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avconv: only set the "channels" option when it exists for the specified input format

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This allows the user to specify an input channel layout without avconv aborting because the
"channels" option was not found.
This commit is contained in:
Justin Ruggles 2012-04-16 12:51:24 -04:00
parent 6943fb47d3
commit b1041f8048
1 changed files with 10 additions and 2 deletions
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12
avconv.c
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@ -3627,8 +3627,16 @@ static int opt_input_file(OptionsContext *o, const char *opt, const char *filena
av_dict_set(&format_opts, "sample_rate", buf, 0);
}
if (o->nb_audio_channels) {
snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
av_dict_set(&format_opts, "channels", buf, 0);
/* because we set audio_channels based on both the "ac" and
* "channel_layout" options, we need to check that the specified
* demuxer actually has the "channels" option before setting it */
if (file_iformat && file_iformat->priv_class &&
av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
AV_OPT_SEARCH_FAKE_OBJ)) {
snprintf(buf, sizeof(buf), "%d",
o->audio_channels[o->nb_audio_channels - 1].u.i);
av_dict_set(&format_opts, "channels", buf, 0);
}
}
if (o->nb_frame_rates) {
av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);