Commit af3b6af836 for ffmpeg

commit af3b6af836802507995717f182989d064244cb35
Author: James Almer <jamrial@gmail.com>
Date:   Thu Oct 29 15:26:51 2026 -0300

    avformat: add a raw LCEVC muxer

    Signed-off-by: James Almer <jamrial@gmail.com>

diff --git a/libavformat/Makefile b/libavformat/Makefile
index e012ce5ae6..e479c5c67c 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -360,6 +360,7 @@ OBJS-$(CONFIG_LATM_MUXER)                += latmenc.o rawenc.o
 OBJS-$(CONFIG_LC3_DEMUXER)               += lc3.o
 OBJS-$(CONFIG_LC3_MUXER)                 += lc3.o
 OBJS-$(CONFIG_LCEVC_DEMUXER)             += lcevcdec.o
+OBJS-$(CONFIG_LCEVC_MUXER)               += rawenc.o
 OBJS-$(CONFIG_LMLM4_DEMUXER)             += lmlm4.o
 OBJS-$(CONFIG_LOAS_DEMUXER)              += loasdec.o rawdec.o
 OBJS-$(CONFIG_LUODAT_DEMUXER)            += luodatdec.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index c18072c082..3306d71bf7 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -264,6 +264,7 @@ extern const FFOutputFormat ff_latm_muxer;
 extern const FFInputFormat  ff_lc3_demuxer;
 extern const FFOutputFormat ff_lc3_muxer;
 extern const FFInputFormat  ff_lcevc_demuxer;
+extern const FFOutputFormat ff_lcevc_muxer;
 extern const FFInputFormat  ff_lmlm4_demuxer;
 extern const FFInputFormat  ff_loas_demuxer;
 extern const FFInputFormat  ff_luodat_demuxer;
diff --git a/libavformat/rawenc.c b/libavformat/rawenc.c
index cf298d223d..40b6c2d40b 100644
--- a/libavformat/rawenc.c
+++ b/libavformat/rawenc.c
@@ -472,6 +472,31 @@ const FFOutputFormat ff_evc_muxer = {
 };
 #endif

+#if CONFIG_LCEVC_MUXER
+static int lcevc_check_bitstream(AVFormatContext *s, AVStream *st,
+                                const AVPacket *pkt)
+{
+    if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
+                          AV_RB24(pkt->data) != 0x000001)
+        return ff_stream_add_bitstream_filter(st, "lcevc_metadata", NULL);
+    return 1;
+}
+
+const FFOutputFormat ff_lcevc_muxer = {
+    .p.name            = "lcevc",
+    .p.long_name       = NULL_IF_CONFIG_SMALL("raw LCEVC video"),
+    .p.extensions      = "lcevc",
+    .p.audio_codec     = AV_CODEC_ID_NONE,
+    .p.video_codec     = AV_CODEC_ID_LCEVC,
+    .p.subtitle_codec  = AV_CODEC_ID_NONE,
+    .flags_internal    = FF_OFMT_FLAG_MAX_ONE_OF_EACH |
+                         FF_OFMT_FLAG_ONLY_DEFAULT_CODECS,
+    .write_packet      = ff_raw_write_packet,
+    .check_bitstream   = lcevc_check_bitstream,
+    .p.flags           = AVFMT_NOTIMESTAMPS,
+};
+#endif
+
 #if CONFIG_M4V_MUXER
 const FFOutputFormat ff_m4v_muxer = {
     .p.name            = "m4v",