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ffmpeg Transcoding Stops After Few Seconds [migrated]

15 avril 2018, par Salem F

I’m trying to do this over week now with no success,
What’s I’m trying to do is transcoding video from live streaming source and downscale it with FFmpeg, but every time I start transcoding it broadcasting for 11 sec and stop.

The last command I tried :

ffmpeg  -re  -i 'http://source.com/1034.ts' -preset ultrafast http://localhost:2052/feed1.ffm

I tried to download the .ts file with IDM and it finish downloading the file on the exact 12 Sec that FFmpeg stop trans coding on it.

Does that means that FFmpeg download that file as one segment and not continued reading the source video As what video players does usually. By the way, I tried with source with VLC player and it didn’t stop playing the the same source video.

I decided to pass FFmpeg command via FFserver config file ffserver.conf

Launch ffmpeg -i 'http://source.com/1.ts' -copyinkf -codec copy

The stream works fine for a while but after testing couple sources I notice it’s struggle to trans-coding HD videos.

I guess the issue with my VPS KVM server being very limited CPU and RAM ( 128MB only) ! Since I tried using ultrafast preset but din’t solve the issue, another thing, I notice when I enable AVOptionVideo crf setting on ffserver.conf trans-coding runs bit smoothly without frame-rate dropping.
Las my server uses Xeon L5520 CPU which is outdated CPU specially I gout 1/4 power of V single core (if they count HT it will be 1/8 of the real core) : (

# vlc -I dummy 'https://source.com/1034.ts' --sout '#standard{access=http,mux=flv,dst=localhost:2052}'

VLC media player 2.2.8 Weatherwax (revision 2.2.7-14-g3cc1d8cba9)

[09d3fdf0] pulse audio output error: PulseAudio server connection failure: Connection refused

[09d279c0] core interface error: no suitable interface module

[09c9b8f8] core libvlc error: interface "globalhotkeys,none" initialization failed

[09d279c0] dbus interface error: Failed to connect to the D-Bus session daemon: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11

[09d279c0] core interface error: no suitable interface module

[09c9b8f8] core libvlc error: interface "dbus,none" initialization failed

[09d279c0] dummy interface: using the dummy interface module...

[b5e04ae0] access_output_http access out: Consider passing --http-host=IP on the command line instead.

[b5e38ab8] ts demux: MPEG-4 descriptor not found for pid 0x101 type 0xf

[b5e90ae0] packetizer_mpeg4audio decoder: AAC channels: 2 samplerate: 48000

[flv @ 0xb5e33b40] dimensions not set

[b5e06360] avformat mux error: could not write header: Invalid argument

[b5e88ef0] core decoder error: cannot continue streaming due to errors

[b5e90ae0] core decoder error: cannot continue streaming due to errors

Here output with -loglevel verbose

:~# ffmpeg -i http://source.com/1.ts -copyinkf -codec copy  -loglevel verbose  http://127.0.0.1:8090/feed1.ffm

ffmpeg version 2.6.9 Copyright (c) 2000-2016 the FFmpeg developers

  built with gcc 4.9.2 (Debian 4.9.2-10)

  configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/i386-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --disable-htmlpages --disable-podpages --enable-libutvideo --enable-libfdk-aac --enable-libx265 --enable-libiec61883 --enable-vaapi --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/i386-linux-gnu

  libavutil      54. 20.100 / 54. 20.100

  libavcodec     56. 26.100 / 56. 26.100

  libavformat    56. 25.101 / 56. 25.101

  libavdevice    56.  4.100 / 56.  4.100

  libavfilter     5. 11.102 /  5. 11.102

  libavresample   2.  1.  0 /  2.  1.  0

  libswscale      3.  1.101 /  3.  1.101

  libswresample   1.  1.100 /  1.  1.100

  libpostproc    53.  3.100 / 53.  3.100

Invalid UE golomb code

    Last message repeated 2 times

Input #0, mpegts, from 'http://source.com/1.ts':

  Duration: N/A, start: 30472.768167, bitrate: N/A

  Program 1

    Metadata:

      service_name    : Service01

      service_provider: FFmpeg

    Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 960x540 (960x544) [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc

    Stream #0:1[0x101]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 105 kb/s

[graph 0 input from stream 0:1 @ 0x971f2c0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3

[audio format for output stream 0:0 @ 0x9844de0] auto-inserting filter 'auto-inserted resampler 0' between the filter 'Parsed_anull_0' and the filter 'audio format for output stream 0:0'

[auto-inserted resampler 0 @ 0x97115e0] ch:2 chl:stereo fmt:fltp r:48000Hz -> ch:1 chl:mono fmt:fltp r:22050Hz

[graph 1 input from stream 0:0 @ 0x96f5d00] w:960 h:540 pixfmt:yuv420p tb:1/90000 fr:50/1 sar:1/1 sws_param:flags=2

[scaler for output stream 0:1 @ 0x96f5e80] w:352 h:240 flags:'0x4' interl:0

[scaler for output stream 0:1 @ 0x96f5e80] w:960 h:540 fmt:yuv420p sar:1/1 -> w:352 h:240 fmt:yuv420p sar:40/33 flags:0x4

Output #0, ffm, to 'http://127.0.0.1:8090/feed1.ffm':

  Metadata:

    creation_time   : now

    encoder         : Lavf56.25.101

    Stream #0:0: Audio: wmav2, 22050 Hz, mono, fltp, 64 kb/s

    Metadata:

      encoder         : Lavc56.26.100 wmav2

    Stream #0:1: Video: msmpeg4v3 (msmpeg4), yuv420p, 352x240 [SAR 40:33 DAR 16:9], q=2-31, 256 kb/s, 50 fps, 1000k tbn, 15 tbc

    Metadata:

      encoder         : Lavc56.26.100 msmpeg4

Stream mapping:

  Stream #0:1 -> #0:0 (aac (native) -> wmav2 (native))

  Stream #0:0 -> #0:1 (h264 (native) -> msmpeg4v3 (msmpeg4))

Press [q] to stop, [?] for help

Invalid UE golomb code

*** dropping frame 3 from stream 1 at ts 1

    Last message repeated 1 times

[msmpeg4 @ 0x970f060] warning, clipping 1 dct coefficients to -127..127

*** dropping frame 4 from stream 1 at ts 2

    Last message repeated 1 times

*** dropping frame 5 from stream 1 at ts 3

    Last message repeated 1 times

*** dropping frame 5 from stream 1 at ts 4

*** dropping frame 6 from stream 1 at ts 4

    Last message repeated 1 times

*** dropping frame 7 from stream 1 at ts 5

    Last message repeated 1 times

[msmpeg4 @ 0x970f060] warning, clipping 1 dct coefficients to -127..127

*** dropping frame 8 from stream 1 at ts 6

    Last message repeated 1 times

*** dropping frame 8 from stream 1 at ts 7

*** dropping frame 9 from stream 1 at ts 7

    Last message repeated 1 times

*** dropping frame 10 from stream 1 at ts 8

    Last message repeated 1 times

*** dropping frame 11 from stream 1 at ts 9

    Last message repeated 1 times

*** dropping frame 11 from stream 1 at ts 10

*** dropping frame 12 from stream 1 at ts 10

    Last message repeated 1 times

*** dropping frame 13 from stream 1 at ts 11

    Last message repeated 1 times

*** dropping frame 14 from stream 1 at ts 12

    Last message repeated 1 times

*** dropping frame 14 from stream 1 at ts 13

*** dropping frame 15 from stream 1 at ts 13

    Last message repeated 1 times

*** dropping frame 16 from stream 1 at ts 14

    Last message repeated 1 times

*** dropping frame 17 from stream 1 at ts 15

    Last message repeated 1 times

*** dropping frame 17 from stream 1 at ts 16

*** dropping frame 18 from stream 1 at ts 16

    Last message repeated 1 times

*** dropping frame 19 from stream 1 at ts 17

    Last message repeated 1 times

*** dropping frame 20 from stream 1 at ts 18me=00:00:01.33 bitrate= 270.3kbits/s dup=0 drop=39

    Last message repeated 1 times

*** dropping frame 20 from stream 1 at ts 19

*** dropping frame 21 from stream 1 at ts 19

    Last message repeated 1 times

*** dropping frame 22 from stream 1 at ts 20

    Last message repeated 1 times

*** dropping frame 23 from stream 1 at ts 21

    Last message repeated 1 times

*** dropping frame 23 from stream 1 at ts 22

*** dropping frame 24 from stream 1 at ts 22

    Last message repeated 1 times

*** dropping frame 25 from stream 1 at ts 23

    Last message repeated 1 times

*** dropping frame 26 from stream 1 at ts 24

    Last message repeated 1 times

*** dropping frame 26 from stream 1 at ts 25

*** dropping frame 27 from stream 1 at ts 25

    Last message repeated 1 times

*** dropping frame 28 from stream 1 at ts 26

    Last message repeated 1 times

*** dropping frame 29 from stream 1 at ts 27

    Last message repeated 1 times

*** dropping frame 29 from stream 1 at ts 28

*** dropping frame 30 from stream 1 at ts 28

    Last message repeated 1 times

*** dropping frame 31 from stream 1 at ts 29

    Last message repeated 1 times

*** dropping frame 32 from stream 1 at ts 30

    Last message repeated 1 times

*** dropping frame 32 from stream 1 at ts 31

*** dropping frame 33 from stream 1 at ts 31

    Last message repeated 1 times

*** dropping frame 34 from stream 1 at ts 32

    Last message repeated 1 times

*** dropping frame 34 from stream 1 at ts 33

*** dropping frame 35 from stream 1 at ts 33

*** dropping frame 35 from stream 1 at ts 34

*** dropping frame 36 from stream 1 at ts 34

    Last message repeated 1 times

*** dropping frame 37 from stream 1 at ts 35

    Last message repeated 1 times

Invalid UE golomb code

*** dropping frame 38 from stream 1 at ts 36

    Last message repeated 1 times

*** dropping frame 38 from stream 1 at ts 37

*** dropping frame 39 from stream 1 at ts 37

    Last message repeated 1 times

*** dropping frame 40 from stream 1 at ts 38

    Last message repeated 1 times

*** dropping frame 41 from stream 1 at ts 39me=00:00:02.73 bitrate= 311.7kbits/s dup=0 drop=88

    Last message repeated 1 times

*** dropping frame 41 from stream 1 at ts 40

*** dropping frame 42 from stream 1 at ts 40

    Last message repeated 1 times

*** dropping frame 43 from stream 1 at ts 41

    Last message repeated 1 times

*** dropping frame 44 from stream 1 at ts 42

    Last message repeated 1 times

*** dropping frame 44 from stream 1 at ts 43

*** dropping frame 45 from stream 1 at ts 43

    Last message repeated 1 times

*** dropping frame 46 from stream 1 at ts 44

    Last message repeated 1 times

*** dropping frame 47 from stream 1 at ts 45

    Last message repeated 1 times

*** dropping frame 47 from stream 1 at ts 46

*** dropping frame 48 from stream 1 at ts 46

    Last message repeated 1 times

*** dropping frame 49 from stream 1 at ts 47

    Last message repeated 1 times

*** dropping frame 50 from stream 1 at ts 48

    Last message repeated 1 times

*** dropping frame 50 from stream 1 at ts 49

*** dropping frame 51 from stream 1 at ts 49

    Last message repeated 1 times

*** dropping frame 52 from stream 1 at ts 50

    Last message repeated 1 times

*** dropping frame 53 from stream 1 at ts 51

    Last message repeated 1 times

[h264 @ 0x9844a00] error while decoding MB 58 12, bytestream -5

[h264 @ 0x9844a00] concealing 1311 DC, 1311 AC, 1311 MV errors in B frame

*** dropping frame 53 from stream 1 at ts 52

No more output streams to write to, finishing.

frame=   55 fps= 42 q=4.3 Lsize=     152kB time=00:00:03.66 bitrate= 339.6kbits/s dup=0 drop=119

video:116kB audio:26kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 6.760316%

Input file #0 (http://source.com/1.ts):

  Input stream #0:0 (video): 174 packets read (220322 bytes); 174 frames decoded;

  Input stream #0:1 (audio): 156 packets read (36657 bytes); 156 frames decoded (159744 samples);

  Total: 330 packets (256979 bytes) demuxed

Output file #0 (http://127.0.0.1:8090/feed1.ffm):

  Output stream #0:0 (audio): 72 frames encoded (73383 samples); 72 packets muxed (26712 bytes);

  Output stream #0:1 (video): 55 frames encoded; 55 packets muxed (119080 bytes);

  Total: 127 packets (145792 bytes) muxed

Here input URL file info After I download it to my PC with IDM

General

ID                             : 1 (0x1)

Complete name                  : D:\1.ts

Format                         : MPEG-TS

File size                      : 256 KiB

Duration                       : 2 s 520 ms

Overall bit rate mode          : Variable

Overall bit rate               : 788 kb/s



Video

ID                             : 256 (0x100)

Menu ID                        : 1 (0x1)

Format                         : AVC

Format/Info                    : Advanced Video Codec

Format profile                 : High@L3.1

Format settings, CABAC         : Yes

Format settings, RefFrames     : 2 frames

Codec ID                       : 27

Duration                       : 2 s 680 ms

Width                          : 960 pixels

Height                         : 540 pixels

Display aspect ratio           : 16:9

Frame rate                     : 50.000 FPS

Color space                    : YUV

Chroma subsampling             : 4:2:0

Bit depth                      : 8 bits

Scan type                      : Progressive



Audio

ID                             : 257 (0x101)

Menu ID                        : 1 (0x1)

Format                         : AAC

Format/Info                    : Advanced Audio Codec

Format version                 : Version 4

Format profile                 : LC

Muxing mode                    : ADTS

Codec ID                       : 15

Duration                       : 2 s 69 ms

Bit rate mode                  : Variable

Channel(s)                     : 2 channels

Channel positions              : Front: L R

Sampling rate                  : 48.0 kHz

Frame rate                     : 46.875 FPS (1024 SPF)

Compression mode               : Lossy

Delay relative to video        : -12 ms



Menu

ID                             : 4096 (0x1000)

Menu ID                        : 1 (0x1)

Duration                       : 2 s 520 ms

List                           : 256 (0x100) (AVC) / 257 (0x101) (AAC)

Service name                   : Service01

Service provider               : FFmpeg

Service type                   : digital television

FFMpeg Concat Error - What needs to be changed ?

19 avril 2018, par Andrew Baldinger

I have a tv episode video (let’s say episode.mp4). I also have a short, 20 second closing credit video that I want to append to various episodes (let’s say closing.mp4) The episode and closing are always Mp4, h264. The frame sizes are also the same. The audio codecs do vary, though. I would like to concat using concat demuxer to avoid having to re-encode. I tried doing this, but it gives me an error. I would like to make any necessary encoding changes to the short closing clip (so I would create multiple closing files, each matching the main episode file I want to add it to). What do I need to additionally make sure matches with the two videos to be able to use concat demuxer ? How would I edit the closing clip to match the episode ?

Here is a probe of the ending clip :

    [STREAM]

index=0

codec_name=h264

codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10

profile=High

codec_type=video

codec_time_base=1001/48000

codec_tag_string=avc1

codec_tag=0x31637661

width=1280

height=720

coded_width=1280

coded_height=720

has_b_frames=2

sample_aspect_ratio=1:1

display_aspect_ratio=16:9

pix_fmt=yuv420p

level=31

color_range=unknown

color_space=unknown

color_transfer=unknown

color_primaries=unknown

chroma_location=left

field_order=unknown

timecode=N/A

refs=1

is_avc=true

nal_length_size=4

id=N/A

r_frame_rate=24000/1001

avg_frame_rate=24000/1001

time_base=1/24000

start_pts=0

start_time=0.000000

duration_ts=672672

duration=28.028000

bit_rate=442973

max_bit_rate=N/A

bits_per_raw_sample=8

nb_frames=672

nb_read_frames=N/A

nb_read_packets=N/A

DISPOSITION:default=1

DISPOSITION:dub=0

DISPOSITION:original=0

DISPOSITION:comment=0

DISPOSITION:lyrics=0

DISPOSITION:karaoke=0

DISPOSITION:forced=0

DISPOSITION:hearing_impaired=0

DISPOSITION:visual_impaired=0

DISPOSITION:clean_effects=0

DISPOSITION:attached_pic=0

DISPOSITION:timed_thumbnails=0

TAG:language=eng

TAG:handler_name=VideoHandler

[/STREAM]

[STREAM]

index=1

codec_name=aac

codec_long_name=AAC (Advanced Audio Coding)

profile=LC

codec_type=audio

codec_time_base=1/48000

codec_tag_string=mp4a

codec_tag=0x6134706d

sample_fmt=fltp

sample_rate=48000

channels=2

channel_layout=stereo

bits_per_sample=0

id=N/A

r_frame_rate=0/0

avg_frame_rate=0/0

time_base=1/48000

start_pts=0

start_time=0.000000

duration_ts=1344000

duration=28.000000

bit_rate=128651

max_bit_rate=128651

bits_per_raw_sample=N/A

nb_frames=1314

nb_read_frames=N/A

nb_read_packets=N/A

Here is a probe of a sample episode :

[STREAM]

index=0

codec_name=h264

codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10

profile=High

codec_type=video

codec_time_base=208879/10016000

codec_tag_string=avc1

codec_tag=0x31637661

width=1280

height=718

coded_width=1280

coded_height=718

has_b_frames=2

sample_aspect_ratio=1:1

display_aspect_ratio=640:359

pix_fmt=yuv420p

level=31

color_range=unknown

color_space=unknown

color_transfer=unknown

color_primaries=unknown

chroma_location=left

field_order=unknown

timecode=N/A

refs=1

is_avc=true

nal_length_size=4

id=N/A

r_frame_rate=24000/1001

avg_frame_rate=5008000/208879

time_base=1/16000

start_pts=0

start_time=0.000000

duration_ts=40104768

duration=2506.548000

bit_rate=1092383

max_bit_rate=N/A

bits_per_raw_sample=8

nb_frames=60096

nb_read_frames=N/A

nb_read_packets=N/A

DISPOSITION:default=1

DISPOSITION:dub=0

DISPOSITION:original=0

DISPOSITION:comment=0

DISPOSITION:lyrics=0

DISPOSITION:karaoke=0

DISPOSITION:forced=0

DISPOSITION:hearing_impaired=0

DISPOSITION:visual_impaired=0

DISPOSITION:clean_effects=0

DISPOSITION:attached_pic=0

DISPOSITION:timed_thumbnails=0

TAG:language=und

TAG:handler_name=VideoHandler

[/STREAM]

[STREAM]

index=1

codec_name=ac3

codec_long_name=ATSC A/52A (AC-3)

profile=unknown

codec_type=audio

codec_time_base=1/48000

codec_tag_string=ac-3

codec_tag=0x332d6361

sample_fmt=fltp

sample_rate=48000

channels=2

channel_layout=stereo

bits_per_sample=0

dmix_mode=-1

ltrt_cmixlev=-1.000000

ltrt_surmixlev=-1.000000

loro_cmixlev=-1.000000

loro_surmixlev=-1.000000

id=N/A

r_frame_rate=0/0

avg_frame_rate=0/0

time_base=1/48000

start_pts=0

start_time=0.000000

duration_ts=120313200

duration=2506.525000

bit_rate=192000

max_bit_rate=N/A

bits_per_raw_sample=N/A

nb_frames=78329

nb_read_frames=N/A

nb_read_packets=N/A

Finally, I am running Windows 10 and here is a probe on my setup :

ffprobe version N-87327-g18821e3 Copyright (c) 2007-2017 the FFmpeg developers

  built with gcc 7.2.0 (GCC)

  configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib

  libavutil      55. 75.100 / 55. 75.100

  libavcodec     57.106.101 / 57.106.101

  libavformat    57. 82.100 / 57. 82.100

  libavdevice    57.  8.101 / 57.  8.101

  libavfilter     6.105.100 /  6.105.100

  libswscale      4.  7.103 /  4.  7.103

  libswresample   2.  8.100 /  2.  8.100

  libpostproc    54.  6.100 / 54.  6.100

I created a version of the ending with the same screen size and audio codec as the episode. But, when I try to concat, the resulting video is much longer (1:03:00) than it should be (about 42 mins), and it freezes when played. Here is the concat :

ffmpeg -f concat -safe 0 -i "concat.txt" -c copy 's04e06.mp4'

ffmpeg : ffmpeg version N-87327-g18821e3 Copyright (c) 2000-2017 the FFmpeg developers

At line:1 char:1

+ ffmpeg -f concat -safe 0 -i "concat.txt"  ...

+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (ffmpeg version ...mpeg developers:String) [], RemoteException

    + FullyQualifiedErrorId : NativeCommandError



  built with gcc 7.2.0 (GCC)

  configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 

--enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r 

--enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca 

--enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame 

--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus 

--enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame 

--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack 

--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libxml2 

--enable-libzimg --enable-lzma --enable-zlib

  libavutil      55. 75.100 / 55. 75.100

  libavcodec     57.106.101 / 57.106.101

  libavformat    57. 82.100 / 57. 82.100

  libavdevice    57.  8.101 / 57.  8.101

  libavfilter     6.105.100 /  6.105.100

  libswscale      4.  7.103 /  4.  7.103

  libswresample   2.  8.100 /  2.  8.100

  libpostproc    54.  6.100 / 54.  6.100

[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000047cb020]

 Auto-inserting h264_mp4toannexb bitstream filter

Input #0, concat, from 'concat.txt':

  Duration: N/A, start: -0.002333, bitrate: 1284 kb/s

    Stream #0:

0(und

): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x718 [SAR 1:1 DAR 640:359], 1092 kb/s

, 

23.98 fps, 

23.98 tbr, 

16k tbn, 47.95 tb

c

    Metadata:

      handler_name    : 

VideoHandler

    Stream #0:

1(und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, stereo, fltp, 192 kb/s

    Metadata:

      handler_name    : 

SoundHandler

[mp4 @ 0000000004daf380]



track 1: codec frame size is not set

Output #0, mp4, to 's04e06.mp4':

  Metadata:

    encoder         : 

Lavf57.82.10

0

    Stream #0:

0

(und)

: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x718 [SAR 1:1 DAR 640:359], q=2-31, 1092 kb/s

, 

23.98 fps, 23.98 tbr,

 16k tbn, 

16k tbc

    Metadata:

      handler_name    : VideoHandler

    Stream #0:1(und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, stereo, fltp, 192 kb/s

    Metadata:

      handler_name    : SoundHandler

Stream mapping:

  Stream #0:0 -> #0:0 (copy)

  Stream #0:1 -> #0:1 (copy)

Press [q] to stop, [?] for help

frame= 3050 fps=0.0 q=-1.0 size=   32768kB time=00:02:07.16 bitrate=2110.9kbits/s speed= 254x    

frame= 7005 fps=6993 q=-1.0 size=   65536kB time=00:04:52.12 bitrate=1837.8kbits/s speed= 292x    

frame=12638 fps=8414 q=-1.0 size=   99072kB time=00:08:47.04 bitrate=1539.9kbits/s speed= 351x    

frame=17009 fps=8492 q=-1.0 size=  125440kB time=00:11:49.34 bitrate=1448.7kbits/s speed= 354x    

frame=18981 fps=7413 q=-1.0 size=  136704kB time=00:13:11.61 bitrate=1414.7kbits/s speed= 309x    

frame=20233 fps=6444 q=-1.0 size=  144896kB time=00:14:03.80 bitrate=1406.7kbits/s speed= 269x    

frame=23615 fps=6421 q=-1.0 size=  165888kB time=00:16:24.89 bitrate=1379.8kbits/s speed= 268x    

frame=25322 fps=6057 q=-1.0 size=  175360kB time=00:17:36.06 bitrate=1360.3kbits/s speed= 253x    

frame=26957 fps=5759 q=-1.0 size=  184576kB time=00:18:44.25 bitrate=1344.9kbits/s speed= 240x    

frame=31478 fps=6076 q=-1.0 size=  215040kB time=00:21:52.83 bitrate=1341.8kbits/s speed= 253x    

frame=33517 fps=5900 q=-1.0 size=  235264kB time=00:23:17.88 bitrate=1378.7kbits/s speed= 246x    

frame=34974 fps=5658 q=-1.0 size=  246272kB time=00:24:18.65 bitrate=1383.1kbits/s speed= 236x    

frame=36987 fps=5437 q=-1.0 size=  259840kB time=00:25:42.59 bitrate=1379.9kbits/s speed= 227x    

frame=37543 fps=5140 q=-1.0 size=  263168kB time=00:26:05.79 bitrate=1376.9kbits/s speed= 214x    

frame=39203 fps=4982 q=-1.0 size=  273152kB time=00:27:15.04 bitrate=1368.6kbits/s speed= 208x    

frame=45904 fps=5484 q=-1.0 size=  305408kB time=00:31:54.52 bitrate=1306.8kbits/s speed= 229x    

frame=47996 fps=5410 q=-1.0 size=  318720kB time=00:33:21.75 bitrate=1304.3kbits/s speed= 226x    

frame=50719 fps=5409 q=-1.0 size=  336128kB time=00:35:15.32 bitrate=1301.7kbits/s speed= 226x    

frame=53508 fps=5409 q=-1.0 size=  354560kB time=00:37:11.65 bitrate=1301.5kbits/s speed= 226x    

frame=57118 fps=5452 q=-1.0 size=  372736kB time=00:39:42.24 bitrate=1281.8kbits/s speed= 227x    

frame=58440 fps=5324 q=-1.0 size=  382208kB time=00:40:37.35 bitrate=1284.6kbits/s speed= 222x    

[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000047d3640]

 Auto-inserting h264_mp4toannexb bitstream filter

frame=60098 fps=5228 q=-1.0 size=  392960kB time=01:02:39.76 bitrate= 856.2kbits/s speed= 327x    

frame=60746 fps=5031 q=-1.0 size=  393472kB time=01:03:20.30 bitrate= 848.2kbits/s speed= 315x    

frame=60768 fps=4978 q=-1.0 Lsize=  397136kB time=01:03:21.67 bitrate= 855.8kbits/s speed= 311x    

video:335753kB audio:59186kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.556209%

How to not process any personal data with Matomo and what it means for you

22 avril 2018, par InnoCraft
Disclaimer : this blog post has been written by digital analysts, not lawyers. The purpose of this article is to explain how to not process any personal data with Matomo in order to avoid going through the GDPR compliance process with Matomo analytics. This work comes from our interpretation of different sources : the official GDPR text and the UK privacy commission : ICO resources. It cannot be considered as a professional legal advice. So as GDPR, this information is subject to change. GDPR may be also known as RGPD in French, Spanish, Portuguese, Datenschutz-Grundverordnung, DS-GVO in German, Algemene verordening gegevensbescherming in Dutch, Regolamento generale sulla protezione dei dati in Italian.

Are you looking for a way to not process any personal data with Matomo ? If the answer is yes, you are at the right place. From our understanding, if you are not processing personal data, then you shouldn’t be concerned about GDPR. Our inspiration came from this official reference :

“The principles of data protection should therefore not apply to anonymous information, namely information which does not relate to an identified or identifiable natural person or to personal data rendered anonymous in such a manner that the data subject is not or no longer identifiable. This Regulation does not therefore concern the processing of such anonymous information, including for statistical or research purposes.“

In this blog post we are going to see how you can configure Matomo in order to not process any personal data and what the consequences are.

Which data is considered as personal according to GDPR ?

From : eur-lex.europa.eu

(1) “‘personal data’ means any information relating to an identified or identifiable natural person (‘data subject’) ; an identifiable natural person is one who can be identified, directly or indirectly, in particular by reference to an identifier such as a name, an identification number, location data, an online identifier or to one or more factors specific to the physical, physiological, genetic, mental, economic, cultural or social identity of that natural person ;”

(30) “Natural persons may be associated with online identifiers provided by their devices, applications, tools and protocols, such as internet protocol addresses, cookie identifiers or other identifiers such as radio frequency identification tags. This may leave traces which, in particular when combined with unique identifiers and other information received by the servers, may be used to create profiles of the natural persons and identify them.”

So according to your Matomo configuration, it may leave some traces within the following data :
Let’s see each of them in more detail.

1. IP addresses

IP addresses can indirectly identify an individual. It can also give a good approximation of an individual’s location.

IP addresses are therefore considered as personal data which means you need to anonymize them. To do so, a feature is available within Matomo, where you can anonymize the IP. We recommend you to anonymize at least the last two bytes :

See our configuration guide for more information

What are the consequences of using this feature ?

When applying IP anonymization on two bytes, you will no longer be able to see the full IP in the UI.

Moreover, there is a small chance that 2 different visitors with the same device and software configuration will be identified as the same visitor if the anonymised IP address is the same for both.

2. Cookies

It is not clear for us yet if all cookies are considered equal under GDPR. At this stage it is too early to make a definite decision.

Did you know ? Matomo lets you optionally disable the creation of cookies by adding an extra line of code to your tracking code see below.

See our configuration guide for more information

What are the consequences of using this feature ?

Matomo is using a few first party cookies, and the following cookies may hold personal data :
- _pk_id : contains a visitor id used to identify unique visitors
- _pk_ref : to identify from where they came from
If Matomo cannot set cookies, it will use a technique called Fingerprint. It is based on several metadata such as the operating system, browser, browser plugins, IP address, browser language ; just to name a few to identify a unique visitor. As this feature is less accurate than the one using cookies, the number of visitors and visits will be affected.

3. Page URLs and page titles

URLs are not mentioned within the official GDPR text. However, we know that according to the different CMS you use, some of them may have URLs including personal identifiers.

For example :

As a result, you need to find a way to anonymize this data.

There are several ways you can perform this action according to your website. If your website is adding the personal data through query parameters, you can define a rule to exclude them from Matomo.

If the personal data are not included within query parameters, you can use the “setCustomURL” feature and write your code as follow :

See our developer documentation for more information

If you are also processing personal data within the title tag, you can use the following function : “setDocumentTitle”.

What are the consequences of using this feature ?

By anonymizing the URLs containing personal data, some of your URLs will be grouped together.

4. User ID and custom personal data

User ID is a feature (a tracking code needs to be added) which allows you to identify the same user across different devices.

A User ID needs a corresponding database in order to link a user across different devices, it can be an email, a username, a name, a random number… All those data are either direct or non direct online identifiers and are therefore under the scope of GDPR.

It will be the same situation if you are using custom variables and/or custom dimensions in order to push personal data to the system.

To continue using the User ID feature but not recording personal data, you can consider using a hash function which will anonymize/convert your actual User ID into something like “3jrj3j34434834urj33j3”.

Alternatively, you can enable the feature “Anonymise User IDs”. This feature will be available starting in Matomo 3.5.0 :

What are the consequences of using this feature ?

Under GDPR, User ID is personal data. Anonymizing the User ID using a hash function or our built-in functionality make the User Id pseudo-anonymous, which means it can’t be easily identified to a specific user. As a result, you will still get accurate visits and unique visitors metrics, and the Visitor Profile, but without tracking the original User ID which is personal data.

5. Ecommerce order IDs

Order IDs are the reference number assigned to the products/services bought by your customers. As this information can be crossed with your internal database, it is considered as an online identifier and is therefore under the scope of GDPR. As for User ID, you can anonymize order IDs using our built-in functionality to Anonymise Order IDs (see section 4. about User Id).

What are the consequences of anonymizing order ID ?

It really depends on your former use of order IDs. If you were not using them in the past then you should not see any difference.

6. Location

Based on the IP address of a visitor, Matomo can detect the visitors location. Location data is problematic for privacy as this technology has become quite accurate and can detect not only the city a visitor is from, but sometimes an even more precise position of a visitor.

In order to not leave any accurate traces, we strongly recommend you to enable the IP anonymization feature. Next, you need to enable the setting “Also use the anonymized IP address when enriching visits”. You find this setting directly below the IP anonymization. This is important as otherwise the full IP address will be used to geolocate a visitor.

What are the consequences of anonymizing location data ?

The more bytes you anonymize from the IP, the more anonymized your location will be. When you remove two bytes as suggested, the city and region location reports will not be as accurate. In some cases even the country may not be detected correctly anymore.

7. Heatmaps & Session Recordings

Heatmaps & Session Recording is a premium feature in Matomo allowing you to see where users click, hover, type and scroll. With session recordings you can then replay their actions in a video.

Heatmaps & Session Recordings are under the scope of GDPR as they can disclose in some specific cases (for example : filling a contact form) personal data :

To avoid this, Matomo will anonymize all keystrokes which a user enters into a form field unless you specifically whitelist a field. Many fields that could contain personal data, such as a credit card, phone number, email address, password, social security number, and more are always anonymized and not recorded.

See our configuration guide for more information

Note that a page may still show personal information within the page as part of regular content (not a form element). For example an address, or the profile page of a forum user. We have added a feature which allows you to set an HTML attribute “data-matomo-mask” to anonymize any personal content shown in the UI.

What are the consequences of using this feature ?

Mainly, you will not be able to see in plain text what people are entering into your forms.

What should you do with past data ?

Once more, we have to say that we are not lawyers. So do not take our answers as legal advice. From : ec.europa.eu/newsroom/article29/document.cfm ?doc_id=50053

“For example, as the GDPR requires that a controller must be able to demonstrate that valid consent was obtained, all presumed consents of which no references are kept will automatically be below the consent standard of the GDPR and will need to be renewed.”

Our interpretation is that, if you were previously relying on consent, unless you can demonstrate that valid consent was obtained, you need to get the consent back (which is almost impossible) or you need to anonymize or remove that data.

To anonymize previously tracked data, we are actively working on a feature to do just that directly within Matomo. Alternatively, you may also set up the deletion of logs after a certain amount of time.

We really hope you enjoyed reading this article. GDPR is still on the go and we are pretty sure you have a lot of questions about it. You probably would like to share our vision about it. So do not hesitate to ask us through our contact form to see how we are interpreting GDPR at Matomo and InnoCraft.

The post How to not process any personal data with Matomo and what it means for you appeared first on Analytics Platform - Matomo.