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mpegpsenc: fix user specified mux rate 

Fixes Ticket1175

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-07 07:56:11 +02:00
parent b717f35bfb
commit 3fb945a935
1 changed files with 5 additions and 2 deletions
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7
libavformat/mpegenc.c
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@ -65,6 +65,7 @@ typedef struct {
int pack_header_freq; /* frequency (in packets^-1) at which we send pack headers */
int system_header_freq;
int system_header_size;
int user_mux_rate; /* bitrate in units of bits/s */
int mux_rate; /* bitrate in units of 50 bytes/s */
/* stream info */
int audio_bound;
@ -423,7 +424,9 @@ static int mpeg_mux_init(AVFormatContext *ctx)
video_bitrate += codec_rate;
}
if (!s->mux_rate) {
if (s->user_mux_rate) {
s->mux_rate = (s->user_mux_rate + (8 * 50) - 1) / (8 * 50);
} else {
/* we increase slightly the bitrate to take into account the
headers. XXX: compute it exactly */
bitrate += bitrate / 20;
@ -1237,7 +1240,7 @@ static int mpeg_mux_end(AVFormatContext *ctx)
#define OFFSET(x) offsetof(MpegMuxContext, x)
#define E AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "muxrate", NULL, OFFSET(mux_rate), AV_OPT_TYPE_INT, {0}, 0, INT_MAX, E },
{ "muxrate", NULL, OFFSET(user_mux_rate), AV_OPT_TYPE_INT, {0}, 0, INT_MAX, E },
{ "preload", "Initial demux-decode delay in microseconds.", OFFSET(preload), AV_OPT_TYPE_INT, {500000}, 0, INT_MAX, E},
{ NULL },
};