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output_example: use avformat_alloc_output_context() 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-04-30 20:44:09 +02:00
parent 7d727f1338
commit ce62b35c31
1 changed files with 6 additions and 23 deletions
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29
libavformat/output-example.c
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@ -442,26 +442,16 @@ int main(int argc, char **argv)
filename = argv[1]; filename = argv[1];
/* auto detect the output format from the name. default is
mpeg. */
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);
}
if (!fmt) {
fprintf(stderr, "Could not find suitable output format\n");
exit(1);
}
/* allocate the output media context */ /* allocate the output media context */
oc = avformat_alloc_context(); oc = avformat_alloc_output_context(NULL, NULL, filename);
if (!oc) {
printf("Could not deduce output format from file extension: using MPEG.\n");
oc = avformat_alloc_output_context("mpeg", NULL, filename);
}
if (!oc) { if (!oc) {
fprintf(stderr, "Memory error\n");
exit(1); exit(1);
} }
oc->oformat = fmt; fmt= oc->oformat;
snprintf(oc->filename, sizeof(oc->filename), "%s", filename);
/* add the audio and video streams using the default format codecs /* add the audio and video streams using the default format codecs
and initialize the codecs */ and initialize the codecs */
@ -474,13 +464,6 @@ int main(int argc, char **argv)
audio_st = add_audio_stream(oc, fmt->audio_codec); audio_st = add_audio_stream(oc, fmt->audio_codec);
} }
/* set the output parameters (must be done even if no
parameters). */
if (av_set_parameters(oc, NULL) < 0) {
fprintf(stderr, "Invalid output format parameters\n");
exit(1);
}
av_dump_format(oc, 0, filename, 1); av_dump_format(oc, 0, filename, 1);
/* now that all the parameters are set, we can open the audio and /* now that all the parameters are set, we can open the audio and