Aid timestamp debugging. --- doc/examples/transcode.c | 43 +++++++++++++++++++++++++++++++--------- 1 file changed, 34 insertions(+), 9 deletions(-)
diff --git a/doc/examples/transcode.c b/doc/examples/transcode.c index 21ea14b614..5671c6664b 100644 --- a/doc/examples/transcode.c +++ b/doc/examples/transcode.c @@ -37,6 +37,7 @@ #include <libavutil/channel_layout.h> #include <libavutil/opt.h> #include <libavutil/pixdesc.h> +#include <libavutil/timestamp.h> static AVFormatContext *ifmt_ctx; static AVFormatContext *ofmt_ctx; @@ -435,6 +436,26 @@ static int init_filters(void) return 0; } +static void log_packet(AVPacket *pkt, const AVFormatContext *fmt_ctx, const char *tag) +{ + AVRational *time_base = &fmt_ctx->streams[pkt->stream_index]->time_base; + + av_log(NULL, AV_LOG_INFO, + "%s [pkt] stream:%d tb:%d/%d pts_time:%s\n", + tag, pkt->stream_index, time_base->num, time_base->den, + av_ts2timestr(pkt->pts, time_base)); +} + +static void log_frame(AVFrame *frame, int stream_index, const char *tag) +{ + AVRational *time_base = &frame->time_base; + + av_log(NULL, AV_LOG_INFO, + "%s [frame] stream:%d tb:%d/%d pts_time:%s\n", + tag, stream_index, time_base->num, time_base->den, + av_ts2timestr(frame->pts, time_base)); +} + static int encode_write_frame(unsigned int stream_index, int flush) { StreamContext *stream = &stream_ctx[stream_index]; @@ -443,16 +464,16 @@ static int encode_write_frame(unsigned int stream_index, int flush) AVPacket *enc_pkt = filter->enc_pkt; int ret; - av_log(NULL, AV_LOG_INFO, "Encoding frame\n"); /* encode filtered frame */ av_packet_unref(enc_pkt); - if (filt_frame && filt_frame->pts != AV_NOPTS_VALUE) + if (filt_frame && filt_frame->pts != AV_NOPTS_VALUE) { filt_frame->pts = av_rescale_q(filt_frame->pts, filt_frame->time_base, stream->enc_ctx->time_base); + log_frame(filt_frame, stream_index, "encoder <-"); + } ret = avcodec_send_frame(stream->enc_ctx, filt_frame); - if (ret < 0) return ret; @@ -468,8 +489,8 @@ static int encode_write_frame(unsigned int stream_index, int flush) stream->enc_ctx->time_base, ofmt_ctx->streams[stream_index]->time_base); - av_log(NULL, AV_LOG_DEBUG, "Muxing frame\n"); /* mux encoded frame */ + log_packet(enc_pkt, ofmt_ctx, "muxer <-"); ret = av_interleaved_write_frame(ofmt_ctx, enc_pkt); } @@ -481,8 +502,11 @@ static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index) FilteringContext *filter = &filter_ctx[stream_index]; int ret; - av_log(NULL, AV_LOG_INFO, "Pushing decoded frame to filters\n"); /* push the decoded frame into the filtergraph */ + if (frame) { + log_frame(frame, stream_index, "filters <-"); + } + ret = av_buffersrc_add_frame(filter->buffersrc_ctx, frame); if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Error while feeding the filtergraph\n"); @@ -491,7 +515,6 @@ static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index) /* pull filtered frames from the filtergraph */ while (1) { - av_log(NULL, AV_LOG_INFO, "Pulling filtered frame from filters\n"); ret = av_buffersink_get_frame(filter->buffersink_ctx, filter->filtered_frame); if (ret < 0) { /* if no more frames for output - returns AVERROR(EAGAIN) @@ -505,6 +528,8 @@ static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index) filter->filtered_frame->time_base = av_buffersink_get_time_base(filter->buffersink_ctx); filter->filtered_frame->pict_type = AV_PICTURE_TYPE_NONE; + + log_frame(filter->filtered_frame, stream_index, "filters ->"); ret = encode_write_frame(stream_index, 0); av_frame_unref(filter->filtered_frame); if (ret < 0) @@ -549,13 +574,11 @@ int main(int argc, char **argv) if ((ret = av_read_frame(ifmt_ctx, packet)) < 0) break; stream_index = packet->stream_index; - av_log(NULL, AV_LOG_DEBUG, "Demuxer gave frame of stream_index %u\n", stream_index); + log_packet(packet, ifmt_ctx, "demuxer ->"); if (filter_ctx[stream_index].filter_graph) { StreamContext *stream = &stream_ctx[stream_index]; - av_log(NULL, AV_LOG_DEBUG, "Going to reencode&filter the frame\n"); - ret = avcodec_send_packet(stream->dec_ctx, packet); if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Decoding failed\n"); @@ -569,6 +592,7 @@ int main(int argc, char **argv) else if (ret < 0) goto end; + log_frame(stream->dec_frame, stream_index, "decoder ->"); stream->dec_frame->pts = stream->dec_frame->best_effort_timestamp; ret = filter_encode_write_frame(stream->dec_frame, stream_index); if (ret < 0) @@ -580,6 +604,7 @@ int main(int argc, char **argv) ifmt_ctx->streams[stream_index]->time_base, ofmt_ctx->streams[stream_index]->time_base); + log_packet(packet, ofmt_ctx, "muxer <-"); ret = av_interleaved_write_frame(ofmt_ctx, packet); if (ret < 0) goto end; -- 2.34.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".