Brad, Thanks for the advise. I will drop it for now and move on to unicast and relay. Maybe I will have a better idea when I learn more about it.
York On Wed, 2009-04-01 at 13:04 -0400, Brad Bitterman wrote: > Its hard to tell without looking at the file you captured. It seems > that either your i-frames are not being sent correctly or you timing > is off for some reason. If the RTP timestamp is not correct then VLC > will not be happy and give you warnings about late and dropped frames. > > - Brad > > On Mar 31, 2009, at 5:12 PM, York Sun wrote: > > > Brad, > > > > My camera is AXIS M1011 Network Camera. I have no idea about the key > > frame on camera. > > > > My recording is 100 seconds lone. However, with testMPEG4VideoStreamer > > and vlc as a client, I can only see the green picture for about 5 > > seconds, then the picture freezes and vlc message says > > > > ffmpeg decoder error: more than 5 seconds of late video -> dropping > > frame (computer too slow ?) > > > > On the other hand, vlc can play the recorded file if rename it > > to .m4v. > > > > York > > > > > > On Tue, 2009-03-31 at 16:55 -0400, Brad Bitterman wrote: > >> Oh! I think I know exactly what your seeing. I have seen this before > >> many times with VLC. What happens for me is that the time between i- > >> frames is very long. When I connect with VLC i only get p-frames > >> for a > >> while. The green is because the initial decoded picture buffer in VLC > >> is filled with all zeros which in YUV land is green. The little > >> shapes > >> you see are the motion vectors that are being decoded against the > >> green buffer. > >> > >> How long is the clip you captured? What is the key frame interval set > >> to on the Axis camera? > >> > >> - Brad > >> > >> On Mar 31, 2009, at 4:24 PM, York Sun wrote: > >> > >>> Brad, > >>> > >>> I should be clear about the color. It is not random color. It is all > >>> green, with a little bit shape here and there under vlc. mplayer > >>> shows > >>> most black. > >>> > >>> I think it is something related to multicast. Just found an old post > >>> in > >>> archive > >>> http://lists.live555.com/pipermail/live-devel/2008-August/009323.html > >>> . > >>> Ross seems to believe the missing key frame causes the green. > >>> > >>> I tried live555MediaServer and it streams OK. > >>> > >>> Here is what I am trying to do. I want to capture rtsp steams from > >>> multiple IP cameras (MPEG4 or H.264), save the stream to the hard > >>> drive, > >>> and also re-stream the video to unicast and/or multicast addresses. > >>> I am > >>> hoping I can use the openRTSP and testMPEG4VideoStreamer as template > >>> and > >>> put them together. Now it seems to be a little bit difficult for > >>> multicasting. Please advise if it is even possible, or someone > >>> already > >>> did it. > >>> > >>> Thanks, > >>> > >>> York > >>> > >>> > >>> On Tue, 2009-03-31 at 15:49 -0400, Brad Bitterman wrote: > >>>> Not sure what would cause a color issue like what you're > >>>> describing.... Live555 doesn't modify the frame data in any way so > >>>> chroma info should not be modified. > >>>> > >>>> > >>>> - Brad > >>>> > >>>> On Mar 30, 2009, at 10:34 PM, sun york-R58495 wrote: > >>>> > >>>>> Thanks for the hint. vlc can play the file with .m4v extension. > >>>>> That > >>>>> at least proves the openRTSP works OK. I still don't know why > >>>>> testMPEG4VideoStreamer sends the vague picture with wrong color. > >>>>> Is > >>>>> it resolution issue? The sample para.m4e file streams OK. It has > >>>>> low > >>>>> resolution, though. > >>>>> > >>>>> York > >>>>> > >>>>> > >>>>> > >>>>> -----Original Message----- > >>>>> From: [email protected] on behalf of Brad > >>>>> Bitterman > >>>>> Sent: Mon 3/30/2009 19:51 > >>>>> To: LIVE555 Streaming Media - development & use > >>>>> Subject: Re: [Live-devel] stream m4e > >>>>> > >>>>> You can use ffmpeg to wrap the file into a mp4 container. I think > >>>>> the > >>>>> command is just the following: > >>>>> > >>>>> ./ffmpeg -i video-MP4V-ES-1 out.mp4 > >>>>> > >>>>> You should then be able to open the file with VLC. Also, ffmpeg > >>>>> will > >>>>> usually tell you if there are problems with the bitstream. I have > >>>>> also > >>>>> just renamed the file with a .m4v extension and VLC can play it > >>>>> directly without any container. > >>>>> > >>>>> I have used openRTSP in the past to capture a stream from an Axis > >>>>> camera and it worked fine. You might also want to turn the debug > >>>>> log > >>>>> level up in vlc and see if it reports any errors. > >>>>> > >>>>> - Brad > >>>>> > >>>>> On Mar 30, 2009, at 5:58 PM, York Sun wrote: > >>>>> > >>>>>> I am new to this list. Tried to search the archive but didn't > >>>>>> find > >>>>> a > >>>>>> good way. > >>>>>> > >>>>>> In short, I have difficulty to stream m4e by > >>>>> testMPEG4VideoStreamer. > >>>>>> The > >>>>>> m4e comes from openRTSP (renamed from video-MP4V-ES-1), captured > >>>>>> from my > >>>>>> Axis camera, 640x480. I can see the picture with wrong color. vlc > >>>>> and > >>>>>> mplayer display different wrong color. I don't know which part is > >>>>>> wrong. > >>>>>> > >>>>>> More info, if adding -i or -4 to openRTSP, the avi or mp4 file > >>>>>> can > >>>>> be > >>>>>> correctly played by vlc and mplayer. I don't know how to verify > >>>>> the > >>>>>> m4e > >>>>>> file. I can stream the sample para.m4e file. Only the very > >>>>> beginning > >>>>>> shows wrong color. > >>>>>> > >>>>>> Any help is appreciated. > >>>>>> > >>>>>> York > >>>>>> > >>>>>> _______________________________________________ > >>>>>> live-devel mailing list > >>>>>> [email protected] > >>>>>> http://lists.live555.com/mailman/listinfo/live-devel > >>>>> > >>>>> _______________________________________________ > >>>>> live-devel mailing list > >>>>> [email protected] > >>>>> http://lists.live555.com/mailman/listinfo/live-devel > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> _______________________________________________ > >>>>> live-devel mailing list > >>>>> [email protected] > >>>>> http://lists.live555.com/mailman/listinfo/live-devel > >>>> > >>>> > >>>> _______________________________________________ > >>>> live-devel mailing list > >>>> [email protected] > >>>> http://lists.live555.com/mailman/listinfo/live-devel > >>> _______________________________________________ > >>> live-devel mailing list > >>> [email protected] > >>> http://lists.live555.com/mailman/listinfo/live-devel > >> > >> _______________________________________________ > >> live-devel mailing list > >> [email protected] > >> http://lists.live555.com/mailman/listinfo/live-devel > >> > > _______________________________________________ > > live-devel mailing list > > [email protected] > > http://lists.live555.com/mailman/listinfo/live-devel > > _______________________________________________ > live-devel mailing list > [email protected] > http://lists.live555.com/mailman/listinfo/live-devel > _______________________________________________ live-devel mailing list [email protected] http://lists.live555.com/mailman/listinfo/live-devel
