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Current status

-current status image

Desired result

-I wish the video was played without stopping.

During the 4k video test in Cobalt version (10.52708), the video stops after a certain amount of time and only the loading progress is returned.

  • Did I make the wrong porting?
  • Then why are these problems occurring?

I would be grateful if you could answer the question.

Thank you.

joshua787
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2 Answers2

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First of all, how often do you see this issue? Can you also test with Cobalt RC_9 branch? master is under very active development

In the mean time, I will analyze our server log for your playback from our server. By the way, when did you take the screenshot picture? I need the exact time and your time zone.

Daniel Juyung Seo
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  • Thank you for your reply. 1. It is always generated in the vp9 codec. 2. Do I have to test on RC_9 (9.55360)? Can not test in version 9.28152? – joshua787 May 15 '17 at 06:51
  • The screenshot was taken about 10:19 am in Korea time. – joshua787 May 15 '17 at 07:36
  • 1. We serve 4k stream only with VP9 so that doesn't matter. My question is how often do you see the issue? Is it 100% reproducible? 2. 9.29152 should work IMO but I recommend you to work with the up-to-date one. – Daniel Juyung Seo May 15 '17 at 09:07
  • 1. 100% reproduced. 2. As you said, I tested with version 9.34413 which is one version higher than 9.28152, and the same thing happens. 3. I want to clone RC9 from http://https.cobalt.googlesource.com/cobalt, how do I clone it? I use the command "git clone https://cobalt.googlesource.com/cobalt" to get the latest transition. I want to download RC9. – joshua787 May 16 '17 at 06:42
  • RC_9 is a git branch, you can fetch RC_9 branch in this way. 1. git clone https://cobalt.googlesource.com/cobalt 2. git checkout RC_9 – Daniel Juyung Seo May 16 '17 at 15:22
  • I have confirmed whether to play 4k video (vp9) in RC_9. Thank you, Daniel. It worked on 1920 * 1080, but stopped on 3840 * 2160. Is this part of our platform problem? – joshua787 May 22 '17 at 02:37
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Can you give me the values of SB_MEDIA_SOURCE_BUFFER_STREAM_AUDIO_MEMORY_LIMIT and SB_MEDIA_SOURCE_BUFFER_STREAM_VIDEO_MEMORY_LIMIT in configuration_public.h? As Daniel suggested, upgrade to COBALT_9 may solve this issue.

xiaoming
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  • SB_MEDIA_SOURCE_BUFFER_STREAM_AUDIO_MEMORY_LIMIT (3U * 1024U * 1024U) SB_MEDIA_SOURCE_BUFFER_STREAM_VIDEO_MEMORY_LIMIT(16U * 1024U * 1024U) i will try COBALT_9 thank u for reply. – joshua787 May 16 '17 at 05:55
  • You can use the following memory settings for 4k playback: 1. memory buffer limit = 80 MB. 2. video buffer limit = 60 MB. 3. audio buffer limit = 5 MB. – xiaoming May 17 '17 at 17:37
  • thank you for reply, xiaoming but, I set the size of the memory you suggested, but when playing 3840 * 2160 video on our platform, the 4k video stops. 1. Is it a memory problem that runs on 1920 * 1080 but stops on 3840 * 2160? Or am I not good at porting? – joshua787 May 22 '17 at 02:39