xenia-project/FFmpeg
1
0
Fork 0
mirror of https://github.com/xenia-project/FFmpeg.git synced 2024-11-24 12:09:55 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ffmpeg: Implement support for seeking relative to EOF

Browse Source 
Fixes Ticket227

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-07-27 04:30:26 +02:00
parent 902bfa5b22
commit f4ada6dc3f
3 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
doc/ffmpeg.texi
View File

@ -307,6 +307,11 @@ input until the timestamps reach @var{position}.
@var{position} may be either in seconds or in @code{hh:mm:ss[.xxx]} form.
@item -sseof @var{position} (@emph{input/output})
Like the -ss option but relative to the "end of file". That is negative
values are earlier in the file, 0 is at EOF.
@item -itsoffset @var{offset} (@emph{input})
Set the input time offset.

1
ffmpeg.h
View File

@ -92,6 +92,7 @@ typedef struct OptionsContext {
/* input/output options */
int64_t start_time;
int64_t start_time_eof;
int seek_timestamp;
const char *format;

6
ffmpeg_opt.c
View File

@ -156,6 +156,7 @@ static void init_options(OptionsContext *o)
o->stop_time = INT64_MAX;
o->mux_max_delay = 0.7;
o->start_time = AV_NOPTS_VALUE;
o->start_time_eof = AV_NOPTS_VALUE;
o->recording_time = INT64_MAX;
o->limit_filesize = UINT64_MAX;
o->chapters_input_file = INT_MAX;
@ -933,6 +934,8 @@ static int open_input_file(OptionsContext *o, const char *filename)
}
}
if (o->start_time_eof != AV_NOPTS_VALUE && ic->duration>0)
o->start_time = o->start_time_eof + ic->duration;
timestamp = (o->start_time == AV_NOPTS_VALUE) ? 0 : o->start_time;
/* add the stream start time */
if (!o->seek_timestamp && ic->start_time != AV_NOPTS_VALUE)
@ -3019,6 +3022,9 @@ const OptionDef options[] = {
{ "ss", HAS_ARG | OPT_TIME | OPT_OFFSET |
OPT_INPUT | OPT_OUTPUT, { .off = OFFSET(start_time) },
"set the start time offset", "time_off" },
{ "sseof", HAS_ARG | OPT_TIME | OPT_OFFSET |
OPT_INPUT | OPT_OUTPUT, { .off = OFFSET(start_time_eof) },
"set the start time offset relative to EOF", "time_off" },
{ "seek_timestamp", HAS_ARG | OPT_INT | OPT_OFFSET |
OPT_INPUT, { .off = OFFSET(seek_timestamp) },
"enable/disable seeking by timestamp with -ss" },