Closed Bug 1450952 Opened 7 years ago Closed 7 years ago

Youtube livestream resends init data resulting in audio pops

Categories

(Core :: Audio/Video: Playback, defect, P2)

Product:
Core
Component:
Audio/Video: Playback
Version:
59 Branch
Type:
defect

Tracking

()

Status:
VERIFIED FIXED
Milestone:
mozilla63
Tracking Flags:
Tracking Status
firefox-esr52 --- wontfix
firefox-esr60 --- wontfix
firefox59 --- wontfix
firefox60 --- wontfix
firefox61 --- wontfix
firefox62 --- wontfix
firefox63 --- verified

People

(Reporter: ludvig.almvaang, Assigned: bryce)

References

Details

(Keywords: regression)

Attachments

(1 file)

Bug 1450952 - If TrackBuffersManager is sent the same init segment, reuse same StreamID.
46 bytes, text/x-phabricator-request
jya
: review+
Details | Review
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:52.9) Gecko/20100101 Goanna/3.4 Firefox/52.9 PaleMoon/27.8.3 Build ID: 20180327195339 Steps to reproduce: Open any youtube livestream. Actual results: Hear a crackling noise in the background. (Recorded demonstration of the issue, https://youtu.be/IqV5o00oLc4) Expected results: There should have not been any crackling sound.
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:61.0) Gecko/20100101 Firefox/61.0 Build ID: 20180417225505 Hi Ludvig, I managed to reproduce the issue as described in the report on the latest Firefox Nightly 61.0a1, Firefox 60.0b13 and Firefox 59.0.2. - Windows 10 x64.
Status: UNCONFIRMED → NEW
status-firefox59: --- → affected
status-firefox60: --- → affected
status-firefox61: --- → affected
Component: Untriaged → Audio/Video: Playback
Ever confirmed: true
Product: Firefox → Core
Please provide a copy of about:support output as well as a URL of a video exhibiting the issue thank you
Flags: needinfo?(ludvig.almvaang)
(In reply to Jean-Yves Avenard [:jya] from comment #2) > Please provide a copy of about:support output as well as a URL of a video > exhibiting the issue > thank you Programfakta ------------ Namn: Firefox Version: 60.0b14 Versions-ID: 20180419200216 Uppdateringskanal: beta Användaragent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0 OS: Windows_NT 10.0 Multiprocess fönster: 1/1 (Aktiverad som standard) Webbinnehållsprocesser: 5/4 Stylo: content = true (aktiverad som standard), chrome = true (aktiverad som standard) Företagspolicyer: Inaktiv Google-nyckel: Hittad Mozilla Location Service-nyckel: Hittad Felsäkert läge: false Kraschrapporter för de senaste 3 dagarna ---------------------------------------- Alla kraschrapporter Firefox Funktioner ------------------ Namn: Activity Stream Version: 2018.04.18.1109-e897108a ID: activity-stream@mozilla.org Namn: Application Update Service Helper Version: 2.0 ID: aushelper@mozilla.org Namn: Firefox Screenshots Version: 30.1.0 ID: screenshots@mozilla.org Namn: Follow-on Search Telemetry Version: 0.9.6 ID: followonsearch@mozilla.com Namn: Form Autofill Version: 1.0 ID: formautofill@mozilla.org Namn: Photon onboarding Version: 1.0 ID: onboarding@mozilla.org Namn: Pocket Version: 1.0.5 ID: firefox@getpocket.com Namn: TLS 1.3 gradual roll-out fallback-limit Version: 1.0 ID: bug1448176@mozilla.org">tls13-version-fallback-rollout-bug1448176@mozilla.org Namn: Web Compat Version: 1.1 ID: webcompat@mozilla.org Tillägg ------- Namn: Cookie AutoDelete Version: 2.1.2 Aktiverad: true ID: CookieAutoDelete@kennydo.com Namn: Disconnect Version: 5.18.21 Aktiverad: true ID: 2.0@disconnect.me Namn: HTTPS Everywhere Version: 2018.4.11 Aktiverad: true ID: https-everywhere-eff@eff.org Namn: Tampermonkey Version: 4.6.5757 Aktiverad: true ID: firefox@tampermonkey.net Namn: uBlock Origin Version: 1.16.0 Aktiverad: true ID: uBlock0@raymondhill.net Namn: Cookie Manager Version: 1.4 Aktiverad: false ID: cookie-manager@robwu.nl Säkerhetsprogram ---------------- Typ: Typ: Typ: Grafik ------ Funktioner Komposition: Direct3D 11 (Advanced Layers) Asynkron panorera/zoom: hjulinmatning aktiverad; rullningslist är dragaktiverad; tangentbord aktiverad; autoscroll aktiverad WebGL 1 drivrutinsinfo WSI: EGL_VENDOR: Google Inc. 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atiumdag atidxx32 atidxx32 atiumdva atiumd6a Kortleverantörs-ID: 00000000 RAM: 8192 Diagnostik AzureCanvasAccelerated: 0 AzureCanvasBackend: Direct2D 1.1 AzureCanvasBackend (UI Process): skia AzureContentBackend: Direct2D 1.1 AzureContentBackend (UI Process): skia AzureFallbackCanvasBackend (UI Process): cairo GPUProcessPid: 11320 Beslutslogg WEBRENDER: opt-in by default: WebRender is an opt-in feature unavailable by runtime: Build doesn't include WebRender Media ----- Ljudgränssnitt: wasapi Max kanaler: 2 Önskad kanallayout: stereo Önskad samplingshastighet: 44100 Utmatningsenheter Namn: Grupp 4 - Digital Display Audio (AMD High Definition Audio Device): HDAUDIO\FUNC_01&VEN_1002&DEV_AA01&SUBSYS_00AA0100&REV_1005\7&a89ac7c&0&0001 VoiceMeeter Input (VB-Audio VoiceMeeter VAIO): ROOT\MEDIA\0000 6 - Digital Display Audio (AMD High Definition Audio Device): HDAUDIO\FUNC_01&VEN_1002&DEV_AA01&SUBSYS_00AA0100&REV_1005\7&a89ac7c&0&0001 Högtalare (Realtek High Definition Audio): 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HDAUDIO\FUNC_01&VEN_1002&DEV_AA01&SUBSYS_00AA0100&REV_1005\7&a89ac7c&0&0001 Rear Pink In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1462FA34&REV_1003\5&1a9a71d6&0&0001 Front Green In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1462FA34&REV_1003\5&1a9a71d6&0&0001 Rear Green In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1462FA34&REV_1003\5&1a9a71d6&0&0001 Internt AUX-uttag (AMD High Definition Audio Device): HDAUDIO\FUNC_01&VEN_1002&DEV_AA01&SUBSYS_00AA0100&REV_1005\7&a89ac7c&0&0001 Viktiga ändrade inställningar ----------------------------- accessibility.force_disabled: 1 accessibility.typeaheadfind.flashBar: 0 browser.cache.disk.capacity: 51200 browser.cache.disk.enable: false browser.cache.disk.filesystem_reported: 1 browser.cache.disk.smart_size.first_run: false browser.cache.memory.max_entry_size: -1 browser.places.smartBookmarksVersion: 8 browser.search.suggest.enabled: false 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Viktiga låsta inställningar --------------------------- Platser databas --------------- JavaScript ---------- Inkrementell GC: true Tillgänglighet -------------- Aktiverad: false Förhindra tillgänglighet: 1 Tillgänglig hanterare använd: true Tillgänglighet instantiator: Biblioteksversioner ------------------- NSPR Förväntad minimiversion: 4.19 Version som används: 4.19 NSS Förväntad minimiversion: 3.36.1 Version som används: 3.36.1 NSSSMIME Förväntad minimiversion: 3.36.1 Version som används: 3.36.1 NSSSSL Förväntad minimiversion: 3.36.1 Version som används: 3.36.1 NSSUTIL Förväntad minimiversion: 3.36.1 Version som används: 3.36.1 Experimentella funktioner ------------------------- Sandlåda -------- Sandlådenivå för innehållsprocess: 5 Effektiv sandlådenivå för innehållsprocess: 5 Internationalisering & lokalisering ----------------------------------- Programinställningar Begärda språkversioner: ["sv-SE","en-US"] Tillgängliga språkversioner: ["sv-SE","en-US"] Språkversioner app: ["sv-SE","en-US"] Regionala inställningar: ["sv-SE"] Standardspråk: "sv-SE" Operativsystem Språkversioner system: ["sv-SE"] Regionala inställningar: ["sv-SE"]
Flags: needinfo?(ludvig.almvaang)
(In reply to Jean-Yves Avenard [:jya] from comment #2) > Please provide a copy of about:support output as well as a URL of a video > exhibiting the issue > thank you https://www.youtube.com/channel/UC4R8DWoMoI7CAwX8_LjQHig
Place in the reproduction video where the issue is shown[0]. This is a lot easier to hear on the blank decoder, but I'm hearing it in other youtube streams also (headphones helped). :jya, do you have any thoughts as to what might be causing this? [0]: https://youtu.be/IqV5o00oLc4?t=180
Flags: needinfo?(jyavenard)
Priority: -- → P2
I can hear audio cracks here yes... currentTime is only like 1.5s behind the end of the buffered data. I wonder if we actually keep waiting on data in there, which adds latency.. As we will keep re-seeking in the audio, I wonder if the windows decoder doesn't deal properly with the pre-roll value and when we think we're getting a next frame we actually don't. That could definitely cause some crackling... To confirm this we could once again attempt to not seek for the audio streams when we're waiting for data... There were issues doing so, I can't recally what those were though. On another topic, I get 6% dropped frames rate on those streams.. that's not good
Flags: needinfo?(jyavenard)
I've taken a look at if this is related to an issue we've seen previously with the MediaFormatReader running out of data then draining and seeking. I added an extra clause here[0] here so we wouldn't drain for audio, but still got the issue. I also verified that the issue is present on Linux, so it looks like this is not Windows specific. [0]: https://searchfox.org/mozilla-central/rev/93d2b9860b3d341258c7c5dcd4e278dea544432b/dom/media/MediaFormatReader.cpp#2557
OS: Unspecified → All
Hardware: Unspecified → All
Logging the MediaFormatReader while listening to affected streams shows we're doing drains due to changing of track IDs[0]. I don't see this on other streams, and wonder if this is our culprit. [0]: https://searchfox.org/mozilla-central/rev/39b790b29543a4718d876d8ca3fd179d82fc24f7/dom/media/MediaFormatReader.cpp#2419
If that so, it would indicate that YouTube is sending a new init segment at regular intervals. Now we could add a workaround where if the audio init segment is identical to the previous one, we don't increment the stream id counter.
Cheers. Will take a look into that.
Assignee: nobody → bvandyk
Some MSE streams will resend the same init segment. In these cases we can treat the following data as belonging to the already existing stream. We do this by reusing the same stream id. This stops us tearing down and restarting decoders in these cases. This has the benefit of stopping us introducing gaps to audio and/or video.
Summary: audio issue with youtube livestream → Youtube livestream resends init data resulting in audio pops
Comment on attachment 8987917 [details] Bug 1450952 - If TrackBuffersManager is sent the same init segment, reuse same StreamID. Jean-Yves Avenard [:jya] has approved the revision. https://phabricator.services.mozilla.com/D1837
Attachment #8987917 - Flags: review+
Comment on attachment 8987917 [details] Bug 1450952 - If TrackBuffersManager is sent the same init segment, reuse same StreamID. Jean-Yves Avenard [:jya] has requested changes to the revision. https://phabricator.services.mozilla.com/D1837
Attachment #8987917 - Flags: review+
Comment on attachment 8987917 [details] Bug 1450952 - If TrackBuffersManager is sent the same init segment, reuse same StreamID. Jean-Yves Avenard [:jya] has approved the revision. https://phabricator.services.mozilla.com/D1837
Attachment #8987917 - Flags: review+
Pushed by bvandyk@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/1afebbbd7b36 If TrackBuffersManager is sent the same init segment, reuse same StreamID. r=jya
https://hg.mozilla.org/mozilla-central/rev/1afebbbd7b36
Status: NEW → RESOLVED
Closed: 7 years ago
status-firefox63: --- → fixed
Resolution: --- → FIXED
Target Milestone: --- → mozilla63
Landing this code looks to have helped the popping issue, but also seems to lead to us getting less init data dupes. Testing today with a pre-patch browser still shows popping every second or two. With the fix applied the popping is fixed, and also our handling path for dupes is hit initially, but then is not hit again (I tested for about 30 seconds). This appears to be without changes to youtube's handling (as with old versions of the browser and without the patch the issue still happens). Speculation: I wonder if our previously handling somehow triggered more init segments (some unhappy path handling by youtube) to be sent and led to a downward spiral.
Is this something which should ride the trains to release or did you want to nominate it for Beta consideration?
Flags: needinfo?(bvandyk)
Can let it ride the train, the issue was fix upstream by YouTube.
Flags: needinfo?(bvandyk)
I've seen another report of this causing performance issues outside youtube (bug 1475848). For those with lower end hardware it can cause noticeable performance issues, but unless we notice any nasty examples of this in the wild, riding the trains sounds good.
Verified - Fixed on the latest Beta 63.0b12, build ID: 20181004174654 on Windows 10 x64, Mac OS 10.13 and Ubuntu 16.04.
Status: RESOLVED → VERIFIED
status-firefox63: fixed → verified
Flags: qe-verify+
Regressions: 1679283
No longer regressions: 1679283
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