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Check if hcodec_id is set before using it. Occurs with e.g. RealVideo.
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@ -1,3 +1,8 @@
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2004-01-02 Moritz Bunkus <moritz@bunkus.org>
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* mkvmerge: bug fix: Segfault when muxing some video formats due
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to unchecked data (includes RealVideo).
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2004-01-01 Moritz Bunkus <moritz@bunkus.org>
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2004-01-01 Moritz Bunkus <moritz@bunkus.org>
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* Released v0.8.0.
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* Released v0.8.0.
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@ -73,7 +73,8 @@ void video_packetizer_c::set_headers() {
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!strncasecmp(fourcc, "XVID", 4) ||
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!strncasecmp(fourcc, "XVID", 4) ||
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!strncasecmp(fourcc, "DX5", 3))
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!strncasecmp(fourcc, "DX5", 3))
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is_mpeg4 = true;
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is_mpeg4 = true;
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} else if (!strncmp(hcodec_id, MKV_V_MPEG4_SP, strlen(MKV_V_MPEG4_SP) - 2))
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} else if ((hcodec_id != NULL) &&
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!strncmp(hcodec_id, MKV_V_MPEG4_SP, strlen(MKV_V_MPEG4_SP) - 2))
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is_mpeg4 = true;
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is_mpeg4 = true;
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if (codec_id != NULL)
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if (codec_id != NULL)
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@ -86,7 +87,7 @@ void video_packetizer_c::set_headers() {
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} else
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} else
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set_codec_id(MKV_V_MSCOMP);
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set_codec_id(MKV_V_MSCOMP);
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if ((!is_mpeg4 || !hack_engaged(ENGAGE_NATIVE_BFRAMES)) &&
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if ((!is_mpeg4 || !hack_engaged(ENGAGE_NATIVE_BFRAMES)) &&
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!strcmp(hcodec_id, MKV_V_MSCOMP) &&
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(hcodec_id != NULL) && !strcmp(hcodec_id, MKV_V_MSCOMP) &&
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(ti->private_data != NULL) &&
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(ti->private_data != NULL) &&
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(ti->private_size >= sizeof(alBITMAPINFOHEADER)) &&
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(ti->private_size >= sizeof(alBITMAPINFOHEADER)) &&
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(ti->fourcc[0] != 0))
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(ti->fourcc[0] != 0))
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