9 December

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

• 00:50
  How to sync multiple rtsp inputs in ffmpeg? - KOMsandFriends Newest 'ffmpeg' Questions - Stack Overflow
  I am combining multiple rtsp streams from local network cameras to a single output using ffmpeg. In the resulting video, the videos are out of sync. ffmpeg -loglevel warning \\ -f image2 -loop 1 \\ -i logo.png \\ -rtsp_transport tcp -thread_queue_size 1024 \\ -i "rtsp://10.0.0.1" \\ -rtsp_transport tcp -thread_queue_size 1024 \\ -i "rtsp://10.0.0.2" \\ -rtsp_transport tcp -thread_queue_size 1024 \\ -i "rtsp://10.0.0.3" \\ -filter_complex "[3:v][2:v][0:v][1:v]xstack=inputs=4:layout=0_0|w0_0|0_h0|w0_h0[v]" \\ -map "[v]" \\ -filter_complex "[1:a][1:a]amerge=inputs=2[aout]" -map "[aout]" \\ -vcodec (...)
• 00:28
  how to get duration of video using ffmpeg? [duplicate] - Hamid Bahmanabady Newest 'ffmpeg' Questions - Stack Overflow
  This question already has an answer here: How to extract duration time from ffmpeg output? 13 answers I write this command in commandPrompt but that can not get Duration ffmpeg -i d:\\12.flv 2>&1 | grep \\"Duration\\" I have this error 'grep ' is not recognized as an internal or external command, operable programe or batch file What is problem?

8 December

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

• 22:52
  How to split multiple videos 2.24 seconds before the end - Leendert Newest 'ffmpeg' Questions - Stack Overflow
  I have a folder with 100 videos, I need to split all videos into 2, the split needs to happen 2 seconds before the end of every video. I want to keep both parts of the video after the split.
• 22:42
  node-fluent-ffmpeg doesn't resize videos correctly when given specific size - Yagiz Newest 'ffmpeg' Questions - Stack Overflow
  Version information fluent-ffmpeg version: 2.1.2 ffmpeg version: ffmpeg version 4.1.3 OS: mac os x mojave 10.14.3 Code to reproduce First cut the videos using this command: const cutVideo = async (currentWord) => return new Promise((resolve, reject) => console.log('cutting video', currentWord.file) ffmpeg(currentWord.file) .videoCodec('libx264') // .addOptions('-vf "setdar=ratio=16/9:max=1000"') .on('start', command => console.log('command', command)) .on('error', reject) .on('end', resolve) .withSize('640x360') .withAspect('16:9') .applyAutopadding(true, 'black') (...)
• 22:30
  Windows - FFmpeg - How to map a jpg file to video stream 0:0 and include only audio stream 0:2 and not stream 0:1 and 0:2 together - slyfox1186 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to write a batch script that begins by extracting a thumbnail "Cover.jpg" from an mkv video. My end goal is to have this script recursively loop a folder full of videos to encode them all in one go. :: create cover art jpg for %%G in (*.mkv) do ( %FF% -hide_banner -ss 30 -y -i "%%G" -vframes 1 -an Cover.jpg ) Then I am trying to encode the 4K mkv video that I got the jpg thumbnail from to 1920x1080 resolution instead of it's native 4K to make it easier to play back on my home plex server. I have surround sound 6 channel speaker system so I want to take audio stream 0:2 which (...)
• 18:02
  How to write H264 raw stream into mp4 using ffmpeg directly - Yelsin Newest 'ffmpeg' Questions - Stack Overflow
  I want to wrap the H264 Nalus(x264 encoded) into mp4 using ffmpeg(SDK 2.1), but the output mp4 file could not play. I don't know how to set the pts and dts. Here's my code, using the code from Raw H264 frames in mpegts container using libavcodec and muxing.c from www.ffmpeg.org. My H264 stream has no B-Frame, every nalu starts with 00 00 00 01,the stream begins with sps pps then the h264 data. #include "stdafx.h" #include #include #include "Stream2Mp4.h" #include #include #include #include #include #include #define STREAM_FRAME_RATE 25 #define STREAM_PIX_FMT AV_PIX_FMT_YUV420P /* default (...)
• 17:07
  Why i'm failing to download mp4 file using youtube-dl in python - Joao Newest 'ffmpeg' Questions - Stack Overflow
  Python noob :( I created a script that downloads any youtube video. Then the script inserts a subtitle into the video and that works fine. However, I have a problem, I can't make the script always download the video in mp4. Most of the time it is downloaded in mkv and i can't understand why that happens and how can I change the code in order to always download the video in the format I prefer. The function in charge to download the video is this one: def video_download(): #global resolution try: print(linkvideo) ydl_opts = 'format': 'bestvideo[ext=mp4]+bestaudio/best', 'outtmpl': (...)
• 17:00
  Converting an mp4 to mp3: file not found - Hywel Griffiths Newest 'ffmpeg' Questions - Stack Overflow
  I've used the following code to convert an mp4 to mp3 public static void main(String[] args) throws IOException, InterruptedException String line; String mp4File = "/Users/hywelgriffiths/Documents/home/pictures/Test.mp4"; String mp3File = "/Users/hywelgriffiths/Documents/home/pictures/Audio.mp3"; // ffmpeg -i input.mp4 output.avi as it's on www.ffmpeg.org String cmd = "ffmpeg -i " + mp4File + " " + mp3File; Process p = Runtime.getRuntime().exec(cmd); BufferedReader in = new BufferedReadernew InputStreamReader(p.getErrorStream())); while ((line = in.readLine()) != null) (...)
• 16:37
  What is the process of converting an image stream into an H.264 live video stream? - LacombeJ Newest 'ffmpeg' Questions - Stack Overflow
  How does live streaming, using any protocol/codec, work from end-to-end? I have been searching google, youtube, FFMPEG documentation, OBS source code, stack overflow, but still cannot understand how live video streaming works, from videos. So I am trying to capture desktop screenshots and convert that to a live video stream that is H.264 encoded. What I know how to do: Capture screenshot images using Graphics.CopyFromScreen with C# on some loop Encode the bits and save images as JPEG files Send JPEG image in base64 one-at-a-time and write it on a named pipe server Read image buffer from (...)
• 14:45
  FFmpeg audio channel rematrix (5.1 to stereo) - Flock Dawson Newest 'ffmpeg' Questions - Stack Overflow
  I've got a (very large!) Apple ProRes 422 file with 16ch audio. To be able to use it on a less powerful computer, I'd like to convert it to a standard MP4 file (h264 video codec, stereo audio). The original file has 16 channels of audio, however, and FFmpeg gives an error when I try to convert it ('Rematrix is needed'). How do I do rematrixing of audio channels? Are there additional steps needed? This is the FFmpeg command I used: ffmpeg -y -i Capture0000.mov -vcodec libx264 -vb 2000k -pix_fmt yuv420p -coder 0 -profile:v baseline -acodec libfaac -ab 128k /tmp/out.mp4 This is the FFmpeg (...)
• 14:32
  How do you convert an entire directory with ffmpeg? - Eugene Newest 'ffmpeg' Questions - Stack Overflow
  How do you convert an entire directory/folder with ffmpeg via command line or with a batch script?
• 12:41
  FFMPEG, any video to 16:9 - Universal Newest 'ffmpeg' Questions - Stack Overflow
  Help me find a command or script that will convert any video to 16:9, h264 and ~2500kbps. I have a server where people upload videos of different quality, size and length. It can be either 640x480 or 1216x2160. Ultimately, I need to get any resolution to 16:9 (with black borders, if needs) and bitrate without visible loss of quality, which will be acceptable for online broadcasting. I have this command, but it does not check the resolution of the video. And if the video was 560x448 1000kbps and 700mb, then after conversion it will be 1280x720 3000kbps and 1.5gb, that's not right. ffmpeg (...)
• 07:57
  FFMPEG: How To Break steam and Retry Again Automatically - Varun Newest 'ffmpeg' Questions - Stack Overflow
  The Live Stream is in m3u8 format I am Using youtube-dl with --no-part to record the video. The problem is that I can't watch the video while it's recording. I need to Stop Recording with Ctrl+C to watch the recorded video. So I am thinking if there could be a python script with a loop that will break the live stream on every 1 hr of recording automatically and run the same code again with the different filename in output. In this way, I will get a recording of every one hr (...)
• 06:37
  ffprobe or avprobe not found. Please install one - Anass El Fakir Newest 'ffmpeg' Questions - Stack Overflow
  i want to add tags to mp3 converted by youtube-dl & ffmpeg : youtube-dl -o '/Output/qpgTC9MDx1o.mp3' qpgTC9MDx1o -f bestaudio --extract-audio --metadata-from-title "%(artist)s - %(title)s" 2>&1 i have this error in output result : [youtube] qpgTC9MDx1o: Downloading webpage [youtube] qpgTC9MDx1o: Extracting video information [youtube] qpgTC9MDx1o: Downloading js player en_US-vfluGO3jj [youtube] qpgTC9MDx1o: Downloading DASH manifest [download] /var/www/vhosts/mp3-y.com/httpdocs/Mp3_Output/quick-mp3.com-JALAL-EL-HAMDAOUI-2007-ARRASSIATES-VOL2-F1P-9CDoxlQ.mp3 has already been (...)