> On Jan 31, 2020, at 10:18 01AM, Vladimir Sobolev <[email protected]> wrote:
> 
> I'm trying to stream to online service via FFmpeg. All my test commands works 
> fine with restream.io preview and with local rtmp server viewer. My OBS setup 
> works fine too (same resolution, server and key). Only when I'm about to 
> start ffmpeg stream from my command line it stucks after few seconds.
> 
> My test command:
> 
> ffmpeg -stream_loop -1 \
>   -i noise.mov \
>   -c:v libx264 c:a aac \
>   -f flv 'rtmps://live-upload******'
> 

may i ask what behavior you are expecting when using -stream_loop -1?


> With -debug pict after some progress with input files and rtmp handshaking I 
> can see this:
> 
> Clipping frame in rate conversion by 0.000008
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 10 times
> [h264 @ 0x7ff12001da00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 5 times
> [h264 @ 0x7ff12001e000] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 1
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 10 times
> [h264 @ 0x7ff12001e600] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 5 times
> [h264 @ 0x7ff12001ec00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 1
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 8 times
> [h264 @ 0x7ff12001ac00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 5 times
> [h264 @ 0x7ff12001da00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 1
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 5 times
> [h264 @ 0x7ff12001e000] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> [libx264 @ 0x7ff120802400] frame=   0 QP=20.00 NAL=3 Slice:I Poc:0   I:3600 
> P:0    SKIP:0    size=216266 bytes
> [h264 @ 0x7ff12001e600] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 1
> [libx264 @ 0x7ff120802400] frame=   1 QP=31.00 NAL=2 Slice:P Poc:2   I:287  
> P:3267 SKIP:46   size=48597 bytes
> [h264 @ 0x7ff12001ec00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> [libx264 @ 0x7ff120802400] frame=   2 QP=30.00 NAL=2 Slice:P Poc:4   I:710  
> P:2888 SKIP:2    size=79226 bytes
> 
> ..and that's it.
> 
> The same command works fine with any other online service except this one. 
> What I can do to debug it? Works fine with OBS, but won't with ffmpeg 
> command. noise.mov — 720×1280px mov file.
> 
> Full log:
> 
> iMac:Desktop 350d$ ffmpeg -stream_loop -1 -re -i noise.mov -c:v libx264 
> -preset ultrafast -c:a aac -f flv -debug pict 'rtmps://live-upload.*******' 
> ffmpeg version N-96521-g5e62100152-tessus  https://evermeet.cx/ffmpeg/  
> Copyright (c) 2000-2020 the FFmpeg developers
>  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
>  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg 
> --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl 
> --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d 
> --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame 
> --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb 
> --enable-libopenh264 --enable-libopenjpeg --enable-libopus 
> --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr 
> --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab 
> --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx 
> --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 
> --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq 
> --enable-libzvbi --enable-version3 --pkg-config-flags=--static 
> --disable-ffplay
>  libavutil      56. 38.100 / 56. 38.100
>  libavcodec     58. 67.100 / 58. 67.100
>  libavformat    58. 36.100 / 58. 36.100
>  libavdevice    58.  9.103 / 58.  9.103
>  libavfilter     7. 71.100 /  7. 71.100
>  libswscale      5.  6.100 /  5.  6.100
>  libswresample   3.  6.100 /  3.  6.100
>  libpostproc    55.  6.100 / 55.  6.100
> matched as AVOption 'debug' with argument 'pict'.
> Reading option 'rtmps://live-upload.************' ... matched as output url.
> Finished splitting the commandline.
> Parsing a group of options: global .
> Successfully parsed a group of options.
> Parsing a group of options: input url /Users/350d/Desktop/noise.mov.
> Applying option stream_loop (set number of times input stream shall be 
> looped) with argument -1.
> Applying option re (read input at native frame rate) with argument 1.
> Successfully parsed a group of options.
> Opening an input file: /Users/350d/Desktop/noise.mov.
> [NULL @ 0x7fb1e5000000] Opening '/Users/350d/Desktop/noise.mov' for reading
> [file @ 0x7fb1e4c01700] Setting default whitelist 'file,crypto,data'
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] Format mov,mp4,m4a,3gp,3g2,mj2 
> probed with size=2048 and score=100
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] ISO: File Type Major Brand: qt  
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] Unknown dref type 0x73696c61 size 
> 12
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] Processing st: 0, edit list 0 - 
> media time: 2112, duration: 160230
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] drop a frame at curr_cts: 0 @ 0
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] drop a frame at curr_cts: 1024 @ 1
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] skip 64 audio samples from 
> curr_cts: 2048
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] Unknown dref type 0x73696c61 size 
> 12
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] Shifting DTS by 100 because of 
> negative CTTS.
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] Processing st: 1, edit list 0 - 
> media time: 0, duration: 10900
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] stts: 0 ctts: 0, ctts_index: 0, 
> ctts_count: 109
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] stts: 100 ctts: 100, ctts_index: 
> 1, ctts_count: 109
> ....
> ....
> ....
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] stts: 10800 ctts: 0, ctts_index: 
> 108, ctts_count: 109
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] Setting codecpar->delay to 1 for 
> stream st: 1
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] Unknown dref type 0x73696c61 size 
> 12
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] Processing st: 2, edit list 0 - 
> media time: 0, duration: 10900
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] Before avformat_find_stream_info() 
> pos: 3397542 bytes read:70076 seeks:3 nb_streams:3
> [h264 @ 0x7fb1e5806a00] nal_unit_type: 7(SPS), nal_ref_idc: 1
> [h264 @ 0x7fb1e5806a00] nal_unit_type: 8(PPS), nal_ref_idc: 1
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] demuxer injecting skip 2112 / 
> discard 0
> [aac @ 0x7fb1e5010c00] skip 2112 / discard 0 samples due to side data
> [h264 @ 0x7fb1e5806a00] nal_unit_type: 6(SEI), nal_ref_idc: 0
> [h264 @ 0x7fb1e5806a00] nal_unit_type: 5(IDR), nal_ref_idc: 1
> [h264 @ 0x7fb1e5806a00] Format yuv420p chosen by get_format().
> [h264 @ 0x7fb1e5806a00] Reinit context to 720x1280, pix_fmt: yuv420p
> [h264 @ 0x7fb1e5806a00] no picture 
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] All info found
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb1e5000000] After avformat_find_stream_info() 
> pos: 200654 bytes read:270218 seeks:4 frames:45
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/350d/Desktop/noise.mov':
>  Metadata:
>    major_brand     : qt  
>    minor_version   : 0
>    compatible_brands: qt  
>    creation_time   : 2020-01-27T09:49:16.000000Z
>    com.apple.quicktime.displayname: STREAM
>    com.apple.quicktime.title: STREAM
>  Duration: 00:00:03.63, start: 0.000000, bitrate: 7480 kb/s

you mentioned it gets stuck after a few seconds.... the duration of the input 
file is 'only a few seconds'


>    Stream #0:0(und), 44, 1/44100: Audio: aac (LC) (mp4a / 0x6134706D), 44100 
> Hz, stereo, fltp, 101 kb/s (default)
>    Metadata:
>      creation_time   : 2020-01-27T09:49:16.000000Z
>      handler_name    : Core Media Audio
>    Stream #0:1(und), 1, 1/3000: Video: h264 (High), 1 reference frame (avc1 / 
> 0x31637661), yuv420p(tv, bt709, progressive, left), 720x1280 [SAR 1:1 DAR 
> 9:16], 0/1, 7328 kb/s, 30 fps, 30 tbr, 3k tbn, 6k tbc (default)
>    Metadata:
>      creation_time   : 2020-01-27T09:49:16.000000Z
>      handler_name    : Core Media Video
>      encoder         : H.264
>      timecode        : 00:00:00:00
>    Stream #0:2(und), 0, 1/3000: Data: none (tmcd / 0x64636D74), 0/1, 0 kb/s 
> (default)
>    Metadata:
>      creation_time   : 2020-01-27T09:49:16.000000Z
>      handler_name    : Core Media Time Code
>      timecode        : 00:00:00:00
> Successfully opened the file.
> Parsing a group of options: output url rtmps://live-upload.*************.
> Applying option c:v (codec name) with argument libx264.
> Applying option c:a (codec name) with argument aac.
> Applying option f (force format) with argument flv.
> Successfully parsed a group of options.
> Opening an output file: rtmps://live-upload.********************.
> [rtmps @ 0x7fb1e4c04a00] No default whitelist set
> [tls @ 0x7fb1e4c04880] No default whitelist set
> [tcp @ 0x7fb1e4c04940] No default whitelist set
> [tcp @ 0x7fb1e4c04940] Original list of addresses:
> [tcp @ 0x7fb1e4c04940] Address ***** port 443
> [tcp @ 0x7fb1e4c04940] Interleaved list of addresses:
> [tcp @ 0x7fb1e4c04940] Address ***** port 443
> [tcp @ 0x7fb1e4c04940] Starting connection attempt to ***** port 443
> [tcp @ 0x7fb1e4c04940] Successfully connected to ***** port 443
> [rtmps @ 0x7fb1e4c04a00] Handshaking...
> [rtmps @ 0x7fb1e4c04a00] Type answer 3
> [rtmps @ 0x7fb1e4c04a00] Server version 1.0.5.4
> [rtmps @ 0x7fb1e4c04a00] Proto = rtmps, path = /rtmp/**************, app = 
> rtmp, fname = *****************
> [rtmps @ 0x7fb1e4c04a00] Window acknowledgement size = 5000000
> [rtmps @ 0x7fb1e4c04a00] Max sent, unacked = 5000000
> [rtmps @ 0x7fb1e4c04a00] New incoming chunk size = 4096
> [rtmps @ 0x7fb1e4c04a00] Releasing stream...
> [rtmps @ 0x7fb1e4c04a00] FCPublish stream...
> [rtmps @ 0x7fb1e4c04a00] Creating stream...
> [rtmps @ 0x7fb1e4c04a00] Sending publish command for '********************'
> Successfully opened the file.
> detected 4 logical cores
> [h264 @ 0x7fb1e5035400] nal_unit_type: 7(SPS), nal_ref_idc: 1
> [h264 @ 0x7fb1e5035400] nal_unit_type: 8(PPS), nal_ref_idc: 1
> Stream mapping:
>  Stream #0:1 -> #0:0 (h264 (native) -> h264 (libx264))
>  Stream #0:0 -> #0:1 (aac (native) -> aac (native))
> Press [q] to stop, [?] for help
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
> [aac @ 0x7fb1e5011800] skip 2112 / discard 0 samples due to side data
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 1 times
> [aac @ 0x7fb1e5011800] skip 64/1024 samples
> [graph_1_in_0_0 @ 0x7fb1e4e05540] Setting 'time_base' to value '1/44100'
> [graph_1_in_0_0 @ 0x7fb1e4e05540] Setting 'sample_rate' to value '44100'
> [graph_1_in_0_0 @ 0x7fb1e4e05540] Setting 'sample_fmt' to value 'fltp'
> [graph_1_in_0_0 @ 0x7fb1e4e05540] Setting 'channel_layout' to value '0x3'
> [graph_1_in_0_0 @ 0x7fb1e4e05540] tb:1/44100 samplefmt:fltp samplerate:44100 
> chlayout:0x3
> [format_out_0_1 @ 0x7fb1e4e03f00] Setting 'sample_fmts' to value 'fltp'
> [format_out_0_1 @ 0x7fb1e4e03f00] Setting 'sample_rates' to value 
> '96000|88200|64000|48000|44100|32000|24000|22050|16000|12000|11025|8000|7350'
> [AVFilterGraph @ 0x7fb1e4d10940] query_formats: 4 queried, 9 merged, 0 
> already done, 0 delayed
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 197507 times
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 190577 times
> [h264 @ 0x7fb1e5035400] nal_unit_type: 6(SEI), nal_ref_idc: 0
> [h264 @ 0x7fb1e5035400] nal_unit_type: 5(IDR), nal_ref_idc: 1
> [h264 @ 0x7fb1e5035400] Format yuv420p chosen by get_format().
> [h264 @ 0x7fb1e5035400] Reinit context to 720x1280, pix_fmt: yuv420p
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 436 times
> [h264 @ 0x7fb1e5035400] no picture 
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 9068 times
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 8658 times
> [h264 @ 0x7fb1e580ae00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 1
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 8151 times
> [h264 @ 0x7fb1e5807600] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 18758 times
> [h264 @ 0x7fb1e5807c00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 1
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 8906 times
> [h264 @ 0x7fb1e5821c00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 10004 times
> [h264 @ 0x7fb1e5035400] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 1
> [graph 0 input from stream 0:1 @ 0x7fb1e4d13080] Setting 'video_size' to 
> value '720x1280'
> [graph 0 input from stream 0:1 @ 0x7fb1e4d13080] Setting 'pix_fmt' to value 
> '0'
> [graph 0 input from stream 0:1 @ 0x7fb1e4d13080] Setting 'time_base' to value 
> '1/3000'
> [graph 0 input from stream 0:1 @ 0x7fb1e4d13080] Setting 'pixel_aspect' to 
> value '1/1'
> [graph 0 input from stream 0:1 @ 0x7fb1e4d13080] Setting 'frame_rate' to 
> value '30/1'
> [graph 0 input from stream 0:1 @ 0x7fb1e4d13080] w:720 h:1280 pixfmt:yuv420p 
> tb:1/3000 fr:30/1 sar:1/1
> [format @ 0x7fb1e4d12f00] Setting 'pix_fmts' to value 
> 'yuv420p|yuvj420p|yuv422p|yuvj422p|yuv444p|yuvj444p|nv12|nv16|nv21|yuv420p10le|yuv422p10le|yuv444p10le|nv20le|gray|gray10le'
> [AVFilterGraph @ 0x7fb1e4f0a5c0] query_formats: 4 queried, 3 merged, 0 
> already done, 0 delayed
> [libx264 @ 0x7fb1e5015600] using mv_range_thread = 104
> [libx264 @ 0x7fb1e5015600] using SAR=1/1
> [libx264 @ 0x7fb1e5015600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 
> AVX FMA3 BMI2 AVX2
> [libx264 @ 0x7fb1e5015600] profile Constrained Baseline, level 3.1, 4:2:0, 
> 8-bit
> [libx264 @ 0x7fb1e5015600] 264 - core 159 r2991 1771b55 - H.264/MPEG-4 AVC 
> codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: 
> cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 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=6 lookahead_threads=1 
> sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 
> constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 
> intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 
> ip_ratio=1.40 aq=0
> [flv @ 0x7fb1e5014400] Ignoring metadata for framerate
> [flv @ 0x7fb1e5014400] Ignoring metadata for width
> [flv @ 0x7fb1e5014400] Ignoring metadata for height
> Output #0, flv, to 'rtmps://live-upload.***********************************':
>  Metadata:
>    major_brand     : qt  
>    minor_version   : 0
>    compatible_brands: qt  
>    encoder         : Lavf58.36.100
>    com.apple.quicktime.displayname: IG STREAM
>    com.apple.quicktime.title: IG STREAM
>    framerate       : 30
>    width           : 720
>    height          : 1280
>    title           : USERNAME
>    creation_time   : 2020-01-27T09:49:16.000000Z
>    Stream #0:0(und), 0, 1/1000: Video: h264 (libx264), 1 reference frame 
> ([7][0][0][0] / 0x0007), yuv420p(left), 720x1280 [SAR 1:1 DAR 9:16], 0/1, 
> q=-1--1, 30 fps, 1k tbn, 30 tbc (default)
>    Metadata:
>      creation_time   : 2020-01-27T09:49:16.000000Z
>      handler_name    : Core Media Video
>      timecode        : 00:00:00:00
>      encoder         : Lavc58.67.100 libx264
>    Side data:
>      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
>    Stream #0:1(und), 0, 1/1000: Audio: aac (LC) ([10][0][0][0] / 0x000A), 
> 44100 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
>    Metadata:
>      creation_time   : 2020-01-27T09:49:16.000000Z
>      handler_name    : Core Media Audio
>      encoder         : Lavc58.67.100 aac
> Clipping frame in rate conversion by 0.000008
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 10 times
> [h264 @ 0x7fb1e580ae00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 5 times
> [h264 @ 0x7fb1e5807600] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 1
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 10 times
> [h264 @ 0x7fb1e5807c00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 3 times
> [h264 @ 0x7fb1e5821c00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 1
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 10 times
> [h264 @ 0x7fb1e5035400] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 5 times
> [h264 @ 0x7fb1e580ae00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 1
> cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if 
> it occurs once at the start per stream)
>    Last message repeated 5 times
> [h264 @ 0x7fb1e5807600] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> [libx264 @ 0x7fb1e5015600] frame=   0 QP=20.00 NAL=3 Slice:I Poc:0   I:3600 
> P:0    SKIP:0    size=216266 bytes
> [h264 @ 0x7fb1e5807c00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 1
> [libx264 @ 0x7fb1e5015600] frame=   1 QP=31.00 NAL=2 Slice:P Poc:2   I:287  
> P:3267 SKIP:46   size=48597 bytes
> [h264 @ 0x7fb1e5821c00] nal_unit_type: 1(Coded slice of a non-IDR picture), 
> nal_ref_idc: 0
> [libx264 @ 0x7fb1e5015600] frame=   2 QP=30.00 NAL=2 Slice:P Poc:4   I:710  
> P:2888 SKIP:2    size=79226 bytes
> ^C[tls @ 0x7fb1e4c04880] IO Error: -9806
> av_interleaved_write_frame(): Input/output error
> [libx264 @ 0x7fb1e5015600] frame=   3 QP=30.00 NAL=2 Slice:P Poc:6   I:355  
> P:3245 SKIP:0    size=82386 bytes
> 
> 
> 
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