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avconv: add symbolic names for -vsync parameters

This commit is contained in:
Anton Khirnov 2011-11-26 11:01:33 +01:00
parent 2df73eefb4
commit e8c04f6240
2 changed files with 27 additions and 11 deletions
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30
avconv.c
View File

@ -76,6 +76,11 @@
#include "libavutil/avassert.h"
#define VSYNC_AUTO -1
#define VSYNC_PASSTHROUGH 0
#define VSYNC_CFR 1
#define VSYNC_VFR 2
const char program_name[] = "avconv";
const int program_birth_year = 2000;
@ -111,7 +116,7 @@ static int do_hex_dump = 0;
static int do_pkt_dump = 0;
static int do_pass = 0;
static char *pass_logfilename_prefix = NULL;
static int video_sync_method = -1;
static int video_sync_method = VSYNC_AUTO;
static int audio_sync_method = 0;
static float audio_drift_threshold = 0.1;
static int copy_ts = 0;
@ -1330,16 +1335,16 @@ static void do_video_out(AVFormatContext *s,
*frame_size = 0;
format_video_sync = video_sync_method;
if (format_video_sync < 0)
format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 :
(s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
if (format_video_sync == VSYNC_AUTO)
format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
(s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
if (format_video_sync) {
if (format_video_sync != VSYNC_PASSTHROUGH) {
double vdelta = sync_ipts - ost->sync_opts;
// FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
if (vdelta < -1.1)
nb_frames = 0;
else if (format_video_sync == 2) {
else if (format_video_sync == VSYNC_VFR) {
if (vdelta <= -0.6) {
nb_frames = 0;
} else if (vdelta > 0.6)
@ -4309,6 +4314,17 @@ static int opt_video_filters(OptionsContext *o, const char *opt, const char *arg
return parse_option(o, "filter:v", arg, options);
}
static int opt_vsync(const char *opt, const char *arg)
{
if (!av_strcasecmp(arg, "cfr")) video_sync_method = VSYNC_CFR;
else if (!av_strcasecmp(arg, "vfr")) video_sync_method = VSYNC_VFR;
else if (!av_strcasecmp(arg, "passthrough")) video_sync_method = VSYNC_PASSTHROUGH;
if (video_sync_method == VSYNC_AUTO)
video_sync_method = parse_number_or_die("vsync", arg, OPT_INT, VSYNC_AUTO, VSYNC_VFR);
return 0;
}
#define OFFSET(x) offsetof(OptionsContext, x)
static const OptionDef options[] = {
/* main options */
@ -4339,7 +4355,7 @@ static const OptionDef options[] = {
"when dumping packets, also dump the payload" },
{ "re", OPT_BOOL | OPT_EXPERT | OPT_OFFSET, {.off = OFFSET(rate_emu)}, "read input at native frame rate", "" },
{ "target", HAS_ARG | OPT_FUNC2, {(void*)opt_target}, "specify target file type (\"vcd\", \"svcd\", \"dvd\", \"dv\", \"dv50\", \"pal-vcd\", \"ntsc-svcd\", ...)", "type" },
{ "vsync", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&video_sync_method}, "video sync method", "" },
{ "vsync", HAS_ARG | OPT_EXPERT, {(void*)opt_vsync}, "video sync method", "" },
{ "async", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&audio_sync_method}, "audio sync method", "" },
{ "adrift_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, {(void*)&audio_drift_threshold}, "audio drift threshold", "threshold" },
{ "copyts", OPT_BOOL | OPT_EXPERT, {(void*)&copy_ts}, "copy timestamps" },

8
doc/avconv.texi
View File

@ -746,15 +746,15 @@ Thread count.
Video sync method.
@table @option
@item 0
@item passthrough
Each frame is passed with its timestamp from the demuxer to the muxer.
@item 1
@item cfr
Frames will be duplicated and dropped to achieve exactly the requested
constant framerate.
@item 2
@item vfr
Frames are passed through with their timestamp or dropped so as to
prevent 2 frames from having the same timestamp.
@item -1
@item auto
Chooses between 1 and 2 depending on muxer capabilities. This is the
default method.
@end table