I am currently experiencing a small problem with GStreamer, here are more details: Configuration: Intel i7-6700 Intel HD Graphics 530 Ubuntu 18.04 LTS GStreamer1.0 VAAPI plugin I receive a UDP stream from a video source, this stream is sent in RAW UYVY format. Here is my command line to decode it: gst-launch-…
Tag: video
problem using ffmpeg drawtext for rtl languge
i use this command to write on a video: it work fine when i don’t have numbers and symbols(!,?,$ and …) in first and end of my text. my lang is right to left and this commmand not support rtl. what i must do to solve this problem ? Answer First of all, the issue isn’t really rtl or FFMPEG
ffmpeg img to video = Could find no file with path
i try to convert img to mp4 with ffmpeg. i try to do it like this: and get an error: The jpg file-name format is: anyone can help, where is mistake?… Thanks! Answer To match all jpg files in /tmp/stream use: For more specificity use additional glob patterns. For example, if you only want images from 201…
What does the “D:, H:, V:” means in fbset?
I search many data on web but I can’t find what does the “D: 148.500 MHz, H: 67.500 kHz, V: 60.000 Hz” means in the below example? mode “1920×1080-60” # D: 148.500 MHz, H: 67.500 kHz, V: 60.000 Hz geometry 1920 1080 1920 3240 32 timings 6734 148 88 36 4 44 5 accel false rgba…
Unable to route webcam video to virtual video device on Linux (via OpenCV)
I would like to put a video overlay onto an incoming webcam stream via OpenCV. As a first step I’m trying to stream the incoming video from a webcam at /dev/video0 to a virtual video device at /dev/video1 (v4l2loopback). Unfortunately I’m not able to forward the webcam stream to the v4l2loopback d…
How can low frame rate video be made to look more smooth?
I am trying to clean up a video that was recorded in 2003 in low-light conditions on what was possibly a cameraphone. The video has been cleaned up somewhat (cropped, logos removed and stabilized), but it remains quite jerky, due in large part to its low frame rate. What are some tricks that might clean up th…
FFmpeg not copying all audio streams
I’m having trouble getting ffmpeg to copy all audio streams from a .mp4 file. After hours of searching online, it appears this should copy all streams (as shown in example 4 here): in.mp4 contains 3 streams: Video Audio track 1 Audio track 2 out.mp4 (which should be identical to in.mp4) contains only 2 …
Combining videos with ffmpeg using crossfades and plain cuts
I am writing a script to combine/slice arbitrary video files from S3 into one output video. So far, I am doing this by first trimming the videos to their proper length using ffmpeg -i input-X.mp4 -ss start -t duration slice-X.mp4 and recombining the resultant slices with the ffmpeg concat filter. I want to be…
How can I run command line FFMPEG and accept multiple pipes (video and audio) without blocking on the first input?
I’m trying to mux h264 and aac created with MediaCodec using FFMPEG, and also use FFMPEG’s RTMP support to send to youtube. I’ve created two pipes, and am writing from java (android) through WriteableByteChannels. I can send to one pipe just fine (accepting null audio) like this: YouTube str…
HLS (apple http stream) video download
I have video in HLS format. And I would like to save it to disk. I want to see it with VLC offline with no adds. 🙂 Is there a simple way to do it? ( I am using Linux mint so it easy to run scripts) Thanks in advance. Answer The tricky part is to find the cookie given