How to read data from file as from live source?
sonntex
sonntex at gmail.com
Thu Dec 29 15:23:40 UTC 2016
On Mon, 26 Dec 2016 16:22:05 +0000, Tim wrote:
> You can use appsink sync=true to make appsink sync to the pipeline
> clock, then you get the frames in "real time" according to the
> timestamps in the file.
> In C code: g_object_set (appsink, "sync", TRUE, NULL);
Thanks, Tim.
I have already set sync parameter to appsink and it still not works. So, I
wrote small example to reproduce this behavior and noticed that timestamps
are very strange.
#include <gst/gst.h>
#include <gst/app/gstappsink.h>
...
GstFlowReturn callback_new_sample(GstAppSink* sink, gpointer opaque)
{
GstSample* sample = gst_app_sink_pull_sample(GST_APP_SINK(sink));
GstBuffer* buffer = gst_sample_get_buffer(sample);
unsigned int pts = GST_BUFFER_PTS(buffer) / 1000000;
GST_INFO("pts %u", pts);
gst_sample_unref(sample);
return GST_FLOW_OK;
}
...
int main(int arc, char* argv[])
{
const char* filename = argv[1];
...
source_ = gst_element_factory_make("filesrc", nullptr);
g_object_set(G_OBJECT(source_), "location", filename, nullptr);
demux_ = gst_element_factory_make("qtdemux", nullptr);
g_signal_connect(G_OBJECT(demux_), "pad-added",
G_CALLBACK(callback_pad_added), nullptr);
sink_ = gst_element_factory_make("appsink", nullptr);
g_object_set(G_OBJECT(sink_), "sync", TRUE, nullptr);
GstAppSinkCallbacks callbacks;
callbacks.eos = callback_eos;
callbacks.new_preroll = callback_new_preroll;
callbacks.new_sample = callback_new_sample;
gst_app_sink_set_callbacks(GST_APP_SINK(sink_), &callbacks, nullptr,
nullptr);
pipeline_ = gst_pipeline_new(nullptr);
gst_bin_add_many(GST_BIN(pipeline_), source_, demux_, sink_, nullptr);
gst_element_link_many(source_, demux_, nullptr);
gst_element_set_state(pipeline_, GST_STATE_PLAYING);
...
return 0;
}
Log looks like:
# GST_DEBUG=4 ./a.out test.mp4
0:00:00.000024789 1351 0xedf600 INFO GST_INIT
gst.c:511:init_pre: Initializing GStreamer Core Library version 1.8.3
0:00:00.000046383 1351 0xedf600 INFO GST_INIT
gst.c:512:init_pre: Using library installed in /usr/lib64
0:00:00.000051828 1351 0xedf600 INFO GST_INIT
gst.c:523:init_pre: Linux work 4.4.6-gentoo #1 SMP Mon Jun 20 21:47:25 MSK
2016 x86_64
0:00:00.000166972 1351 0xedf600 INFO GST_INIT
gstmessage.c:119:_priv_gst_message_initialize: init messages
0:00:00.000382660 1351 0xedf600 INFO GST_INIT
gstcontext.c:83:_priv_gst_context_initialize: init contexts
0:00:00.000474209 1351 0xedf600 INFO GST_PLUGIN_LOADING
gstplugin.c:316:_priv_gst_plugin_initialize: registering 0 static plugins
0:00:00.000517428 1351 0xedf600 INFO GST_PLUGIN_LOADING
gstplugin.c:224:gst_plugin_register_static: registered static plugin
"staticelements"
0:00:00.000523021 1351 0xedf600 INFO GST_PLUGIN_LOADING
gstplugin.c:226:gst_plugin_register_static: added static plugin
"staticelements", result: 1
0:00:00.000533622 1351 0xedf600 INFO GST_REGISTRY
gstregistry.c:1723:ensure_current_registry: reading registry cache:
/home/sonntex/.cache/gstreamer-1.0/registry.x86_64.bin
0:00:00.006085663 1351 0xedf600 INFO GST_REGISTRY
gstregistrybinary.c:619:priv_gst_registry_binary_read_cache: loaded
/home/sonntex/.cache/gstreamer-1.0/registry.x86_64.bin in 0.005544 seconds
0:00:00.006109244 1351 0xedf600 INFO GST_REGISTRY
gstregistry.c:1579:scan_and_update_registry: Validating plugins from
registry cache: /home/sonntex/.cache/gstreamer-1.0/registry.x86_64.bin
0:00:00.006453591 1351 0xedf600 INFO GST_REGISTRY
gstregistry.c:1681:scan_and_update_registry: Registry cache has not changed
0:00:00.006459902 1351 0xedf600 INFO GST_REGISTRY
gstregistry.c:1758:ensure_current_registry: registry reading and updating
done, result = 1
0:00:00.006463467 1351 0xedf600 INFO GST_INIT
gst.c:724:init_post: GLib runtime version: 2.48.2
0:00:00.006467367 1351 0xedf600 INFO GST_INIT
gst.c:726:init_post: GLib headers version: 2.48.2
0:00:00.006470279 1351 0xedf600 INFO GST_INIT
gst.c:727:init_post: initialized GStreamer successfully
0:00:00.006688576 1351 0xedf600 INFO GST_PLUGIN_LOADING
gstplugin.c:842:_priv_gst_plugin_load_file_for_registry: plugin
"/usr/lib64/gstreamer-1.0/libgstcoreelements.so" loaded
0:00:00.006696099 1351 0xedf600 INFO GST_ELEMENT_FACTORY
gstelementfactory.c:364:gst_element_factory_create: creating element
"filesrc"
0:00:00.006751118 1351 0xedf600 INFO GST_ELEMENT_PADS
gstelement.c:659:gst_element_add_pad:<GstBaseSrc at 0x1042110> adding pad 'src'
0:00:00.006767442 1351 0xedf600 INFO filesrc
gstfilesrc.c:262:gst_file_src_set_location: filename : test.mp4
0:00:00.006771123 1351 0xedf600 INFO filesrc
gstfilesrc.c:263:gst_file_src_set_location: uri :
file:///home/sonntex/devel/test/test.mp4
0:00:00.007559798 1351 0xedf600 INFO GST_PLUGIN_LOADING
gstplugin.c:842:_priv_gst_plugin_load_file_for_registry: plugin
"/usr/lib64/gstreamer-1.0/libgstisomp4.so" loaded
0:00:00.007568188 1351 0xedf600 INFO GST_ELEMENT_FACTORY
gstelementfactory.c:364:gst_element_factory_create: creating element
"qtdemux"
0:00:00.007619874 1351 0xedf600 INFO GST_ELEMENT_PADS
gstelement.c:659:gst_element_add_pad:<GstQTDemux at 0x104fa00> adding pad
'sink'
0:00:00.007698294 1351 0xedf600 INFO GST_PLUGIN_LOADING
gstplugin.c:842:_priv_gst_plugin_load_file_for_registry: plugin
"/usr/lib64/gstreamer-1.0/libgstapp.so" loaded
0:00:00.007704788 1351 0xedf600 INFO GST_ELEMENT_FACTORY
gstelementfactory.c:364:gst_element_factory_create: creating element
"appsink"
0:00:00.007763602 1351 0xedf600 INFO GST_ELEMENT_PADS
gstelement.c:659:gst_element_add_pad:<GstBaseSink at 0x10551f0> adding pad
'sink'
0:00:00.007775545 1351 0xedf600 INFO GST_ELEMENT_FACTORY
gstelementfactory.c:364:gst_element_factory_create: creating element
"pipeline"
0:00:00.007807031 1351 0xedf600 INFO GST_ELEMENT_PADS
gstutils.c:1573:gst_element_link_pads_full: trying to link element
filesrc0:(any) to element qtdemux0:(any)
0:00:00.007813983 1351 0xedf600 INFO GST_PADS
gstutils.c:932:gst_pad_check_link: trying to link filesrc0:src and
qtdemux0:sink
0:00:00.007825108 1351 0xedf600 INFO GST_PADS
gstutils.c:1446:prepare_link_maybe_ghosting: filesrc0 and qtdemux0 in same
bin, no need for ghost pads
0:00:00.007831980 1351 0xedf600 INFO GST_PADS
gstpad.c:2315:gst_pad_link_prepare: trying to link filesrc0:src and
qtdemux0:sink
0:00:00.007837913 1351 0xedf600 INFO GST_PADS
gstpad.c:2521:gst_pad_link_full: linked filesrc0:src and qtdemux0:sink,
successful
0:00:00.007841939 1351 0xedf600 INFO GST_EVENT
gstevent.c:1382:gst_event_new_reconfigure: creating reconfigure event
0:00:00.007845735 1351 0xedf600 INFO GST_EVENT
gstpad.c:5634:gst_pad_send_event_unchecked:<filesrc0:src> Received event on
flushing pad. Discarding
0:00:00.007856986 1351 0xedf600 INFO GST_STATES
gstbin.c:2316:gst_bin_element_set_state:<appsink0> current NULL pending
VOID_PENDING, desired next READY
0:00:00.007863943 1351 0xedf600 INFO GST_STATES
gstelement.c:2372:gst_element_continue_state:<appsink0> completed state
change to READY
0:00:00.007867942 1351 0xedf600 INFO GST_STATES
gstelement.c:2277:_priv_gst_element_state_changed:<appsink0> notifying
about state-changed NULL to READY (VOID_PENDING pending)
0:00:00.007876749 1351 0xedf600 INFO GST_STATES
gstbin.c:2764:gst_bin_change_state_func:<pipeline0> child 'appsink0'
changed state to 2(READY) successfully
0:00:00.007882375 1351 0xedf600 INFO GST_STATES
gstbin.c:2316:gst_bin_element_set_state:<qtdemux0> current NULL pending
VOID_PENDING, desired next READY
0:00:00.007886530 1351 0xedf600 INFO GST_STATES
gstelement.c:2372:gst_element_continue_state:<qtdemux0> completed state
change to READY
0:00:00.007889458 1351 0xedf600 INFO GST_STATES
gstelement.c:2277:_priv_gst_element_state_changed:<qtdemux0> notifying
about state-changed NULL to READY (VOID_PENDING pending)
0:00:00.007894090 1351 0xedf600 INFO GST_STATES
gstbin.c:2764:gst_bin_change_state_func:<pipeline0> child 'qtdemux0'
changed state to 2(READY) successfully
0:00:00.007898132 1351 0xedf600 INFO GST_STATES
gstbin.c:2316:gst_bin_element_set_state:<filesrc0> current NULL pending
VOID_PENDING, desired next READY
0:00:00.007906107 1351 0xedf600 INFO GST_STATES
gstelement.c:2372:gst_element_continue_state:<filesrc0> completed state
change to READY
0:00:00.007910314 1351 0xedf600 INFO GST_STATES
gstelement.c:2277:_priv_gst_element_state_changed:<filesrc0> notifying
about state-changed NULL to READY (VOID_PENDING pending)
0:00:00.007915219 1351 0xedf600 INFO GST_STATES
gstbin.c:2764:gst_bin_change_state_func:<pipeline0> child 'filesrc0'
changed state to 2(READY) successfully
0:00:00.007921417 1351 0xedf600 INFO GST_STATES
gstelement.c:2347:gst_element_continue_state:<pipeline0> committing state
from NULL to READY, pending PLAYING, next PAUSED
0:00:00.007925725 1351 0xedf600 INFO GST_STATES
gstelement.c:2277:_priv_gst_element_state_changed:<pipeline0> notifying
about state-changed NULL to READY (PLAYING pending)
0:00:00.007929851 1351 0xedf600 INFO GST_STATES
gstelement.c:2354:gst_element_continue_state:<pipeline0> continue state
change READY to PAUSED, final PLAYING
0:00:00.007935450 1351 0xedf600 INFO GST_STATES
gstbin.c:2316:gst_bin_element_set_state:<appsink0> current READY pending
VOID_PENDING, desired next PAUSED
0:00:00.007942516 1351 0xedf600 INFO GST_STATES
gstbin.c:2770:gst_bin_change_state_func:<pipeline0> child 'appsink0' is
changing state asynchronously to PAUSED
0:00:00.007947776 1351 0xedf600 INFO GST_STATES
gstbin.c:2316:gst_bin_element_set_state:<qtdemux0> current READY pending
VOID_PENDING, desired next PAUSED
0:00:00.007953441 1351 0xedf600 INFO filesrc
gstfilesrc.c:465:gst_file_src_start:<filesrc0> opening file test.mp4
0:00:00.007964619 1351 0xedf600 WARN basesrc
gstbasesrc.c:3489:gst_base_src_start_complete:<filesrc0> pad not activated
yet
0:00:00.007975058 1351 0xedf600 INFO filesrc
gstfilesrc.c:465:gst_file_src_start:<filesrc0> opening file test.mp4
0:00:00.007991495 1351 0xedf600 INFO task
gsttask.c:451:gst_task_set_lock: setting stream lock 0x10462e0 on task
0x105a050
0:00:00.007996993 1351 0xedf600 INFO GST_PADS
gstpad.c:5980:gst_pad_start_task:<qtdemux0:sink> created task 0x105a050
0:00:00.008024612 1351 0xedf600 INFO GST_STATES
gstelement.c:2372:gst_element_continue_state:<qtdemux0> completed state
change to PAUSED
0:00:00.008030469 1351 0xedf600 INFO GST_STATES
gstelement.c:2277:_priv_gst_element_state_changed:<qtdemux0> notifying
about state-changed READY to PAUSED (VOID_PENDING pending)
0:00:00.008037059 1351 0xedf600 INFO GST_STATES
gstbin.c:2764:gst_bin_change_state_func:<pipeline0> child 'qtdemux0'
changed state to 3(PAUSED) successfully
0:00:00.008042842 1351 0xedf600 INFO GST_STATES
gstbin.c:2316:gst_bin_element_set_state:<filesrc0> current READY pending
VOID_PENDING, desired next PAUSED
0:00:00.008049092 1351 0xedf600 INFO GST_STATES
gstelement.c:2372:gst_element_continue_state:<filesrc0> completed state
change to PAUSED
0:00:00.008053129 1351 0xedf600 INFO GST_STATES
gstelement.c:2277:_priv_gst_element_state_changed:<filesrc0> notifying
about state-changed READY to PAUSED (VOID_PENDING pending)
0:00:00.008058672 1351 0xedf600 INFO GST_STATES
gstbin.c:2764:gst_bin_change_state_func:<pipeline0> child 'filesrc0'
changed state to 3(PAUSED) successfully
0:00:00.008089488 1351 0x104c2d0 INFO qtdemux
qtdemux.c:12065:qtdemux_parse_tree:<qtdemux0> timescale: 1800
0:00:00.008099620 1351 0x104c2d0 INFO qtdemux
qtdemux.c:12066:qtdemux_parse_tree:<qtdemux0> duration: 107969
0:00:00.008105428 1351 0x104c2d0 WARN qtdemux
qtdemux.c:2651:qtdemux_parse_trex:<qtdemux0> failed to find fragment
defaults for stream 1
0:00:00.008125053 1351 0x104c2d0 INFO qtdemux
qtdemux.c:9770:qtdemux_parse_trak:<qtdemux0> type avc1 caps video/x-h264,
stream-format=(string)avc, alignment=(string)au, level=(string)4,
profile=(string)main, codec_data=(buffer)014d0028ffe1000d674d00288d8d28
0a00b760201001000468ee3c80
0:00:00.008165490 1351 0x104c2d0 WARN basesrc
gstbasesrc.c:2396:gst_base_src_update_length:<filesrc0> processing at or
past EOS
0:00:00.008170281 1351 0x104c2d0 INFO GST_SCHEDULING
gstpad.c:4757:gst_pad_get_range_unchecked:<filesrc0:src> getrange failed,
flow: eos
0:00:00.008175076 1351 0x104c2d0 INFO GST_SCHEDULING
gstpad.c:4972:gst_pad_pull_range:<qtdemux0:sink> pullrange failed, flow: eos
0:00:00.008195578 1351 0x104c2d0 INFO GST_ELEMENT_PADS
gstelement.c:907:gst_element_get_static_pad: found pad qtdemux0:sink
0:00:00.008214760 1351 0x104c2d0 INFO GST_EVENT
gstevent.c:679:gst_event_new_caps: creating caps event video/x-h264,
stream-format=(string)avc, alignment=(string)au, level=(string)4,
profile=(string)main,
codec_data=(buffer)014d0028ffe1000d674d00288d8d280a00b760201001000468ee3c80,
width=(int)1280, height=(int)720, framerate=(fraction)30000/1001,
pixel-aspect-ratio=(fraction)1/1
0:00:00.008230859 1351 0x104c2d0 INFO GST_ELEMENT_PADS
gstelement.c:659:gst_element_add_pad:<qtdemux0> adding pad 'video_0'
0:00:00.008243006 1351 0x104c2d0 INFO default
main.cpp:42:callback_pad_added: pad video/x-h264,
stream-format=(string)avc, alignment=(string)au, level=(string)4,
profile=(string)main,
codec_data=(buffer)014d0028ffe1000d674d00288d8d280a00b760201001000468ee3c80,
width=(int)1280, height=(int)720, framerate=(fraction)30000/1001,
pixel-aspect-ratio=(fraction)1/1
0:00:00.008249071 1351 0x104c2d0 INFO default
main.cpp:46:callback_pad_added: pad linking
0:00:00.008252887 1351 0x104c2d0 INFO GST_ELEMENT_PADS
gstutils.c:1573:gst_element_link_pads_full: trying to link element
qtdemux0:video_0 to element appsink0:sink
0:00:00.008258225 1351 0x104c2d0 INFO GST_ELEMENT_PADS
gstelement.c:907:gst_element_get_static_pad: found pad qtdemux0:video_0
0:00:00.008262557 1351 0x104c2d0 INFO GST_ELEMENT_PADS
gstelement.c:907:gst_element_get_static_pad: found pad appsink0:sink
0:00:00.008266602 1351 0x104c2d0 INFO GST_PADS
gstutils.c:1446:prepare_link_maybe_ghosting: qtdemux0 and appsink0 in same
bin, no need for ghost pads
0:00:00.008272895 1351 0x104c2d0 INFO GST_PADS
gstpad.c:2315:gst_pad_link_prepare: trying to link qtdemux0:video_0 and
appsink0:sink
0:00:00.008281034 1351 0x104c2d0 INFO GST_PADS
gstpad.c:2521:gst_pad_link_full: linked qtdemux0:video_0 and appsink0:sink,
successful
0:00:00.008285766 1351 0x104c2d0 INFO GST_EVENT
gstevent.c:1382:gst_event_new_reconfigure: creating reconfigure event
0:00:00.008303260 1351 0x104c2d0 INFO GST_EVENT
gstevent.c:760:gst_event_new_segment: creating segment event time segment
start=39:01:02.610400000, offset=0:00:00.000000000,
stop=39:02:02.593177777, rate=1.000000, applied_rate=1.000000, flags=0x00,
time=0:00:00.000000000, base=0:00:00.000000000, position
39:01:02.610400000, duration 99:99:99.999999999
0:00:00.008322506 1351 0x104c2d0 INFO GST_EVENT
gstevent.c:679:gst_event_new_caps: creating caps event video/x-h264,
stream-format=(string)avc, alignment=(string)au, level=(string)4,
profile=(string)main,
codec_data=(buffer)014d0028ffe1000d674d00288d8d280a00b760201001000468ee3c80,
width=(int)1280, height=(int)720, framerate=(fraction)30000/1001,
pixel-aspect-ratio=(fraction)1/1
0:00:00.008384508 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462610
0:00:00.008406598 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462643
0:00:00.008416023 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462677
0:00:00.008424983 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462710
0:00:00.008433337 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462744
0:00:00.008441179 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462777
0:00:00.008449325 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462810
0:00:00.008457575 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462844
0:00:00.008465503 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462877
0:00:00.008473565 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462911
0:00:00.008481699 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462944
0:00:00.008489477 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140462977
0:00:00.008497337 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140463011
...
0:00:00.023391797 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140522493
0:00:00.023399748 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140522526
0:00:00.023407601 1351 0x104c2d0 INFO default
main.cpp:30:callback_new_sample: pts 140522560
0:00:00.023414189 1351 0x104c2d0 INFO default
main.cpp:15:callback_eos: eos
0:00:00.023424894 1351 0x104c2d0 INFO GST_STATES
gstbin.c:3238:bin_handle_async_done:<pipeline0> committing state from READY
to PAUSED, old pending PLAYING
0:00:00.023430630 1351 0x104c2d0 INFO GST_STATES
gstbin.c:3267:bin_handle_async_done:<pipeline0> continue state change,
pending PLAYING
0:00:00.023435062 1351 0x104c2d0 INFO GST_STATES
gstelement.c:2277:_priv_gst_element_state_changed:<pipeline0> notifying
about state-changed READY to PAUSED (PLAYING pending)
0:00:00.023471893 1351 0x7fb220009370 INFO GST_STATES
gstbin.c:3061:gst_bin_continue_func:<pipeline0> continue state change
PAUSED to PLAYING, final PLAYING
0:00:00.023551495 1351 0x7fb220009370 INFO GST_EVENT
gstevent.c:1253:gst_event_new_latency: creating latency event
0:00:00.000000000
0:00:00.023567781 1351 0x7fb220009370 INFO bin
gstbin.c:2593:gst_bin_do_latency_func:<pipeline0> configured latency of
0:00:00.000000000
0:00:00.023580785 1351 0x7fb220009370 INFO GST_STATES
gstbin.c:2316:gst_bin_element_set_state:<appsink0> current PAUSED pending
VOID_PENDING, desired next PLAYING
0:00:00.023588790 1351 0x7fb220009370 INFO GST_STATES
gstelement.c:2372:gst_element_continue_state:<appsink0> completed state
change to PLAYING
0:00:00.023594097 1351 0x7fb220009370 INFO GST_STATES
gstelement.c:2277:_priv_gst_element_state_changed:<appsink0> notifying
about state-changed PAUSED to PLAYING (VOID_PENDING pending)
0:00:00.023598944 1351 0x104c2d0 INFO task
gsttask.c:316:gst_task_func:<qtdemux0:sink> Task going to paused
0:00:00.023600873 1351 0x7fb220009370 INFO GST_STATES
gstbin.c:2764:gst_bin_change_state_func:<pipeline0> child 'appsink0'
changed state to 4(PLAYING) successfully
0:00:00.023610995 1351 0x7fb220009370 INFO GST_STATES
gstbin.c:2316:gst_bin_element_set_state:<qtdemux0> current PAUSED pending
VOID_PENDING, desired next PLAYING
0:00:00.023616256 1351 0x7fb220009370 INFO GST_STATES
gstelement.c:2372:gst_element_continue_state:<qtdemux0> completed state
change to PLAYING
0:00:00.023620188 1351 0x7fb220009370 INFO GST_STATES
gstelement.c:2277:_priv_gst_element_state_changed:<qtdemux0> notifying
about state-changed PAUSED to PLAYING (VOID_PENDING pending)
0:00:00.023625923 1351 0x7fb220009370 INFO GST_STATES
gstbin.c:2764:gst_bin_change_state_func:<pipeline0> child 'qtdemux0'
changed state to 4(PLAYING) successfully
0:00:00.023630932 1351 0x7fb220009370 INFO GST_STATES
gstbin.c:2316:gst_bin_element_set_state:<filesrc0> current PAUSED pending
VOID_PENDING, desired next PLAYING
0:00:00.023635868 1351 0x7fb220009370 INFO GST_STATES
gstelement.c:2372:gst_element_continue_state:<filesrc0> completed state
change to PLAYING
0:00:00.023639614 1351 0x7fb220009370 INFO GST_STATES
gstelement.c:2277:_priv_gst_element_state_changed:<filesrc0> notifying
about state-changed PAUSED to PLAYING (VOID_PENDING pending)
0:00:00.023644775 1351 0x7fb220009370 INFO GST_STATES
gstbin.c:2764:gst_bin_change_state_func:<pipeline0> child 'filesrc0'
changed state to 4(PLAYING) successfully
0:00:00.023650205 1351 0x7fb220009370 INFO GST_STATES
gstelement.c:2372:gst_element_continue_state:<pipeline0> completed state
change to PLAYING
0:00:00.023654303 1351 0x7fb220009370 INFO GST_STATES
gstelement.c:2277:_priv_gst_element_state_changed:<pipeline0> notifying
about state-changed PAUSED to PLAYING (VOID_PENDING pending)
^C
As you can see all frames were read before pipeline moved to playing state
and timestamps counted not from zero. Why? Is it a problem of my test.mp4
file?
# gst-discoverer-1.0 -v test.mp4
Analyzing file:///home/sonntex/devel/test/test.mp4
Done discovering file:///home/sonntex/devel/test/test.mp4
Topology:
container: video/quicktime, variant=(string)iso
video: video/x-h264, stream-format=(string)avc, alignment=(string)au,
level=(string)4, profile=(string)main,
codec_data=(buffer)014d0028ffe1000d674d00288d8d280a00b760201001000468ee3c80,
width=(int)1280, height=(int)720, framerate=(fraction)30000/1001,
pixel-aspect-ratio=(fraction)1/1
Tags:
video codec: H.264 / AVC
bitrate: 4938555
language code: en
datetime: 2016-12-26T15:02:36Z
container format: ISO MP4/M4A
Codec:
video/x-h264, stream-format=(string)avc, alignment=(string)au,
level=(string)4, profile=(string)main,
codec_data=(buffer)014d0028ffe1000d674d00288d8d280a00b760201001000468ee3c80,
width=(int)1280, height=(int)720, framerate=(fraction)30000/1001,
pixel-aspect-ratio=(fraction)1/1
Additional info:
None
Stream ID:
d83440ba6fe683cff74bed3048a01ab4826a1e09dc9345c944fb75c69014812e/001
Width: 1280
Height: 720
Depth: 24
Frame rate: 30000/1001
Pixel aspect ratio: 1/1
Interlaced: false
Bitrate: 4938555
Max bitrate: 0
Properties:
Duration: 0:00:59.982777777
Seekable: yes
Tags:
video codec: H.264 / AVC
bitrate: 4938555
language code: en
datetime: 2016-12-26T15:02:36Z
container format: ISO MP4/M4A
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