mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-25 01:30:38 +00:00
Code Issues 1 Projects Releases Wiki Activity

avidemux: check video stream framerate against avi header frame duration

Browse source 
The former might be bogus in silly cases, and the latter seems to
carry more weight.
This commit is contained in:
Mark Nauwelaerts 2009-07-29 15:25:38 +02:00
parent 3863871100
commit f4f8e8532c
1 changed files with 18 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
gst/avi/gstavidemux.c
View file

@ -1502,8 +1502,25 @@ gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
goto fail;
}
/* determine duration as indicated by header */
strh = stream->strh;
/* sanity check; stream header frame rate matches global header
* frame duration */
if (stream->strh->type == GST_RIFF_FCC_vids) {
GstClockTime s_dur;
GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
"frame duration = %d ms", strh->rate, strh->scale,
s_dur / GST_MSECOND);
if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
strh->rate = GST_SECOND / GST_USECOND;
strh->scale = h_dur / GST_USECOND;
GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
strh->rate, strh->scale);
}
}
/* determine duration as indicated by header */
stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
strh->scale, GST_SECOND, (guint64) strh->rate);
GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,