...file mp4 in 3gp
Per ora,
senza "
Shell ", sono riuscito solo a ottenere da un file video MP4 un file 3GP
solo video:
Library "libgstreamer-1.0"
Private Enum GST_STATE_VOID_PENDING = 0, GST_STATE_NULL, GST_STATE_READY, GST_STATE_PAUSED, GST_STATE_PLAYING
Private Const GST_FORMAT_TIME As Integer = 3
' gst_init (int *argc, char **argv[])
' Initializes the GStreamer library, setting up internal path lists, registering built-in elements, and loading standard plugins.
Private Extern gst_init(argc As Pointer, argv As Pointer)
' GstElement * gst_parse_launch (const gchar *pipeline_description, GError **error)
' Create a new pipeline based on command line syntax.
Private Extern gst_parse_launch(description As String, GError As Pointer) As Pointer
' GstStateChangeReturn gst_element_set_state(GstElement *element, GstState state)
' Sets the state of the element.
Private Extern gst_element_set_state(gstelement As Pointer, state As Integer) As Integer
' gboolean gst_element_query_duration(GstElement *element, GstFormat format, gint64 *duration)
' Queries an element for the total stream duration in nanoseconds.
Private Extern gst_element_query_duration(gselement As Pointer, formatI As Integer, duration As Pointer) As Boolean
' gboolean gst_element_query_position (GstElement *element, GstFormat format, gint64 *cur)
' Queries an element for the stream position in nanoseconds.
Private Extern gst_element_query_position(gstelement As Pointer, gstformat As Pointer, cur As Pointer) As Boolean
' void gst_object_unref(gpointer object)
' Decrements the reference count on object.
Private Extern gst_object_unref(gobject As Pointer)
Public Sub Main()
Dim video As Pointer
Dim pos, dur As Long
Dim po, du As Date
gst_init(0, 0)
' Il percorso ed il nome del file origine .mp4 e quelli del file convertito .3gp NON devono contenere spazi !
video = gst_parse_launch("filesrc location=/percorso/del/file.mp4 ! qtdemux ! 3gppmux ! filesink location = /tmp/solovideo.3gp", 0)
' Avviamo la conversione video:
gst_element_set_state(video, GST_STATE_PLAYING)
Sleep 1
Do
gst_element_query_position(video, GST_FORMAT_TIME, VarPtr(pos))
gst_element_query_duration(video, GST_FORMAT_TIME, VarPtr(dur))
po = Date(0, 0, 0, 0, 0, 0, pos / 1000000)
du = Date(0, 0, 0, 0, 0, 0, dur / 1000000)
Write "\rTempo: " & po
Loop Until Str(po) >= Str(du)
Print "\nConversione terminata."
gst_object_unref(video)
End
e un file 3GP
solo audio:
Library "libgstreamer-1.0"
Private Enum GST_STATE_VOID_PENDING = 0, GST_STATE_NULL, GST_STATE_READY, GST_STATE_PAUSED, GST_STATE_PLAYING
Private Const GST_FORMAT_TIME As Integer = 3
' gst_init (int *argc, char **argv[])
' Initializes the GStreamer library, setting up internal path lists, registering built-in elements, and loading standard plugins.
Private Extern gst_init(argc As Pointer, argv As Pointer)
' GstElement * gst_parse_launch (const gchar *pipeline_description, GError **error)
' Create a new pipeline based on command line syntax.
Private Extern gst_parse_launch(description As String, GError As Pointer) As Pointer
' GstStateChangeReturn gst_element_set_state(GstElement *element, GstState state)
' Sets the state of the element.
Private Extern gst_element_set_state(gstelement As Pointer, state As Integer) As Integer
' gboolean gst_element_query_duration(GstElement *element, GstFormat format, gint64 *duration)
' Queries an element for the total stream duration in nanoseconds.
Private Extern gst_element_query_duration(gselement As Pointer, formatI As Integer, duration As Pointer) As Boolean
' gboolean gst_element_query_position (GstElement *element, GstFormat format, gint64 *cur)
' Queries an element for the stream position in nanoseconds.
Private Extern gst_element_query_position(gstelement As Pointer, gstformat As Pointer, cur As Pointer) As Boolean
' void gst_object_unref(gpointer object)
' Decrements the reference count on object.
Private Extern gst_object_unref(gobject As Pointer)
Public Sub Main()
Dim audio As Pointer
Dim pos, dur As Long
Dim po, du As Date
gst_init(0, 0)
' Il percorso ed il nome del file origine .mp4 e quelli del file convertito .3gp NON devono contenere spazi !
audio = gst_parse_launch("filesrc location=/percorso/del/file.mp4 ! qtdemux ! queue ! 3gppmux ! filesink location = /tmp/soloaudio.3gp", 0)
' Avviamo la conversione audio:
gst_element_set_state(audio, GST_STATE_PLAYING)
Sleep 1
Do
gst_element_query_position(audio, GST_FORMAT_TIME, VarPtr(pos))
gst_element_query_duration(audio, GST_FORMAT_TIME, VarPtr(dur))
po = Date(0, 0, 0, 0, 0, 0, pos / 1000000)
du = Date(0, 0, 0, 0, 0, 0, dur / 1000000)
Write "\rTempo: " & po
Loop Until Str(po) >= Str(du)
Print "\nConversione terminata."
gst_object_unref(audio)
End
