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flv: Workaround for buggy Omnia A/XE encoder

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The Omnia A/XE encoder writes the explicit extra data incorrectly
and wrongly disables parametric stereo. Truncating the extra data
by setting the size to 2 works around this. The AAC extra data
parser will then only parse the correct parts.

Bug-id: 599
This commit is contained in:
Benjamin Larsson 2014-01-05 14:42:14 +01:00 committed by Anton Khirnov
parent 44a0a98f92
commit 547f834537
1 changed files with 6 additions and 0 deletions
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6
libavformat/flvdec.c
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@ -915,6 +915,12 @@ skip:
return ret;
if (st->codec->codec_id == AV_CODEC_ID_AAC) {
MPEG4AudioConfig cfg;
/* Workaround for buggy Omnia A/XE encoder */
AVDictionaryEntry *t = av_dict_get(s->metadata, "Encoder", NULL, 0);
if (t && !strcmp(t->value, "Omnia A/XE"))
st->codec->extradata_size = 2;
avpriv_mpeg4audio_get_config(&cfg, st->codec->extradata,
st->codec->extradata_size * 8, 1);
st->codec->channels = cfg.channels;