lavf/mpeg: Do not detect unknown audio in Hikvision streams as alaw.

ee8c1838 · Carl Eugen Hoyos · 70c04335 · ee8c1838
Commit ee8c1838 authored May 17, 2015 by Carl Eugen Hoyos
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mpeg.c libavformat/mpeg.c +1 -1

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--- a/libavformat/mpeg.c
+++ b/libavformat/mpeg.c
@@ -550,7 +550,7 @@ redo:
            codec_id = AV_CODEC_ID_ADPCM_ADX;
            // Auto-detect AC-3
            request_probe = 50;
-        } else if (m->imkh_cctv && startcode == 0x1c0) {
+        } else if (m->imkh_cctv && startcode == 0x1c0 && len > 80) {
            codec_id = AV_CODEC_ID_PCM_ALAW;
            request_probe = 50;
        } else {