pass timestamps correctly for -sync 0

use zero sized frames in avi to handle duplicate frames

Originally committed as revision 3225 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffmpeg.c

@@ -618,7 +618,6 @@ static void do_video_out(AVFormatContext *s,
         else if (vdelta > 1.1)
             nb_frames = 2;
 //fprintf(stderr, "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;
             if (verbose>2)
@@ -628,7 +627,8 @@ static void do_video_out(AVFormatContext *s,
             if (verbose>2)
                 fprintf(stderr, "*** dup!\n");
         }
-    ost->sync_opts+= nb_frames;
+    }else
+        ost->sync_opts= lrintf(ost->sync_ipts * enc->frame_rate / enc->frame_rate_base);
 
     if (nb_frames <= 0) 
         return;
@@ -811,7 +811,9 @@ static void do_video_out(AVFormatContext *s,
                 big_picture.quality = ost->st->quality;
             if(!me_threshold)
                 big_picture.pict_type = 0;
-            big_picture.pts = AV_NOPTS_VALUE; //FIXME
+//            big_picture.pts = AV_NOPTS_VALUE;
+            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->frame_rate_base, enc->frame_rate);
+//av_log(NULL, AV_LOG_DEBUG, "%lld -> encoder\n", ost->sync_opts);
             ret = avcodec_encode_video(enc, 
                                        video_buffer, VIDEO_BUFFER_SIZE,
                                        &big_picture);
@@ -821,6 +823,10 @@ static void do_video_out(AVFormatContext *s,
                 pkt.size= ret;
                 if(enc->coded_frame)
                     pkt.pts= enc->coded_frame->pts;
+/*av_log(NULL, AV_LOG_DEBUG, "encoder -> %lld/%lld\n", 
+   pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->frame_rate, AV_TIME_BASE*(int64_t)enc->frame_rate_base) : -1,
+   pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->frame_rate, AV_TIME_BASE*(int64_t)enc->frame_rate_base) : -1);*/
+
                 if(enc->coded_frame && enc->coded_frame->key_frame)
                     pkt.flags |= PKT_FLAG_KEY;
                 av_interleaved_write_frame(s, &pkt);
@@ -834,6 +840,7 @@ static void do_video_out(AVFormatContext *s,
                 }
             }
         }
+        ost->sync_opts++;
         ost->frame_number++;
     }
  the_end:

libavformat/avienc.c

@@ -43,6 +43,7 @@ typedef struct {
     offset_t frames_hdr_all, frames_hdr_strm[MAX_STREAMS];
     int audio_strm_length[MAX_STREAMS];
     int riff_id;
+    int packet_count[MAX_STREAMS];
 
     AVIIndex indexes[MAX_STREAMS];
 } AVIContext;
@@ -382,6 +383,7 @@ static int avi_write_header(AVFormatContext *s)
             
             put_le32(pb, stream->frame_rate_base); /* scale */
             put_le32(pb, stream->frame_rate); /* rate */
+            av_set_pts_info(s->streams[i], 64, stream->frame_rate_base, stream->frame_rate);
 
             put_le32(pb, 0); /* start */
             avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
@@ -404,6 +406,7 @@ static int avi_write_header(AVFormatContext *s)
             parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
             put_le32(pb, au_scale); /* scale */
             put_le32(pb, au_byterate); /* rate */
+//            av_set_pts_info(&s->streams[i], 64, au_scale, au_byterate);
             put_le32(pb, 0); /* start */
             avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
             put_le32(pb, 0); /* length, XXX: filled later */
@@ -615,10 +618,23 @@ static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
     ByteIOContext *pb = &s->pb;
     unsigned char tag[5];
     unsigned int flags=0;
-    AVCodecContext *enc;
     const int stream_index= pkt->stream_index;
+    AVCodecContext *enc= &s->streams[stream_index]->codec;;
     int size= pkt->size;
 
+//    av_log(s, AV_LOG_DEBUG, "%lld %d %d\n", pkt->dts, avi->packet_count[stream_index], stream_index);
+    while(enc->codec_type == CODEC_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE && pkt->dts > avi->packet_count[stream_index]){
+        AVPacket empty_packet;
+
+        av_init_packet(&empty_packet);
+        empty_packet.size= 0;
+        empty_packet.data= NULL;
+        empty_packet.stream_index= stream_index;
+        avi_write_packet(s, &empty_packet);
+//        av_log(s, AV_LOG_DEBUG, "dup %lld %d\n", pkt->dts, avi->packet_count[stream_index]);
+    }
+    avi->packet_count[stream_index]++;
+
     if (url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE) { 
         avi_write_ix(s);
         end_tag(pb, avi->movi_list);
@@ -630,7 +646,6 @@ static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
 	avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");
     }
     
-    enc = &s->streams[stream_index]->codec;
     avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);
     if(pkt->flags&PKT_FLAG_KEY)
         flags = 0x10;