[gst-devel] how to create a pipeline to record video from camera?

Timothy Braun braunsquared at gmail.com
Thu Dec 23 08:06:05 CET 2010 

Try dropping the capsfilter and see if you get any results then. 

Sent from my iPhone

On Dec 23, 2010, at 1:52 AM, michael <mcygogo at gmail.com> wrote:

> Really!!?? but it's not work on my book!! God,,   this issue drives me crazy!! :(
> 
> On Thu, Dec 23, 2010 at 2:42 PM, liJin <lijinsyam at gmail.com> wrote:
> Hi
> 
> 
> gst-launch -e v4l2src ! 'video/x-raw-yuv,width=320,height=240, framerate=30/1' ! ffmpegcolorspace ! x264enc ! mp4mux ! filesink location=1.mp4
> 
> This pipeline working fine  (4 me)......:)
> 
> 
> On Thu, Dec 23, 2010 at 12:08 PM, michael <mcygogo at gmail.com> wrote:
> Is there nobody know how to record video from camera to a MP4 container with the H264 encoding ?
> 
> 
> On Thu, Dec 23, 2010 at 9:46 AM, michael <mcygogo at gmail.com> wrote:
> neither qtmux nor mp4mux is not work well
> 
> 
> On Wed, Dec 22, 2010 at 11:24 PM, Timothy Braun <braunsquared at gmail.com> wrote:
> Not qtmux, use mp4mux.
> 
> 
> On Wed, Dec 22, 2010 at 10:10 AM, michael <mcygogo at gmail.com> wrote:
> I have tested changing the muxer to qtmux, but it still not work
> 
> 
> On Wed, Dec 22, 2010 at 10:58 PM, Timothy Braun <braunsquared at gmail.com> wrote:
> I was never able to get the ffmpeg mpeg4 mixer to work quite right. I found that mp4mux, an extension of qtmux, works much better. If you inspect the ffmpeg mp4 muxer they actually suggest that you use a different one as it's unstable. 
> 
> Best,
> Tim
> 
> Sent from my iPhone
> 
> On Dec 22, 2010, at 8:27 AM, michael <mcygogo at gmail.com> wrote:
> 
>> I just ran it :
>> gst-launch -e v4l2src num-buffers=200  ! video/x-raw-yuv,width=640,height=480,framerate=30/1 ! ffmpegcolorspace ! ffenc_mpeg4 ! mp4mux ! filesink location=record.mp4
>> And got a mp4 file , but it still cannot be playbacked, and give the error info:
>> Playing record.mp4.
>> libavformat file format detected.
>> [mpeg4 @ 0x9376c10]hmm, seems the headers are not complete, trying to guess time_increment_bits
>> [mpeg4 @ 0x9376c10]my guess is 5 bits ;)
>> [mpeg4 @ 0x9376c10]looks like this file was encoded with (divx4/(old)xvid/opendivx) -> forcing low_delay flag
>> [mpeg4 @ 0x9376c10]picture size invalid (0x0)
>> [mpeg4 @ 0x9376c10]get_buffer() failed (-1 0 0 (nil))
>> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x9375640]Could not find codec parameters (Video: mpeg4, yuv420p)
>> LAVF_header: av_find_stream_info() failed
>> ISO: File Type Major Brand: ISO/IEC 14496-1 (MPEG-4 system) v2
>> Quicktime/MOV file format detected.
>> [mov] Video stream found, -vid 0
>> VIDEO:  [mp4v]  640x480  24bpp    inf fps    0.0 kbps ( 0.0 kbyte/s)
>> open: No such file or directory
>> [MGA] Couldn't open: /dev/mga_vid
>> open: No such file or directory
>> [MGA] Couldn't open: /dev/mga_vid
>> [VO_TDFXFB] Can't open /dev/fb0: Permission denied.
>> [VO_3DFX] Unable to open /dev/3dfx.
>> ==========================================================================
>> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
>> Selected video codec: [ffodivx] vfm: ffmpeg (FFmpeg MPEG-4)
>> ==========================================================================
>> Audio: no sound
>> Starting playback...
>> VDec: vo config request - 640 x 480 (preferred colorspace: Planar YV12)
>> VDec: using Planar YV12 as output csp (no 0)
>> Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
>> VO: [xv] 640x480 => 640x480 Planar YV12 
>> V:   0.0 200/200 ??% ??% ??,?% 0 0 
>> 
>> Exiting... (End of file)
>> 
>> But the error info not like the old one!
>> 
>> On Wed, Dec 22, 2010 at 9:17 PM, liJin <lijinsyam at gmail.com> wrote:
>> I think thats the issue...
>> 
>> 
>> gst-launch -e v4l2src ! 'video/x-raw-yuv,width=320,height=240, framerate=30/1' ! ffmpegcolorspace ! ffenc_mpeg4 ! mp4mux ! filesink location=1.mp4
>> 
>> run with -e option
>> 
>> 
>> 
>> On Wed, Dec 22, 2010 at 6:01 PM, Santakivi Topi <Topi.Santakivi at digia.com> wrote:
>> On 12/22/2010 12:18 PM, michael wrote:
>> > Now I can record the video to a AVI file with mpeg4 encoding by :
>> > gst-launch v4l2src ! 'video/x-raw-yuv,width=320,height=240,
>> > framerate=30/1' ! ffmpegcolorspace ! ffenc_mpeg4! avimux! filesink
>> > location=record.avi
>> >
>> > But I got two issues:
>> > 1: I want record as a MP4 file, I do it like this:
>> > gst-launch v4l2src ! 'video/x-raw-yuv,width=320,height=240,
>> > framerate=30/1' ! ffmpegcolorspace ! ffenc_mpeg4 ! mp4mux! filesink
>> > location=record.avi
>> > I can record the video , but when I playback it by mplayer, I got a error:
>> > Playing ./record.mp4.
>> > libavformat file format detected.
>> > [mov,mp4,m4a,3gp,3g2,mj2 @ 0x8741640]moov atom not found
>> > LAVF_header: av_open_input_stream() failed
>> > ISO: File Type Major Brand: ISO/IEC 14496-1 (MPEG-4 system) v2
>> 
>> When recording, with the above gst-launch line, do you stop
>> the pipeline with Ctrl+C..?
>> 
>> It could be that the file container doesn't get fully written
>> in case of such an interrupt and that's why the clip doesn't play.
>> 
>> For example, if you use this pipeline and
>> stop it with Ctrl+C, the clip doesn't play:
>> 
>> gst-launch-0.10 videotestsrc !
>> 'video/x-raw-yuv,width=320,height=240,framerate=30/1' ! ffmpegcolorspace
>> ! ffenc_mpeg4 ! mp4mux ! filesink location=test.mp4
>> 
>> But this pipeline produces a valid video file:
>> 
>> gst-launch-0.10 videotestsrc num-buffers=200 !
>> 'video/x-raw-yuv,width=320,height=240,framerate=30/1' ! ffmpegcolorspace
>> ! ffenc_mpeg4 ! mp4mux ! filesink location=test.mp4
>> 
>> >
>> > 2: I want encode the video to H264, so I do like this:
>> > gst-launch v4l2src ! 'video/x-raw-yuv,width=320,height=240,
>> > framerate=30/1' ! ffmpegcolorspace ! x264enc! avimux ! filesink
>> > location=record.avi
>> 
>> How about adding the format to the caps, e.g .
>> v4l2src ! 'video/x-raw-yuv,format=(fourcc)I420,width=320,height=240,
>> framerate=30/1' ! fmpegcolorspace ! x264enc! avimux ! filesink
>> location=record.avi ?
>> 
>> BR,
>> Topi
>> 
>> > But when I run the pipeline I just get the error info like this:
>> > Setting pipeline to PAUSED ...
>> > Pipeline is live and does not need PREROLL ...
>> > Setting pipeline to PLAYING ...
>> > New clock: GstSystemClock
>> > ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal
>> > data flow error.
>> > Additional debug info:
>> > gstbasesrc.c(2550): gst_base_src_loop ():
>> > /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
>> > streaming task paused, reason not-negotiated (-4)
>> > Execution ended after 1727716724 ns.
>> > Setting pipeline to PAUSED ...
>> > Setting pipeline to READY ...
>> > Setting pipeline to NULL ...
>> > Freeing pipeline ...
>> >
>> > Some one can help me fix the issues? Tks :)
>> >
>> >
>> > On 12/22/10, Timothy Braun <braunsquared at gmail.com
>> > <mailto:braunsquared at gmail.com>> wrote:
>> >  > H264 is encoded with x264enc element.
>> >  >
>> >  > Sent from my iPhone
>> >  >
>> >  > On Dec 22, 2010, at 3:10 AM, wl2776 <wl2776 at gmail.com
>> > <mailto:wl2776 at gmail.com>> wrote:
>> >  >
>> >  >>
>> >  >>
>> >  >> michael young wrote:
>> >  >>>
>> >  >>> And now , I want to record the video to a MP4 file with the h264
>> > encoding
>> >  >>> format  ,  How can I do ?
>> >  >>>
>> >  >>> On Wed, Dec 22, 2010 at 2:26 PM, michael <mcygogo at gmail.com
>> > <mailto:mcygogo at gmail.com>> wrote:
>> >  >>>
>> >  >>>> tks, this is work:   gst-launch v4l2src device=/dev/video0 !
>> >  >>>> 'video/x-raw-yuv,width=640,height=480,framerate=30/1' ! xvimagesink
>> >  >>>
>> >  >>>
>> >  >>
>> >  >> Looks like you can't, because h264 encoder is unavailable.
>> >  >> gst-inspect | grep h264
>> >  >> doesn't show it.
>> >  >> However, general idea is to encode, then mux, and then save to a file.
>> >  >> gst-launch v4l2src device=/dev/video0 !
>> >  >> 'video/x-raw-yuv,width=640,height=480,framerate=30/1' !  ffenc_mpeg4 !
>> >  >> mp4mux !filesink location=/home/user/file.
>> >  >>
>> >  >> --
>> >  >> View this message in context:
>> >  >>
>> > http://gstreamer-devel.966125.n4.nabble.com/how-to-create-a-pipeline-to-record-video-from-camera-tp3134399p3160261.html
>> >  >> Sent from the GStreamer-devel mailing list archive at Nabble.com.
>> >  >>
>> >  >>
>> > ------------------------------------------------------------------------------
>> >  >> Forrester recently released a report on the Return on Investment
>> > (ROI) of
>> >  >> Google Apps. They found a 300% ROI, 38%-56% cost savings, and break-even
>> >  >> within 7 months.  Over 3 million businesses have gone Google with Google
>> >  >> Apps:
>> >  >> an online email calendar, and document program that's accessible
>> > from your
>> >  >>
>> >  >> browser. Read the Forrester report: http://p.sf.net/sfu/googleapps-sfnew
>> >  >> _______________________________________________
>> >  >> gstreamer-devel mailing list
>> >  >> gstreamer-devel at lists.sourceforge.net
>> > <mailto:gstreamer-devel at lists.sourceforge.net>
>> >  >> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>> >  >
>> >  >
>> > ------------------------------------------------------------------------------
>> >  > Forrester recently released a report on the Return on Investment (ROI) of
>> >  > Google Apps. They found a 300% ROI, 38%-56% cost savings, and break-even
>> >  > within 7 months.  Over 3 million businesses have gone Google with Google
>> >  > Apps:
>> >  > an online email calendar, and document program that's accessible from
>> > your
>> >  > browser. Read the Forrester report: http://p.sf.net/sfu/googleapps-sfnew
>> >  > _______________________________________________
>> >  > gstreamer-devel mailing list
>> >  > gstreamer-devel at lists.sourceforge.net
>> > <mailto:gstreamer-devel at lists.sourceforge.net>
>> >  > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>> >  >
>> 
>> ------------------------------------------------------------------------------
>> Forrester recently released a report on the Return on Investment (ROI) of
>> Google Apps. They found a 300% ROI, 38%-56% cost savings, and break-even
>> within 7 months.  Over 3 million businesses have gone Google with Google Apps:
>> an online email calendar, and document program that's accessible from your
>> browser. Read the Forrester report: http://p.sf.net/sfu/googleapps-sfnew
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>> 
>> 
>> ------------------------------------------------------------------------------
>> Forrester recently released a report on the Return on Investment (ROI) of
>> Google Apps. They found a 300% ROI, 38%-56% cost savings, and break-even
>> within 7 months.  Over 3 million businesses have gone Google with Google Apps:
>> an online email calendar, and document program that's accessible from your
>> browser. Read the Forrester report: http://p.sf.net/sfu/googleapps-sfnew
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>> 
>> 
>> ------------------------------------------------------------------------------
>> Forrester recently released a report on the Return on Investment (ROI) of
>> Google Apps. They found a 300% ROI, 38%-56% cost savings, and break-even
>> within 7 months.  Over 3 million businesses have gone Google with Google Apps:
>> an online email calendar, and document program that's accessible from your 
>> browser. Read the Forrester report: http://p.sf.net/sfu/googleapps-sfnew
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> 
> ------------------------------------------------------------------------------
> Forrester recently released a report on the Return on Investment (ROI) of
> Google Apps. They found a 300% ROI, 38%-56% cost savings, and break-even
> within 7 months.  Over 3 million businesses have gone Google with Google Apps:
> an online email calendar, and document program that's accessible from your
> browser. Read the Forrester report: http://p.sf.net/sfu/googleapps-sfnew
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> 
> 
> 
> ------------------------------------------------------------------------------
> Forrester recently released a report on the Return on Investment (ROI) of
> Google Apps. They found a 300% ROI, 38%-56% cost savings, and break-even
> within 7 months.  Over 3 million businesses have gone Google with Google Apps:
> an online email calendar, and document program that's accessible from your
> browser. Read the Forrester report: http://p.sf.net/sfu/googleapps-sfnew
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> 
> 
> 
> ------------------------------------------------------------------------------
> Forrester recently released a report on the Return on Investment (ROI) of
> Google Apps. They found a 300% ROI, 38%-56% cost savings, and break-even
> within 7 months.  Over 3 million businesses have gone Google with Google Apps:
> an online email calendar, and document program that's accessible from your
> browser. Read the Forrester report: http://p.sf.net/sfu/googleapps-sfnew
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> 
> 
> 
> 
> ------------------------------------------------------------------------------
> Learn how Oracle Real Application Clusters (RAC) One Node allows customers
> to consolidate database storage, standardize their database environment, and,
> should the need arise, upgrade to a full multi-node Oracle RAC database
> without downtime or disruption
> http://p.sf.net/sfu/oracle-sfdevnl
> 
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> 
> 
> 
> ------------------------------------------------------------------------------
> Learn how Oracle Real Application Clusters (RAC) One Node allows customers
> to consolidate database storage, standardize their database environment, and,
> should the need arise, upgrade to a full multi-node Oracle RAC database
> without downtime or disruption
> http://p.sf.net/sfu/oracle-sfdevnl
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> 
> 
> ------------------------------------------------------------------------------
> Learn how Oracle Real Application Clusters (RAC) One Node allows customers
> to consolidate database storage, standardize their database environment, and, 
> should the need arise, upgrade to a full multi-node Oracle RAC database 
> without downtime or disruption
> http://p.sf.net/sfu/oracle-sfdevnl
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
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