generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

fix nonsens timestamp calculation

Browse Source 
Originally committed as revision 4165 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2005-04-26 10:01:17 +00:00
parent 8cf71eadd2
commit caf5fb95ae
1 changed files with 5 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
libavformat/4xm.c
View File

@ -72,7 +72,6 @@ typedef struct FourxmDemuxContext {
int64_t audio_pts;
int64_t video_pts;
int video_pts_inc;
float fps;
} FourxmDemuxContext;
@ -149,7 +148,6 @@ static int fourxm_read_header(AVFormatContext *s,
if (fourcc_tag == std__TAG) {
fourxm->fps = get_le_float(&header[i + 12]);
fourxm->video_pts_inc = (int)(90000.0 / fourxm->fps);
} else if (fourcc_tag == vtrk_TAG) {
/* check that there is enough data */
if (size != vtrk_SIZE) {
@ -164,7 +162,7 @@ static int fourxm_read_header(AVFormatContext *s,
st = av_new_stream(s, 0);
if (!st)
return AVERROR_NOMEM;
av_set_pts_info(st, 33, 1, 90000);
av_set_pts_info(st, 60, 1, fourxm->fps);
fourxm->video_stream_index = st->index;
@ -205,8 +203,7 @@ static int fourxm_read_header(AVFormatContext *s,
if (!st)
return AVERROR_NOMEM;
/* set the pts reference (1 pts = 1/90000) */
av_set_pts_info(st, 33, 1, 90000);
av_set_pts_info(st, 60, 1, fourxm->tracks[current_track].sample_rate);
fourxm->tracks[current_track].stream_index = st->index;
@ -235,7 +232,7 @@ static int fourxm_read_header(AVFormatContext *s,
return AVERROR_INVALIDDATA;
/* initialize context members */
fourxm->video_pts = -fourxm->video_pts_inc; /* first frame will push to 0 */
fourxm->video_pts = -1; /* first frame will push to 0 */
fourxm->audio_pts = 0;
return 0;
@ -252,7 +249,6 @@ static int fourxm_read_packet(AVFormatContext *s,
int track_number;
int packet_read = 0;
unsigned char header[8];
int64_t pts_inc;
int audio_frame_count;
while (!packet_read) {
@ -267,7 +263,7 @@ static int fourxm_read_packet(AVFormatContext *s,
case LIST_TAG:
/* this is a good time to bump the video pts */
fourxm->video_pts += fourxm->video_pts_inc;
fourxm->video_pts ++;
/* skip the LIST-* tag and move on to the next fourcc */
get_le32(pb);
@ -322,10 +318,7 @@ static int fourxm_read_packet(AVFormatContext *s,
else
audio_frame_count /=
(fourxm->tracks[fourxm->selected_track].bits / 8);
pts_inc = audio_frame_count;
pts_inc *= 90000;
pts_inc /= fourxm->tracks[fourxm->selected_track].sample_rate;
fourxm->audio_pts += pts_inc;
fourxm->audio_pts += audio_frame_count;
} else {
url_fseek(pb, size, SEEK_CUR);