Pion issues related to Galène

[jech]

• [ ] Slow ICE failures https://github.com/pion/ice/issues/271
• [x] ICE Agent can not be restarted when gathering https://github.com/pion/ice/issues/280
• [ ] Issues with TCP ICE https://github.com/pion/webrtc/issues/1356 and https://github.com/pion/ice/issues/245
• [ ] Issues with UDPMux https://github.com/pion/ice/issues/518 (see also https://github.com/pion/ice/issues/76)
• [ ] Pion chooses the wrong remote interface https://github.com/pion/ice/issues/305
• [ ] Writes are where we spend most CPU time https://github.com/pion/ice/issues/128
• [x] We're allocating encryption contexts like crazy https://github.com/pion/srtp/pull/76 and https://github.com/golang/go/issues/39365
• [x] We're allocating too many buffers https://github.com/pion/srtp/pull/197
• [x] The WebM files written to disk are incorrect https://github.com/at-wat/ebml-go/issues/134
• [ ] The TURN timeout is fixed at 2s https://github.com/pion/webrtc/issues/1635
• [ ] The built-in TURN server is too verbose https://github.com/pion/turn/issues/197
• [x] Infinite loop on failed negotation https://github.com/pion/webrtc/issues/1656
• [ ] Unable to use separate SSRCs for RTX and RED https://github.com/pion/webrtc/issues/1675 https://github.com/pion/webrtc/pull/2914 https://github.com/pion/webrtc/issues/2994 https://github.com/pion/webrtc/issues/2996
• [x] Stream ids get lost somewhere https://github.com/pion/webrtc/issues/1808
• [x] Race in Pion code https://github.com/pion/webrtc/issues/1803
• [x] Fix crash in samplebuilder.PopWithTimestamp https://github.com/pion/webrtc/pull/1838
• [x] Fix crash when a PC callback is reset https://github.com/pion/webrtc/pull/1872
• [x] Samplebuilder is broken in v3.0.31 https://github.com/pion/webrtc/issues/1839
• [ ] The AV1 parser is inefficient https://github.com/pion/rtp/pull/265 https://github.com/pion/rtp/pull/266
• [ ] The current samplebuilder is unsuitable for H264, AV1 and other codecs with non-trivial packetisation rules https://github.com/pion/rtp/pull/264