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
