From: simock85 <[email protected]>
added -f option to declare the output format
---
libavformat/output-example.c | 22 +++++++++++++---------
1 files changed, 13 insertions(+), 9 deletions(-)
diff --git a/libavformat/output-example.c b/libavformat/output-example.c
index 6c604c2..dc588d3 100644
--- a/libavformat/output-example.c
+++ b/libavformat/output-example.c
@@ -442,15 +442,15 @@ static void close_video(AVFormatContext *oc, VideoOut
*out)
int main(int argc, char **argv)
{
const char *filename;
- AVOutputFormat *fmt;
+ AVOutputFormat *fmt = NULL;
AVFormatContext *oc;
AVStream *audio_st, *video_st;
double audio_pts, video_pts;
VideoOut *out;
AudioOut *aout;
int opt;
- float duration;
- int framerate;
+ float duration = STREAM_DURATION;
+ int framerate = STREAM_FRAME_RATE;
int tot_frames;
int i;
@@ -458,7 +458,7 @@ int main(int argc, char **argv)
av_register_all();
if (argc < 2) {
- printf("usage: %s [-d stream_duration] [-r frame_rate] output_file\n"
+ printf("usage: %s [-d stream_duration] [-r frame_rate] [-f format]
output_file\n"
"API example program to output a media file with libavformat.\n"
"The output format is automatically guessed according to the
file extension.\n"
"Raw images can also be output by using '%%d' in the filename\n"
@@ -466,14 +466,14 @@ int main(int argc, char **argv)
exit(1);
}
- duration = STREAM_DURATION;
- framerate = STREAM_FRAME_RATE;
-
- while ((opt = getopt(argc, argv, "d:r:")) != -1) {
+ while ((opt = getopt(argc, argv, "d:f:r:")) != -1) {
switch(opt) {
case 'd':
duration = atof(optarg);
break;
+ case 'f':
+ fmt = av_guess_format(optarg, NULL, NULL);
+ break;
case 'r':
framerate = atoi(optarg);
break;
@@ -485,7 +485,11 @@ int main(int argc, char **argv)
/* auto detect the output format from the name. default is
mpeg. */
- fmt = av_guess_format(NULL, filename, NULL);
+
+ if (!fmt) {
+ printf("Trying to deduce output format from file extension\n");
+ fmt = av_guess_format(NULL, filename, NULL);
+ }
if (!fmt) {
printf("Could not deduce output format from file extension: using
MPEG.\n");
fmt = av_guess_format("mpeg", NULL, NULL);
--
1.7.4.1
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