user specified start time offset

frame dup/drop info
typos
patch by (Wolfram Gloger <wmglo at dent dot med dot uni-muenchen dot de>)

Originally committed as revision 3217 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffmpeg.c

@@ -58,6 +58,7 @@ static void show_license(void);
 #define MAX_FILES 20
 
 static AVFormatContext *input_files[MAX_FILES];
+static int64_t input_files_ts_offset[MAX_FILES];
 static int nb_input_files = 0;
 
 static AVFormatContext *output_files[MAX_FILES];
@@ -184,6 +185,7 @@ static int audio_codec_id = CODEC_ID_NONE;
 static int64_t recording_time = 0;
 static int64_t start_time = 0;
 static int64_t rec_timestamp = 0;
+static int64_t input_ts_offset = 0;
 static int file_overwrite = 0;
 static char *str_title = NULL;
 static char *str_author = NULL;
@@ -220,6 +222,8 @@ static int me_range = 0;
 static int64_t video_size = 0;
 static int64_t audio_size = 0;
 static int64_t extra_size = 0;
+static int nb_frames_dup = 0;
+static int nb_frames_drop = 0;
 
 #define DEFAULT_PASS_LOGFILENAME "ffmpeg2pass"
 
@@ -614,6 +618,12 @@ static void do_video_out(AVFormatContext *s,
             nb_frames = 2;
 //printf("vdelta:%f, ost->sync_opts:%lld, ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, ost->sync_ipts, nb_frames);
     }
+    if (nb_frames == 0)
+        ++nb_frames_drop;
+    else if (nb_frames == 2) {
+        ++nb_frames_dup;
+	//printf("*** dup!\n");
+    }
     ost->sync_opts+= nb_frames;
 
     if (nb_frames <= 0) 
@@ -964,6 +974,10 @@ static void print_report(AVFormatContext **output_files,
         sprintf(buf + strlen(buf), 
             "size=%8.0fkB time=%0.1f bitrate=%6.1fkbits/s",
             (double)total_size / 1024, ti1, bitrate);
+
+	if (verbose > 1)
+	  sprintf(buf + strlen(buf), " dup=%d drop=%d",
+		  nb_frames_dup, nb_frames_drop);
         
         if (verbose >= 0)
             fprintf(stderr, "%s    \r", buf);
@@ -1116,7 +1130,7 @@ static int output_packet(AVInputStream *ist, int ist_index,
                                ((double)ost->st->pts.val * ost->time_base.num / ost->time_base.den));
 #endif
                         /* set the input output pts pairs */
-                        ost->sync_ipts = (double)ist->pts / AV_TIME_BASE;
+                        ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index])/ AV_TIME_BASE;
 
                         if (ost->encoding_needed) {
                             switch(ost->st->codec.codec_type) {
@@ -1167,8 +1181,8 @@ static int output_packet(AVInputStream *ist, int ist_index,
                             opkt.stream_index= ost->index;
                             opkt.data= data_buf;
                             opkt.size= data_size;
-                            opkt.pts= pkt->pts; //FIXME ist->pts?
-                            opkt.dts= pkt->dts;
+                            opkt.pts= pkt->pts + input_files_ts_offset[ist->file_index];
+                            opkt.dts= pkt->dts + input_files_ts_offset[ist->file_index];
                             opkt.flags= pkt->flags;
                             
                             av_interleaved_write_frame(os, &opkt);
@@ -2522,6 +2536,11 @@ static void opt_rec_timestamp(const char *arg)
     rec_timestamp = parse_date(arg, 0) / 1000000;
 }
 
+static void opt_input_ts_offset(const char *arg)
+{
+    input_ts_offset = parse_date(arg, 1);
+}
+
 static void opt_input_file(const char *filename)
 {
     AVFormatContext *ic;
@@ -2632,6 +2651,9 @@ static void opt_input_file(const char *filename)
     }
     
     input_files[nb_input_files] = ic;
+    input_files_ts_offset[nb_input_files] = input_ts_offset;
+    if (ic->start_time != AV_NOPTS_VALUE && 0)
+	input_files_ts_offset[nb_input_files] -= ic->start_time;
     /* dump the file content */
     if (verbose >= 0)
         dump_format(ic, nb_input_files, filename, 0);
@@ -3501,6 +3523,7 @@ const OptionDef options[] = {
     { "map", HAS_ARG | OPT_EXPERT, {(void*)opt_map}, "set input stream mapping", "file:stream" },
     { "t", HAS_ARG, {(void*)opt_recording_time}, "set the recording time", "duration" },
     { "ss", HAS_ARG, {(void*)opt_start_time}, "set the start time offset", "time_off" },
+    { "itsoffset", HAS_ARG, {(void*)opt_input_ts_offset}, "set the input ts offset", "time_off" },
     { "title", HAS_ARG | OPT_STRING, {(void*)&str_title}, "set the title", "string" },
     { "timestamp", HAS_ARG, {(void*)&opt_rec_timestamp}, "set the timestamp", "time" },
     { "author", HAS_ARG | OPT_STRING, {(void*)&str_author}, "set the author", "string" },

libavformat/utils.c

@@ -1009,7 +1009,7 @@ int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts
             pos_min= e->pos;
             ts_min= e->timestamp;
 #ifdef DEBUG_SEEK
-        av_log(s, AV_LOG_DEBUG, "unsing cached pos_min=0x%llx dts_min=%lld\n", 
+        av_log(s, AV_LOG_DEBUG, "using cached pos_min=0x%llx dts_min=%lld\n", 
                pos_min,ts_min);
 #endif
         }else{
@@ -1023,7 +1023,7 @@ int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts
             ts_max= e->timestamp;
             pos_limit= pos_max - e->min_distance;
 #ifdef DEBUG_SEEK
-        av_log(s, AV_LOG_DEBUG, "unsing cached pos_max=0x%llx pos_limit=0x%llx dts_max=%lld\n", 
+        av_log(s, AV_LOG_DEBUG, "using cached pos_max=0x%llx pos_limit=0x%llx dts_max=%lld\n", 
                pos_max,pos_limit, ts_max);
 #endif
         }
@@ -2229,6 +2229,7 @@ int64_t parse_date(const char *datestr, int duration)
     const char *q;
     int is_utc, len;
     char lastch;
+    int negative = 0;
 
 #undef time
     time_t now = time(0);
@@ -2273,6 +2274,10 @@ int64_t parse_date(const char *datestr, int duration)
             }
         }
     } else {
+	if (p[0] == '-') {
+	    negative = 1;
+	    ++p;
+	}
         q = small_strptime(p, time_fmt[0], &dt);
         if (!q) {
             dt.tm_sec = strtol(p, (char **)&q, 10);
@@ -2312,7 +2317,7 @@ int64_t parse_date(const char *datestr, int duration)
         }
         t += val;
     }
-    return t;
+    return negative ? -t : t;
 }
 
 /* syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done. Return