videolan/ffmpeg
1
Fork 0
mirror of https://git.videolan.org/git/ffmpeg.git synced 2024-09-01 14:06:45 +02:00
Code Releases Activity

lavf/mxfenc: simplify frame rate checks.

Browse Source
This commit is contained in:
Clément Bœsch 2012-08-03 10:21:24 +02:00 committed by Clément Bœsch
parent 82e5c5d45b
commit aad737c669
1 changed files with 12 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
libavformat/mxfenc.c
View File

@ -1683,26 +1683,28 @@ static int mxf_write_header(AVFormatContext *s)
}
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
AVRational rate;
AVRational rate, tbc = st->codec->time_base;
// Default component depth to 8
sc->component_depth = 8;
if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
switch (mxf->timecode_base) {
case 25:
samples_per_frame = PAL_samples_per_frame;
mxf->time_base = (AVRational){ 1, 25 };
mxf->timecode_base = 25;
} else if (fabs(av_q2d(st->codec->time_base) - 1/50.0) < 0.0001) {
break;
case 50:
samples_per_frame = PAL_50_samples_per_frame;
mxf->time_base = (AVRational){ 1, 50 };
mxf->timecode_base = 50;
} else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
break;
case 30:
samples_per_frame = NTSC_samples_per_frame;
mxf->time_base = (AVRational){ 1001, 30000 };
mxf->timecode_base = 30;
} else if (fabs(av_q2d(st->codec->time_base) - 1001/60000.0) < 0.0001) {
break;
case 60:
samples_per_frame = NTSC_60_samples_per_frame;
mxf->time_base = (AVRational){ 1001, 60000 };
mxf->timecode_base = 60;
} else {
break;
default:
av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
return -1;
}