How to save incoming h264 stream without re-encoding?
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How to save incoming h264 stream without re-encoding?
 
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I would like to be able to save a incoming H264 stream (video only, no
audio) to a file on disk. I've created the following pipeline: gst-launch -v udpsrc port=4444 num-buffers=500 ! application/x-rtp,media=\(string\)video,clock-rate=\(int\)90000,encoding-name=\(string\)H264 ! .recv_rtp_sink_0 gstrtpbin ! rtpmp2tdepay ! mpegtsdemux ! mp4mux ! filesink location=test.mp4 But that doesn't seem to work: the pipeline never stops despite being limited to 500 buffers, and the file stays at 0 KB filesize. To verify that the stream is actually running I use the following pipeline, which works fine: gst-launch -v udpsrc port=4444 num-buffers=500 ! application/x-rtp,media=\(string\)video,clock-rate=\(int\)90000,encoding-name=\(string\)H264 ! .recv_rtp_sink_0 gstrtpbin ! rtpmp2tdepay ! mpegtsdemux ! ffdec_h264 ! ffmpegcolorspace ! ximagesink Does anyone have an idea what I'm doing wrong? Grts, Francis ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: How to save incoming h264 stream without re-encoding?
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2010/2/18 Francis Rammeloo <[hidden email]>:
> I would like to be able to save a incoming H264 stream (video only, no > audio) to a file on disk. I've created the following pipeline: > > gst-launch -v udpsrc port=4444 num-buffers=500 ! > application/x-rtp,media=\(string\)video,clock-rate=\(int\)90000,encoding-name=\(string\)H264 > ! .recv_rtp_sink_0 gstrtpbin ! rtpmp2tdepay ! mpegtsdemux ! mp4mux ! > filesink location=test.mp4 > > But that doesn't seem to work: the pipeline never stops despite being > limited to 500 buffers, and the file stays at 0 KB filesize. > Clarification: the video stream I am trying to record is a screen capture. I created a workaround by sending the original stream as a *lossless* h264 and the do the decoding, re-encoding and muxing at the receiving end. This results in a good quality capture because it avoids the quality loss from multiple encoding. However, the cost is in bandwidth because lossless video has very high bitrates. Currently this workaround only works for screen captures of 800x600 resolutions maximum. If anyone knows a that allows the receiver to directly mux the incoming stream without having to do the decoding and re-encoding then that would be great. Grts, Francis ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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In reply to this post by Francis Rammeloo
I'm trying to do the exact same thing. I stumbled upon a heap of unanswered threads like these on my search, so I'll bump this one because it's most similar to what I want to do.
I'm trying to transmit H264 video in RTP packets, over UDP and then on the receiving end reconvert the packets into an H264 stream and both output the stream with ximagesink and save the h264 stream into a file. I can output the live stream to ximagesink just fine. Saving the stream is a whole different ordeal. No matter what I do, I cannot save a stream to a file. I'll start by posting my transmit script. gst-launch-0.10 v4l2src ! queue ! 'video/x-raw-yuv,width=640,height=480' ! x264enc bitrate=500 speed-preset=superfast tune=zerolatency ! queue ! rtph264pay ! udpsink host=224.1.1.1 port=5010 auto-multicast=true This is my most desired receiving script (it's supposed to both show the video in a window and write the video to an avi file): gst-launch-0.10 udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5010 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)\"Z0KAHukBQHpCAAAH0AAB1MAIAA\\=\\=\\,aM48gAA\\=\", payload=(int)96, ssrc=(uint)3315029550, clock-base=(uint)3926529534, seqnum-base=(uint)45576' ! gstrtpjitterbuffer drop-on-latency=true latency=500 ! rtph264depay ! tee name=videosrc \ videosrc. ! queue ! ffdec_h264 ! ffmpegcolorspace ! ximagesink sync=false \ videosrc. ! queue ! avimux ! filesink location=video.avi Unfortunately that doesn't work, doesn't throw any errors, but it doesn't bring up the video window nor does it try to write a file. If I take out the last line (the tee for printing out the file), it does bring up the video window. If I take out the second to last line (the tee for displaying the window) it creates the file, but it's zero bytes in size. My scripts do depend on the elements rtph264pay and rtph264depay which are poorly documented. I thought that perhaps the output of rtph264depay doesn't output an h264 format avimux likes. So I ran this script: gst-launch-0.10 v4l2src ! queue ! 'video/x-raw-yuv,width=640,height=480' ! x264enc bitrate=500 speed-preset=superfast tune=zerolatency ! rtph264pay ! rtph264depay ! avimux ! filesink location=video.avi Which doesn't work, it only writes a file of zero bytes large, but if I took out the "rtph264pay ! rtph264depay !" part, it works fine. But what's more? If I add "ffdec_h264 ! ffmpegcolorspace !" between rtph264depay and avimux it does write a file (albeit a very large file). But then if I try to run this script as the receive script (just to try to write a file): gst-launch-0.10 udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5010 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)\"Z0KAHukBQHpCAAAH0AAB1MAIAA\\=\\=\\,aM48gAA\\=\", payload=(int)96, ssrc=(uint)3315029550, clock-base=(uint)3926529534, seqnum-base=(uint)45576' ! gstrtpjitterbuffer drop-on-latency=true latency=500 ! rtph264depay ! ffdec_h264 ! ffmpegcolorspace ! tee name=videosrc \ videosrc. ! queue ! avimux ! filesink location=video.avi It does not work. So what is the deal here? Is there any way to write video from a h264 stream? |
Re: How to save incoming h264 stream without re-encoding?
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I don't think its such a good idea to save H.264 to avi, I would recommend trying mp4mux and save to mp4 instead,
hope it helps, with me this works fine. best, Rufael ----- Oorspronkelijk bericht ----- Van: "garrett" <[hidden email]> Aan: [hidden email] Verzonden: Dinsdag 15 mei 2012 04:00:28 Onderwerp: Re: How to save incoming h264 stream without re-encoding? I'm trying to do the exact same thing. I stumbled upon a heap of unanswered threads like these on my search, so I'll bump this one because it's most similar to what I want to do. I'm trying to transmit H264 video in RTP packets, over UDP and then on the receiving end reconvert the packets into an H264 stream and both output the stream with ximagesink and save the h264 stream into a file. I can output the live stream to ximagesink just fine. Saving the stream is a whole different ordeal. No matter what I do, I cannot save a stream to a file. I'll start by posting my transmit script. gst-launch-0.10 v4l2src ! queue ! 'video/x-raw-yuv,width=640,height=480' ! x264enc bitrate=500 speed-preset=superfast tune=zerolatency ! queue ! rtph264pay ! udpsink host=224.1.1.1 port=5010 auto-multicast=true This is my most desired receiving script (it's supposed to both show the video in a window and write the video to an avi file): gst-launch-0.10 udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5010 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)\"Z0KAHukBQHpCAAAH0AAB1MAIAA\\=\\=\\,aM48gAA\\=\", payload=(int)96, ssrc=(uint)3315029550, clock-base=(uint)3926529534, seqnum-base=(uint)45576' ! gstrtpjitterbuffer drop-on-latency=true latency=500 ! rtph264depay ! tee name=videosrc \ videosrc. ! queue ! ffdec_h264 ! ffmpegcolorspace ! ximagesink sync=false \ videosrc. ! queue ! avimux ! filesink location=video.avi Unfortunately that doesn't work, doesn't throw any errors, but it doesn't bring up the video window nor does it try to write a file. If I take out the last line (the tee for printing out the file), it does bring up the video window. If I take out the second to last line (the tee for displaying the window) it creates the file, but it's zero bytes in size. My scripts do depend on the elements rtph264pay and rtph264depay which are poorly documented. I thought that perhaps the output of rtph264depay doesn't output an h264 format avimux likes. So I ran this script: gst-launch-0.10 v4l2src ! queue ! 'video/x-raw-yuv,width=640,height=480' ! x264enc bitrate=500 speed-preset=superfast tune=zerolatency ! rtph264pay ! rtph264depay ! avimux ! filesink location=video.avi Which doesn't work, it only writes a file of zero bytes large, but if I took out the "rtph264pay ! rtph264depay !" part, it works fine. But what's more? If I add "ffdec_h264 ! ffmpegcolorspace !" between rtph264depay and avimux it does write a file (albeit a very large file). But then if I try to run this script as the receive script (just to try to write a file): gst-launch-0.10 udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5010 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)\"Z0KAHukBQHpCAAAH0AAB1MAIAA\\=\\=\\,aM48gAA\\=\", payload=(int)96, ssrc=(uint)3315029550, clock-base=(uint)3926529534, seqnum-base=(uint)45576' ! gstrtpjitterbuffer drop-on-latency=true latency=500 ! rtph264depay ! ffdec_h264 ! ffmpegcolorspace ! tee name=videosrc \ videosrc. ! queue ! avimux ! filesink location=video.avi It does not work. So what is the deal here? Is there any way to write video from a h264 stream? -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/How-to-save-incoming-h264-stream-without-re-encoding-tp1559487p4633660.html Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
Re: How to save incoming h264 stream without re-encoding?
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Hi,
On Tue, May 15, 2012 at 8:43 AM, Rufael Mekuria <[hidden email]> wrote: I don't think its such a good idea to save H.264 to avi, I would recommend trying mp4mux and save to mp4 instead, There is also Matroska: http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-matroskamux.html Best regards, Tiago Katcipis
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Thank you for the suggestions Rufael and Tiago.
I tried writing the H264 stream to an mp4 file with mp4mux. My strategy for developing this receive and write script is to write a single test script is to see if a particular mux can write a file directly from the output of rtph264depay and then, if it works, integrate the mux into the network receive and write script. My test script for writing to an mp4 file was: gst-launch-0.10 v4l2src ! queue ! 'video/x-raw-yuv,width=640,height=480' ! x264enc bitrate=500 speed-preset=superfast tune=zerolatency ! rtph264pay ! rtph264depay ! mp4mux ! filesink location=video.mp4 This wrote a file but the file was 0 bytes in size. If you were to take out the "rtph264pay ! rtph264depay" part: gst-launch-0.10 v4l2src ! queue ! 'video/x-raw-yuv,width=640,height=480' ! x264enc bitrate=500 speed-preset=superfast tune=zerolatency ! mp4mux ! filesink location=video.mp4 It writes a file that takes up space, but when playing the file my media player says it doesn't contain playable streams (I'm closing the script with ctrl + c by the way). When I test the matroskamux element: gst-launch-0.10 v4l2src ! queue ! 'video/x-raw-yuv,width=640,height=480' ! x264enc bitrate=500 speed-preset=superfast tune=zerolatency ! rtph264pay ! rtph264depay ! matroskamux ! filesink location=video.mkv I get a file that is 0 bytes in size. Removing the "rtph264pay ! rtph264depay" part of the script produces a playable file (although the playhead progress is not liner, it starts in the middle and slows down increasingly as it approaches the end of the movie). Adding in "ffdec_h264 ! ffmpegcolorspace" to the script: gst-launch-0.10 v4l2src ! queue ! 'video/x-raw-yuv,width=640,height=480' ! x264enc bitrate=500 speed-preset=superfast tune=zerolatency ! rtph264pay ! rtph264depay ! ffdec_h264 ! ffmpegcolorspace ! matroskamux ! filesink location=video.mkv Produces a playable (but very large file). Extending this to the network receive script: gst-launch-0.10 udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5010 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)\"Z0KAHukBQHpCAAAH0AAB1MAIAA\\=\\=\\,aM48gAA\\=\", payload=(int)96, ssrc=(uint)3315029550, clock-base=(uint)3926529534, seqnum-base=(uint)45576' ! gstrtpjitterbuffer drop-on-latency=true latency=500 ! rtph264depay ! ffdec_h264 ! ffmpegcolorspace ! matroskamux ! filesink location=video.mkv Produces a playable, but large file. This "works" but is an ineffective solution because uncompressed video is too large. If I try to add in a x264 encode before the matroskamux, to compress the video, after it has been received: gst-launch-0.10 udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5010 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)\"Z0KAHukBQHpCAAAH0AAB1MAIAA\\=\\=\\,aM48gAA\\=\", payload=(int)96, ssrc=(uint)3315029550, clock-base=(uint)3926529534, seqnum-base=(uint)45576' ! gstrtpjitterbuffer drop-on-latency=true latency=500 ! rtph264depay ! ffdec_h264 ! x264enc ! matroskamux ! filesink location=video.mkv This produces a playable, compressed video file (although the playhead progress is not liner, it starts in the middle and slows down increasingly as it approaches the end of the movie). But this is an inelegant solution because I needed to decompress, then re compress the video as it comes in. There must be a way to take the incoming H264 stream and write it directly to a file. On Tue, May 15, 2012 at 10:02 AM, Tiago Katcipis <[hidden email]> wrote: Hi, -- W.A. Garrett Weaver
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So here's an update.
All the scripts I ran, and gave results to, in the previous email, were all run locally, on one machine. I tried to use my imperfect, but functional, solution in my real application: wireless video streaming from one device to another. It didn't work as well as it did when both transmit and receive scripts were running on the same machine. The recorded video looked like this: http://youtu.be/YfsFI7PlStw Note: At the edges of reception, when I'm outside my yard, video starts getting very pixlated and the framerates drop. That's not really GStreamers fault, many of the packets are just getting dropped. I'm most concerned with the frame rates when I'm close to my router. I will say that my display script showed video perfectly smooth on the screen, responsively and with a high frame rate, so I don't think there's any problems with the network (at close enough range). gst-launch-0.10 udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5010 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)\"Z0KAHukBQHpCAAAH0AAB1MAIAA\\=\\=\\,aM48gAA\\=\", payload=(int)96, ssrc=(uint)3315029550, clock-base=(uint)3926529534, seqnum-base=(uint)45576' ! gstrtpjitterbuffer drop-on-latency=true latency=500 ! rtph264depay ! ffdec_h264 ! ffmpegcolorspace ! coglogoinsert location="equisightoverlay.png" ! ffmpegcolorspace ! ximagesink sync=false But as you can see with the video recording above the video isn't recorded linearly. It pushes some frames through quickly, pauses, and then quickly pushes frames through again. It seems like all the frames are getting recorded, but they're not moving at a consistent pace. I decided to make some adjustments to the record script to try and reduce this effect by increasing the latency of gstrtpjitterbuffer, adding a queue before x264enc and setting latency on the x264enc to zero. gst-launch-0.10 udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5010 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)\"Z0KAHukBQHpCAAAH0AAB1MAIAA\\=\\=\\,aM48gAA\\=\", payload=(int)96, ssrc=(uint)3315029550, clock-base=(uint)3926529534, seqnum-base=(uint)45576' ! queue ! gstrtpjitterbuffer drop-on-latency=true latency=2000 ! rtph264depay ! ffdec_h264 ! queue max-size-buffers=0 max-size-bytes=0 max-size-time=0 ! x264enc tune=zerolatency ! matroskamux ! filesink location=video.mkv The result was this: http://youtu.be/x2QbLaImkt0 It looks like it helped make the frame rate a bit more consistent, but not by much. Does anyone have any ideas on how to improve the inconsistent frame rate problem? I have a hunch it's caused by the x264enc element (or lack of using it correctly). Of course if I could sidestep having to re-compress the video, this problem would be alleviated. But I'm sure I'm missing a major setting somewhere that would solve this problem. On Wed, May 16, 2012 at 11:28 AM, W.A. Garrett Weaver <[hidden email]> wrote: Thank you for the suggestions Rufael and Tiago. -- W.A. Garrett Weaver
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I found the solution to the intermittent delay problem. What you have to do is reduce the latency on gstrtpjitterbuffer to 10ms instead of being 500ms.
gst-launch-0.10 udpsrc multicast-group=224.1.1.1 auto-multicast=true port=5010 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)\"Z0KAHukBQHpCAAAH0AAB1MAIAA\\=\\=\\,aM48gAA\\=\", payload=(int)96, ssrc=(uint)3315029550, clock-base=(uint)3926529534, seqnum-base=(uint)45576' ! gstrtpjitterbuffer drop-on-latency=true latency=10 ! rtph264depay ! ffdec_h264 ! x264enc ! matroskamux ! filesink location=movie.mkv The result is this: http://www.youtube.com/watch?v=br--9h3-g4U This works good if the computer on the receiving end is sufficiently fast enough to compress video, since mine is, this is an adequate solution. Still, it would be nice to record the h264 stream directly to a file instead of having to re compress. On Wed, May 16, 2012 at 2:01 PM, W.A. Garrett Weaver <[hidden email]> wrote: So here's an update. -- W.A. Garrett Weaver
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Re: How to save incoming h264 stream without re-encoding?
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On 05/24/2012 09:54 PM, W.A. Garrett Weaver wrote:
> I found the solution to the intermittent delay problem. What you have to > do is reduce the latency on gstrtpjitterbuffer to 10ms instead of being > 500ms. > > gst-launch-0.10 udpsrc multicast-group=224.1.1.1 auto-multicast=true > port=5010 caps='application/x-rtp, media=(string)video, > clock-rate=(int)90000, encoding-name=(string)H264, > sprop-parameter-sets=(string)\"Z0KAHukBQHpCAAAH0AAB1MAIAA\\=\\=\\,aM48gAA\\=\", > payload=(int)96, ssrc=(uint)3315029550, clock-base=(uint)3926529534, > seqnum-base=(uint)45576' ! gstrtpjitterbuffer drop-on-latency=true > latency=10 ! rtph264depay ! ffdec_h264 ! x264enc ! matroskamux ! > filesink location=movie.mkv > > The result is this: > http://www.youtube.com/watch?v=br--9h3-g4U > > This works good if the computer on the receiving end is sufficiently > fast enough to compress video, since mine is, this is an adequate > solution. Still, it would be nice to record the h264 stream directly to > a file instead of having to re compress. I do something somewhat similar (I capture encoded video from IP network cameras and only remux to a file)... What happens if you have rtph264hdepay ! matroskamux ! filsink??? Why doesn't that work for you? -- Nathanael d. Noblet t 403.875.4613 _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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When I tried that, filesink makes a file that is 0 bytes. In theory doing that should work fine, but when I tried it: it didn't.
That's funny that it works for you, I have no idea why it doesn't work for me, it would help if rtph264depay was documented. Is it my version of gstreamer? I'm using 0.10 On Friday, May 25, 2012, Nathanael D. Noblet <[hidden email]> wrote: > On 05/24/2012 09:54 PM, W.A. Garrett Weaver wrote: >> >> I found the solution to the intermittent delay problem. What you have to >> do is reduce the latency on gstrtpjitterbuffer to 10ms instead of being >> 500ms. >> >> gst-launch-0.10 udpsrc multicast-group=224.1.1.1 auto-multicast=true >> port=5010 caps='application/x-rtp, media=(string)video, >> clock-rate=(int)90000, encoding-name=(string)H264, >> sprop-parameter-sets=(string)\"Z0KAHukBQHpCAAAH0AAB1MAIAA\\=\\=\\,aM48gAA\\=\", >> payload=(int)96, ssrc=(uint)3315029550, clock-base=(uint)3926529534, >> seqnum-base=(uint)45576' ! gstrtpjitterbuffer drop-on-latency=true >> latency=10 ! rtph264depay ! ffdec_h264 ! x264enc ! matroskamux ! >> filesink location=movie.mkv >> >> The result is this: >> Helmet Cam Record 3 >> >> This works good if the computer on the receiving end is sufficiently >> fast enough to compress video, since mine is, this is an adequate >> solution. Still, it would be nice to record the h264 stream directly to >> a file instead of having to re compress. > > I do something somewhat similar (I capture encoded video from IP network cameras and only remux to a file)... > > What happens if you have rtph264hdepay ! matroskamux ! filsink??? Why doesn't that work for you? > > > -- > Nathanael d. Noblet > t 403.875.4613 > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel > -- W.A. Garrett Weaver
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Re: How to save incoming h264 stream without re-encoding?
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Il 26/05/2012 00:34, W.A. Garrett Weaver ha scritto:
When I tried that, filesink makes a file that is 0 bytes. In theory doing that should work fine, but when I tried it: it didn't. add h264parse after the depayloder will work with all the muxer you tryed, add also -e to gst-launch, Nicola Is it my version of gstreamer? I'm using 0.10 _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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I tried adding in h264parse and it worked! Not only that, but I also don't have the weird play head problems I had before. Thanks.
On Fri, May 25, 2012 at 4:10 PM, Mailing List SVR <[hidden email]> wrote:
-- W.A. Garrett Weaver
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