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 >>> >> > >
