Hi all,
Following a Kdenlive's bug report, I reproducer a crash in
transition_mix when using a "consumer" producer is inserted in a
playlist, if that producer has a different fps than current project.
Problem is that in consumer_producer, we have that:
static int get_audio(...)
(...)
// if not repeating last frame
if ( mlt_frame_get_position( nested_frame ) != cx->audio_position )
{...}
else
{
// otherwise return no samples <-- this case seems to be
triggered when producer fps is different
*samples = 0;
*buffer = NULL;
}
Having a NULL audio frame buffer and 0 samples is not correctly handled
in transition_mix, leading to a crash in line 195:
memcpy( &self->dest_buffer[self->dest_buffer_count * channels_a],
buffer_a, bytes );
Crash can be fixed by changing consumer_producer.c, adding this at line 101:
*channels = 0;
It triggers a bypass in transisiton_mix.c, preventing the crash.
Would that be ok or should this better be fixed by changing transition_mix ?
Thanks
Jean-Baptiste
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