This is an automated email from the git hooks/post-receive script. Git pushed a commit to branch master in repository ffmpeg. The following commit(s) were added to refs/heads/master by this push: new 69568479a9 avformat/rtpenc: use unsigned type for ssrc option 69568479a9 is described below commit 69568479a9dc737216165e751fc256e201d17732 Author: Neko Asakura <neko.asakura@outlook.com> AuthorDate: Fri Feb 20 20:24:08 2026 +0000 Commit: michaelni <michael@niedermayer.cc> CommitDate: Sat Feb 28 01:23:12 2026 +0000 avformat/rtpenc: use unsigned type for ssrc option The ssrc option used AV_OPT_TYPE_INT with range [INT_MIN, INT_MAX], but the underlying struct field is uint32_t and RFC 3550 defines SSRC as a 32-bit identifier covering the full [0, UINT32_MAX] range. This caused ffmpeg to reject any SSRC value above INT_MAX (~2.1 billion), which is roughly half of all valid values. The auto-generated fallback path (av_get_random_seed()) already returns uint32_t and can produce values above INT_MAX, creating an inconsistency where the automatic path succeeds but the explicit -ssrc option rejects the same value. Change the option to AV_OPT_TYPE_UINT with range [0, UINT32_MAX] to match the field type and allow the full identifier space. Fixes ticket #9080. Signed-off-by: Neko Asakura <neko.asakura@outlook.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavformat/rtpenc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/rtpenc.c b/libavformat/rtpenc.c index 3602b081d5..6d8e95f4c3 100644 --- a/libavformat/rtpenc.c +++ b/libavformat/rtpenc.c @@ -33,7 +33,7 @@ static const AVOption options[] = { FF_RTP_FLAG_OPTS(RTPMuxContext, flags), { "payload_type", "Specify RTP payload type", offsetof(RTPMuxContext, payload_type), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 127, AV_OPT_FLAG_ENCODING_PARAM }, - { "ssrc", "Stream identifier", offsetof(RTPMuxContext, ssrc), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, + { "ssrc", "Stream identifier", offsetof(RTPMuxContext, ssrc), AV_OPT_TYPE_UINT, { .i64 = 0 }, 0, UINT32_MAX, AV_OPT_FLAG_ENCODING_PARAM }, { "cname", "CNAME to include in RTCP SR packets", offsetof(RTPMuxContext, cname), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM }, { "seq", "Starting sequence number", offsetof(RTPMuxContext, seq), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 65535, AV_OPT_FLAG_ENCODING_PARAM }, { NULL },