On Tue, 22 Mar 2022, [email protected] wrote:
From: Kevin Wang <[email protected]>
7-bit PictureIDs are not supported by WebRTC:
https://groups.google.com/g/discuss-webrtc/c/333-L02vuWA
In practice, 15-bit PictureIDs offer better compatibility.
Signed-off-by: Kevin Wang <[email protected]>
---
libavformat/rtpenc_vp8.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavformat/rtpenc_vp8.c b/libavformat/rtpenc_vp8.c
index 671d245758..655d44517e 100644
--- a/libavformat/rtpenc_vp8.c
+++ b/libavformat/rtpenc_vp8.c
@@ -35,7 +35,8 @@ void ff_rtp_send_vp8(AVFormatContext *s1, const uint8_t *buf,
int size)
// partition id 0
*s->buf_ptr++ = 0x90;
*s->buf_ptr++ = 0x80; // Picture id present
- *s->buf_ptr++ = s->frame_count++ & 0x7f;
+ *s->buf_ptr++ = ((s->frame_count & 0x7f00) >> 8) | 0x80;
+ *s->buf_ptr++ = s->frame_count++ & 0xff;
// Calculate the number of remaining bytes
header_size = s->buf_ptr - s->buf;
max_packet_size = s->max_payload_size - header_size;
--
2.34.1
LGTM, thanks!
// Martin
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