20 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 10:59
  How to run FFMPEG with --enable-libfontconfig on Amazon Lambda - Adrien Kaczmarek Newest 'ffmpeg' Questions - Stack Overflow
  Problem I want to run FFmpeg on AWS Lambda (Amazon Linux 2) with the configuration --enable-libfontconfig enable. Situation I already have FFmpeg running on AWS Lambda without the configuration --enable-libfontconfig. Here is the step I took to run FFmpeg on AWS Lambda (see official guide): Connect to Amazon EC2 running on AL2 (environment used by Lambda for Python 3.11) Download and package FFmpeg from John Van Sickle Create a Lambda Layer with FFmpeg Unfortunately, the version built by John Van Sickle doesn't have the configuration (...) -- see official guide, John Van Sickle, installation guide
• 08:26
  How to skip start frames with ffmpeg - Darko_Milicic Newest 'ffmpeg' Questions - Stack Overflow
  I have using ffmpeg to create short preview of videos... $length = $length_video/5; $ffmpeg_path." -i ".$content." -vf select='lt(mod(t\\,".$length.")\\,1)',setpts=N/FRAME_RATE/TB -af aselect='lt(mod(t\\,".$length.")\\,1)',asetpts=N/SR/TB -an ".$content_new."; Actually this will create 5sec. video. and problem is because first frame is extracted from 0-1 sec. There is any chance to skip first frame and extract next 5? Problem is because first frame is actually useless because of video (...)

19 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:12
  Blend selected frames from a video and output an image with ffmpeg [closed] - xnx Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to blend a few frames from a video and output a png image using this command: ffmpeg -i input.mp4 -vf "select=between(n\\,2\\,5),blend=all_mode=average" -frames:v 1 out.png I get this error, but can't make sense of it: Simple filtergraph ... was expected to have exactly 1 input and 1 output. However, it had 2 input(s) and 1 output(s). Please adjust, or use a complex filtergraph (-filter_complex) instead. What am I doing (...)
• 18:45
  SNAP: Simulation and Neuroscience Application Platform [closed] - S_S Newest 'ffmpeg' Questions - Stack Overflow
  Is there any documentation/help manual on how to use SNAP (Simulation and Neuroscience Application Platform)1. I wanted to run the Motor Imagery sample scenario with a .avi file for the stimulus instead of the image. How can that be done? The following error is obtained when using the AlphaCalibration scenario which gives code to play an avi file.Any help appreciated :movies:ffmpeg(warning): parser not found for codec indeo4, packets or times may be invalid. :movies:ffmpeg(warning): max_analyze_duration 5000000 reached at 5000000 :movies(error): Could (...) -- 1

ginger’s thoughts http://blog.gingertech.net/

• 21:48
  SWAY at RFWS using Coviu - silvia ginger’s thoughts
  A SWAY session by Joanne of Royal Far West School. http://sway.org.au/ via https://coviu.com/ SWAY is an oral language and literacy program based on Aboriginal knowledge, culture and stories. It has been developed by Educators, Aboriginal Education Officers and Speech Pathologists at the Royal Far West School in Manly, NSW. Category: Array Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post SWAY at RFWS using Coviu first appeared on ginger's thoughts.
• 21:48
  PARADISEC catalog for Users - silvia ginger’s thoughts
  This screencast shows how a user of the PARADISEC catalog logs in and explores the collections, items and files that the archive contains. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Users first appeared on ginger's thoughts.
• 21:48
  PARADISEC catalog for Collectors - silvia ginger’s thoughts
  Screencast of how to use the PARADISEC catalog for managing and publishing collections. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Collectors first appeared on ginger's thoughts.
• 21:48
  PARADISEC catalog for Administrators - silvia ginger’s thoughts
  Screencast of how a PARADISEC administrator uses the PARADISEC catalog for managing the consistency of metadata and staying on top of uploaded files. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Administrators first appeared on ginger's thoughts.
• 21:48
  Silvia Pfeiffer Live Stream - silvia ginger’s thoughts
  Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post Silvia Pfeiffer Live Stream first appeared on ginger's thoughts.

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:24
  Could not update timestamps for discarded samples - skltynve Newest 'ffmpeg' Questions - Stack Overflow
  I have a function for decoding audio in C using ffmpeg: int read_and_decode(const char *filename, float **audio_buffer, int *sample_rate, int *num_samples) AVFormatContext *fmt_ctx = NULL; AVCodecContext *codec_ctx = NULL; AVCodec *codec; AVPacket packet; AVFrame *frame = av_frame_alloc(); if (!frame) fprintf(stderr, "Could not allocate memory for AVFrame\\n"); return -1; int audio_stream_index = -1, ret; if (avformat_open_input(&fmt_ctx, filename, NULL, NULL) != 0) fprintf(stderr, "Could not open the file: %s\\n", (...)
• 18:18
  Error trying to decode 4K video using NVDEC - Nestoraj Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert a 4K HEVC MKV file of 70GB into another HECV file but with less size. I am using FFmpeg with Nvidia acceleration but when I execute the following command an error appears: ffmpeg -y -vsync 0 -hwaccel_device 0 -hwaccel cuvid -c:v hevc_cuvid -i input.mkv -c:a copy -c:v hevc_nvenc -preset slow -b:v 10M -bufsize 10M -maxrate 15M -qmin 0 -g 250 -bf 2 -temporal-aq 1 -rc-lookahead 20 -i_qfactor 0.75 -b_qfactor 1.1 output.mkv The error is: [hevc_nvenc ⓐ 0000021036b0d000] Provided device doesn't support required NVENC features Error (...) --
• 18:16
  Problems with modifying encoder metadata with FFMPEG - yrcje Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to change FFMPEG encoder writing application with FFMPEG -metadata and for whatever reason, it's reading the input but not actually writing anything out. map_metadata -metadata:s:v:0 -metadata writing_application, basically every single stack overflow and stack exchange thread, but they all won't write to the file at all. ffmpeg -i x.mp4 -s 1920x1080 -r 59.94 -c:v h264_nvenc -b:v 6000k -vf yadif=1 -preset fast -fflags +bitexact -flags:v +bitexact -flags:a +bitexact -ac 2 x.mp4 ffmpeg -i x.mp4 -c:v copy -c:a copy -metadata (...)
• 18:13
  Decoder error not supported error when render 360 video on web application - Mattia Pompita Newest 'ffmpeg' Questions - Stack Overflow
  I'm developing a simple scene with A-Frame and React.JS where there is a videosphere that will create and render when video are fully loaded and ready to play. My goal is to render 4k (to device who can reproduce it) video on videosphere to show at the users the environment. On desktop versions all works fine also with 4K videos while on mobile works only for 1920x1080. I already check if my phone can render a 4k texture video and it can render untill 4096, I checked also that video.videoWidth are 4096. The error I have is with decoder MediaError code: 4, (...)
• 16:21
  FFmpeg dynamic cropping using sendcmd correct syntax? - Sulli Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to dynamically crop a video using FFmpeg's sendcmd filter based on coordinates specified in a text file, but the crop commands do not seem to be taking effect. Here's the format of the commands I've tried and the corresponding FFmpeg command I'm using. Following the documentation https://ffmpeg.org/ffmpeg-filters.html#sendcmd_002c-asendcmd, commands in the text file (coordinates.txt) like this: 0.05 [enter] crop w=607:h=1080:x=0:y=0; 0.11 [enter] crop w=607:h=1080:x=0:y=0; ... Ffmpeg command: ffmpeg -i '10s.mp4' (...) -- https://ffmpeg.org/ffmpeg-filters.html#sendcmd_002c-asendcmd