ( I know PJSIP doesnt support video for now, but I plan > to > >>>>>> extend it - my question is more in the iPhone side). Prelim. > analysis shows > >>>>>> I can pass H.264 streams to the iphone media player framework and it > can > >>>>>> instantiate the appropriate player. My approximate plan is to send > audio + > >>>>>> video data using PJSIP, then extend PJSIP to support video decoding > and pass > >>>>>> the decoded H264 buffer to the media framework of iphone. > >>>>>> > >>>>>> > >>>>>> _______________________________________________ > >>>>>> Visit our blog: http://blog.pjsip.org <http://blog.pjsip.org/> > >>>>>> > >>>>>> pjsip mailing list > >>>>>> pjsip at lists.pjsip.org > >>>>>> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > >>>>>> > >>>>>> > >>>>> > >>>>> _______________________________________________ > >>>>> Visit our blog: http://blog.pjsip.org <http://blog.pjsip.org/> > >>>>> > >>>>> pjsip mailing list > >>>>> pjsip at lists.pjsip.org > >>>>> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > >>>>> > >>>>> > >>>>> > >>>>> _______________________________________________ > >>>>> Visit our blog: http://blog.pjsip.org > >>>>> > >>>>> pjsip mailing list > >>>>> pjsip at lists.pjsip.org > >>>>> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > >>>>> > >>>>> > >>>> > >>>> _______________________________________________ > >>>> Visit our blog: http://blog.pjsip.org > >>>> > >>>> pjsip mailing list > >>>> pjsip at lists.pjsip.org > >>>> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > >>> > >>> > >>> _______________________________________________ > >>> Visit our blog: http://blog.pjsip.org > >>> > >>> pjsip mailing list > >>> pjsip at lists.pjsip.org > >>> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > >>> > >> > > > > > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > -------------- next part -------------- An HTML attachment was scrubbed... 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