examples: do not use AVFrame accessor

Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

doc/examples/filtering_audio.c

@@ -201,7 +201,7 @@ end:
 
 static void print_frame(const AVFrame *frame)
 {
-    const int n = frame->nb_samples * av_get_channel_layout_nb_channels(av_frame_get_channel_layout(frame));
+    const int n = frame->nb_samples * av_get_channel_layout_nb_channels(frame->channel_layout);
     const uint16_t *p     = (uint16_t*)frame->data[0];
     const uint16_t *p_end = p + n;
 

doc/examples/filtering_video.c

@@ -253,7 +253,7 @@ int main(int argc, char **argv)
                 }
 
                 if (ret >= 0) {
-                    frame->pts = av_frame_get_best_effort_timestamp(frame);
+                    frame->pts = frame->best_effort_timestamp;
 
                     /* push the decoded frame into the filtergraph */
                     if (av_buffersrc_add_frame_flags(buffersrc_ctx, frame, AV_BUFFERSRC_FLAG_KEEP_REF) < 0) {

doc/examples/transcoding.c

@@ -558,7 +558,7 @@ int main(int argc, char **argv)
             }
 
             if (got_frame) {
-                frame->pts = av_frame_get_best_effort_timestamp(frame);
+                frame->pts = frame->best_effort_timestamp;
                 ret = filter_encode_write_frame(frame, stream_index);
                 av_frame_free(&frame);
                 if (ret < 0)