29 June

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

• 00:59
  How to get the frame rate in android exoplayer programmatically? - YeJong Choe Newest 'ffmpeg' Questions - Stack Overflow
  I want to get the live stream frame rate using android exoplayer programmatically. I did try following code to get the frame rate. exo_player.addAnalyticsListener(new AnalyticsListener() ⓐOverride public void onTracksChanged(EventTime eventTime, TrackGroupArray trackGroups, TrackSelectionArray trackSelections) if(trackGroups!=null && !trackGroups.isEmpty()) for(int i=0;i but in my code, i can get -1. this is wrong. Is there a way to get the video frame in exoplayer (...)

28 June

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

• 22:57
  Thumbnails from S3 Videos using FFMPEG - "No such file or directory: '/bin/ffmpeg'" - Nico Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to generate thumbnails from videos in an S3 bucket every x frames by following this documentation: https://aws.amazon.com/blogs/media/processing-user-generated-content-using-aws-lambda-and-ffmpeg/ I am at the point where I'm testing the Lambda code provided in the documentation, but receive this error in CloudWatch Logs: Here is the portion of the Lambda code associated with this error: Any help is appreciated. (...) -- https://aws.amazon.com/blogs/media/processing-user-generated-content-using-aws-lambda-and-ffmpeg/, ,
• 21:35
  How to pass BGR NumPy arrays directly to FFMPEG with CUDA support - Ξένη Γήινος Newest 'ffmpeg' Questions - Stack Overflow
  I am using cv2 to edit images and create a video from the frames with FFMPEG. See this post for more details. The images are 3D RGB NumPy arrays (shape is like [h, w, 3]), they are stored in a Python list. Yep, I know cv2 has a VideoWriter and I have used it before, but it is very inadequate to meet my needs. Simply put, it can only use an FFMPEG version that comes with it, that version does not support CUDA and uses up all CPU time when generating the videos while not using any GPU time at all, the output is way too big and I can't pass many FFMPEG parameters to the (...) -- here, here, there, this
• 20:55
  FFMPEG C++ select GPU - user4212264 Newest 'ffmpeg' Questions - Stack Overflow
  AVDictionary* options = nullptr; av_dict_set(&options, "hwaccel", "cuvid", 0); av_dict_set_int(&options, "hwaccel_device", 2, 0); Even though I specify hwaccel device to be 2, it still runs on GPU 0. How can I fix this?
• 20:52
  ffmpeg -itsoffset does not work on a prores mov - friendlygiraffe Newest 'ffmpeg' Questions - Stack Overflow
  Using -itsoffset works perfectly in ffmpeg with mp4: ffmpeg -i video.mp4 -itsoffset 0.355 -i video.mp4 -map 0:v -map 1:a -c copy -y video_offset.mp4 However, with a prores mov it has no affect, throws no errors either: ffmpeg -i proresvideo.mov -itsoffset 0.355 -i proresvideo.mov -map 0:v -map 1:a -c copy -y proresvideo_offset.mov -- -itsoffset
• 20:30
  How to extract MXF file data? - Rex Newest 'ffmpeg' Questions - Stack Overflow
  Is there any way to extract MXF (Material Exchange Format) file data using python? All I want to do is get data like video duration, actual video stream and if possible the voice in mp3 or any audio format from an MXF file.
• 20:20
  Node merge multiple .m3u8 playlist as single stream - jr3000 Newest 'ffmpeg' Questions - Stack Overflow
  I have two .m3u8 files example: file.m3u8 and file2.com. The streams are not live, I am using npm m3u8 package to possible create a dynamic playlist. var m3u8 = require('m3u8'); var fs = require('fs'); const express = require("express") const app = express() const port = 8080 const cors = require("cors") const M3U8 = require("m3u8"); app.use(cors()) const async = require("async") app.get('/', (req, res) => var playlist = M3U8.M3U.create(); playlist.set('targetDuration', (...)
• 20:15
  How to format string the ffmpeg arguments to pass the arguments to a textBox? - Sharo SA Newest 'ffmpeg' Questions - Stack Overflow
  I created this form : I want to use the variable ffmpegArguments to pass the arguments from the textBox to the ffmpeg class arguments. the problem is that in the ffmpeg class i'm using the variables : FileName and Framerate so how can i format the input from the textBox to the ffmpeg arguments with the FileName and Framerate variables ? In the ffmpeg class : using System; using System.Collections.Generic; using System.Diagnostics; using System.Drawing; using System.IO; using System.IO.Pipes; using System.Linq; using (...) --
• 19:06
  c++ lib ffmpeg sws_scale segfault [closed] - pmike Newest 'ffmpeg' Questions - Stack Overflow
  I want to write a mpeg file with c++ and ffmpeg. in the constructor of this mpeg-writing class there is : _frame_yuv= av_frame_alloc(); _frame_yuv->format= AV_PIX_FMT_YUV420P; _frame_yuv->width= _width; _frame_yuv->height= _height; av_frame_get_buffer(_frame_yuv, 0); _frame_rgb= av_frame_alloc(); _frame_rgb->format= AV_PIX_FMT_RGB24; _frame_rgb->width= _width; _frame_rgb->height= _height; av_frame_get_buffer(_frame_rgb, 0); _sws_context= sws_getContext(_width, _height, AV_PIX_FMT_RGB24, _width, _height, (...)
• 18:46
  How to crop a video in the shape of a square, but crop the square itself at different positions in the video via ffmpeg? - Ilya Pesterev Newest 'ffmpeg' Questions - Stack Overflow
  I have about 100 videos All the videos have the same length — 17 seconds. In the first part of the video from 0 to 5 seconds I need to crop a square in one position In the second part of the video from 5 to 17 seconds I need to crop a square in a different position I have attached an image for clarity. How can I automate this process via ffmpeg? Image for clarification -- Image for clarification
• 18:39
  Change White to Black in a GIF or crop GIF into a circle with Python - tcleckner Newest 'ffmpeg' Questions - Stack Overflow
  I have a GIF that I am trying to change all the white pixels to black. Not sure where to start. Alternatively the GIF could be cropped to just the circle graphic on the left side of the GIF. I have used ffmpeg-python to crop the GIF down to a square around the circle but have yet to be able to crop it to a circle. ffmpeg.crop(stream, 46,117,390,390) Any insight is appreciated. -- GIF
• 18:28
  How do I use ffmpeg to overlay an effect for a certain amount of time? - A A Newest 'ffmpeg' Questions - Stack Overflow
  There is a command for FFMPEG that applies a filter to the video ffmpeg -threads 2 -y -i 6.mp4 -vf rgbashift=rh=20:bh=-20 -hide_banner -y -vcodec mpeg4 -crf 23 -b:v 1000K -maxrate 1500K -bufsize 500K 7.mp4 The question is how to make it overlap a certain time For example from 00:01:10 to 00:02:20 and then from 00:03:01 to 00:04:00?
• 18:13
  Extract MXF file data using python - Rex Newest 'ffmpeg' Questions - Stack Overflow
  Is there any way to extract MXF file data using python? All I want to do is get data like video duration, actual video stream and if possible the voice in mp3 or any audio format from an MXF file.
• 18:05
  Record audio and video simultaneously with ffmpeg in raspberry pi - mojtaba Newest 'ffmpeg' Questions - Stack Overflow
  I am saving audio and video in separate files using Raspberry Pi and USB microphone connected to Raspberry Pi. My project is to record audio and video simultaneously and save in .flv file using ffmpeg. I can use the following command to record and save audio and video at the same time But sound and video are not synchronized. command: raspivid -t 0 -w 960 -h 480 -fps 24 -b 5000000 -o - | ffmpeg -i - -f alsa -ac 2 -i hw:2,0 -map 0:0 -map 1:0 -vcodec copy -acodec aac -strict -2 test.flv Please guide me to solve the problem and suggest a solution if there is (...)
• 16:15
  CVAT error during installation of development version - Raman Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to install development version of CVAT according to official instruction but struggling at the step of requirements.txt applying: pip install -r cvat/requirements/development.txt ... with following error: Skipping wheel build for av, due to binaries being disabled for it. Skipping wheel build for datumaro, due to binaries being disabled for it. Installing collected packages: wrapt, tf-estimator-nightly, termcolor, tensorboard-plugin-wit, Shapely, rules, rope, rjsmin, rcssmin, pytz, pyasn1, patool, mistune, mccabe, libclang, keras, itypes, (...) -- official instruction, https://github.com/openvinotoolkit/cvat/issues/4406

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 10:16
  checkasm: Provide enough alignment in the new motion test - Martin Storsjö git.videolan.org Git - ffmpeg.git/rss log
  checkasm: Provide enough alignment in the new motion test This fixes the checkasm test in some setups on x86. Signed-off-by: Martin Storsjö <martinⓐmartin.st> [DH] tests/checkasm/motion.c

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

• 15:12
  Is there a way to specify the decoder in ffprobe - Mustafa Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffprobe to extract information from a video file using following command on AWS VT1 that has hardware accelerated decoders available ffprobe -of json -show_streams -show_frames -show_format -i video.mp4 The above command still performs decoding using CPU. I know that in case of ffmpeg, I can specify the decoder like this ffmpeg -c:v mpsoc_vcu_h264 -i video.mp4 -f null - I was wondering if it is possible to specify a decoder to ffprobe as (...)
• 12:37
  how can I convert a stack of PNGs with transparency to a video playable with Keynote - John Smith Newest 'ffmpeg' Questions - Stack Overflow
  I used to convert a stack of PNGs with alpha transparency using ffmpeg: ffmpeg -i frame_%03d.png -vcodec png output.mov I have an old mov where this worked. Now I tried to do that again a while later (on an M1 Mac now). Now it doesn't work anymore. Here are the file properties: property old movie (works) new movie (does not work) resolution 378 × 378 1600 × 1000 codec Apple ProRes 4444 PNG alpha channel yes ? color profile SD (...)
• 13:06
  preserve alpha channel when changing resolution in webm vp9 ffmpeg - Patrick Vellia Newest 'ffmpeg' Questions - Stack Overflow
  I am running the streamio-ffmpeg gem in my Ruby code here to operate the FFMPEG command. Setting a Webm with codec VP9 that has alpha transparent frames in it as the input, I want to change the resolution from 1080p to 720p and preserve the alpha transparent frames when outputting to the same format/codec. I've tried it several different ways, but every time it outputs with a black background where the alpha transparent background should be, but ffprobe shows that ALPHA_MODE is set to 1. Here's the command that streamio-ffmpeg tells the (...)
• 07:52
  How to do text alignment on box in ffmpeg? - Dinesh Reddy Newest 'ffmpeg' Questions - Stack Overflow
  Drawbox with drawtext ffmpeg -y -i skate.mp4 -filter_complex "drawbox=x=645.7538994800693:y=449.2201039861352:w=700:h=169:color=redⓐ1:t=fill,drawtext=enable='between(t,0,3)':fontfile='344c235b-9bf7-4b13-ad99-ab230b473577.ttf':text='Hello world':fontsize=150:line_spacing=3:x=645.7538994800693:y=449.2201039861352:fontcolor=#000000:borderw=0:bordercolor=#ffffff,rotate=a=0*PI/180:ow=rotw(0*PI/180):oh=roth(0*PI/180):c=blackⓐ0" output.mp4 I draw the box using drawbox filter and written the text also but i need to do text alignment in the box like center, (...) -- Drawbox with drawtext