Hi, just remember to also set the -f option to force the use of the specified pixel format (otherwise the camera default one is used). So the two options that need to be set are: -o -f
regards, Paulo 2011/9/12 Ajay Bhargav <ajay.bhar...@einfochips.com>: > Hi Paulo, > > This is good.. thanks I will test it with my camera too.. > > Regards, > Ajay Bhargav > > ----- "Paulo Assis" <pj.as...@gmail.com> wrote: > >> Hi, >> see attached a patched capture example, for saving the driver output >> buffer into raw files (200). >> I haven't been able to test build it, but the changes are minimal so >> it should work. >> >> You just need to change the resolution, and maybe the pixel format to >> whatever the driver expects. >> see lines 495-497. >> >> Regards, >> Paulo >> >> 2011/9/9 Robert Krakora <rob.krak...@messagenetsystems.com>: >> > All, >> > >> > I forgot to tell you that I came up with one more patch for the UVC >> source >> > in v4l2 to get MPEG2 transport streams to behave correctly. I have >> attached >> > it to this e-mail. My sincerest apologies. >> > >> > Best Regards, >> > >> > -- >> > Rob Krakora >> > MessageNet Systems >> > 101 East Carmel Dr. Suite 105 >> > Carmel, IN 46032 >> > (317)566-1677 Ext 212 >> > (317)663-0808 Fax >> > >> > On Fri, Sep 9, 2011 at 10:05 AM, Paulo Assis <pj.as...@gmail.com> >> wrote: >> >> >> >> Well one important thing to notice is the pixel format returned by >> the >> >> driver, will it differentiate between avc and svc streams, or even >> >> mpeg2 ? >> >> If not maybe then it becomes harder for generic apps to decode it, >> >> unless we use a bunch of switch cases for the different cameras >> >> (something like this would be best implemented in the driver >> though) >> >> >> >> Regards, >> >> Paulo >> >> >> >> 2011/9/9 Ajay Bhargav <ajay.bhar...@einfochips.com>: >> >> > Hi Robert, >> >> > >> >> > As you know its a development camera... I think my camera need >> some >> >> > fixing.. >> >> > my hardware decoder does not work with H.264 stream directly... I >> added >> >> > h264parse element before h264 decoder in gstreamer pipeline to >> make it >> >> > work. >> >> > >> >> > Regards, >> >> > Ajay Bhargav >> >> > >> >> > ----- "Robert Krakora" <rob.krak...@messagenetsystems.com> >> wrote: >> >> > >> >> > Hi Ajay, >> >> > >> >> > The encoder in your camera may be different and produce H.264 >> AVC >> >> > instead of >> >> > SVC. The latest gstreamer-ffmpeg did not work for me for the >> FaceVsion >> >> > Touchcam E1. >> >> > >> >> > Best Regards, >> >> > >> >> > Rob Krakora >> >> > >> >> > On Fri, Sep 9, 2011 at 9:18 AM, Ajay Bhargav >> >> > <ajay.bhar...@einfochips.com> >> >> > wrote: >> >> >> >> >> >> Hi Paulo, >> >> >> >> >> >> for me ffdec_h264 worked perfectly... I used current stable >> release of >> >> >> gstreamer-ffmpeg. It has many more formats... >> >> >> >> >> >> --Ajay Bhargav >> >> >> >> >> >> >> >> >> ----- "Paulo Assis" <pj.as...@gmail.com> wrote: >> >> >> >> >> >> > Hi, >> >> >> > have you tried the open svc decoder ( >> >> >> > http://sourceforge.net/projects/opensvcdecoder/ ) ? >> >> >> > >> >> >> > It would probably be easier to add as dependency. >> >> >> > >> >> >> > Regards, >> >> >> > Paulo >> >> >> > >> >> >> > 2011/9/9 Alexey Fisher <bug-tr...@fisher-privat.net>: >> >> >> > > Hi Paulo, >> >> >> > > >> >> >> > > i have video dump from Robert, not v4l2... The problem with >> it is >> >> >> > codec. It >> >> >> > > seems to be some SVC variant of h264 and ffmpeg can't play >> it >> >> >> > correctly. >> >> >> > > Robert say, currently only fluh264dec (flyendo plugin for >> >> >> > > gstreamer) >> >> >> > can >> >> >> > > play it. >> >> >> > > >> >> >> > > Am 09.09.2011 13:23, schrieb Paulo Assis: >> >> >> > >> >> >> >> > >> Hi, >> >> >> > >> I was thinking on using ffmpeg (libavcodec) since this is >> already >> >> >> > a >> >> >> > >> guvcview dependency for enconding the streams, decoding >> them >> >> >> > shouldn't >> >> >> > >> be to hard, I just need to understand how they are handled >> by the >> >> >> > driver. >> >> >> > >> This is the reason I need the raw data, you should be able >> to use >> >> >> > the >> >> >> > >> v4l2 capture example to store the buffer data as delivered >> by the >> >> >> > driver >> >> >> > >> (something like buffer-1.raw,...,buffer-n.raw would be >> nice), or I >> >> >> > can >> >> >> > >> send you some code for doing this if you prefer. >> >> >> > >> >> >> >> > >> Regards, >> >> >> > >> Paulo >> >> >> > >> >> >> >> > >> 2011/9/9 Ajay Bhargav <ajay.bhar...@einfochips.com >> >> >> > >> <mailto:ajay.bhar...@einfochips.com>> >> >> >> > >> >> >> >> > >> Hi Paulo, >> >> >> > >> >> >> >> > >> I am not having H.264 camera, My camera is similar to >> >> >> > Facevision's >> >> >> > >> Touchcam E1. It sends out MPEG2-TS stream encoded with >> H.264. I >> >> >> > have >> >> >> > >> recorded some videos during my testing if that is fine >> for you >> >> >> > >> I >> >> >> > can >> >> >> > >> send across... it would be great if guvcview can show >> >> >> > compressed >> >> >> > >> streams :) we can make use of gstreamer to achieve >> this.. >> >> >> > >> >> >> >> > >> -- Ajay Bhargav >> >> >> > >> >> >> >> > >> >> >> >> > >> ----- "Paulo Assis" <pj.as...@gmail.com >> >> >> > <mailto:pj.as...@gmail.com>> >> >> >> > >> wrote: >> >> >> > >> >> >> >> > >> Hi, >> >> >> > >> I would like to add support for H.264 stream format >> in >> >> >> > guvcview, >> >> >> > >> Could you post some stream info, or even better an >> example >> >> >> > of >> >> >> > >> raw data output (does the capture buffer contains an >> exact >> >> >> > frame >> >> >> > >> like in MJPEG ?) >> >> >> > >> >> >> >> > >> Regards, >> >> >> > >> Paulo >> >> >> > >> >> >> >> > >> 2011/9/9 Ajay Bhargav <ajay.bhar...@einfochips.com >> >> >> > >> <mailto:ajay.bhar...@einfochips.com>> >> >> >> > >> >> >> >> > >> Hi Srinivas, >> >> >> > >> >> >> >> > >> UVC fixes wont be needed for you to get your >> cam >> >> >> > output.. >> >> >> > >> >> >> >> > >> You can build gstreamer0.10-ffmpeg to decode >> H.264 >> >> >> > stream, >> >> >> > >> Robert has used fluendo package for decoding. >> >> >> > >> >> >> >> > >> --Ajay >> >> >> > >> >> >> >> > >> >> >> >> > >> ----- "Max Lapshin" <max.laps...@gmail.com >> >> >> > >> <mailto:max.laps...@gmail.com>> wrote: >> >> >> > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> On Fri, Sep 9, 2011 at 11:01 AM, Srinivas >> >> >> > Mandavilli >> >> >> > >> <srinivas.mandavi...@lucivid.com >> >> >> > >> <mailto:srinivas.mandavi...@lucivid.com>> >> wrote: >> >> >> > >> >> >> >> > >> Thanks Ajay! I just got a B990, and am >> trying >> >> >> > to >> >> >> > >> stream out H264. >> >> >> > >> >> >> >> > >> Hi, Srinivas. Be so kind: if you will have >> success >> >> >> > with >> >> >> > >> it, write an email: what kernel version are >> you >> >> >> > using? >> >> >> > >> >> >> >> > >> I failed to do it with kernel 3.0.0 >> >> >> > >> >> >> >> > >> -- >> >> >> > >> This message has been scanned for viruses >> and >> >> >> > >> dangerous content by *Clean Mail Gateway* >> >> >> > >> <http://www.CleanMailGateway.com/>, and is >> >> >> > >> believed to be clean. >> >> >> > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> _______________________________________________ >> >> >> > >> Linux-uvc-devel mailing list >> >> >> > >> Linux-uvc-devel@lists.berlios.de >> >> >> > >> <mailto:Linux-uvc-devel@lists.berlios.de> >> >> >> > >> >> >> >> > https://lists.berlios.de/mailman/listinfo/linux-uvc-devel >> >> >> > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> -- >> >> >> > >> This message has been scanned for viruses and >> >> >> > >> dangerous content by *Clean Mail Gateway* >> >> >> > >> <http://www.CleanMailGateway.com/>, and is >> >> >> > >> believed to be clean. >> >> >> > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> _______________________________________________ >> >> >> > >> Linux-uvc-devel mailing list >> >> >> > >> Linux-uvc-devel@lists.berlios.de >> >> >> > >> https://lists.berlios.de/mailman/listinfo/linux-uvc-devel >> >> >> > > >> >> >> > > >> >> >> > >> >> >> > -- >> >> >> > This message has been scanned for viruses and >> >> >> > dangerous content by Clean Mail Gateway, and is >> >> >> > believed to be clean. >> >> >> > >> >> >> > >> >> >> > >> >> >> > >> ************************************************************************************************************************************************************* >> >> >> > einfochips Business Disclaimer : This e-mail message and all >> >> >> > attachments transmitted with it are intended solely for the >> use of >> >> >> > the >> >> >> > addressee and may contain legally privileged and confidential >> >> >> > information. 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However the company accepts no liability >> for any >> >> >> > damage caused by any virus transmitted by this email. >> >> >> > >> >> >> > >> >> >> > >> ************************************************************************************************************************************************************* >> >> > >> >> > >> >> > >> >> > -- >> >> > Rob Krakora >> >> > MessageNet Systems >> >> > 101 East Carmel Dr. Suite 105 >> >> > Carmel, IN 46032 >> >> > (317)566-1677 Ext 212 >> >> > (317)663-0808 Fax >> >> > >> >> > -- >> >> > This message has been scanned for viruses and >> >> > dangerous content by Clean Mail Gateway, and is >> >> > believed to be clean. >> >> > >> >> > _______________________________________________ >> >> > Linux-uvc-devel mailing list >> >> > Linux-uvc-devel@lists.berlios.de >> >> > https://lists.berlios.de/mailman/listinfo/linux-uvc-devel >> >> > >> >> > >> > >> > >> >> -- >> This message has been scanned for viruses and >> dangerous content by Clean Mail Gateway, and is >> believed to be clean. >> >> >> ************************************************************************************************************************************************************* >> einfochips Business Disclaimer : This e-mail message and all >> attachments transmitted with it are intended solely for the use of the >> addressee and may contain legally privileged and confidential >> information. 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