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mavrick816  
#1 Posted : Monday, April 11, 2016 6:20:55 PM(UTC)
mavrick816

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Doing some testing and noticed I started dropping frames. I've done a search and i'm not sure what this is a symptom of. Hardware? Software? Network? any suggestions?

Quick Specs:
i7 Quad CPU
Nvidia GPU
32gb RAM
CPU Utilization less than 50%
Upload Config 720p 1.5mb upload
Network Upload Max 6mb/s
[dshow @ 01e28800] real-time buffer [vMix Video] [video input] too full or near too full (62% of size: 256000000 [rtbufsize parameter])! frame dropped!


Log File

ffmpeg started on 2016-04-10 at 14:00:12
Report written to "C:\ProgramData\vMix\streaming\streaming 20160410-140012.log"
Command line:
"C:\\Program Files (x86)\\vMix\\streaming\\ffmpeg.exe" -report -rtbufsize 256M -f dshow -i "video=vMix Video:audio=vMix Audio" -codec:v libx264 -s:v 1280x720 -pix_fmt:v yuv420p -threads 4 -bufsize:v 1500k -g:v 120 -preset:v veryfast -profile:v baseline -level:v 3.1 -b:v 1500k -maxrate:v 1650k -codec:a libfaac -b:a 96k -strict -2 -rtmp_flashver "FMLE/3.0 (compatible; vMix/16.0.0.115)" -f flv rtmp://us-east.restream.io/live/re_23538_a3697a050cd71c10f990
ffmpeg version 2.8.git Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.8.1 (rev2, Built by MinGW-W64 project)
configuration: --enable-gpl --enable-version3 --enable-libx264 --enable-zlib --enable-libfaac --enable-nonfree --cpu=i686 --enable-nvenc
libavutil 55. 2.100 / 55. 2.100
libavcodec 57. 3.100 / 57. 3.100
libavformat 57. 2.100 / 57. 2.100
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 9.100 / 6. 9.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.100 / 2. 0.100
libpostproc 54. 0.100 / 54. 0.100
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, dshow, from 'video=vMix Video:audio=vMix Audio':
Duration: N/A, start: 11864.868000, bitrate: 1536 kb/s
Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 1280x1024, 60 tbr, 10000k tbn, 60 tbc
Stream #0:1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
[tcp @ 0195f320] TCP Buffer has been set to 3990528 bytes
[dshow @ 01e28800] real-time buffer [vMix Video] [video input] too full or near too full (62% of size: 256000000 [rtbufsize parameter])! frame dropped!
[dshow @ 01e28800] real-time buffer [vMix Video] [video input] too full or near too full (64% of size: 256000000 [rtbufsize parameter])! frame dropped!
[dshow @ 01e28800] real-time buffer [vMix Video] [video input] too full or near too full (66% of size: 256000000 [rtbufsize parameter])! frame dropped!
[dshow @ 01e28800] real-time buffer [vMix Video] [video input] too full or near too full (68% of size: 256000000 [rtbufsize parameter])! frame dropped!
[dshow @ 01e28800] real-time buffer [vMix Video] [video input] too full or near too full (70% of size: 256000000 [rtbufsize parameter])! frame dropped!
[dshow @ 01e28800] real-time buffer [vMix Video] [video input] too full or near too full (72% of size: 256000000 [rtbufsize parameter])! frame dropped!
[libx264 @ 01962080] MB rate (216000) > level limit (108000)
[libx264 @ 01962080] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 01962080] profile Constrained Baseline, level 3.1
[libx264 @ 01962080] 264 - core 144 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=4 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=120 keyint_min=12 scenecut=40 intra_refresh=0 rc_lookahead=10 rc=abr mbtree=1 bitrate=1500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=1650 vbv_bufsize=1500 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
[dshow @ 01e28800] real-time buffer [vMix Video] [video input] too full or near too full (74% of size: 256000000 [rtbufsize parameter])! frame dropped!
richardgatarski  
#2 Posted : Tuesday, April 12, 2016 12:04:41 PM(UTC)
richardgatarski

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Just a guess, but it might be your uplink speed that is insufficient, or the streaming server that is not keeping up.
Try lowering the streaming bitrate, and if possible from some other place/different uplink.
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