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

liJin lijinsyam at gmail.com
Thu Dec 23 07:42:59 CET 2010 

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>
>>>>> 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>
>>>>>> 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>
>>>>>>> braunsquared at gmail.com
>>>>>>> > <mailto: <braunsquared at gmail.com>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>
>>>>>>> wl2776 at gmail.com
>>>>>>> > <mailto: <wl2776 at gmail.com>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>
>>>>>>> mcygogo at gmail.com
>>>>>>> > <mailto: <mcygogo at gmail.com>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>
>>>>>>> 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>
>>>>>>> http://p.sf.net/sfu/googleapps-sfnew
>>>>>>> >  >> _______________________________________________
>>>>>>> >  >> gstreamer-devel mailing list
>>>>>>> >  >> <gstreamer-devel at lists.sourceforge.net>
>>>>>>> gstreamer-devel at lists.sourceforge.net
>>>>>>> > <mailto: <gstreamer-devel at lists.sourceforge.net>
>>>>>>> gstreamer-devel at lists.sourceforge.net>
>>>>>>> >  >> <https://lists.sourceforge.net/lists/listinfo/gstreamer-devel>
>>>>>>> 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>
>>>>>>> http://p.sf.net/sfu/googleapps-sfnew
>>>>>>> >  > _______________________________________________
>>>>>>> >  > gstreamer-devel mailing list
>>>>>>> >  > <gstreamer-devel at lists.sourceforge.net>
>>>>>>> gstreamer-devel at lists.sourceforge.net
>>>>>>> > <mailto: <gstreamer-devel at lists.sourceforge.net>
>>>>>>> gstreamer-devel at lists.sourceforge.net>
>>>>>>> >  > <https://lists.sourceforge.net/lists/listinfo/gstreamer-devel>
>>>>>>> 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>
>>>>>>> http://p.sf.net/sfu/googleapps-sfnew
>>>>>>> _______________________________________________
>>>>>>> gstreamer-devel mailing list
>>>>>>>  <gstreamer-devel at lists.sourceforge.net>
>>>>>>> gstreamer-devel at lists.sourceforge.net
>>>>>>>  <https://lists.sourceforge.net/lists/listinfo/gstreamer-devel>
>>>>>>> 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>
>>>>>> http://p.sf.net/sfu/googleapps-sfnew
>>>>>> _______________________________________________
>>>>>> gstreamer-devel mailing list
>>>>>>  <gstreamer-devel at lists.sourceforge.net>
>>>>>> gstreamer-devel at lists.sourceforge.net
>>>>>>  <https://lists.sourceforge.net/lists/listinfo/gstreamer-devel>
>>>>>> 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>
>>>>> 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
>>>
>>>
>>
>
>
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