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  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

Sur d’autres sites (8969)

  • ffmpeg realtime bad quality variable fps cams inputs to constant framerate problem

    23 janvier 2023, par BloodMan
        ../ffmpeg/ffmpeg -err_detect ignore_err -nostdin -threads 0 -y -strict experimental -thread_queue_size 10M -max_delay 20M -rtbufsize 20M -fflags +discardcorrupt \
        -i "${cam1}" -i "${cam2}" -i "${cam3}" -i "${cam4}" \
        -filter_complex " \
        nullsrc=size=3840x2160:rate=30 [main1]; \
        anullsrc=channel_layout=stereo:sample_rate=44100 [a]; \
        [0:v] scale=1920:1080 [overlay1]; \
        [1:v] scale=1920:1080 [overlay2]; \
        [2:v] scale=1920:1080 [overlay3]; \
        [3:v] scale=1920:1080 [overlay4]; \
        [main1][overlay1] overlay=0:0 [main2]; \
        [main2][overlay2] overlay=1920:0 [main3]; \
        [main3][overlay3] overlay=0:1080 [main4]; \
        [main4][overlay4] overlay=1920:1080 [v] " \
        -t 10 -r 30 -g 60 -map "[v]" -map "[a]" \
        -shortest -video_size 3840x2160 -pix_fmt yuv420p -vcodec libx264 -preset ultrafast -tune zerolatency -minrate 2M -maxrate 2M -bufsize 20M -c:a aac -b:a 96k -ac 2 -ar 48000 -copytb 1 \
        -f flv -y -fflags +genpts rtmp://b.rtmp.youtube.com/live2/${key}?backup=1


    


    ffmpeg version N-109650-g9d5e66942c Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)
  configuration: --prefix=/home/bloodman/ffmpeg --pkg-config-flags=--static --extra-cflags='-I/home/bloodman/ffmpeg/include -march=native' --extra-ldflags=-L/home/bloodman/ffmpeg/lib --extra-libs='-lpthread -lm' --bindir=/home/bloodman/ffmpeg --enable-gpl --enable-nonfree --enable-libx264 --enable-libfdk-aac --enable-libmp3lame --enable-libfreetype --enable-hardcoded-tables
  libavutil      57. 44.100 / 57. 44.100
  libavcodec     59. 56.100 / 59. 56.100
  libavformat    59. 35.100 / 59. 35.100
  libavdevice    59.  8.101 / 59.  8.101
  libavfilter     8. 54.100 /  8. 54.100
  libswscale      6.  8.112 /  6.  8.112
  libswresample   4.  9.100 /  4.  9.100
  libpostproc    56.  7.100 / 56.  7.100
[hls @ 0x56019db77780] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019db77780] Opening 'cams/stream1_113.ts' for reading
Input #0, hls, from 'cams/stream1.m3u8':
  Duration: N/A, start: 1122.341667, bitrate: N/A
  Program 0
    Metadata:
      variant_bitrate : 0
  Stream #0:0: Video: h264 (Baseline) ([27][0][0][0] / 0x001B), yuv420p, 2048x1536, 15 fps, 15 tbr, 90k tbn
    Metadata:
      variant_bitrate : 0
[hls @ 0x56019db9e980] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019db9e980] Opening 'cams/stream2_105.ts' for reading
Input #1, hls, from 'cams/stream2.m3u8':
  Duration: N/A, start: 1042.633000, bitrate: N/A
  Program 0
    Metadata:
      variant_bitrate : 0
  Stream #1:0: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuvj420p(pc, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 100 tbr, 90k tbn
    Metadata:
      variant_bitrate : 0
[hls @ 0x56019dccdbc0] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019dccdbc0] Opening 'cams/stream3_14.ts' for reading
Input #2, hls, from 'cams/stream3.m3u8':
  Duration: N/A, start: 132.469000, bitrate: N/A
  Program 0
    Metadata:
      variant_bitrate : 0
  Stream #2:0: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 2688x1520, 25 fps, 100 tbr, 90k tbn
    Metadata:
      variant_bitrate : 0
[hls @ 0x56019f0ec980] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019f0ec980] Opening 'cams/stream4_26.ts' for reading
Input #3, hls, from 'cams/stream4.m3u8':
  Duration: N/A, start: 253.389000, bitrate: N/A
  Program 0
    Metadata:
      variant_bitrate : 0
  Stream #3:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuvj420p(pc, bt709), 1920x1080, 90k tbr, 90k tbn
    Metadata:
      variant_bitrate : 0
Stream mapping:
  Stream #0:0 (h264) -> scale:default
  Stream #1:0 (h264) -> scale:default
  Stream #2:0 (h264) -> scale:default
  Stream #3:0 (h264) -> scale:default
  overlay:default -> Stream #0:0 (libx264)
  anullsrc:default -> Stream #0:1 (aac)
[hls @ 0x56019db77780] Opening 'cams/stream1_114.ts' for reading
[hls @ 0x56019db77780] Opening 'cams/stream1_115.ts' for reading
[swscaler @ 0x5601a2c78e40] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x5601a332c940] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x5601a2c78e40] deprecated pixel format used, make sure you did set range correctly
    Last message repeated 2 times
[swscaler @ 0x5601a332c940] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x5601a361fc00] deprecated pixel format used, make sure you did set range correctly
    Last message repeated 1 times
[libx264 @ 0x56019e5212c0] using SAR=1/1
[libx264 @ 0x56019e5212c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x56019e5212c0] profile Constrained Baseline, level 5.1, 4:2:0, 8-bit
[libx264 @ 0x56019e5212c0] 264 - core 160 r3011 cde9a93 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - 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=8 lookahead_threads=8 sliced_threads=1 slices=8 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=60 keyint_min=6 scenecut=0 intra_refresh=0 rc_lookahead=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=2000 vbv_bufsize=20000 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=0
Output #0, flv, to 'rtmp://b.rtmp.youtube.com/live2/XXXX-XXXX-XXXX-XXXX-XXXX?backup=1':
  Metadata:
    encoder         : Lavf59.35.100
  Stream #0:0: Video: h264 ([7][0][0][0] / 0x0007), yuv420p(progressive), 3840x2160 [SAR 1:1 DAR 16:9], q=2-31, 30 fps, 1k tbn
    Metadata:
      encoder         : Lavc59.56.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 2000000/0/0 buffer size: 20000000 vbv_delay: N/A
  Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz, stereo, fltp, 96 kb/s
    Metadata:
      encoder         : Lavc59.56.100 aac
[hls @ 0x56019db77780] Skip ('#EXT-X-VERSION:3')00:00:03.22 bitrate=7519.6kbits/s speed=0.359x
[hls @ 0x56019db77780] Opening 'cams/stream1_116.ts' for reading
[hls @ 0x56019db77780] Skip ('#EXT-X-VERSION:3')00:00:07.23 bitrate=4470.2kbits/s speed=0.383x
[hls @ 0x56019db77780] Opening 'cams/stream1_117.ts' for reading
[hls @ 0x56019f0ec980] Skip ('#EXT-X-VERSION:3')00:00:09.04 bitrate=3978.1kbits/s speed=0.384x
[hls @ 0x56019f0ec980] Opening 'cams/stream4_27.ts' for reading
[hls @ 0x56019dccdbc0] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019dccdbc0] Opening 'cams/stream3_15.ts' for reading
[hls @ 0x56019db9e980] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019db9e980] Opening 'cams/stream2_106.ts' for reading
[flv @ 0x56019e639a00] Failed to update header with correct duration.811.6kbits/s speed=0.385x
[flv @ 0x56019e639a00] Failed to update header with correct filesize.
frame=  299 fps= 12 q=34.0 Lsize=    4622kB time=00:00:09.98 bitrate=3792.7kbits/s speed=0.386x
video:4603kB audio:3kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.349536%
[libx264 @ 0x56019e5212c0] frame I:5     Avg QP:45.60  size:275880
[libx264 @ 0x56019e5212c0] frame P:294   Avg QP:38.77  size: 11340
[libx264 @ 0x56019e5212c0] mb I  I16..4: 100.0%  0.0%  0.0%
[libx264 @ 0x56019e5212c0] mb P  I16..4:  1.4%  0.0%  0.0%  P16..4:  4.7%  0.0%  0.0%  0.0%  0.0%    skip:93.9%
[libx264 @ 0x56019e5212c0] coded y,uvDC,uvAC intra: 16.2% 8.9% 1.2% inter: 1.8% 0.6% 0.0%
[libx264 @ 0x56019e5212c0] i16 v,h,dc,p: 64% 17% 15%  5%
[libx264 @ 0x56019e5212c0] i8c dc,h,v,p: 90%  6%  3%  1%
[libx264 @ 0x56019e5212c0] kb/s:3783.23
[aac @ 0x56019e63a700] Qavg: 65511.207
[hls @ 0x56019db77780] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019db77780] Opening 'cams/stream1_118.ts' for reading


    


    NOTES : sources are cams streamed first to hls/m3u8. -t 10 only for testing purposes.

    


    The problem is variable output fps= 12 (sometimes 2, 5, 10, maybe 13) where I expect 30. Machine is 10 times greater (encode uses up to 5% cpu).

    


    Im trying adding -re, -r 30, -r 15 to sources, convert sources via stream_filter (,fps=30), vsync (old versions of ffmpeg), wallclock time, etc. and reading stackoverflow of course. And... nothing.

    


    Where is the problem ?

    


  • OCPA, FDBR and TDPSA – What you need to know about the US’s new privacy laws

    22 juillet 2024, par Daniel Crough

    On July 1, 2024, new privacy laws took effect in Florida, Oregon, and Texas. People in these states now have more control over their personal data, signaling a shift in privacy policy in the United States. Here’s what you need to know about these laws and how privacy-focused analytics can help your business stay compliant.

    Consumer rights are front and centre across all three laws

    The Florida Digital Bill of Rights (FDBR), Oregon Consumer Privacy Act (OCPA), and Texas Data Privacy and Security Act (TDPSA) grant consumers similar rights.

    Access : Consumers can access their personal data held by businesses.

    Correction : Consumers can correct inaccurate data.

    Deletion : Consumers may request data deletion.

    Opt-Out : Consumers can opt-out of the sale of their personal data and targeted advertising.

    Oregon Consumer Privacy Act (OCPA)

    The Oregon Consumer Privacy Act (OCPA), signed into law on June 23, 2023, and effective as of July 1, 2024, grants Oregonians new rights regarding their personal data and imposes obligations on businesses. Starting July 1, 2025, authorities will enforce provisions that require data protection assessments, and businesses must recognize universal opt-out mechanisms by January 1, 2026. In Oregon, the OCPA applies to business that :

    • Either conduct business in Oregon or offer products and services to Oregon residents

    • Control or process the personal data of 100,000 consumers or more, or

    • Control or process the data of 25,000 or more consumers while receiving over 25% of their gross revenues from selling personal data.

    Exemptions include public bodies like state and local governments, financial institutions, and insurers that operate under specific financial regulations. The law also excludes protected health information covered by HIPAA and other specific federal regulations.

    Business obligations

    Data Protection Assessments : Businesses must conduct data protection assessments for high-risk processing activities, such as those involving sensitive data or targeting children.

    Consent for Sensitive Data : Businesses must secure explicit consent before collecting, processing, or selling sensitive personal data, such as racial or ethnic origin, religious beliefs, health information, biometric data, and geolocation.

    Universal Opt-out : Starting January 1, 2025, businesses must acknowledge universal opt-out mechanisms, like the Global Privacy Control, that allow consumers to opt out of data collection and processing activities.

    Enforcement

    The Oregon Attorney General can issue fines up to $7,500 per violation. There is no private right of action.

    Unique characteristics of the OCPA

    The OCPA differs from other state privacy laws by requiring affirmative opt-in consent for processing sensitive and children’s data, and by including nonprofit organisations under its scope. It also requires global browser opt-out mechanisms starting in 2026.

    Florida Digital Bill of Rights (FDBR)

    The Florida Digital Bill of Rights (FDBR) became law on June 6, 2023, and it came into effect on July 1, 2024. This law targets businesses with substantial operations or revenues tied to digital activities and seeks to protect the personal data of Florida residents by granting them greater control over their information and imposing stricter obligations on businesses. It applies to entities that :

    • Conduct business in Florida or provide products or services targeting Florida residents,

    • Have annual global gross revenues exceeding $1 billion,

    • Receive 50% or more of their revenues from digital advertising or operate significant digital platforms such as app stores or smart speakers with virtual assistants.

    Exemptions include governmental entities, nonprofits, financial institutions covered by the Gramm-Leach-Bliley Act, and entities covered by HIPAA.

    Business obligations

    Data Security Measures : Companies are required to implement reasonable data security measures to protect personal data from unauthorised access and breaches.

    Handling Sensitive Data : Explicit consent is required for processing sensitive data, which includes information like racial or ethnic origin, religious beliefs, and biometric data.

    Non-Discrimination : Entities must ensure they do not discriminate against consumers who exercise their privacy rights.

    Data Minimisation : Businesses must collect only necessary data.

    Vendor Management : Businesses must ensure that their processors and vendors also comply with the FDBR, regarding the secure handling and processing of personal data.

    Enforcement

    The Florida Attorney General can impose fines of up to $50,000 per violation, with higher penalties for intentional breaches.

    Unique characteristics of the FDBR

    Unlike broader privacy laws such as the California Consumer Privacy Act (CCPA), which apply to a wider range of businesses based on lower revenue thresholds and the volume of data processed, the FDBR distinguishes itself by targeting large-scale businesses with substantial revenues from digital advertising. The FDBR also emphasises specific consumer rights related to modern digital interactions, reflecting the evolving landscape of online privacy concerns.

    Texas Data Privacy and Security Act (TDPSA)

    The Texas Data Privacy and Security Act (TDPSA), signed into law on June 16, 2023, and effective as of July 1, 2024, enhances data protection for Texas residents. The TDPSA applies to entities that :

    • Conduct business in Texas or offer products or services to Texas residents.

    • Engage in processing or selling personal data.

    • Do not fall under the classification of small businesses according to the U.S. Small Business Administration’s criteria, which usually involve employee numbers or average annual receipts. 

    The law excludes state agencies, political subdivisions, financial institutions compliant with the Gramm-Leach-Bliley Act, and entities compliant with HIPAA.

    Business obligations

    Data Protection Assessments : Businesses must conduct data protection assessments for processing activities that pose a heightened risk of harm to consumers, such as processing for targeted advertising, selling personal data, or profiling.

    Consent for Sensitive Data : Businesses must get explicit consent before collecting, processing, or selling sensitive personal data, such as racial or ethnic origin, religious beliefs, health information, biometric data, and geolocation.

    Companies must have adequate data security practices based on the personal information they handle.

    Data Subject Access Requests (DSARs) : Businesses must respond to consumer requests regarding their personal data (e.g., access, correction, deletion) without undue delay, but no later than 45 days after receipt of the request.

    Sale of Data : If businesses sell personal data, they must disclose these practices to consumers and provide them with an option to opt out.

    Universal Opt-Out Compliance : Starting January 1, 2025, businesses must recognise universal opt-out mechanisms like the Global Privacy Control, enabling consumers to opt out of data collection and processing activities.

    Enforcement

    The Texas Attorney General can impose fines up to $25,000 per violation. There is no private right of action.

    Unique characteristics of the TDPSA

    The TDPSA stands out for its small business carve-out, lack of specific thresholds based on revenue or data volume, and requirements for recognising universal opt-out mechanisms starting in 2025. It also mandates consent for processing sensitive data and includes specific measures for data protection assessments and privacy notices.

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    Privacy notices across Florida, Oregon, and Texas

    All three laws include a mandate for privacy notices, though there are subtle variations in their specific requirements. Here’s a breakdown of these differences :

    FDBR privacy notice requirements

    Clarity : Privacy notices must clearly explain the collection and use of personal data.

    Disclosure : Notices must inform consumers about their rights, including the right to access, correct, delete their data, and opt-out of data sales and targeted advertising.

    Specificity : Businesses must disclose if they sell personal data or use it for targeted advertising.

    Security Practices : The notice should describe the data security measures in place.

    OCPA privacy notice requirements

    Comprehensive Information : Notices must provide information about the personal data collected, the purposes for processing, and any third parties that can access it.

    Consumer Rights : Must plainly outline consumers’ rights to access, correct, delete their data, and opt-out of data sales, targeted advertising, and profiling.

    Sensitive Data : To process sensitive data, businesses or entities must get explicit consent and communicate it.

    Universal Opt-Out : Starting January 1, 2026, businesses must recognise and honour universal opt-out mechanisms.

    TDPSA privacy notice requirements

    Detailed Notices : Must provide clear and detailed information about data collection practices, including the data collected and the purposes for its use.

    Consumer Rights : Must inform consumers of their rights to access, correct, delete their data, and opt-out of data sales and targeted advertising.

    High-Risk Processing : Notices should include information about any high-risk processing activities and the safeguards in place.

    Sensitive Data : To process sensitive data, entities and businesses must get explicit consent.

    What these laws mean for your businesses

    Businesses operating in Florida, Oregon, and Texas must now comply with these new data privacy laws. Here’s what you can do to avoid fines :

    1. Understand the Laws : Familiarise yourself with the specific requirements of the FDBR, OCPA, and TDPSA, including consumer rights and business obligations.

    1. Implement Data Protection Measures : Ensure you have robust data security measures in place. This includes conducting regular data protection assessments, especially for high-risk processing activities.

    1. Update Privacy Policies : Provide clear and comprehensive privacy notices that inform consumers about their rights and how their data is processed.

    1. Obtain Explicit Consent : For sensitive data, make sure you get explicit consent from consumers. This includes information like health, race, sexual orientation, and more.

    1. Manage Requests Efficiently : Be prepared to handle requests from consumers to access, correct, delete their data, and opt-out of data sales and targeted advertising within the stipulated timeframes.

    1. Recognise Opt-Out Mechanisms : For Oregon, businesses must be ready to implement and recognise universal opt-out mechanisms by January 1, 2026. In Texas, opt-out enforcement begins in 2026. In Florida, the specific opt-out provisions began on July 1, 2024.

    1. Stay Updated : Keep abreast of any changes or updates to these laws to ensure ongoing compliance. Keep an eye on the Matomo blog or sign up for our newsletter to stay in the know.

    Are we headed towards a more privacy-focused future in the United States ?

    Florida, Oregon, and Texas are joining states like California, Virginia, Colorado, Connecticut, Utah, Iowa, Indiana, Tennessee, and Montana in strengthening consumer privacy protections. This trend could signify a shift in US policy towards a more privacy-focused internet, underlining the importance of consumer data rights and transparent business practices. Even if these laws do not apply to your business, considering updates to your data and privacy policies is wise. Fortunately, there are tools and solutions designed for privacy and compliance to help you navigate these changes.

    Avoid fines and get better data with Matomo

    Most analytics tools don’t prioritize safeguarding user data. At Matomo, we believe everyone has the right to data sovereignty, privacy and amazing analytics. Matomo offers a solution that meets privacy regulations while delivering incredible insights. With Matomo, you get :

    100% Data Ownership : Keep full control over your data, ensuring it is used according to your privacy policies.

    Privacy Protection : Built with privacy in mind, Matomo helps businesses comply with privacy laws.

    Powerful Features : Gain insights with tools like heatmaps, session recordings, and A/B testing.

    Open Source : Matomo’s is open-source and committed to transparency and customisation.

    Flexibility : Choose to host Matomo on your servers or in the cloud for added security.

    No Data Sampling : Ensure accurate and complete insights without data sampling.

    Privacy Compliance : Easily meet GDPR and other requirements, with data stored securely and never sold or shared.

    Disclaimer : This content is provided for informational purposes only and is not intended as legal advice. While we strive to ensure the accuracy and timeliness of the information provided, the laws and regulations surrounding privacy are complex and subject to change. We recommend consulting with a qualified legal professional to address specific legal issues related to your circumstances. 

  • Screen recording with ffmpeg has stuttering [closed]

    7 novembre 2024, par Adam Labuš

    I am recording with ffmpeg like so : ffmpeg -f x11grab -probesize 18M -framerate 30 -video_size 1920x1080 -i :0.0+0,0 -f pulse -i  -c:v libx264 -preset ultrafast -c:a aac .mkv

    


    Problem :

    


    Usually at the start the video starts to stutter, sometimes stuttering up to 20 seconds, each frame during this stuttering is shown for 1-5 seconds. Example video : https://drive.google.com/file/d/1uwdaFboCO2qNALgaPC8JD15W64BE3VyY/view?usp=sharing

    


    Diagnostics :

    


    Machine details :

    


    OS: Fedora Linux 41 (Server Edition) x86_64
Host: HP ProDesk 600 G2 DM
Kernel: Linux 6.11.5-300.fc41.x86_64
WM: Openbox (X11)
CPU: Intel(R) Core(TM) i5-6500T (4) @ 3.10 GHz
GPU: Intel HD Graphics 530 @ 1.10 GHz [Integrated]
Memory: 884.62 MiB / 15.49 GiB (6%)
Swap: 0 B / 8.00 GiB (0%)
Disk (/): 5.45 GiB / 14.94 GiB (37%) - xfs


    


    My gpu(20%), cpu (50%), disk utilisation is always in well perfect range - I tried stress testing gpu, ram, cpu and disk while recording and it had no effect on the recording. I tried recording to ramdisk. I always have 10gb ram available. I ran the same command on my laptop (hp 850 g5) and computer and encountered no stuttering at all.

    


    If it matters the machine is running bare Xorg and openbox display manager

    


    I have tried :

    


      

    • setting fps_mode to cfr - because the frame rate does fluctuate around 29-30 at the start
    • 


    • setting fps_mode to vfr
    • 


    • setting fps_mode to passthrough
    • 


    • setting cfr all the way to 40
    • 


    • presets veryfast, faster
    • 


    • increasing thread_queue_size
    • 


    • async=1
    • 


    


    Ffmpeg Log :

    


    ffmpeg version 7.0.2 Copyright (c) 2000-2024 the FFmpeg developers                                                                                                                                                                                                              
  built with gcc 14 (GCC)                                                                                                                                                                                                                                                       
  configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-swi
tches -pipe -Wall -Wno-complain-wrong-lang -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=x86-64 
-mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -mtls-dialect=gnu2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer' --extra-ldflags='-Wl,-z,relro -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,-z,now -specs=/usr/lib/rpm/redhat/re
dhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,--build-id=sha1 ' --extra-cflags=' -I/usr/include/rav1e' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --enable-chromaprint --enable-fontcon
fig --enable-frei0r --enable-gcrypt --enable-gnutls --enable-ladspa --enable-lcms2 --enable-libaom --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libass --enable-libbluray --enable-libbs2b --enable-libcodec2 --enable-libcdio --enable-libdrm --enabl
e-libjack --enable-libjxl --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libharfbuzz --enable-libilbc --enable-libmp3lame --enable-libmysofa --enable-nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenh264 --enable-libopenjpeg --enabl
e-libopenmpt --enable-libopus --enable-libpulse --enable-libplacebo --enable-librsvg --enable-librav1e --enable-librubberband --enable-libqrencode --enable-libsmbclient --enable-version3 --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh
 --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-version3 --enable-vapoursynth --enable-libvpx --enable-vulkan --enable-libshaderc --enable-libwebp --enable-l
ibx264 --enable-libx265 --enable-libxvid --enable-libxml2 --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-avfilter --enable-libmodplug --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-strip
ping --shlibdir=/usr/lib64 --enable-lto --enable-libvpl --enable-runtime-cpudetect                                                                                                                                                                                              
  libavutil      59.  8.100 / 59.  8.100                                                                                                                                                                                                                                        
  libavcodec     61.  3.100 / 61.  3.100                                                                                                                                                                                                                                        
  libavformat    61.  1.100 / 61.  1.100                                                                                                                                                                                                                                        
  libavdevice    61.  1.100 / 61.  1.100                                                                                                                                                                                                                                        
  libavfilter    10.  1.100 / 10.  1.100                                                                                                                                                                                                                                        
  libswscale      8.  1.100 /  8.  1.100                                                                                                                                                                                                                                        
  libswresample   5.  1.100 /  5.  1.100                                                                                                                                                                                                                                        
  libpostproc    58.  1.100 / 58.  1.100                                                                                                                                                                                                                                        
Input #0, x11grab, from ':0.0+0,0':                                                                                                                                                                                                                                             
  Duration: N/A, start: 1730923728.417205, bitrate: 1990656 kb/s                                                                                                                                                                                                                
  Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1080, 1990656 kb/s, 30 fps, 29.92 tbr, 1000k tbn                                                                                                                                                                 
[aist#1:0/pcm_s16le @ 0x55a29c634a40] Guessed Channel Layout: stereo                                                                                                                                                                                                            
Input #1, pulse, from 'auto_null.monitor':                                                                                                                                                                                                                                      
  Duration: N/A, start: 1730923728.521148, bitrate: 1536 kb/s                                                                                                                                                                                                                   
  Stream #1:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s                                                                                                                                                                                                               
Stream mapping:                                                                                                                                                                                                                                                                 
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))                                                                                                                                                                                                                     
  Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native))                                                                                                                                                                                                                      
Press [q] to stop, [?] for help                                                                                                                                                                                                                                                 
[libx264 @ 0x55a29c627f00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2                                                                                                                                                                                
[libx264 @ 0x55a29c627f00] profile High 4:4:4 Predictive, level 4.0, 4:4:4, 8-bit                                                                                                                                                                                               
[libx264 @ 0x55a29c627f00] 264 - core 164 r3108 31e19f9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - 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 tre
llis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 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, matroska, to '/tmp/tmp38n41uwz.mkv':                                                                                                                                                                                                                                 
  Metadata:                                                                                                                                                                                                                                                                     
    encoder         : Lavf61.1.100                                                                                                                                                                                                                                              
  Stream #0:0: Video: h264 (H264 / 0x34363248), yuv444p(progressive), 1920x1080, q=2-31, 29.92 fps, 1k tbn                                                                                                                                                                      
      Metadata:                                                                                                       
        encoder         : Lavc61.3.100 libx264                                                                        
      Side data:                                                                                                      
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A                                                 
  Stream #0:1: Audio: aac (LC) ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, fltp, 128 kb/s                            
      Metadata:                                                                                                       
        encoder         : Lavc61.3.100 aac                                                                            
frame=  915 fps= 24 q=29.0 size=    7936KiB time=00:00:35.79 bitrate=1816.0kbits/s dup=0 drop=167 speed=0.929x        
                                                                                                                      
[q] command received. Exiting.