Web UI Playback Windows 10

Beta Community DVR Beta
#1

I'm having a problem watching recordings from the web UI with Windows 10. I start the recording and everything is fine. The transcoder speed using hardware is around 4-5x. Next, I use the scrubber bar to move forward in the program. When I do this, the transcoding speed drops to less than one and starts using 100% of my Intel i3 3225 CPU power. The task manager shows 7-10 ffmpeg.exe processes spawned by Channels with each one using 5-20% CPU. Even if I stop playback, those processes keep going unless I end them using the task manager or reboot the PC. This is repeatable for any recording. If I hit the Stop button before using the scrub bar, then the ffmpeg process ends and my CPU load goes back to normal.

#2

Hrm, that’s a nasty bug. What browser are you using?

#3

Can you also post the entries from the Log tab when this happens?

#4

I’m using Google Chrome to watch the recordings.

Here is the log file.

2017/05/01 19:47:30 [DVR] Recording engine stopped.
2017/05/01 19:47:33 [DVR] Recording engine started in G:\DVR
2017/05/01 19:47:33 [DVR] Waiting 12m26.4532885s until next job 1493683200-9 Kevin Can Wait
2017/05/01 19:47:33 [SYS] Created database snapshot: backup-20170501.194733
2017/05/01 19:47:43 [IDX] Pruned 18 expired airings from USA-OTA28269 in 71.0481ms.
2017/05/01 19:48:52 [SYS] Starting Channels DVR v2017.04.28.2317 (windows-x86_64) in C:\ProgramData\ChannelsDVR\data
2017/05/01 19:48:55 [HDR] Found 1 devices
2017/05/01 19:48:55 [SYS] Started HTTP Server
2017/05/01 19:49:14 [DVR] Recording engine started in G:\DVR
2017/05/01 19:49:14 [DVR] Waiting 10m45.6993796s until next job 1493683200-9 Kevin Can Wait
2017/05/01 19:49:14 [SYS] Bonjour service running for dvr-starkiller.local. [10.0.0.11]
2017/05/01 19:49:14 [NAT] Successfully mapped port 8089 using natpmp
2017/05/01 19:49:14 [SYS] Created database snapshot: backup-20170501.194914
2017/05/01 19:49:24 [IDX] Pruned 0 expired airings from USA-OTA28269 in 4.0045ms.
2017/05/01 19:50:46 [HLS] Starting transcoder for file-105 at 41m24s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
[mpegts @ 00000000011fbe80] Dropped corrupted packet (stream = 1)
[mpegts @ 00000000011fbe80] Dropped corrupted packet (stream = 2)
2017/05/01 19:50:53 [HLS] Stopping transcoder for file-105 after seek to 42m12s (out=41m39.215211s, finished=false)
2017/05/01 19:50:53 [HLS] Starting transcoder for file-105 at 42m28s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:53 [HLS] Starting transcoder for file-105 at 42m12s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:53 [HLS] Starting transcoder for file-105 at 42m44s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
[mpegts @ 0000000000edbe80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000edbe80] Dropped corrupted packet (stream = 2)
2017/05/01 19:50:53 [HLS] Stopping transcoder for file-105 after seek to 43m30s (out=0s, finished=false)
2017/05/01 19:50:53 [HLS] Stopping transcoder for file-105 after seek to 43m46s (out=0s, finished=false)
[mpegts @ 0000000000dfbe80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000dfbe80] Dropped corrupted packet (stream = 2)
2017/05/01 19:50:53 [HLS] Starting transcoder for file-105 at 42m58s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:53 [HLS] Starting transcoder for file-105 at 43m30s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:53 [HLS] Starting transcoder for file-105 at 44m2s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:53 [HLS] Starting transcoder for file-105 at 43m46s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:53 [HLS] Starting transcoder for file-105 at 43m14s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:53 [HLS] Stopping transcoder for file-105 after seek to 44m34s (out=0s, finished=false)
[mpegts @ 0000000000dcbe80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000dcbe80] Dropped corrupted packet (stream = 2)
2017/05/01 19:50:53 [HLS] Stopping transcoder for file-105 after seek to 44m50s (out=0s, finished=false)
2017/05/01 19:50:53 [HLS] Starting transcoder for file-105 at 44m18s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:53 [HLS] Stopping transcoder for file-105 after seek to 45m6s (out=0s, finished=false)
[mpegts @ 000000000104be80] Dropped corrupted packet (stream = 1)
[mpegts @ 000000000104be80] Dropped corrupted packet (stream = 2)
[mpegts @ 0000000000f8be80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000f8be80] Dropped corrupted packet (stream = 2)
[mpegts @ 0000000000fabe80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000fabe80] Dropped corrupted packet (stream = 2)
2017/05/01 19:50:53 [HLS] Starting transcoder for file-105 at 45m22s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:54 [HLS] Starting transcoder for file-105 at 44m34s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:54 [HLS] Starting transcoder for file-105 at 45m6s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
[mpegts @ 0000000000dcbe80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000dcbe80] Dropped corrupted packet (stream = 2)
[mpegts @ 0000000000d1be80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000d1be80] Dropped corrupted packet (stream = 2)
2017/05/01 19:50:54 [HLS] Starting transcoder for file-105 at 45m38s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:54 [HLS] Starting transcoder for file-105 at 44m50s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
[mpegts @ 0000000000d4be80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000d4be80] Dropped corrupted packet (stream = 2)
2017/05/01 19:50:54 [HLS] Starting transcoder for file-105 at 46m10s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:54 [HLS] Starting transcoder for file-105 at 46m26s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
2017/05/01 19:50:54 [HLS] Starting transcoder for file-105 at 45m54s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
[mpegts @ 000000000109be80] Dropped corrupted packet (stream = 1)
[mpegts @ 000000000109be80] Dropped corrupted packet (stream = 2)
[mpegts @ 000000000101be80] Dropped corrupted packet (stream = 1)
[mpegts @ 000000000101be80] Dropped corrupted packet (stream = 2)
[mpegts @ 0000000000edbe80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000edbe80] Dropped corrupted packet (stream = 2)
[mpegts @ 0000000000cfbe80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000cfbe80] Dropped corrupted packet (stream = 2)
[mpegts @ 0000000000eebe80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000eebe80] Dropped corrupted packet (stream = 2)
2017/05/01 19:51:07 [HLS] Stopping transcoder for file-105 after seek to 46m28s (out=45m56.485833s, finished=false)
2017/05/01 19:51:07 [HLS] Stopping transcoder session file-105 @ 45m56.485833s
2017/05/01 19:51:08 [HLS] Starting transcoder for file-105 at 46m28s (encoder=h264_qsv, resolution=720, deinterlacer=blend, bitrate=2000)
[mpegts @ 0000000000f0be80] Dropped corrupted packet (stream = 1)
[mpegts @ 0000000000f0be80] Dropped corrupted packet (stream = 2)
#5

I tried single clicking on the scrub bar and this did not cause any issues with CPU load. In the previous example, I clicked and dragged the scrub bar to the time I wanted. I think the click and drag is being interpreted as multiple clicks by Channels.

1 Like
#6

Great catch, I can reproduce as well with click-and-drag. Will fix for the next build.

#7

Does this mean that scrubbing will finally work with transcoding on the web ui?

I’ve never been able to use scrubbing with any browser/os, hence have to view all commercials on web ui, as there is no ffd/rew either.

If so, this would be a huge improvement when using web ui.

#8

WOW!

Just now tried scrubbing and it seems to be working! Probably a combo of not retrying in the last two months on other browsers…Lately I’ve been using a Surface Pro due to larger display area (and encountering the same problem as above…resultant behaviour was similar to my previous attempts), plus I did switch to a higher powered server.

Will have to test more tomorrow but I’m :grin:.

Still would really like to see a 30/7 or 10 skip, as trying to control scrubbing is a bit difficult for me, but I’ll keep trying to master my limitations.

#9

This is all I see in Chrome Browser. Windows 10

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