color artefacts on dvb-c channels, where to start troubleshooting?
color artefacts on dvb-c channels, where to start troubleshooting? Replies (4)
RE: color artefacts on dvb-c channels, where to start troubleshooting?
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Added by Vahram Mazlumyan over 6 years ago
hello
I have the same issue , did you solve problem ?
RE: color artefacts on dvb-c channels, where to start troubleshooting?
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Added by saen acro over 6 years ago
To both can you share records of stream 5-10 min long for analyse.
I'm guessing operators use some cheap encoder or badly configured PC streamer
http://www.lighterra.com/papers/videoencodingh264/
this is from Chat with Vahram Mazlumyan
General Count : 332 Count of stream of this kind : 1 Kind of stream : General Kind of stream : General Stream identifier : 0 ID : 1 ID : 1 (0x1) Count of video streams : 1 Count of audio streams : 1 Count of menu streams : 1 Video_Format_List : AVC Video_Format_WithHint_List : AVC Codecs Video : AVC Audio_Format_List : MPEG Audio Audio_Format_WithHint_List : MPEG Audio Audio codecs : MPEG-1 Audio layer 2 Menu_Format_List : AVC / MPEG Audio Menu_Format_WithHint_List : AVC / MPEG Audio Menu codecs : AVC / MPA1L2 File name : vlc-record-2018-07-06-14h19m38s-ArmNews24-.ts File name : vlc-record-2018-07-06-14h19m38s-ArmNews24- File extension : ts Format : MPEG-TS Format : MPEG-TS Format/Extensions usually used : ts m2t m2s m4t m4s tmf ts tp trp ty Commercial name : MPEG-TS Internet media type : video/MP2T Codec : MPEG-TS Codec : MPEG-TS Codec/Extensions usually used : ts m2t m2s m4t m4s tmf ts tp trp ty File size : 54606480 File size : 52.1 MiB File size : 52 MiB File size : 52 MiB File size : 52.1 MiB File size : 52.08 MiB Duration : 72102.476563 Duration : 1 min 12 s Duration : 1 min 12 s 102 ms Duration : 1 min 12 s Duration : 00:01:12.102 Duration : 00:01:12:01 Duration : 00:01:12.102 (00:01:12:01) Overall bit rate mode : VBR Overall bit rate mode : Variable Overall bit rate : 6050899 Overall bit rate : 6 051 kb/s Frame rate : 25.000 Frame rate : 25.000 FPS Frame count : 1801 Stream size : 2832080 Stream size : 2.70 MiB (5%) Stream size : 3 MiB Stream size : 2.7 MiB Stream size : 2.70 MiB Stream size : 2.701 MiB Stream size : 2.70 MiB (5%) Proportion of this stream : 0.05186 File creation date : UTC 2018-07-06 10:36:31.428 File creation date (local) : 2018-07-06 13:36:31.428 File last modification date : UTC 2018-07-06 10:36:42.521 File last modification date (local) : 2018-07-06 13:36:42.521 OverallBitRate_Precision_Min : 6050857 OverallBitRate_Precision_Max : 6050941 Video Count : 344 Count of stream of this kind : 1 Kind of stream : Video Kind of stream : Video Stream identifier : 0 StreamOrder : 0-0 ID : 1025 ID : 1025 (0x401) Menu ID : 1 Menu ID : 1 (0x1) Format : AVC Format/Info : Advanced Video Codec Format/Url : http://developers.videolan.org/x264.html Commercial name : AVC Format profile : High@L4 Format settings : CABAC / 2 Ref Frames Format settings, CABAC : Yes Format settings, CABAC : Yes Format settings, RefFrames : 2 Format settings, RefFrames : 2 frames Format settings, GOP : M=3, N=15 Internet media type : video/H264 Codec ID : 27 Codec : AVC Codec : AVC Codec/Family : AVC Codec/Info : Advanced Video Codec Codec/Url : http://developers.videolan.org/x264.html Codec profile : High@L4 Codec settings : CABAC / 2 Ref Frames Codec settings, CABAC : Yes Codec_Settings_RefFrames : 2 Duration : 72040 Duration : 1 min 12 s Duration : 1 min 12 s 40 ms Duration : 1 min 12 s Duration : 00:01:12.040 Duration : 00:01:12:01 Duration : 00:01:12.040 (00:01:12:01) Bit rate : 5493318 Bit rate : 5 493 kb/s Width : 1920 Width : 1 920 pixels Height : 1080 Height : 1 080 pixels Stored_Height : 1088 Sampled_Width : 1920 Sampled_Height : 1080 Pixel aspect ratio : 1.000 Display aspect ratio : 1.778 Display aspect ratio : 16:9 Frame rate : 25.000 Frame rate : 25.000 FPS Frame count : 1801 Resolution : 8 Resolution : 8 bits Colorimetry : 4:2:0 Color space : YUV Chroma subsampling : 4:2:0 Chroma subsampling : 4:2:0 Bit depth : 8 Bit depth : 8 bits Scan type : MBAFF Scan type : MBAFF Scan type, store method : InterleavedFields Scan type, store method : Interleaved fields Scan order : TFF Scan order : Top Field First Interlacement : MBAFF Interlacement : MBAFF Bits/(Pixel*Frame) : 0.106 Delay : 15906218.000 Delay : 4 h 25 min Delay : 4 h 25 min 6 s 218 ms Delay : 4 h 25 min Delay : 04:25:06.218 Delay, origin : Container Delay, origin : Container Stream size : 49467328 Stream size : 47.2 MiB (91%) Stream size : 47 MiB Stream size : 47 MiB Stream size : 47.2 MiB Stream size : 47.18 MiB Stream size : 47.2 MiB (91%) Proportion of this stream : 0.90589 Audio Count : 275 Count of stream of this kind : 1 Kind of stream : Audio Kind of stream : Audio Stream identifier : 0 StreamOrder : 0-1 ID : 1026 ID : 1026 (0x402) Menu ID : 1 Menu ID : 1 (0x1) Format : MPEG Audio Commercial name : MPEG Audio Format version : Version 1 Format profile : Layer 2 Internet media type : audio/mpeg Codec ID : 3 Codec : MPA1L2 Codec : MPEG-1 Audio layer 2 Duration : 72096 Duration : 1 min 12 s Duration : 1 min 12 s 96 ms Duration : 1 min 12 s Duration : 00:01:12.096 Duration : 00:01:11:22 Duration : 00:01:12.096 (00:01:11:22) Bit rate mode : CBR Bit rate mode : Constant Bit rate : 256000 Bit rate : 256 kb/s Channel(s) : 2 Channel(s) : 2 channels Samples per frame : 1152 Sampling rate : 48000 Sampling rate : 48.0 kHz Samples count : 3460608 Frame rate : 41.667 Frame rate : 41.667 FPS (1152 SPF) Frame count : 3004 Compression mode : Lossy Compression mode : Lossy Delay : 15905447.000 Delay : 4 h 25 min Delay : 4 h 25 min 5 s 447 ms Delay : 4 h 25 min Delay : 04:25:05.447 Delay, origin : Container Delay, origin : Container Delay relative to video : -771 Delay relative to video : -771 ms Delay relative to video : -771 ms Delay relative to video : -771 ms Delay relative to video : -00:00:00.771 Video0 delay : -771 Video0 delay : -771 ms Video0 delay : -771 ms Video0 delay : -771 ms Video0 delay : -00:00:00.771 Stream size : 2307072 Stream size : 2.20 MiB (4%) Stream size : 2 MiB Stream size : 2.2 MiB Stream size : 2.20 MiB Stream size : 2.200 MiB Stream size : 2.20 MiB (4%) Proportion of this stream : 0.04225 Menu Count : 94 Count of stream of this kind : 1 Kind of stream : Menu Kind of stream : Menu Stream identifier : 0 StreamOrder : 0 ID : 1024 ID : 1024 (0x400) Menu ID : 1 Menu ID : 1 (0x1) Format : AVC / MPEG Audio Commercial name : AVC / MPEG Audio Codec : AVC / MPA1L2 Codec : AVC / MPA1L2 List_StreamKind : 1 / 2 List_StreamPos : 0 / 0 List : 1025 / 1026 List : 1025 (0x401) (AVC) / 1026 (0x402) (MPEG Audio)
RE: color artefacts on dvb-c channels, where to start troubleshooting?
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Added by Vahram Mazlumyan about 6 years ago
Hello
No idea with this problem ?
RE: color artefacts on dvb-c channels, where to start troubleshooting?
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Added by Em Smith about 6 years ago
You say frontend is on the same machine, so I'm guessing that is Kodi. I'm not sure if you can see the tvheadend logfile on the box to see if it logs any errors about overflows while recording.
I would install Kodi on a laptop, enable Kodi's tvheadend PVR (remember to change IP address in its config to whatever the backend is). Then play a recording that fails on your tv. Does it work on your laptop without artefacts? If so, it's likely to be a Kodi issue on the S912.
If it fails, then I'd connect a USB keyboard up to the S912. Play a recording on S912 and press "Ctrl-Shift-O" (IIRC) (that's the letter O) to call up detailed information on the playback such as bitrate. Does it fail only on channels with a "high" bitrate?
IME, the xbox tuner is good for the price but requires a stronger tv signal than my other tuners, and my computer tuners all require a stronger signal than my tv. So you could always try moving the box right next to your signal without the 10m cable and see if that solves anything.