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webrtc: fix packet corruption when reading G711 (#5048)

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when a reader is reading a G711 track, stream units are modified
globally, affecting every other reader. This fixes the issue.
This commit is contained in:
Alessandro Ros
2025-09-30 10:42:24 +02:00
committed by GitHub
parent 2690ef8e71
commit 691d7290fb
1 changed files with 13 additions and 2 deletions
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15
internal/protocols/webrtc/from_stream.go
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@@ -19,6 +19,7 @@ import (
"github.com/bluenviron/mediamtx/internal/logger"
"github.com/bluenviron/mediamtx/internal/stream"
"github.com/bluenviron/mediamtx/internal/unit"
"github.com/pion/rtp"
"github.com/pion/webrtc/v4"
)
@@ -377,7 +378,12 @@ func setupAudioTrack(
media,
opusFormat,
func(u unit.Unit) error {
for _, pkt := range u.GetRTPPackets() {
for _, orig := range u.GetRTPPackets() {
pkt := &rtp.Packet{
Header: orig.Header,
Payload: orig.Payload,
}
// recompute timestamp from scratch.
// Chrome requires a precise timestamp that FFmpeg doesn't provide.
pkt.Timestamp = curTimestamp
@@ -488,7 +494,12 @@ func setupAudioTrack(
media,
g711Format,
func(u unit.Unit) error {
for _, pkt := range u.GetRTPPackets() {
for _, orig := range u.GetRTPPackets() {
pkt := &rtp.Packet{
Header: orig.Header,
Payload: orig.Payload,
}
// recompute timestamp from scratch.
// Chrome requires a precise timestamp that FFmpeg doesn't provide.
pkt.Timestamp = curTimestamp