Linux - Chrome M68 - Vimeo 4K stuttering |
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Issue descriptionNot an encryption issue. Note platform. Chrome Version: 68.0.3423.2 OS: Linux What steps will reproduce the problem? (1) Use this play link https://vimeo.com/93003441 What is the expected result? Normal play with little jitter What happens instead? Frequent jumps and pauses. Comparing the playback from this window to an older Firefox on the same laptop shows significantly higher jitter in Chrome. chrome://media-internals: { "66:0": { "id": "66:0", "properties": { "render_id": 66, "player_id": 0, "origin_url": "https://vimeo.com/", "frame_url": "https://vimeo.com/93003441", "frame_title": "AWAKENING | NEW ZEALAND 4K on Vimeo", "url": "blob:https://vimeo.com/b5786e04-5a14-44d4-b21f-bd0ccb4e3a64", "info": "Selected video track: []", "pipeline_state": "kSuspended", "found_video_stream": true, "video_codec_name": "h264", "found_audio_stream": true, "audio_codec_name": "aac", "audio_dds": false, "audio_decoder": "FFmpegAudioDecoder", "debug": "(Log limit reached. Further similar entries may be suppressed): Parsed video frame has DTS 800000us, which is after the frame's PTS 760000us", "video_dds": false, "video_decoder": "FFmpegVideoDecoder", "audio_buffering_state": "BUFFERING_HAVE_ENOUGH", "video_buffering_state": "BUFFERING_HAVE_ENOUGH", "height": 2160, "width": 3840, "for_suspended_start": false, "pipeline_buffering_state": "BUFFERING_HAVE_ENOUGH", "duration": 266.48, "event": "PAUSE", "seek_target": 60.620666 }, "allEvents": [ { "time": 0, "key": "origin_url", "value": "https://vimeo.com/" }, { "time": 0.006000041961669922, "key": "frame_url", "value": "https://vimeo.com/93003441" }, { "time": 0.008000373840332031, "key": "frame_title", "value": "AWAKENING | NEW ZEALAND 4K on Vimeo" }, { "time": 0.11600017547607422, "key": "url", "value": "blob:https://vimeo.com/b5786e04-5a14-44d4-b21f-bd0ccb4e3a64" }, { "time": 0.1530003547668457, "key": "info", "value": "ChunkDemuxer: buffering by DTS" }, { "time": 6.775000095367432, "key": "pipeline_state", "value": "kStarting" }, { "time": 538.3400001525879, "key": "found_video_stream", "value": true }, { "time": 538.3420000076294, "key": "video_codec_name", "value": "h264" }, { "time": 592.0659999847412, "key": "found_audio_stream", "value": true }, { "time": 592.0720000267029, "key": "audio_codec_name", "value": "aac" }, { "time": 595.7440004348755, "key": "audio_dds", "value": false }, { "time": 595.7480001449585, "key": "audio_decoder", "value": "FFmpegAudioDecoder" }, { "time": 595.768000125885, "key": "info", "value": "Selected FFmpegAudioDecoder for audio decoding, config: codec: aac bytes_per_channel: 2 channel_layout: 3 channels: 2 samples_per_second: 48000 sample_format: 2 bytes_per_frame: 4 seek_preroll: 0ms codec_delay: 0 has extra data? false encrypted? false discard decoder delay? false" }, { "time": 595.844000339508, "key": "debug", "value": "Video rendering in low delay mode." }, { "time": 596.3850002288818, "key": "video_dds", "value": false }, { "time": 596.3880000114441, "key": "video_decoder", "value": "FFmpegVideoDecoder" }, { "time": 596.4079999923706, "key": "info", "value": "Selected FFmpegVideoDecoder for video decoding, config: codec: h264 format: 1 profile: h264 baseline coded size: [480,270] visible rect: [0,0,480,270] natural size: [480,270] has extra data? false encrypted? false rotation: 0°" }, { "time": 596.4460000991821, "key": "pipeline_state", "value": "kPlaying" }, { "time": 667.2390003204346, "key": "audio_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 873.7310004234314, "key": "debug", "value": "Parsed video frame has DTS 120000us, which is after the frame's PTS 40000us" }, { "time": 873.7350001335144, "key": "debug", "value": "Parsed video frame has DTS 160000us, which is after the frame's PTS 120000us" }, { "time": 873.7360000610352, "key": "debug", "value": "Parsed video frame has DTS 280000us, which is after the frame's PTS 200000us" }, { "time": 873.7380003929138, "key": "debug", "value": "Parsed video frame has DTS 320000us, which is after the frame's PTS 280000us" }, { "time": 873.7390003204346, "key": "debug", "value": "Parsed video frame has DTS 440000us, which is after the frame's PTS 360000us" }, { "time": 873.7410001754761, "key": "debug", "value": "Parsed video frame has DTS 480000us, which is after the frame's PTS 440000us" }, { "time": 873.7420001029968, "key": "debug", "value": "Parsed video frame has DTS 600000us, which is after the frame's PTS 520000us" }, { "time": 873.7430000305176, "key": "debug", "value": "Parsed video frame has DTS 640000us, which is after the frame's PTS 600000us" }, { "time": 873.7450003623962, "key": "debug", "value": "Parsed video frame has DTS 760000us, which is after the frame's PTS 680000us" }, { "time": 873.7470002174377, "key": "debug", "value": "(Log limit reached. Further similar entries may be suppressed): Parsed video frame has DTS 800000us, which is after the frame's PTS 760000us" }, { "time": 873.7870001792908, "key": "info", "value": "video decoder config changed midstream, new config: codec: h264 format: 1 profile: h264 high coded size: [1920,1080] visible rect: [0,0,1920,1080] natural size: [1920,1080] has extra data? false encrypted? false rotation: 0°" }, { "time": 892.389000415802, "key": "video_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 892.3970003128052, "key": "height", "value": 1080 }, { "time": 892.3970003128052, "key": "width", "value": 1920 }, { "time": 892.7250003814697, "key": "for_suspended_start", "value": false }, { "time": 892.7250003814697, "key": "pipeline_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 436.9420003890991, "key": "duration", "value": 266.48 }, { "time": 4855.709000110626, "key": "info", "value": "Effective playback rate changed from 0 to 1" }, { "time": 4855.776000022888, "key": "event", "value": "PLAY" }, { "time": 8415.523000240326, "key": "event", "value": "PAUSE" }, { "time": 8430.166000366211, "key": "event", "value": "PLAY" }, { "time": 8593.710000038147, "key": "video_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 8683.526000022888, "key": "audio_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 8683.589000225067, "key": "for_suspended_start", "value": false }, { "time": 8683.589000225067, "key": "pipeline_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 8753.13200044632, "key": "audio_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 9238.126000404358, "key": "info", "value": "video decoder config changed midstream, new config: codec: h264 format: 1 profile: h264 high coded size: [2560,1440] visible rect: [0,0,2560,1440] natural size: [2560,1440] has extra data? false encrypted? false rotation: 0°" }, { "time": 9239.87900018692, "key": "video_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 9239.916000366211, "key": "for_suspended_start", "value": false }, { "time": 9239.916000366211, "key": "pipeline_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 11410.174000263214, "key": "event", "value": "PAUSE" }, { "time": 11421.663000106812, "key": "event", "value": "PLAY" }, { "time": 11561.390000343323, "key": "height", "value": 1440 }, { "time": 11561.390000343323, "key": "width", "value": 2560 }, { "time": 11731.748000144958, "key": "info", "value": "video decoder config changed midstream, new config: codec: h264 format: 1 profile: h264 high coded size: [3840,2160] visible rect: [0,0,3840,2160] natural size: [3840,2160] has extra data? false encrypted? false rotation: 0°" }, { "time": 13448.019000053406, "key": "event", "value": "PAUSE" }, { "time": 14428.385000228882, "key": "seek_target", "value": 60.620666 }, { "time": 14428.421000003815, "key": "pipeline_state", "value": "kSeeking" }, { "time": 14428.480000019073, "key": "event", "value": "PLAY" }, { "time": 14428.482000350952, "key": "audio_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 14429.75700044632, "key": "video_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 14429.779000282288, "key": "pipeline_state", "value": "kPlaying" }, { "time": 15037.636000156403, "key": "audio_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 15317.707000255585, "key": "video_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 15319.109000205994, "key": "height", "value": 2160 }, { "time": 15319.109000205994, "key": "width", "value": 3840 }, { "time": 15320.03500032425, "key": "for_suspended_start", "value": false }, { "time": 15320.03500032425, "key": "pipeline_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 15620.861999988556, "key": "video_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 15622.349000453949, "key": "video_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 15669.403000354767, "key": "video_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 15671.012000083923, "key": "video_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 15703.680000305176, "key": "video_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 15705.437000274658, "key": "video_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 15805.551000118256, "key": "video_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 15807.244000434875, "key": "video_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 15846.90600013733, "key": "video_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 15848.53200006485, "key": "video_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 15881.800000190735, "key": "video_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 15883.37900018692, "key": "video_buffering_state", "value": 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}, { "time": 60692.84100008011, "key": "video_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 60694.75800037384, "key": "video_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 60725.736000061035, "key": "video_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 60727.22400045395, "key": "video_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 60837.517000198364, "key": "video_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 63876.65500020981, "key": "for_suspended_start", "value": false }, { "time": 63876.65500020981, "key": "pipeline_buffering_state", "value": "BUFFERING_HAVE_NOTHING" }, { "time": 64177.3060002327, "key": "event", "value": "PAUSE" }, { "time": 64932.03100013733, "key": "video_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 64932.082000255585, "key": "for_suspended_start", "value": false }, { "time": 64932.082000255585, "key": "pipeline_buffering_state", "value": "BUFFERING_HAVE_ENOUGH" }, { "time": 79183.31100034714, "key": "pipeline_state", "value": "kSuspending" }, { "time": 79189.86800003052, "key": "pipeline_state", "value": "kSuspended" }, { "time": 593024.9750003815, "key": "info", "value": "Selected video track: []" } ], "lastRendered": 0, "firstTimestamp_": 3446029997.503 } }
,
May 21 2018
What's your chrome://gpu say?
,
May 21 2018
Also, what are your system specs?
,
May 21 2018
dale, shared a gdoc with you and xiaohan. Also, if you want to see the device itself, let me know https://docs.google.com/document/d/1hFfSWY2r5ptUVz_y4SUoy-9ZifkeEjgd5e2DFrwLxVk/edit?usp=sharing
,
May 21 2018
Thanks. Hmm, I see this on my Z840 too, so something is definitely going awry here. The same clip on YouTube doesn't have any issues: https://www.youtube.com/watch?v=6D-A6CL3Pv8 I did confirm I'm not in the MseBufferByPts experiment, so I'm not sure what might be causing this. I'll see if I can extract the clip a bit more.
,
May 21 2018
Hmm, just looks like ffmpeg taking a long time to decode frames, it's at least ~20mbit H264, so it's possible this just can't be decoded reasonably in software. http://xorax.sea/v4k.mp4 has a local copy for src= testing that doesn't glitch as much. I'll check some older Chrome versions to see if this is a regression. Due to the high bit rate MSE might be eating a lot of encoded data copies.
,
May 21 2018
Yeah, short of more than doubling our memory usage by buffering a whole lot more frames (it required 30 and we buffer 12 currently), I think this is WAI. Older versions of Chrome don't perform any better here. I think we'd need to add support for Linux hardware decode to do better here, but that's a huge mess that we've tried to avoid getting into (instability, can't even get it working on corp machines).
,
May 21 2018
Just to clarify, is Firefox using a HW decoder on Linux?
,
May 22 2018
I'm not sure, they don't bundle support for H264, so they're using a system component. It's hard to tell what that's doing, it's probably ffmpeg, but it might be using vdpau/vaapi under the hood. In terms of CPU usage, there are 100% spikes when playing back using MSE that don't seem to happen when using src=. The src= playback seems to go fairly smoothly, but I'm not 100% sure it's the same content since I had to jump through hoops to download it. I've attached the trace and the spikes seem to coincide with some JS updates. Both the 4K VP9 and H264 encodes from YouTube (~2mb/s lower bitrate) play fine.
,
May 22 2018
xiaohan, since this is a known issue now, I'm going exclude the test case that exposed it from smoke for Linux. We test 4K elsewhere, this vimeo was an add-on case, I believe.
,
May 22 2018
You should just exclude from Linux, on Windows/Mac it should work fine since they have hardware decode.
,
May 22 2018
Yep. Agreed |
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Comment 1 by xhw...@chromium.org
, May 18 2018Components: -OS>Kernel>Video Internals>Media>Video
Owner: dalecur...@chromium.org
Status: Assigned (was: Untriaged)