Android Issue with 4K playback - Printable Version +- Kodi Community Forum (https://forum.kodi.tv) +-- Forum: Support (https://forum.kodi.tv/forumdisplay.php?fid=33) +--- Forum: General Support (https://forum.kodi.tv/forumdisplay.php?fid=111) +---- Forum: Android (https://forum.kodi.tv/forumdisplay.php?fid=164) +---- Thread: Android Issue with 4K playback (/showthread.php?tid=330530) |
Issue with 4K playback - Jerry911 - 2018-04-04 Hi, after years of happily using Kodi I finally ran into a problem that I can't seem to tackle. When I try to play 4K videos through Kodi I get a message that the source is too slow. This is my setup: - Synology ds418 nas - Seagate IronWolf ST6000VN0041 6 TB (read speed 195MB/s) - Gigabit ethernet - Minix neo u9-h (connected with same gigabit ethernet) - Kodi 17.6 The 6TB drive holds the 4K movie and when I play it I gt the source is too slow message. This is the file information Format : HEVC Format profile : Main [email protected]@high Codec ID : V_MPEGH/ISO/HEVC Bit rate : 45.9 Mb/s Width : 3 840 pixels Height : 2 160 pixels Frame rate mode : Constant Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 (Type 2) Bit depth : 10 bits Bits/(Pixel*Frame) : 0.231 Stream size : 48.7 GiB (82%) What I tried: - Inserted a Samsung 840 EVO 250GB SSD into synology (read speed 540MB/s) - Moved 4K material to SSD - Tried to stream it, same message appears. - Hooked up Minix directly to the synology nas through cat 5e cable, same message appears. This is some information that I got from the NAS while I stream the 4K file from the SSD. Disk read speed with 1080p and 4K: Network speed with 1080p and 4K: What I notice is that the network speed is in KB/s and peaks at 8000 which is (according to google?) 64 Mb/s which in turn should be enough for the file I try to play (the file has a bit rate of 45.9 Mb/s) I also tried a network speed test between my laptop and the NAS which shows 431Mbps read speed: Who can help me to find the bottleneck? Is there something wrong with the math or am I looking over something? You can find a full debug log here (startup, playback of 4K file, shutdown) RE: Issue with 4K playback - fritsch - 2018-04-04 Use NFS instead of SMB and post your Debug Log - you basically missed the most relevant information. RE: Issue with 4K playback - Jerry911 - 2018-04-04 (2018-04-04, 19:53)fritsch Wrote: Use NFS instead of SMB and post your Debug Log - you basically missed the most relevant information.Hi fritsch, I added full debug log to the bottom of my post. Also I stream over SFTP. I used to use NFS but it gave issues with playback just randomly stopping for no apparent reason. RE: Issue with 4K playback - fritsch - 2018-04-04 SFTP <- try something else, please. RE: Issue with 4K playback - Jerry911 - 2018-04-04 (2018-04-04, 20:06)fritsch Wrote: SFTP <- try something else, please.Holy shoot it works over NFS, any technical explanation for this? RE: Issue with 4K playback - fritsch - 2018-04-04 Yeah. Many, one: SFTP has more pressure on the CPU (SSH + decryption), which reduces throughput. How much speed do you get if you copy something via sftp to your android box? RE: Issue with 4K playback - Jerry911 - 2018-04-23 (2018-04-04, 21:02)fritsch Wrote: Yeah. Many, one: SFTP has more pressure on the CPU (SSH + decryption), which reduces throughput. How much speed do you get if you copy something via sftp to your android box? Hi, I didn't have the chance to test the speed when I copy a file over sftp. Ever since I switched to NFS I noticed that playback sometimes just randomly stops and kodi quits back to the menu. In the beginning I didn't think much of it and assumed it was a one time thing, but now it happens more often than I would like. You can find a log of me starting a movie, it plays for a minute or four and then it just quits. Should I make a new thread for this? |