[FFmpeg-devel] [PATCH] libavformat/mpeg.c: add support for AAC LATM

Scott Theisen scott.the.elm at gmail.com
Thu Nov 14 07:15:51 EET 2024


ISO/IEC 13818-1:2021 Table 2-34 – Stream type assignments
defines 0x11 as ISO/IEC 14496-3 Audio with the LATM transport syntax as defined
in ISO/IEC 14496-3.  This table applies to both Transport Streams and Program
Streams.
---
 libavformat/mpeg.c | 3 +++
 libavformat/mpeg.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/libavformat/mpeg.c b/libavformat/mpeg.c
index 2c766a4ee9..57562c1ee6 100644
--- a/libavformat/mpeg.c
+++ b/libavformat/mpeg.c
@@ -541,6 +541,9 @@ redo:
     } else if (es_type == STREAM_TYPE_AUDIO_AAC) {
         codec_id = AV_CODEC_ID_AAC;
         type     = AVMEDIA_TYPE_AUDIO;
+    } else if (es_type == STREAM_TYPE_AUDIO_AAC_LATM) {
+        codec_id = AV_CODEC_ID_AAC_LATM;
+        type     = AVMEDIA_TYPE_AUDIO;
     } else if (es_type == STREAM_TYPE_VIDEO_MPEG4) {
         codec_id = AV_CODEC_ID_MPEG4;
         type     = AVMEDIA_TYPE_VIDEO;
diff --git a/libavformat/mpeg.h b/libavformat/mpeg.h
index 20592eb184..341cf3902c 100644
--- a/libavformat/mpeg.h
+++ b/libavformat/mpeg.h
@@ -54,6 +54,7 @@
 #define STREAM_TYPE_PRIVATE_DATA    0x06
 #define STREAM_TYPE_AUDIO_AAC       0x0f
 #define STREAM_TYPE_VIDEO_MPEG4     0x10
+#define STREAM_TYPE_AUDIO_AAC_LATM  0x11
 #define STREAM_TYPE_VIDEO_H264      0x1b
 #define STREAM_TYPE_VIDEO_HEVC      0x24
 #define STREAM_TYPE_VIDEO_VVC       0x33
-- 
2.43.0



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