added real portable mode

playback/audio.cpp

@@ -319,6 +319,6 @@ void stop_recording() {
 	}
 }
 
-const QString& get_recorded_audio_filename() {
+QString get_recorded_audio_filename() {
 	return output_recording.fileName();
 }

playback/audio.h

@@ -48,7 +48,7 @@ int get_buffer_offset_from_frame(Sequence *s, long frame);
 
 bool start_recording();
 void stop_recording();
-const QString& get_recorded_audio_filename();
+QString get_recorded_audio_filename();
 extern bool recording;
 
 #endif // AUDIO_H

playback/playback.cpp

@@ -114,8 +114,7 @@ void get_clip_frame(Clip* c, long playhead) {
 		MediaStream* ms = static_cast<Media*>(c->media)->get_stream_from_file_index(c->track < 0, c->media_stream);
 
 		int64_t target_pts = playhead_to_timestamp(c, playhead);
-		int64_t second_pts = qRound64(av_q2d(av_inv_q(c->stream->time_base)));
-		int64_t quarter_pts = second_pts >> 2;
+        int64_t second_pts = qRound64(av_q2d(av_inv_q(c->stream->time_base)));
 		if (ms->video_interlacing != VIDEO_PROGRESSIVE) {
 			target_pts *= 2;
 			second_pts *= 2;