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lavf: Use av_codec_get_tag2() in avformat_query_codec().
av_codec_get_tag() can return 0 both in case of error and success.
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@ -4107,10 +4107,11 @@ int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
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int std_compliance)
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{
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if (ofmt) {
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unsigned int codec_tag;
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if (ofmt->query_codec)
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return ofmt->query_codec(codec_id, std_compliance);
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else if (ofmt->codec_tag)
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return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
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return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
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else if (codec_id == ofmt->video_codec ||
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codec_id == ofmt->audio_codec ||
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codec_id == ofmt->subtitle_codec)
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