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How to complete your privacy policy with Matomo analytics under GDPR
25 avril 2018, par InnoCraftImportant note : this blog post has been written by digital analysts, not lawyers. The purpose of this article is to show you how to complete your existing privacy policy by adding the parts related to Matomo in order to comply with GDPR. This work comes from our interpretation of the UK privacy commission : ICO. It cannot be considered as professional legal advice. So as GDPR, this information is subject to change. We strongly advise you to have a look at the different privacy authorities in order to have up to date information. This blog post contains public sector information licensed under the Open Government Licence v3.0.
Neither the GDPR official text or ICO are mentioning the words ‘privacy policy’. They use the words ‘privacy notice’ instead. As explained within our previous blog post about “How to write a privacy notice for Matomo”, the key concepts of privacy information are transparency and accessibility which are making the privacy notice very long.
As a result, we prefer splitting the privacy notice into two parts :
- Privacy notice : straight to the point information about how personal data is processed at the time of the data collection. This is the subject of the our previous blog post.
- Privacy policy : a web page explaining in detail all the personal data you are processing and how visitors/users can exercise their rights. This is the blog post you are reading.
Writing/updating your privacy policy page can be one of the most challenging task under GDPR.
In order to make this mission less complicated, we have designed a template which you can use to complete the privacy policy part that concerns Matomo.
Which information should your privacy policy include ?
ICO is giving a clear checklist about what a privacy policy has to contain when the data is obtained from the data subject :
- Identity and contact details of the controller and where applicable, the controller’s representative and the data protection officer.
- Purpose of the processing and the legal basis for the processing.
- The legitimate interests of the controller or third party, where applicable.
- Any recipient or categories of recipients of the personal data.
- Details of transfers to third country and safeguards.
- Retention period or criteria used to determine the retention period.
- The existence of each of data subject’s rights.
- The right to withdraw consent at any time, where relevant.
- The right to lodge a complaint with a supervisory authority.
- Whether the provision of personal data part of a statutory or contractual requirement or obligation and possible consequences of failing to provide the personal data.
- The existence of automated decision-making, including profiling and information about how decisions are made, the significance and the consequences.
So in order to use Matomo with due respect to GDPR you need to answer each of those points within your privacy policy.
Matomo’s privacy policy template
You will find below some examples to each point requested by GDPR. Those answers are just guidelines, they are not perfect, feel free to copy/paste them according to your needs.
Note that this template needs to be tweaked according to the lawful basis you choose.
1 – About Matomo
Note : this part should describe the data controller instead, which is your company. But as you may already have included this part within your existing privacy policy, we prefer here to introduce what is Matomo.
Matomo is an open source web analytics platform. A web analytics platform is used by a website owner in order to measure, collect, analyse and report visitors data for purposes of understanding and optimizing their website. If you would like to see what Matomo looks like, you can access a demo version at : https://demo.matomo.org.
2 – Purpose of the processing
Matomo is used to analyse the behaviour of the website visitors to identify potential pitfalls ; not found pages, search engine indexing issues, which contents are the most appreciated… Once the data is processed (number of visitors reaching a not found pages, viewing only one page…), Matomo is generating reports for website owners to take action, for example changing the layout of the pages, publishing some fresh content… etc.
Matomo is processing the following personal data :
Pick up the one you are using :
- Cookies
- IP address
- User ID
- Custom Dimensions
- Custom Variables
- Order ID
- Location of the user
And also :
- Date and time
- Title of the page being viewed
- URL of the page being viewed
- URL of the page that was viewed prior to the current page
- Screen resolution
- Time in local timezone
- Files that were clicked and downloaded
- Link clicks to an outside domain
- Pages generation time
- Country, region, city
- Main Language of the browser
- User Agent of the browser
This list can be completed with additional features such as :
- Session recording, mouse events (movements, content forms and clicks)
- Form interactions
- Media interactions
- A/B Tests
Pick up one of the two :
- The processing of personal data with Matomo is based on legitimate interests, or :
- The processing of personal data with Matomo is based on explicit consent. Your privacy is our highest concern. That’s why we will not process any personal data with Matomo unless you give us clear explicit consent.
3 – The legitimate interests
This content applies only if you are processing personal data based on legitimate interests. You need here to justify your legitimate interests to process personal data. It is a set of questions described here.
Processing your personal data such as cookies is helping us identify what is working and what is not on our website. For example, it helps us identify if the way we are communicating is engaging or not and how we can organize the structure of the website better. Our team is benefiting from the processing of your personal data, and they are directly acting on the website. By processing your personal data, you can profit from a website which is getting better and better.
Without the data, we would not be able to provide you the service we are currently offering to you. Your data will be used only to improve the user experience on our website and help you find the information you are looking for.
4 – Recipient of the personal data
The personal data received through Matomo are sent to :
- Our company.
- Our web hosting provider : name and contact details of the web hosting provider.
Note : If you are using the Matomo Analytics Cloud by InnoCraft the web hosting provider is “InnoCraft, 150 Willis St, 6011 Wellington, New Zealand“.
5 – Details of transfers to third country and safeguards
Matomo data is hosted in Name of the country.
If the country mentioned is not within the EU, you need to mention here the appropriate safeguards, for example : our data is hosted in the United States within company XYZ, registered to the Privacy Shield program.
Note : The Matomo Analytics Cloud by InnoCraft is currently hosted in France. If you are using the cloud-hosted solution of Matomo, use “France” as name of the country.
6 – Retention period or criteria used to determine the retention period
We are keeping the personal data captured within Matomo for a period of indicate here the period.
Justify your choice, for example : as our data is hosted in France, we are applying the French law which defines a retention period of no more than 13 months. You can set the retention period in Matomo by using the following feature.
7 – The existence of each of the data subject’s rights
If you are processing personal data with Matomo based on legitimate interest :
As Matomo is processing personal data on legitimate interests, you can exercise the following rights :
- Right of access : you can ask us at any time to access your personal data.
- Right to erasure : you can ask us at any time to delete all the personal data we are processing about you.
- Right to object : you can object to the tracking of your personal data by using the following opt-out feature :
Insert here the opt-out feature.
If you are processing personal data with Matomo based on explicit consent :
As Matomo is processing personal data on explicit consent, you can exercise the following rights :
- Right of access : you can ask us at any time to access your personal data.
- Right to erasure : you can ask us at any time to delete all the personal data we are processing about you.
- Right to portability : you can ask us at any time for a copy of all the personal data we are processing about you in Matomo.
- Right to withdraw consent : you can withdraw your consent at any time by clicking on the following button.
8 – The right to withdraw consent at any time
If you are processing personal data under the consent lawful basis, you need to include the following section :
You can withdraw at any time your consent by clicking here (insert here the Matomo tracking code to remove consent).
9 – The right to lodge a complaint with a supervisory authority
If you think that the way we process your personal data with Matomo analytics is infringing the law, you have the right to lodge a complaint with a supervisory authority.
10 – Whether the provision of personal data is part of a statutory or contractual requirement ; or obligation and possible consequences of failing to provide the personal data
If you wish us to not process any personal data with Matomo, you can opt-out from it at any time. There will be no consequences at all regarding the use of our website.
11 – The existence of automated decision-making, including profiling and information about how decisions are made, the significance and the consequences
Matomo is not doing any profiling.
That’s the end of our blog post. We hope you enjoyed reading it and that it will help you get through the GDPR compliance process. If you have any questions dealing with this privacy policy in particular, do not hesitate to contact us.
The post How to complete your privacy policy with Matomo analytics under GDPR appeared first on Analytics Platform - Matomo.
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Overlaying a transparent webm on an MP4 freezes at the start sometimes
23 janvier 2021, par joshlat94I'm currently using the command

ffmpeg -i mainvideo.mp4 -vcodec libvpx -i myoverlay.webm -filter_complex "overlay = 5:5" done.mp4

To overlay a transparent webm on top of my main mp4. But for some reason the output video is frozen for the first 1 second but the audio is completely fine.

I've tried this command with other videos and it works sometimes but most of the time the first few frames seem frozen


Edit.
I have two main mp4 files, broken_source.mp4 and working_source.mp4. Putting the overlay on broken_source results in the output having the first 1 second of video frozen (audio completely fine) but putting the same overlay on working_source.mp4 is perfect and has no issues


Logs for putting the overlay on working_source :


ffmpeg -i working_source.mp4 -vcodec libvpx -i chat.webm -filter_complex "overlay = 0:0" working_complete.mp4
ffmpeg version 4.3.1-2021-01-01-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers
 built with gcc 10.2.0 (Rev5, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-libsnappy --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
 libavutil 56. 51.100 / 56. 51.100
 libavcodec 58. 91.100 / 58. 91.100
 libavformat 58. 45.100 / 58. 45.100
 libavdevice 58. 10.100 / 58. 10.100
 libavfilter 7. 85.100 / 7. 85.100
 libswscale 5. 7.100 / 5. 7.100
 libswresample 3. 7.100 / 3. 7.100
 libpostproc 55. 7.100 / 55. 7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'working_source.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.51.101
 Duration: 00:00:31.02, start: 0.000000, bitrate: 6176 kb/s
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 6035 kb/s, 60 fps, 60 tbr, 90k tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 handler_name : SoundHandler
[libvpx @ 0000016fb5074a80] v1.9.0-128-g3a38edea2
 Last message repeated 1 times
Input #1, matroska,webm, from 'chat.webm':
 Metadata:
 ENCODER : Lavf58.51.101
 Duration: 00:00:31.00, start: 0.000000, bitrate: 449 kb/s
 Stream #1:0: Video: vp8, yuva420p(tv, progressive), 500x300, SAR 1:1 DAR 5:3, 60 fps, 60 tbr, 1k tbn, 1k tbc (default)
 Metadata:
 alpha_mode : 1
 ENCODER : Lavc58.101.101 libvpx
 DURATION : 00:00:31.000000000
[libvpx @ 0000016fb50761c0] v1.9.0-128-g3a38edea2
Stream mapping:
 Stream #0:0 (h264) -> overlay:main (graph 0)
 Stream #1:0 (libvpx) -> overlay:overlay (graph 0)
 overlay (graph 0) -> Stream #0:0 (libx264)
 Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libvpx @ 0000016fb50761c0] v1.9.0-128-g3a38edea2
[libx264 @ 0000016fb5072040] using SAR=1/1
[libx264 @ 0000016fb5072040] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000016fb5072040] profile High, level 4.2, 4:2:0, 8-bit
[libx264 @ 0000016fb5072040] 264 - core 161 r3027 4121277 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 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=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'working_complete.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 60 fps, 15360 tbn, 60 tbc (default)
 Metadata:
 encoder : Lavc58.91.100 libx264
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 handler_name : SoundHandler
 encoder : Lavc58.91.100 aac
frame= 1861 fps= 44 q=-1.0 Lsize= 20013kB time=00:00:31.01 bitrate=5285.3kbits/s speed=0.729x
video:19477kB audio:486kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.244893%
[libx264 @ 0000016fb5072040] frame I:8 Avg QP:19.04 size:240534
[libx264 @ 0000016fb5072040] frame P:538 Avg QP:23.76 size: 23836
[libx264 @ 0000016fb5072040] frame B:1315 Avg QP:31.66 size: 3951
[libx264 @ 0000016fb5072040] consecutive B-frames: 3.0% 3.5% 14.8% 78.7%
[libx264 @ 0000016fb5072040] mb I I16..4: 6.4% 47.4% 46.2%
[libx264 @ 0000016fb5072040] mb P I16..4: 1.2% 4.2% 1.9% P16..4: 21.4% 5.3% 2.9% 0.0% 0.0% skip:63.1%
[libx264 @ 0000016fb5072040] mb B I16..4: 0.1% 0.2% 0.1% B16..8: 12.6% 1.5% 0.5% direct: 0.4% skip:84.6% L0:35.9% L1:60.0% BI: 4.1%
[libx264 @ 0000016fb5072040] 8x8 transform intra:55.5% inter:60.0%
[libx264 @ 0000016fb5072040] coded y,uvDC,uvAC intra: 63.5% 77.4% 40.4% inter: 3.7% 4.6% 0.7%
[libx264 @ 0000016fb5072040] i16 v,h,dc,p: 19% 37% 15% 29%
[libx264 @ 0000016fb5072040] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 18% 23% 7% 7% 7% 7% 6% 8%
[libx264 @ 0000016fb5072040] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 22% 17% 7% 8% 7% 7% 6% 6%
[libx264 @ 0000016fb5072040] i8c dc,h,v,p: 45% 27% 18% 11%
[libx264 @ 0000016fb5072040] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000016fb5072040] ref P L0: 74.5% 13.9% 9.1% 2.5%
[libx264 @ 0000016fb5072040] ref B L0: 91.9% 7.4% 0.7%
[libx264 @ 0000016fb5072040] ref B L1: 96.6% 3.4%
[libx264 @ 0000016fb5072040] kb/s:5144.05
[aac @ 0000016fb5026a80] Qavg: 193.230 



Logs for putting the overlay on broken_source :


ffmpeg -i broken_source.mp4 -vcodec libvpx -i chat.webm -filter_complex "overlay = 0:0" broken_complete.mp4
ffmpeg version 4.3.1-2021-01-01-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers
 built with gcc 10.2.0 (Rev5, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-libsnappy --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
 libavutil 56. 51.100 / 56. 51.100
 libavcodec 58. 91.100 / 58. 91.100
 libavformat 58. 45.100 / 58. 45.100
 libavdevice 58. 10.100 / 58. 10.100
 libavfilter 7. 85.100 / 7. 85.100
 libswscale 5. 7.100 / 5. 7.100
 libswresample 3. 7.100 / 3. 7.100
 libpostproc 55. 7.100 / 55. 7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'broken_source.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.26.101
 Duration: 00:00:45.02, start: 0.000000, bitrate: 5962 kb/s
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 5952 kb/s, 60 fps, 60 tbr, 90k tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 handler_name : SoundHandler
[libvpx @ 0000021071f90280] v1.9.0-128-g3a38edea2
 Last message repeated 1 times
Input #1, matroska,webm, from 'chat.webm':
 Metadata:
 ENCODER : Lavf58.51.101
 Duration: 00:00:31.00, start: 0.000000, bitrate: 449 kb/s
 Stream #1:0: Video: vp8, yuva420p(tv, progressive), 500x300, SAR 1:1 DAR 5:3, 60 fps, 60 tbr, 1k tbn, 1k tbc (default)
 Metadata:
 alpha_mode : 1
 ENCODER : Lavc58.101.101 libvpx
 DURATION : 00:00:31.000000000
[libvpx @ 0000021072020dc0] v1.9.0-128-g3a38edea2
 Stream #0:0 (h264) -> overlay:main (graph 0)
 Stream #1:0 (libvpx) -> overlay:overlay (graph 0)
 overlay (graph 0) -> Stream #0:0 (libx264)
 Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libvpx @ 0000021072020dc0] v1.9.0-128-g3a38edea2
[libx264 @ 0000021072022980] using SAR=1/1
[libx264 @ 0000021072022980] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000021072022980] profile High, level 4.2, 4:2:0, 8-bit
[libx264 @ 0000021072022980] 264 - core 161 r3027 4121277 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 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=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'broken_complete.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 60 fps, 15360 tbn, 60 tbc (default)
 Metadata:
 encoder : Lavc58.91.100 libx264
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 handler_name : SoundHandler
 encoder : Lavc58.91.100 aac
frame= 2701 fps= 47 q=-1.0 Lsize= 23020kB time=00:00:45.01 bitrate=4189.5kbits/s dup=60 drop=0 speed=0.789x
video:22242kB audio:708kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.309473%
[libx264 @ 0000021072022980] frame I:11 Avg QP:18.82 size:210832
[libx264 @ 0000021072022980] frame P:742 Avg QP:23.14 size: 18106
[libx264 @ 0000021072022980] frame B:1948 Avg QP:31.16 size: 3604
[libx264 @ 0000021072022980] consecutive B-frames: 1.7% 4.2% 6.2% 87.8%
[libx264 @ 0000021072022980] mb I I16..4: 10.0% 46.2% 43.7%
[libx264 @ 0000021072022980] mb P I16..4: 1.6% 4.5% 1.5% P16..4: 16.5% 4.2% 2.4% 0.0% 0.0% skip:69.3%
[libx264 @ 0000021072022980] mb B I16..4: 0.1% 0.3% 0.1% B16..8: 11.3% 1.4% 0.4% direct: 0.4% skip:86.0% L0:36.5% L1:59.3% BI: 4.3%
[libx264 @ 0000021072022980] 8x8 transform intra:57.4% inter:64.8%
[libx264 @ 0000021072022980] coded y,uvDC,uvAC intra: 55.4% 42.1% 14.8% inter: 3.3% 2.1% 0.3%
[libx264 @ 0000021072022980] i16 v,h,dc,p: 21% 37% 15% 27%
[libx264 @ 0000021072022980] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 18% 24% 6% 7% 6% 7% 6% 7%
[libx264 @ 0000021072022980] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 22% 16% 7% 7% 7% 7% 6% 6%
[libx264 @ 0000021072022980] i8c dc,h,v,p: 58% 22% 15% 5%
[libx264 @ 0000021072022980] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000021072022980] ref P L0: 68.9% 16.6% 10.8% 3.6%
[libx264 @ 0000021072022980] ref B L0: 91.6% 7.2% 1.2%
[libx264 @ 0000021072022980] ref B L1: 95.9% 4.1%
[libx264 @ 0000021072022980] kb/s:4047.35
[aac @ 0000021072024840] Qavg: 189.405 



-
Android FFmpeg Video Player
11 mars 2013, par DilipI want to play video using
FFmpeg
for this have used some code,But it open file but not drawing frames thowing Unhandled page fault exception.Java Code :
public class MainActivity extends Activity {
private static native void openFile();
private static native void drawFrame(Bitmap bitmap);
private static native void drawFrameAt(Bitmap bitmap, int secs);
private Bitmap mBitmap;
private int mSecs = 0;
static {
System.loadLibrary("ffmpegutils");
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// setContentView(new VideoView(this));
setContentView(R.layout.main);
mBitmap = Bitmap.createBitmap(320, 240, Bitmap.Config.ARGB_8888);
openFile();
Button btn = (Button) findViewById(R.id.frame_adv);
btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
try {
drawFrame(mBitmap);
ImageView i = (ImageView) findViewById(R.id.frame);
i.setImageBitmap(mBitmap);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}}Jni code :
#include
#include
#include
#include <android></android>log.h>
#include <android></android>bitmap.h>
#include <libavcodec></libavcodec>avcodec.h>
#include <libavformat></libavformat>avformat.h>
#include <libswscale></libswscale>swscale.h>
#define LOG_TAG "FFMPEGSample"
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
/* Cheat to keep things simple and just use some globals. */
AVFormatContext *pFormatCtx;
AVCodecContext *pCodecCtx;
AVFrame *pFrame;
AVFrame *pFrameRGB;
int videoStream;
/*
* Write a frame worth of video (in pFrame) into the Android bitmap
* described by info using the raw pixel buffer. It's a very inefficient
* draw routine, but it's easy to read. Relies on the format of the
* bitmap being 8bits per color component plus an 8bit alpha channel.
*/
static void fill_bitmap(AndroidBitmapInfo* info, void *pixels, AVFrame *pFrame) {
uint8_t *frameLine;
int yy;
for (yy = 0; yy < info->height; yy++) {
uint8_t* line = (uint8_t*) pixels;
frameLine = (uint8_t *) pFrame->data[0] + (yy * pFrame->linesize[0]);
int xx;
for (xx = 0; xx < info->width; xx++) {
int out_offset = xx * 4;
int in_offset = xx * 3;
line[out_offset] = frameLine[in_offset];
line[out_offset + 1] = frameLine[in_offset + 1];
line[out_offset + 2] = frameLine[in_offset + 2];
line[out_offset + 3] = 0;
}
pixels = (char*) pixels + info->stride;
}
}
void Java_com_churnlabs_ffmpegsample_MainActivity_openFile(JNIEnv * env,
jobject this) {
int ret;
int err;
int i;
AVCodec *pCodec;
uint8_t *buffer;
int numBytes;
av_register_all();
LOGE("Registered formats***********************************");
err = av_open_input_file(&pFormatCtx, "file:///mnt/sdcard/android.3gp",
NULL, 0, NULL);
LOGE("Called open file***************************************************");
if (err != 0) {
LOGE(
"Couldn't open file****************************************************");
return;
}
LOGE(
"Opened file***********************************************************");
if (av_find_stream_info(pFormatCtx) < 0) {
LOGE(
"Unable to get stream info*****************************************");
return;
}
videoStream = -1;
for (i = 0; i < pFormatCtx->nb_streams; i++) {
if (pFormatCtx->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO) {
videoStream = i;
break;
}
}
if (videoStream == -1) {
LOGE("Unable to find video stream");
return;
}
LOGI("Video stream is [%d]", videoStream);
pCodecCtx = pFormatCtx->streams[videoStream]->codec;
pCodec = avcodec_find_decoder(pCodecCtx->codec_id);
if (pCodec == NULL) {
LOGE("Unsupported codec**********************************************");
return;
}
if (avcodec_open(pCodecCtx, pCodec) < 0) {
LOGE("Unable to open codec***************************************");
return;
}
pFrame = avcodec_alloc_frame();
pFrameRGB = avcodec_alloc_frame();
LOGI("Video size is [%d x %d]", pCodecCtx->width, pCodecCtx->height);
numBytes = avpicture_get_size(PIX_FMT_RGB24, pCodecCtx->width,
pCodecCtx->height);
buffer = (uint8_t *) av_malloc(numBytes * sizeof(uint8_t));
avpicture_fill((AVPicture *) pFrameRGB, buffer, PIX_FMT_RGB24,
pCodecCtx->width, pCodecCtx->height);
}
void Java_com_churnlabs_ffmpegsample_MainActivity_drawFrame(JNIEnv * env,
jobject this, jstring bitmap) {
AndroidBitmapInfo info;
void* pixels;
int ret;
int err;
int i;
int frameFinished = 0;
AVPacket packet;
static struct SwsContext *img_convert_ctx;
int64_t seek_target;
if ((ret = AndroidBitmap_getInfo(env, bitmap, &info)) < 0) {
LOGE("AndroidBitmap_getInfo() failed ! error=%d", ret);
return;
}
LOGE(
"Checked on the bitmap*************************************************");
if ((ret = AndroidBitmap_lockPixels(env, bitmap, &pixels)) < 0) {
LOGE("AndroidBitmap_lockPixels() failed ! error=%d", ret);
}
LOGE(
"Grabbed the pixels*******************************************************");
i = 0;
while ((i == 0) && (av_read_frame(pFormatCtx, &packet) >= 0)) {
if (packet.stream_index == videoStream) {
avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished, &packet);
if (frameFinished) {
LOGE("packet pts %llu", packet.pts);
// This is much different than the tutorial, sws_scale
// replaces img_convert, but it's not a complete drop in.
// This version keeps the image the same size but swaps to
// RGB24 format, which works perfect for PPM output.
int target_width = 320;
int target_height = 240;
img_convert_ctx = sws_getContext(pCodecCtx->width,
pCodecCtx->height, pCodecCtx->pix_fmt, target_width,
target_height, PIX_FMT_RGB24, SWS_BICUBIC, NULL, NULL,
NULL);
if (img_convert_ctx == NULL) {
LOGE("could not initialize conversion context\n");
return;
}
sws_scale(img_convert_ctx,
(const uint8_t* const *) pFrame->data, pFrame->linesize,
0, pCodecCtx->height, pFrameRGB->data,
pFrameRGB->linesize);
// save_frame(pFrameRGB, target_width, target_height, i);
fill_bitmap(&info, pixels, pFrameRGB);
i = 1;
}
}
av_free_packet(&packet);
}
AndroidBitmap_unlockPixels(env, bitmap);
}
int seek_frame(int tsms) {
int64_t frame;
frame = av_rescale(tsms, pFormatCtx->streams[videoStream]->time_base.den,
pFormatCtx->streams[videoStream]->time_base.num);
frame /= 1000;
if (avformat_seek_file(pFormatCtx, videoStream, 0, frame, frame,
AVSEEK_FLAG_FRAME) < 0) {
return 0;
}
avcodec_flush_buffers(pCodecCtx);
return 1;
}Log Trace
0): <6>AUO_TOUCH: ts_irqHandler: before disable_irq()
D/PrintK ( 57): <6>AUO_TOUCH: ts_irqWorkHandler: P1(313,750),P2(0,0)
D/PrintK ( 0): <6>AUO_TOUCH: ts_irqHandler: before disable_irq()
D/PrintK ( 57): <6>AUO_TOUCH: ts_irqWorkHandler: P1(0,0),P2(0,0)
E/FFMPEGSample( 2882): Checked on the bitmap*************************************************
E/FFMPEGSample( 2882): Grabbed the pixels*******************************************************
E/FFMPEGSample( 2882): packet pts 0
F/PrintK ( 2882): <2>Exception!!! bs.ffmpegsample: unhandled page fault (11) at 0x0000000c, code 0x017
F/PrintK ( 2882): <2>Exception!!! bs.ffmpegsample: unhandled page fault (11) at 0x0000000c, code 0x017
I/DEBUG ( 86): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
F/DEBUG ( 86): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
I/DEBUG ( 86): Build fingerprint: 'dell/streak/streak/8x50:2.2.2/FRG83G/eng.cmbuild.20110317.163900:user/release-keys'
I/DEBUG ( 86): Exception!!! pid: 2882, tid: 2882 >>> com.churnlabs.ffmpegsample <<<
F/DEBUG ( 86): Exception!!! pid: 2882, tid: 2882 >>> com.churnlabs.ffmpegsample <<<
I/DEBUG ( 86): signal 11 (SIGSEGV), fault addr 0000000c
F/DEBUG ( 86): signal 11 (SIGSEGV), fault addr 0000000c
I/DEBUG ( 86): r0 00000070 r1 00000000 r2 0024fca8 r3 afd42328
F/DEBUG ( 86): r0 00000070 r1 00000000 r2 0024fca8 r3 afd42328
I/DEBUG ( 86): r4 00000000 r5 00000000 r6 0000062c r7 0000a000
F/DEBUG ( 86): r4 00000000 r5 00000000 r6 0000062c r7 0000a000
I/DEBUG ( 86): r8 be9794f0 r9 428ab9d8 10 00000003 fp be979830
F/DEBUG ( 86): r8 be9794f0 r9 428ab9d8 10 00000003 fp be979830
I/DEBUG ( 86): ip ffffff90 sp be979448 lr afd0c633 pc afd0c320 cpsr 80000030
F/DEBUG ( 86): ip ffffff90 sp be979448 lr afd0c633 pc afd0c320 cpsr 80000030
I/DEBUG ( 86): d0 6472656767756265 d1 0000000000000000
I/DEBUG ( 86): d2 0000000000000000 d3 0000000044480000
I/DEBUG ( 86): d4 8000000000000000 d5 000000003f800000
I/DEBUG ( 86): d6 0000000000000000 d7 4448000043f00000
I/DEBUG ( 86): d8 0000000000000000 d9 0000000000000000
I/DEBUG ( 86): d10 0000000000000000 d11 0000000000000000
I/DEBUG ( 86): d12 0000000000000000 d13 0000000000000000
I/DEBUG ( 86): d14 0000000000000000 d15 0000000000000000
I/DEBUG ( 86): d16 0000000000000000 d17 0000000000000000
I/DEBUG ( 86): d18 0000000000000000 d19 0000000000000000
I/DEBUG ( 86): d20 3ff0000000000000 d21 8000000000000000
I/DEBUG ( 86): d22 0000000000000000 d23 0000000500010004
I/DEBUG ( 86): d24 0101010101010101 d25 0000000000000000
I/DEBUG ( 86): d26 0000000000000000 d27 0000000000000000
I/DEBUG ( 86): d28 0000000000000000 d29 3ff0000000000000
I/DEBUG ( 86): d30 0000000000000000 d31 3ff0000000000000
I/DEBUG ( 86): scr 80000012
I/DEBUG ( 86):
I/DEBUG ( 86): #00 pc 0000c320 /system/lib/libc.so
F/DEBUG ( 86): #00 pc 0000c320 /system/lib/libc.so
I/DEBUG ( 86): #01 pc 0000c62e /system/lib/libc.so
F/DEBUG ( 86): #01 pc 0000c62e /system/lib/libc.so
I/DEBUG ( 86): #02 pc 0000cd3e /system/lib/libc.so
F/DEBUG ( 86): #02 pc 0000cd3e /system/lib/libc.so
I/DEBUG ( 86): #03 pc 0002d2c4 /system/lib/libskia.so
F/DEBUG ( 86): #03 pc 0002d2c4 /system/lib/libskia.so
I/DEBUG ( 86): #04 pc 000693ec /system/lib/libskia.so
F/DEBUG ( 86): #04 pc 000693ec /system/lib/libskia.so
I/DEBUG ( 86): #05 pc 00064d70 /system/lib/libskia.so
F/DEBUG ( 86): #05 pc 00064d70 /system/lib/libskia.so
I/DEBUG ( 86): #06 pc 0004dea8 /system/lib/libandroid_runtime.so
F/DEBUG ( 86): #06 pc 0004dea8 /system/lib/libandroid_runtime.so
I/DEBUG ( 86): #07 pc 00016df4 /system/lib/libdvm.so
F/DEBUG ( 86): #07 pc 00016df4 /system/lib/libdvm.so
I/DEBUG ( 86): #08 pc 00042904 /system/lib/libdvm.so
F/DEBUG ( 86): #08 pc 00042904 /system/lib/libdvm.so
I/DEBUG ( 86): #09 pc 0001bd58 /system/lib/libdvm.so
F/DEBUG ( 86): #09 pc 0001bd58 /system/lib/libdvm.so
I/DEBUG ( 86): #10 pc 00022550 /system/lib/libdvm.so
F/DEBUG ( 86): #10 pc 00022550 /system/lib/libdvm.so
I/DEBUG ( 86): #11 pc 000213f0 /system/lib/libdvm.so
F/DEBUG ( 86): #11 pc 000213f0 /system/lib/libdvm.so
I/DEBUG ( 86): #12 pc 00058c4a /system/lib/libdvm.so
F/DEBUG ( 86): #12 pc 00058c4a /system/lib/libdvm.so
I/DEBUG ( 86): #13 pc 00060e72 /system/lib/libdvm.so
F/DEBUG ( 86): #13 pc 00060e72 /system/lib/libdvm.so
I/DEBUG ( 86): #14 pc 0001bd58 /system/lib/libdvm.so
F/DEBUG ( 86): #14 pc 0001bd58 /system/lib/libdvm.so
I/DEBUG ( 86): #15 pc 00022550 /system/lib/libdvm.so
F/DEBUG ( 86): #15 pc 00022550 /system/lib/libdvm.so
I/DEBUG ( 86): #16 pc 000213f0 /system/lib/libdvm.so
F/DEBUG ( 86): #16 pc 000213f0 /system/lib/libdvm.so
I/DEBUG ( 86): #17 pc 00058a90 /system/lib/libdvm.so
F/DEBUG ( 86): #17 pc 00058a90 /system/lib/libdvm.so
I/DEBUG ( 86): #18 pc 0004525e /system/lib/libdvm.so
F/DEBUG ( 86): #18 pc 0004525e /system/lib/libdvm.so
I/DEBUG ( 86): #19 pc 0002e574 /system/lib/libandroid_runtime.so
F/DEBUG ( 86): #19 pc 0002e574 /system/lib/libandroid_runtime.so
I/DEBUG ( 86): #20 pc 0002f5f6 /system/lib/libandroid_runtime.so
F/DEBUG ( 86): #20 pc 0002f5f6 /system/lib/libandroid_runtime.so
I/DEBUG ( 86): #21 pc 00008ca8 /system/bin/app_process
F/DEBUG ( 86): #21 pc 00008ca8 /system/bin/app_process
I/DEBUG ( 86): #22 pc 0000d3d0 /system/lib/libc.so
F/DEBUG ( 86): #22 pc 0000d3d0 /system/lib/libc.so
I/DEBUG ( 86):
I/DEBUG ( 86): code around pc:
I/DEBUG ( 86): afd0c300 19d94f56 42ba690f 80a4f0c0 94001814
I/DEBUG ( 86): afd0c310 f08042a2 68d1809f 42916994 6895d00e
I/DEBUG ( 86): afd0c320 429668ee 8096f040 4296688e 8092f040
I/DEBUG ( 86): afd0c330 bf2442bd 608d60e9 e08bd21b b1116951
I/DEBUG ( 86): afd0c340 0514f102 6911e007 f102b191 e0020510
I/DEBUG ( 86):
I/DEBUG ( 86): code around lr:
I/DEBUG ( 86): afd0c610 60f11008 f8c1608e 4e31c00c f10319a1
I/DEBUG ( 86): afd0c620 608a0608 e04b614d b1b2684a f7ff4628
I/DEBUG ( 86): afd0c630 e00ffe23 0f41f115 f04fbf88 d80c35ff
I/DEBUG ( 86): afd0c640 350b4927 0507f025 68431860 4628b12b
I/DEBUG ( 86): afd0c650 fc1cf7ff 28004606 4e21d132 689119a2
I/DEBUG ( 86):
I/DEBUG ( 86): stack:
I/DEBUG ( 86): be979408 000001e0
I/DEBUG ( 86): be97940c be979494 [stack]
I/DEBUG ( 86): be979410 be979438 [stack]
I/DEBUG ( 86): be979414 be979478 [stack]
I/DEBUG ( 86): be979418 0012f484 [heap]
I/DEBUG ( 86): be97941c be979428 [stack]
I/DEBUG ( 86): be979420 00000000
I/DEBUG ( 86): be979424 ab163cec /system/lib/libskia.so
I/DEBUG ( 86): be979428 3f800000
I/DEBUG ( 86): be97942c 80000000 /system/lib/libicudata.so
I/DEBUG ( 86): be979430 00000000
I/DEBUG ( 86): be979434 80000000 /system/lib/libicudata.so
I/DEBUG ( 86): be979438 3f800000
I/DEBUG ( 86): be97943c 00000000
I/DEBUG ( 86): be979440 df002777
I/DEBUG ( 86): be979444 e3a070ad
I/DEBUG ( 86): #00 be979448 0024fd18 [heap]
I/DEBUG ( 86): be97944c afd4372c /system/lib/libc.so
I/DEBUG ( 86): be979450 000000c5
I/DEBUG ( 86): be979454 afd42328 /system/lib/libc.so
I/DEBUG ( 86): be979458 00000070
I/DEBUG ( 86): be97945c 0000062c
I/DEBUG ( 86): be979460 00000003
I/DEBUG ( 86): be979464 afd0c633 /system/lib/libc.so
I/DEBUG ( 86): #01 be979468 be9794c8 [stack]
I/DEBUG ( 86): be97946c 00000000
I/DEBUG ( 86): be979470 002576bc [heap]
I/DEBUG ( 86): be979474 ab163d2c /system/lib/libskia.so
I/DEBUG ( 86): be979478 00000000
I/DEBUG ( 86): be97947c 00000000
I/DEBUG ( 86): be979480 44480000 /system/framework/framework-res.apk
I/DEBUG ( 86): be979484 00000068
I/DEBUG ( 86): be979488 00000002
I/DEBUG ( 86): be97948c 00000068
I/DEBUG ( 86): be979490 00000003
I/DEBUG ( 86): be979494 afd0cd41 /system/lib/libc.so
E/Parcel ( 841): Reading a NULL string not supported here.Can any plz suggest me where I'm doing wrong.