2016-09-06, 21:35
I've searched for "stutter" here, but didn't find any answer relevant to my issue.
My setup is the folllowing:
I've been using KODI on my RPi2 for about a year without any problems. Today I tried playing back a video, and it constantly stutters during playback. The CPU and memory usage figures are between 85-100% for both CPU cores, compared with 7-20% when playing back other video files. The video is from a series. I downloaded the series from three different sources and all episodes I've tried from the three series have the same problem, so I think it must be a codec problem. Is it possible that the problem videos are decoded locally on the RPi instead of being decoded on the Synology?
I've used MediaInfo to analyze the good and bad files, but I don't know enough about codecs to understand what the figures mean. I notice that the good file uses AVC inside the MPEG-4 container, while all the bad files I tried use HEVC inside the Matroska container.
Can anyone help?
Good file:
Video
Bad file:
My setup is the folllowing:
Quote:KODI v15.2
OpenElect 5.0.3
RPi2.arm
Connected via NFS to a Synology server across a wired network
I've been using KODI on my RPi2 for about a year without any problems. Today I tried playing back a video, and it constantly stutters during playback. The CPU and memory usage figures are between 85-100% for both CPU cores, compared with 7-20% when playing back other video files. The video is from a series. I downloaded the series from three different sources and all episodes I've tried from the three series have the same problem, so I think it must be a codec problem. Is it possible that the problem videos are decoded locally on the RPi instead of being decoded on the Synology?
I've used MediaInfo to analyze the good and bad files, but I don't know enough about codecs to understand what the figures mean. I notice that the good file uses AVC inside the MPEG-4 container, while all the bad files I tried use HEVC inside the Matroska container.
Can anyone help?
Good file:
Video
Code:
MPEG-4 (Base Media)
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1 h 0 min
Bit rate : 2 051 kb/s
Maximum bit rate : 36.7 Mb/s
Width : 1 920 pixels
Height : 1 078 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.041
Stream size : 883 MiB (94%)
Writing library : x264 core 146 r2538 121396c
Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=9 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=4 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=2051 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=62500 / vbv_bufsize=78125 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2015-06-16 20:06:06
Tagged date : UTC 2015-06-16 20:06:13Bad file:
Code:
Matroska
1 video stream: HEVA
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : [email protected]@Main
Codec ID : V_MPEGH/ISO/HEVC
Duration : 49 min 55 s
Bit rate : 635 kb/s
Width : 1 280 pixels
Height : 720 pixels
Original height : 718 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Bits/(Pixel*Frame) : 0.029
Stream size : 227 MiB (91%)
Writing library : x265 1.8+2-55a4a9b920ff:[Windows][GCC 5.2.0][64 bit] 8bit+10bit+12bit
Encoding settings : wpp / ctu=64 / min-cu-size=8 / max-tu-size=32 / tu-intra-depth=1 / tu-inter-depth=1 / me=1 / subme=2 / merange=57 / no-rect / no-amp / max-merge=2 / temporal-mvp / no-early-skip / rdpenalty=0 / no-tskip / no-tskip-fast / strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / no-fast-intra / open-gop / no-temporal-layers / interlace=0 / keyint=250 / min-keyint=23 / scenecut=40 / rc-lookahead=20 / lookahead-slices=0 / bframes=4 / bframe-bias=0 / b-adapt=2 / ref=3 / limit-refs=0 / weightp / no-weightb / aq-mode=1 / qg-size=32 / aq-strength=1.00 / cbqpoffs=0 / crqpoffs=0 / rd=3 / psy-rd=0.30 / rdoq-level=0 / psy-rdoq=0.00 / signhide / deblock / sao / no-sao-non-deblock / b-pyramid / cutree / rc=2 / pass / bitrate=634 / qcomp=0.60 / qpmin=0 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ipratio=1.40 / pbratio=1.30
Default : Yes
Forced : No