Media/openh264

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OpenH264 is a codec library that has been is used since Desktop Firefox version 33 to help enable real-time communication technologies, like WebRTC, especially in situations where the WebRTC connection may be gatewayed to devices that support H.264 but not VP8. It is also used when talking to some FxOS devices that are using hardware H.264 codecs to reduce CPU load.

OpenH264 is not packaged with Firefox; it is downloaded and updated from Cisco's servers automatically. It can be disabled from the Addon's page.

With a few specific exceptions (certain Linux systems that don't support sandboxing), OpenH264 is sandboxed for security reasons, and it always runs in a separate process.

Project Status Updates

  • In Firefox 33
    • OpenH264 is for WebRTC only for the time being. Streaming video decode typically requires H.264 profiles not included yet in OpenH264 and also audio codecs that are not freely available.
      • which means: it doesn't enable playing back MP4 videos at this time
      • it will enable real-time communication from the FxOS phone using the WebRTC and the Hardware H.264 codec to OpenH264 on the browser.
    • We have sand-boxing turned on with OpenH264 (except for some Linux variants)
  • Android is not yet supported

OpenH264 support for WebRTC (desktop)

  • Bug 948160 tracks continuing development for OpenH264.
Full Query
ID Summary Target milestone Status Assigned to Resolution Depends on Blocks Whiteboard Feature b2g Priority
985255 Breakdown: Implement OpenH264 download --- VERIFIED Benjamin Smedberg FIXED 1037767, 1039490, 1039555, 1007694, 1009760, 1009764, 1009765, 1009816, 1009909, 1013345, 1013354, 1013359, 1035854, 1039839, 1040060 948160 p=8 s=it-32c-31a-30b.3 [qa-] --- --
1007694 [UX] Decide how to expose the option to disable openh264 Firefox 32 VERIFIED (Currently slow to respond) Philipp Sackl [:phlsa] (Firefox UX) please use needinfo FIXED 948160, 985255, 1009909 [ux] p=2 s=it-32c-31a-30b.2 [qa-] --- --
1009760 Hook up crash reporting for GMP plugins (openh264) Firefox 33 VERIFIED :Felipe Gomes (needinfo for replies!) FIXED 1009764, 1035854, 1038961, 1039575, 1041226, 1054965 948160, 1015800, 1021232, 985255, 1009765, 1012951, 1017393, 1053473, 1057484 --- --
1009765 Add GMP plugin crashes to FHR crash reporting Firefox 34 VERIFIED Drew Willcoxon :adw FIXED 1052141, 1009760 948160, 985255, 1053473, 1053748, 1057484 [openh264-uplift] --- --
1009816 Firefox desktop: openh264 updates: check, download, install Firefox 33 VERIFIED Brian R. Bondy [:bbondy] FIXED 1013354, 1041181, 1048374, 1415340 948160, 1037767, 1039490, 1039555, 1052365, 985255, 1035225, 1037754, 1039226, 1039839, 1040060 --- --
1009909 Firefox desktop: Integrate the openh264 media plugin in the add-ons manager mozilla33 VERIFIED Georg Fritzsche [:gfritzsche] FIXED 1007694, 1032814 948160, 985255, 1039028, 1039226, 1040048, 1086668 --- --
1037767 Use straight nsIChannel instead of nsIIncrementalDownload for GMPInstallManager --- NEW 1039490, 1039555, 1009816, 1013354, 1039839, 1040060 948160, 985255, 1035225, 1037754 --- --
1039028 Provide info when "Show More Information" is selected for the OpenH264 plugin in the addon manager Firefox 35 VERIFIED Blair McBride [:Unfocused] (UNAVAILABLE) FIXED 985249, 1009909 948160 --- --
1039226 Trigger explicit OpenH264 updates from OpenH264Provider mozilla34 VERIFIED Georg Fritzsche [:gfritzsche] FIXED 1039490, 1039555, 1009816, 1009909, 1039839, 1040060, 1087674 948160, 1042161 --- --
1039490 Get rid of on the main thread IO from GMPInstallManager when updates are being installed --- NEW 1039555, 1009816, 1013354, 1039839, 1040060 948160, 1037767, 649889, 985255, 1035225, 1037754, 1039226 --- --
1039555 factor out common URL var resolution functions for app updates and gmp update/installs --- NEW 1009816, 1013354, 1039839, 1040060 948160, 1037767, 1039490, 985255, 1035225, 1037754, 1039226 --- --
1040048 Register the OpenH264 plugin from the OpenH264Provider on startup Firefox 33 VERIFIED Georg Fritzsche [:gfritzsche] FIXED 1009909 948160 --- --
1040937 Open H264 plugin stuck in disabled state after download mozilla33 VERIFIED Georg Fritzsche [:gfritzsche] FIXED 948160 --- --
1040941 Non-functional "preference" button for Open H264 plugin (depending on state) mozilla34 VERIFIED Georg Fritzsche [:gfritzsche] FIXED 948160 --- --
1041080 Fix OpenH264Provider path registration, default enabled state and logging mozilla33 VERIFIED Georg Fritzsche [:gfritzsche] FIXED 948160, 1041097 --- --
1041232 Disabling a GMP plugin while it's in-use in a call leads to a UAF crash. mozilla34 VERIFIED Randell Jesup [:jesup] (needinfo me) FIXED 948160, 1043671, 1038961, 1043531 --- --
1041525 Possible deadlock in Crashreporter::OOPInit() from GMP plugin initialization mozilla34 VERIFIED Georg Fritzsche [:gfritzsche] FIXED 948160, 1038961, 1042348, 1043531 --- --
1042161 Handle OpenH264 updates for long-running sessions mozilla34 VERIFIED Georg Fritzsche [:gfritzsche] FIXED 1039226 948160, 1046182, 1056199 --- --
1042348 crash in libsystem_kernel.dylib@0x15866 (mozilla::ipc::GeckoChildProcessHost::PerformAsyncLaunchInternal) mozilla34 VERIFIED Georg Fritzsche [:gfritzsche] FIXED 1041525 948160 fixed by bug 1041525 --- --
1043531 OpenH264 crash reporting notification not shown Firefox 34 VERIFIED Georg Fritzsche [:gfritzsche] FIXED 1041226, 1041232, 1041525, 1045500 948160, 1044213, 1045100 --- --
1044245 GMP with OpenH264 crashes on Windows. mozilla34 VERIFIED Randell Jesup [:jesup] (needinfo me) FIXED 1047442 948160 --- P1
1045209 The OpenH264 path should be relative to the profile directory and include a version subdirectory mozilla34 VERIFIED Qeole FIXED 1059011 948160, 1053727, 1053729, 1058042 [lang=js] [diamond] --- --
1045500 Crash reporter notification cuts off OpenH264 plugin name Firefox 34 VERIFIED Georg Fritzsche [:gfritzsche] FIXED 948160, 1043531 --- --
1046052 Create mochitest-browser test for GMP crash reporting --- NEW 1087246, 1044408, 1146955 948160 [lang=js] --- P3
1046644 Honor OpenH264 autoupdate pref for the initial GMP install check Firefox 34 VERIFIED Brian R. Bondy [:bbondy] FIXED 948160, 1057990 --- --
1049501 crash in mozilla::gmp::PGMPParent::DeallocShmems() mozilla34 VERIFIED Randell Jesup [:jesup] (needinfo me) FIXED 948160 --- --
1053745 Include OpenH264 plugin in FHR data Firefox 35 VERIFIED Benjamin Smedberg FIXED 948160 [openh264-uplift] [lang=js] --- --
1053746 Add telemetry probes for OpenH264 plugin Firefox 35 VERIFIED Benjamin Smedberg FIXED 948160 [openh264-uplift] [lang=js] --- --
1054965 [Mac Only] Missing "Submit a crash report" button from OpenH264 crash reporting notification Firefox 34 VERIFIED Benjamin Smedberg FIXED 948160, 1009760, 1012949 --- --
1055080 H264 fmtp in SDP from about:webrtc differs from SDP returned by createOffer/Answer --- NEW 948160, 1165687, 1624328 --- --
1102531 On-demand download of Cisco H.264 plugin should occur over HTTPS --- NEW 948160 --- P3
1196703 Cisco H.264 plugin should be protected by stronger signature --- NEW 948160 --- --
1444116 Update Homepage in plugin description from HTTP to HTTPS --- VERIFIED Nils Ohlmeier [:drno] FIXED 948160 --- P5
1619988 [meta] Update OpenH264 to 2.4.1 --- ASSIGNED Andrew Osmond [:aosmond] (he/him) 1670333, 1831163, 1267495, 1513000, 1795014, 1825401, 1825404, 1827333, 1827703, 1830297, 1832354, 1832568 948160, 1827407, 1663844 --- P3
1831163 Make WebRTC configure new options with OpenH264 2.3.2 --- ASSIGNED Andrew Osmond [:aosmond] (he/him) 948160, 1619988 --- P3

35 Total; 9 Open (25.71%); 0 Resolved (0%); 26 Verified (74.29%);