return ret;
}
+int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
+{
+ int i, j;
+ int64_t last = st->info->last_dts;
+
+ if( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
+ && ts - (uint64_t)last < INT64_MAX){
+ double dts= (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
+ int64_t duration= ts - last;
+
+ if (!st->info->duration_error)
+ st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
+ if (!st->info->duration_error)
+ return AVERROR(ENOMEM);
+
+// if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
+// av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
+ for (i=0; i<MAX_STD_TIMEBASES; i++) {
+ if (st->info->duration_error[0][1][i] < 1e10) {
+ int framerate= get_std_framerate(i);
+ double sdts= dts*framerate/(1001*12);
+ for(j=0; j<2; j++){
+ int64_t ticks= llrint(sdts+j*0.5);
+ double error= sdts - ticks + j*0.5;
+ st->info->duration_error[j][0][i] += error;
+ st->info->duration_error[j][1][i] += error*error;
+ }
+ }
+ }
+ st->info->duration_count++;
+
+ if (st->info->duration_count % 10 == 0) {
+ int n = st->info->duration_count;
+ for (i=0; i<MAX_STD_TIMEBASES; i++) {
+ if (st->info->duration_error[0][1][i] < 1e10) {
+ double a0 = st->info->duration_error[0][0][i] / n;
+ double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
+ double a1 = st->info->duration_error[1][0][i] / n;
+ double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
+ if (error0 > 0.04 && error1 > 0.04) {
+ st->info->duration_error[0][1][i] = 2e10;
+ st->info->duration_error[1][1][i] = 2e10;
+ }
+ }
+ }
+ }
+
+ // ignore the first 4 values, they might have some random jitter
+ if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
+ st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
+ }
+ if (ts != AV_NOPTS_VALUE)
+ st->info->last_dts = ts;
+
+ return 0;
+}
+
+void ff_rfps_calculate(AVFormatContext *ic)
+{
+ int i, j;
+
+ for (i = 0; i<ic->nb_streams; i++) {
+ AVStream *st = ic->streams[i];
+
+ if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO)
+ continue;
+ // the check for tb_unreliable() is not completely correct, since this is not about handling
+ // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
+ // ipmovie.c produces.
+ if (tb_unreliable(st->codec) && st->info->duration_count > 15 && st->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num)
+ av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->info->duration_gcd, INT_MAX);
+ if (st->info->duration_count>1 && !st->r_frame_rate.num
+ && tb_unreliable(st->codec)) {
+ int num = 0;
+ double best_error= 0.01;
+
+ for (j=0; j<MAX_STD_TIMEBASES; j++) {
+ int k;
+
+ if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
+ continue;
+ if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
+ continue;
+ for(k=0; k<2; k++){
+ int n= st->info->duration_count;
+ double a= st->info->duration_error[k][0][j] / n;
+ double error= st->info->duration_error[k][1][j]/n - a*a;
+
+ if(error < best_error && best_error> 0.000000001){
+ best_error= error;
+ num = get_std_framerate(j);
+ }
+ if(error < 0.02)
+ av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
+ }
+ }
+ // do not increase frame rate by more than 1 % in order to match a standard rate.
+ if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
+ av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
+ }
+
+ av_freep(&st->info->duration_error);
+ st->info->last_dts = AV_NOPTS_VALUE;
+ st->info->duration_count = 0;
+ }
+}
+
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
{
int i, count, ret = 0, j;
int flush_codecs = ic->probesize > 0;
if(ic->pb)
- av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
+ av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d\n",
+ avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count);
for(i=0;i<ic->nb_streams;i++) {
const AVCodec *codec;
}
}
#if FF_API_R_FRAME_RATE
- {
- int64_t last = st->info->last_dts;
-
- if( pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last
- && pkt->dts - (uint64_t)last < INT64_MAX){
- double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
- int64_t duration= pkt->dts - last;
-
- if (!st->info->duration_error)
- st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
- if (!st->info->duration_error)
- return AVERROR(ENOMEM);
-
-// if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
-// av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
- for (i=0; i<MAX_STD_TIMEBASES; i++) {
- int framerate= get_std_framerate(i);
- double sdts= dts*framerate/(1001*12);
- for(j=0; j<2; j++){
- int64_t ticks= llrint(sdts+j*0.5);
- double error= sdts - ticks + j*0.5;
- st->info->duration_error[j][0][i] += error;
- st->info->duration_error[j][1][i] += error*error;
- }
- }
- st->info->duration_count++;
- // ignore the first 4 values, they might have some random jitter
- if (st->info->duration_count > 3 && is_relative(pkt->dts) == is_relative(last))
- st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
- }
- if (pkt->dts != AV_NOPTS_VALUE)
- st->info->last_dts = pkt->dts;
- }
+ ff_rfps_add_frame(ic, st, pkt->dts);
#endif
if(st->parser && st->parser->parser->split && !st->codec->extradata){
int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
st = ic->streams[i];
avcodec_close(st->codec);
}
+
+ ff_rfps_calculate(ic);
+
for(i=0;i<ic->nb_streams;i++) {
st = ic->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
best_fps, 12*1001, INT_MAX);
}
}
- // the check for tb_unreliable() is not completely correct, since this is not about handling
- // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
- // ipmovie.c produces.
- if (tb_unreliable(st->codec) && st->info->duration_count > 15 && st->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num)
- av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->info->duration_gcd, INT_MAX);
- if (st->info->duration_count>1 && !st->r_frame_rate.num
- && tb_unreliable(st->codec)) {
- int num = 0;
- double best_error= 0.01;
-
- for (j=0; j<MAX_STD_TIMEBASES; j++) {
- int k;
-
- if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
- continue;
- if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
- continue;
- for(k=0; k<2; k++){
- int n= st->info->duration_count;
- double a= st->info->duration_error[k][0][j] / n;
- double error= st->info->duration_error[k][1][j]/n - a*a;
-
- if(error < best_error && best_error> 0.000000001){
- best_error= error;
- num = get_std_framerate(j);
- }
- if(error < 0.02)
- av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
- }
- }
- // do not increase frame rate by more than 1 % in order to match a standard rate.
- if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
- av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
- }
if (!st->r_frame_rate.num){
if( st->codec->time_base.den * (int64_t)st->time_base.num
av_freep(&ic->streams[i]->info);
}
if(ic->pb)
- av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
+ av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
+ avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
return ret;
}
projects / ffmpeg / blobdiff