2 mai

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

• 20:01
  Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (360p.m3u 8) has not been used for any stream. - Marc Archenault Newest 'ffmpeg' Questions - Stack Overflow
  I am receiving this warning from ffmpeg. The job runs and all the videos seem to output correctly. I have 2 hls, 1 mp4 with overlay + A single thumbnail. The warning: Stream #1:0: Video: png, rgba(pc), 500x38, 25 tbr, 25 tbn, 25 tbc Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (360p.m3u 8) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of s ome encoder which was not actually used for any stream. The windows (...)
• 18:52
  convert video to audio - ffmpeg - shakti goyal Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert video to audio using ffmpeg in flutter based application but command is not working. Is there something wrong with the command? void convert(File pickedVideo) async Directory applicationDocDirectory = await getApplicationDocumentsDirectory(); final outputPath = '$applicationDocDirectory.path/output-audio-$const Uuid().v1().mp3'; final session = await FFmpegKit.execute('-i $pickedVideo.path -vn -acodec mp3 $outputPath'); final returnCode = await session.getReturnCode();  (...)
• 15:01
  How trim last frames from old mp4 video and merge new to it in one ffmpeg command? [closed] - mikezang Newest 'ffmpeg' Questions - Stack Overflow
  I have a full time old mp4 video and a newest video, I want to trim frames from old video, then merge new to old trimed to build a new full video, can I do it in one ffmpeg command without reencode? Something like oldFull.mp4 - lastFrames) + new.mp4 = newFull,mp4 If old full frames are oldFrames, and want to remove last frames as removeFrames, how can I merge new.mp4 to OUT? ffmpeg -i IN -c copy -bsf:v noise=drop=between(n\\,removeFrames\\,oldFrames) (...)
• 14:24
  convert video to audio using ffmpeg - flutter - shakti goyal Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert video to audio using flutter ffmpeg kit package but it is returning ReturnCode 1 which is false this is the command Directory applicationDocDirectory = await getApplicationDocumentsDirectory(); outputPath = '$applicationDocDirectory.path/output-audio-$const Uuid().v1().mp3'; FFmpegKit.execute('-i $widget.pickedVideo.path -vn -ar 44100 -ac 2 -b:a 256k -f mp3 $outputPath'); is something wrong with the (...)
• 10:16
  When creating ffmpeg segments instead of "-t" I cannot move inside the resulting MP4 file [closed] - pavlii Newest 'ffmpeg' Questions - Stack Overflow
  We are using ffmpeg for grabbing X11 session and we had changed a bit the commant run. I will write only the different part of the command; the rest were maintained so are not important for this problem: ffmpeg ..... -t 00:14:58 (old command) ffmpeg ..... -f segment -segment_time 900 -strftime 1 (new command) Resulting files are (in both cases) MP4. But in new - using segments - variant I am able to open the file in VLC player as usual but I cannot do any location inside. So I have to wait for example 700s to see what had happened at that time - I cannot use VLC slider to (...)
• 13:34
  How to slide mutiple images left continuously? - mikezang Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg to slide images from left to center as below: #slide 1st image from right to center #countdown 10 seconds #slide 1st image from center to left and in the same time #slide 2nd image from right to center #countdown 10 seconds #... ffmpeg -loglevel quiet -loop 1 -i input.png -filter_complex "split=2[bg][slider];[bg]drawbox=c=black:t=fill[bg];[bg][slider]overlay=x='max(W-w*t,0)':y=0" -t 10 -y output.mp4 There is black background between two images, I want to the preious page keep slide from center to left and next page slide (...) --
• 13:05
  "fmpeg" has no attribute "input" - Robin Singh Newest 'ffmpeg' Questions - Stack Overflow
  I had previously built this youtube downloader but when I tested it recently; it stopped working. from pytube import YouTube import ffmpeg import os raw = 'C:\\ProgramData\\ytChache' path1 = 'C:\\ProgramData\\ytChache\\Video\\\\' path2 = 'C:\\ProgramData\\ytChache\\Audio\\\\' file_type = "mp4" if os.path.exists(path1 and path2): boo = True else: boo = False while boo: url = str(input("Link : ")) choice = int(input('Enter 1 for Only Audio and Enter 2 For Both Audio and Video \\n: (...)
• 12:57
  FFmpeg - MP4 file converted from PNG files is not playable - StamShamen Newest 'ffmpeg' Questions - Stack Overflow
  I am attempting to use FFmpeg and JavaScript to convert multiple PNG files to an MP4 video. However, sometimes the output video is not playable (1kb) and no error appears in the output. This is the command that I run: ffmpeg -y -r 25 -i "videos-reporter/123/screenshots/%04d.png" -c:v libx264 -preset medium -crf 20 -pix_fmt yuv420p -vf "scale=1200:trunc(ow/a/2)*2,setpts=3.0*PTS" -threads 4 "videos-reporter/123/video.mp4" Output of playable video: Input #0, image2, from (...)
• 12:54
  FFMPEG C Library: Encoding h264 stream into Matroska .mkv on MacOS - KaisoHHH Newest 'ffmpeg' Questions - Stack Overflow
  FFMPEG C Library: Encoding h264 stream into Matroska .mkv container creates corrupt files Above is the related question, and the answer of allocating memory for extradata of codec context works. But on MacOS, with the encoder videotoolbox, this approach creates corrupted video file for any container, including mp4 and mkv. But what it does better for mkv is that at least the corrupted file is not 0 size. I was wondering what is the correct way to encode stream to mkv on MacOS? Below is my code initiating the outputcodec auto path = previewPath.toStdString(); // (...)
• 10:19
  I was trying to render a gif over an video created from a single image by adding an audio stream, but the gif is not rendering [closed] - Madhur Arora Newest 'ffmpeg' Questions - Stack Overflow
  the gif is not rendering !ffmpeg -i /content/lipsync_facerefine_studio/assets/7cbdde.jpg -stream_loop -1 -i /content/lipsync_facerefine_studio/temp/c0703.gif -i /content/lipsync_facerefine_studio/lipsync/temp/48409e30-a572-42ac-9893-cf24f3cd866d.wav -filter_complex "[1]fade=in:st=0:d=2.5:alpha=1,scale=499.99999999999994:375.0[layer1];[0][layer1]overlay=x='if(lt(t,2.5),81.0-(w/2)+t*(w/5.0),81.0)':y=81.0:shortest=1[overlay1];" -map 2:a -map '[overlay1]' /content/lipsync_facerefine_studio/temp/temp.mp4 (...)
• 11:38
  encoding XDCAM MXF with FFMPEG [closed] - Mark Yang Newest 'ffmpeg' Questions - Stack Overflow
  I'd like to encode to an XDCAM HD422 MXF file with FFMPEG. I've searched but cannot find the right command line arguments to use. What command line arguments are required to encode a XDCAM-compliant output file?
• 06:53
  Error transcoding with FFmpeg: Error: Output format hls is not available - asif mohmd Newest 'ffmpeg' Questions - Stack Overflow
  I am using FFmpeg library to transcode a video file into multiple resolutions and create an HLS (HTTP Live Streaming) master playlist. It takes a video file as input but its does give me the output with HLS playlist.I got a error called "Output format hls is not available". Only the Output directory is creating I am using FFMpeg 7.0 full build version and also tried older versions and ffmpeg essentials and also tried chocolatey. if i remove the implementation of HLS from this code.it will create 4 different resolution videos in my output. Note:I just tried this same (...)

1er mai

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

• 22:51
  Python library to extract metadata from video file stored in variable, rather than on filesystem - Adam J. Kessel Newest 'ffmpeg' Questions - Stack Overflow
  Is there a standard solution for extracting metadata (like aspect ratio, codec, etc) from video data stored in a Python variable, rather than from a file on disk? I see people point most often to ffmpeg-python for video metadata analysis, but as far as I can tell, it can only operate on a filename rather than an object in memory. One possible workaround is to tell ffmpeg-python to use stdin pipe as input and then output the contents of the variable to that pipe, but this seems cumbersome. If ffmpeg-python accepted a file handle rather than filename, you could use BytesIO, but this (...)
• 23:03
  AWS MediaConvert generating double length video - user1hjgjhgjhggjhg Newest 'ffmpeg' Questions - Stack Overflow
  I am new to aws media convert. I am trying to convert the video but the final output video becomes double the length from the original one. for example if I have a video 30 seconds long, it will create 60 seconds long final video. Below is my son. "Queue": "arn:aws:mediaconvert:us-west-2:730335xxxxx:queues/Default", "UserMetadata": , "Role": "arn:aws:iam::73033541xxxx:role/service-role/MediaConvert_Default_Role", "Settings": "TimecodeConfig": "Source": "ZEROBASED" , "OutputGroups": [ "Name": "DASH ISO", "Outputs": [  (...)
• 11:16
  List of FFMPEG audio formats and their file extensions - vaid Newest 'ffmpeg' Questions - Stack Overflow
  I've tried to find information about this but to no avail. What audio formats and their file extensions are supported by FFMPEG? Is there a command that can list them all?
• 09:33
  How to create video from a stream webcam and canvas? - Stefdelec Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to generate a video on browser from different cut: Slide: stream from canvas Video: stream from webcam I just want to allow user to download the video edit with slide1 + video1 + slide2 + video2 + slide3 + video3. Here is my code: const canvas = document.getElementById('myCanvas'); const ctx = canvas.getContext('2d'); const webcam = document.getElementById('webcam'); const videoPlayer = document.createElement('video'); videoPlayer.controls = (...) -- https://jsfiddle.net/Sulot/nmqf6wdj/25/