possible bug in `qtdemx` element
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I have a video file (no audio) which plays nicely in
The video is here: I have analyzed the video with `ffprobe` (in many ways) and I cannot find any problems with it. The problem is: qtdemux doesn't play nicely with the video; and so I cannot use GES with the video (which is my ultimate goal). The problem apparently exists in Gstreamer 1.14.4 and 1.16.0 (these are the two versions I tested). The problem is easily reproduced using `gst-launch` commands. # ------------------------ # Gstreamer 1.14.4 (mingw windows) # ------------------------ $ gst-launch-1.0 filesrc location=screencap.mp4 ! decodebin ! playsink Setting pipeline to PAUSED ... Pipeline is PREROLLING ... Redistribute latency... Redistribute latency... ERROR: from element /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQTDemux:qtdemux0: Internal data stream error. Additional debug info: qtdemux.c(6073): gst_qtdemux_loop (): /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQTDemux:qtdemux0: streaming stopped, reason not-negotiated (-4) ERROR: pipeline doesn't want to preroll. Setting pipeline to NULL ... Freeing pipeline ... # ------------------------ # Gstreamer 1.16.0 (mingw windows) # ------------------------ $ gst-launch-1.0 filesrc location=screencap.mp4 ! decodebin ! playsink Setting pipeline to PAUSED ... Pipeline is PREROLLING ... Redistribute latency... Redistribute latency... WARNING: no real random source present! ERROR: from element /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQTDemux:qtdemux0: Internal data stream error. Additional debug info: ../gst/isomp4/qtdemux.c(6607): gst_qtdemux_loop (): /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQTDemux:qtdemux0: streaming stopped, reason not-negotiated (-4) ERROR: pipeline doesn't want to preroll. Setting pipeline to NULL ... Freeing pipeline ... _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
Re: possible bug in `qtdemx` element
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`ges-launch-1.0 +clip ~/Downloads/screencap.mp4` works just fine here. - Thibault On Wed, Jun 19, 2019 at 2:18 PM David Ing <[hidden email]> wrote:
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Thibault -- Which OS are you using? Which version of Gstreamer? This is what happens on Windows 10 with gstreamer 1.16.0-mingw: $ ges-launch-1.0 +clip screencap.mp4 <position: 0:00:00.066733333 duration: 0:04:13.600000001 speed: 1.000000 /> Segmentation fault On Wed, Jun 19, 2019 at 11:40 AM Thibault Saunier <[hidden email]> wrote:
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Re: possible bug in `qtdemx` element
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master on fedora30. You should provide a stack trace if you get a segfault. On Wed, Jun 19, 2019 at 2:52 PM David Ing <[hidden email]> wrote:
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I can't provide a stack trace because there are no debug symbols provided with `1.16.0-mingw`. On Wed, Jun 19, 2019 at 12:15 PM Thibault Saunier <[hidden email]> wrote:
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The segmentation fault (ges-launch-1.0) did not occur for the 1.16.0-msvc build, just 1.16.0-mingw. So there is apparently something wrong with the mingw build. So the problem has now been documented in all these Windows builds.
So I guess we are dealing with a problem related to the mingw build. On Wed, Jun 19, 2019 at 12:19 PM David Ing <[hidden email]> wrote:
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Since this is a mingw-only problem, I created a bug for cerbero. On Wed, Jun 19, 2019 at 2:00 PM David Ing <[hidden email]> wrote:
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