22 November

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

• 01:25
  Rails 5 with Carrierwave and S3 - creating multiple video formats for DASH streaming works but mpd file breaks - Milind Newest 'ffmpeg' Questions - Stack Overflow
  what I am doing - i have a Rails 5 app for video streaming(DASH MPEG) that uses FFMPEG to get encoded stream videos by converting any single video into multiple videos of multiple bit rates/size and primarily also MPD FILE that can be played easily on html video player, which i have already tested by manually running the ffmpeg scripts on the console that generates all the files.However, I want to automate this process and hence carrierwave comes into the pictures. Here, i use carrierwave to generate different versions(size/bitrate) of videos(mp4/webm) to upload to s3 but during running (...) -- DASH MPEG, MPD FILE,
• 00:21
  decode mpeg2-ts frame from socket to RGB buffer - DevAndroid Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to make a program that record my phone screen on my PC. For that I made a simple client/server socket TCP. My Android phone records the screen and encapsulates an H.264/AAC data in MPEG2/TS and send it over socket continuously. PC side, I'm using QT, I receive the stream on this function : void Server::processBinaryMessage() QTcpSocket *pClient = qobject_cast(sender()); QByteArray byteArrayReceived = pClient->readAll(); QFile f("record.ts"); if (f.open(QIODevice::WriteOnly | QIODevice::Append)) f.write(byteArrayReceived); f.close(); I wrote each QbyteArray to File to see (...)

21 November

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

• 22:51
  amix filter is causing audio to disappear - Mason Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying overlay audio onto a video. I have a very simple ffmpeg command (auido.mp3 is much longer than the video) ffmpeg -i video.mp4 -i audio.mp3 -filter_complex "[0:a] [1:a] amix=duration=shortest [a]" -map 0:v -map [a] test.mp4 This produces a silent video. However, when not mapping the video stream ffmpeg -i video.mp4 -i audio.mp3 -filter_complex "[0:a] [1:a] amix=duration=shortest [a]" -map [a] test.mp4 The resulting audio file is as expected. What could be causing this issues? (Is there a better way to overlay audio onto a video via ffmpeg?) Edit: log ffmpeg version 4.2.1 (...)
• 22:22
  Laradock FFMpeg in php-fpm container - Dean Collins Newest 'ffmpeg' Questions - Stack Overflow
  Followed the docs to install FFMpeg in laradock. Seems to work fine with the workspace, however following the instructions for php-fpm does not. At first I thought it was permission thing however when I looked in the container it had not been installed. A manual install and everything works as it should (access binary from php). Any ideas on how to get Laradock to provision the container with FFmpeg without hacking it each time? Thanks!
• 22:18
  How do install ffmpeg in android for youtube-dl - Wasp Nesser Newest 'ffmpeg' Questions - Stack Overflow
  I have got a python code for downloading a video (from youtube) and converting to mp3. I used youtube-dl for these. Python code works in computer. But that error occurred in my android : youtube_dl.utils.DownloadError: ERROR: ffprobe/avprobe and ffmpeg/avconv not found. Please install one. [Program finished] I couldn't find how to install these requirments in android . I use application called pydroid3 for executing python codes , installing python libraries and terminal staff. I tried to install ffmpeg and ffprob libraries with pip .But it didn't helped me. After I tried to execute adb (...)
• 21:58
  how to extract elementary stream from transport stream - haitham mohamed Newest 'ffmpeg' Questions - Stack Overflow
  i have .ts file looks like the following Input #0, mpegts, from 'i.ts': Duration: 00:00:36.32, start: 28752.398067, bitrate: 57694 kb/s Program 50 Metadata: service_name : aaa HD service_provider: Stream #0:51[0x1f5]: Video: h264 ([27][0][0][0] / 0x001B), none, 90k tbr, 90k tbn, 180k tbc Stream #0:52[0x1f6]: Audio: mp3 ([3][0][0][0] / 0x0003), 0 channels, fltp Program 51 Metadata: service_name : b Music HD service_provider: Stream #0:16[0x1ff]: Video: h264 ([27][0][0][0] / 0x001B), none, 90k tbr, 90k tbn, 180k tbc Stream #0:17[0x200]: Audio: mp3 ([3][0][0][0] / 0x0003), 0 channels, fltp (...)
• 20:44
  How to solve the problem of low performance of complex video generation using ffmpeg? - Zedd Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg to generate a complex video. This video consists of the following materials: Original video Video dub Background music Subtitle My code logic is as follows Combine 'Original video' and 'Video dub' into 'Video A' Subtitle 'Video A' as 'Video B' Add 'Background music' for 'Video B' as 'Video C' The 'Video C' is the video I want. My Code // Step1: ffmpeg -i VideoDub.mp3 -i OriginalVideo.mp4 VideoA.mp4 // Step2: ffmpeg -i VideoA.mp4 -vf subtitles=Subtitle.srt -y VideoB.mp4 // Step3: ffmpeg -i VideoB.mp4 -i BackgroundMusic.mp3 -filter_complex (...)
• 18:58
  I need the script to work on all dav files - audicom Newest 'ffmpeg' Questions - Stack Overflow
  Script should run in recursive mode, find DAV files and start DAV to JPG conversions using FFMPEG. The script is working, identifying files in folders and starting conversions when DAV files exist, but is ignoring some DAV files. When I put these DAV files back in the folder it converts correctly. What could be wrong? I thought it might be the speed of the process, since the files are being generated in the folder, the script must wait for the file to be closed and complete to act. I tried to delay the conversion process by 15 seconds using a PING, but it still skips some files. cd (...)
• 18:11
  problem with linking macos library - version number on wrong place - freedev Newest 'ffmpeg' Questions - Stack Overflow
  This is it seems a stupid problem. Basically I'm building a python wheel, I have everything and the build already works on linux. But when I'm trying to build on macos I have this strange error: *** No rule to make target `/usr/local/Cellar/ffmpeg/4.2.1_2/lib/libavutil.dylib.56' Looking at /usr/local/Cellar/ffmpeg/4.2.1_2/lib/ I see exists a file named: /usr/local/Cellar/ffmpeg/4.2.1_2/lib/libavutil.56.dylib You see, the difference is only in the name. The former has the number at end, the latter has the number in the middle. If I create a symbolic link from libavutil.56.dylib to (...)
• 17:57
  Convert mov with Alpha to VP9 Webm with Alpha Using ffmpeg - Enijar Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert a mov with alpha transparency to webm with alpha transparency, as seen here. I followed the steps explained here to no avail. From this answer I was able to remove all the black in the video, thus making it transparent but this is not what I need as I already have a transparent mov and would like to convert that to transparent webm format. ffmpeg -i input.mp4 -c:v libvpx -vf "colorkey=0x000000:0.1:0.1,format=yuva420p" out.webm This is the ffprobe output of the video I would like to convert to webm with transparency. built with Apple LLVM version 7.0.2 (...) -- here, here
• 17:31
  Converting a video to a GIF - Wolfiebae Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to make my app to accept videos from the phone's library to be uploaded and converted into GIF format. My code is giving out this build error though:- error: is not abstract and does not override abstract method onReschedule(String,ErrorInfo) in UploadCallback and also this warning on my onActivityResult method:- Overriding method should call super.onActivityResult The code is as below : - public class Video2gif extends AppCompatActivity private Button uploadBtn; private ProgressBar progressBar; private int SELECT_VIDEO = 2; private ImageView img1; private DownloadManager (...)
• 17:28
  How to add audio to video with node fluent-ffmpeg? - Nane Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to add audio on top video using ffmpeg ffmpeg -i sample.mp4 -i sample.mp3 -c copy -map 0:v:0 -map 1:a:0 output.mp4 Above code works in my terminal but I would like to use this via ffmpeg node wrapper fluent-ffmpeg This code is not working and it also not throwing any error ffmpeg() .input('DATA/sample.mp4') .input('DATA/sample.mp3') .videoCodec('copy') .outputOptions(['-map 0:v:0', '-map 1:a:0']) // .outputOption('-map 1:a:0') .save('node.mp4')
• 16:38
  Programmatically Streaming with ffmpeg library using linux system video device - zafer sevim Newest 'ffmpeg' Questions - Stack Overflow
  I am able to stream a static mp4 file coded with h264 in my code. But when I use linux video device /dev/video0 as input in my program, it gives this error: failed to open file `udp://xxx.xxx.xxx.xxx:28000` or configure filtergraph. I'm not using an encoder in my program yet. I don't understand why I can't stream directly from the video camera. The static mp4 file is encoded in h264. My code streaming is it as it is, but when I try to stream the camera with the video4linux2 format, it does not play. Do I need to encode the camera's output with any format? #include #include static void (...)
• 16:28
  Split the video in 30 second equal parts in android using the Ffmpeg - corgiwooer Newest 'ffmpeg' Questions - Stack Overflow
  I am on a video editing project. In which I want to edit the video into 30 sec equal parts. Right now I am using the RangeSeekBar to get the starting and ending point which works perfectly fine. But now I want to split the video into equal parts but don't know how to do it. This is what I tried private void executeCutVideoCommand(int startMs, int endMs) File moviesDir = Environment.getExternalStoragePublicDirectory( Environment.DIRECTORY_MOVIES ); String filePrefix = "cut_video"; String fileExtn = ".mp4"; String yourRealPath = getPath(VideoCutterActivity.this, selectedVideoUri); File (...)
• 16:20
  Crop image and take the left part with ffmpeg - shAkur Newest 'ffmpeg' Questions - Stack Overflow
  ffmpeg -i giphy.mp4 -y -filter_complex "[0:v]crop=iw/2:ih:0:0[left];[1:v]crop=iw/2:ih:ow:0[right];[left][right]hstack" -vframes 1 -vcodec mjpeg giphy.jpg The command above takes the first frame of a mp4 file and converts it to an image. I want to crop that image and take only the left part starting from center but I get the following error: Invalid file index 1 in filtergraph description [0:v]crop=iw/2:ih:0:0[left];[1:v]crop=iw/2:ih:ow:0[right];[left][right]hstack. What is wrong with my command? The image I want to crop: imgur.com/a/PdAqiZU -> I want to take only the left part of that (...)
• 16:04
  Converting video to GIF in Android Studio - Wolfiebae Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to make my app to accept videos from the phone's library to be uploaded and converted into GIF format. My code is giving out this build error though:- error: is not abstract and does not override abstract method onReschedule(String,ErrorInfo) in UploadCallback and also this warning on my onActivityResult method:- Overriding method should call super.onActivityResult The code is as below : - public class Video2gif extends AppCompatActivity private Button uploadBtn; private ProgressBar progressBar; private int SELECT_VIDEO = 2; private ImageView img1; private DownloadManager (...)
• 16:01
  The video after editing with ffmpeg in not showing in the phone gallery - corgiwooer Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a video editor app. The app works fine and edits the video. But the problem is the edited video is not showing in the phone gallery. I don't the problem. I also added the Media Scanner in the end but I didn't work out for me. This is my video editor method private void executeCutVideoCommand(int startMs, int endMs) File moviesDir = Environment.getExternalStoragePublicDirectory( Environment.DIRECTORY_MOVIES ); String filePrefix = "cut_video"; String fileExtn = ".mp4"; String yourRealPath = getPath(VideoCutterActivity.this, selectedVideoUri); File dest = new (...)
• 15:34
  hardware acceleration for ffmpeg is not working - tempMailisAwesome Newest 'ffmpeg' Questions - Stack Overflow
  I download cuda driver for my nvidia but it still does not use my GPU, it still using cpu. how can i make it use GPU. i heard about hardware acceleration as well but thats not working. It has to be h.264
• 15:32
  How do I get duration of an In Memory Video in Python / Django? - Lucas Tonon Newest 'ffmpeg' Questions - Stack Overflow
  So I was successfully using the following code to get the duration of a saved video in Django. def get_video_length(file_path): command = [ 'ffprobe', '-v', 'error', '-show_entries', 'format=duration', '-of', 'default=noprint_wrappers=1:nokey=1', file_path ] try: output = check_output( command, stderr=STDOUT ).decode() except CalledProcessError as e: output = e.output.decode() return output But now I need to get the duration of an uploaded file before saving it. I have a serializer with a FileField and on validate method I should check the video duration. For instance: class (...) -- https://docs.djangoproject.com/en/2.2/_modules/django/core/files/uploadedfile/
• 15:12
  Create thumbnail image of text file using ffmpegPath - RichardZ Newest 'ffmpeg' Questions - Stack Overflow
  In response to this question: Generate thumbnail for text file, llogan suggested using: ffmpeg -video_size 640x480 -chars_per_frame 60000 -i in.txt -frames:v 1 out.png. Can someone please show me the syntax for this command using ffmpegPath? Thanks
• 15:09
  ffmpeg to normalize loudness of a video - A Person Newest 'ffmpeg' Questions - Stack Overflow
  I wanted to know if there was a way for me to normalised the sound from a video to EBU R128 standard. Current I am trying to do the 2 step bypass but I am unsure where I am going wrong. these are the command I did: ffmpeg -i D:\\Person\\Documents\\Projects\\IngestQC\\ABN_.mxf -af loudnorm=I=-23:dual_mono=true:TP=-2:LRA=7:print_format=summary -f null - The result is this: " [Parsed_loudnorm_0 ⓐ 000002107bee2dc0] Input Integrated: -17.4 LUFS Input True Peak: +0.0 dBTP Input LRA: 8.4 LU Input Threshold: -27.9 LUFS Output Integrated: -22.9 LUFS Output True Peak: -4.2 dBTP Output LRA: (...)
• 13:09
  ffmpeg Video not converting from .mp4 to .ts format - Shivaji Boraye Newest 'ffmpeg' Questions - Stack Overflow
  We are using RecordRTC to record video. We have used "video/mp4" mimeType and recording the video and uploading to the upload directory using the PHP file upload function. Here is the function that I have used to record using RecordRTC recorder = RecordRTC(stream, type: 'video',mimeType: 'video/mp4'); We have checked the uploaded file and played on multiple browsers and multiple devices and it's playing video properly. But when we try to convert video from .mp4 to .ts format generating 0B .ts file. We have searched but not found any proper solution. We have converted video using FFmpeg (...)
• 13:06
  Is there a way to detect black on FFMPEG video files - A Person Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to run a QC check on my video files. I know that there is a way to detect black frame or audio loss in a video file. Can anyone help me with how the syntax is written? I have tried doing the following but I am having issues as I do not know how to tell from the output. ffmpeg -i inputfile.mxf -vf blackdetect=d=0.1:pix_th=.1 -f rawvideo -y /dev/null Also is there ay ways to check if I have any packets that are in error by using ffprobe or ffmpeg I also do not understand waht this 0.1:pix_th=.1 is doing? EDIT*: I have used this command now ffmpeg -i 01.mxf -vf (...)
• 11:19
  ffmpeg adds second image when converting gif to mp4 - shAkur Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg (node.js package) for converting gif to mp4 but the outcome result isn't what I'm expecting. Code: ffmpeg(inputFile) .inputFormat('gif') .complexFilter([ '[0:v]alphaextract[a]', '[0:v][a]hstack=inputs=2' ]) .outputOptions([ '-movflags faststart' ]) .fps(options.fps) .toFormat('mp4') .on('error', function(err, stdout, stderr) return callback(err); ) .on('progress', function(progress) ) .on('end', function() utils.lockFile(constants.PATH_UPLOADS + 'artworks/' + outputVideoName); return callback(null, name: outputVideoName ); ) .output(constants.PATH_UPLOADS + (...) -- https://imgur.com/IY4yHJR, https://youtu.be/XKu5LemTN8A
• 05:34
  Compress and get thumbnails from .mp4 files using .net c# - Umair Shahid Newest 'ffmpeg' Questions - Stack Overflow
  I was searching how we can compress mp4 file and generate thumbnails from that file, Fortunately, I found one solution "MediaToolKit" that worked perfectly for thumbnail generation but not works for compression. Currently, what I am doing, I have generated .bat file which contains commands of FFmpeg for example ffmpeg -i %1 -an -crf 25 -vf fps=fps=30,scale=640x480 %output.mp4 But it's not good stuff, I want to write a program in C# which will take video and compress it and generate thumbnails Does anyone have an idea about (...)
• 05:18
  decode video frames into OpenGL textures with FFmpeg -> QSV -> glTexImage2D - gameOverMan Newest 'ffmpeg' Questions - Stack Overflow
  Is anyone aware of the most accelerated route of binding an AVFrame returned from ffmpeg avcodec_receive_frame when using Intel Quick Sync Video (QSV) to an OpenGL texture? I'm using ffmpeg's QSV decode and mapping a NV12 returned frame to a software buffer via av_hwframe_map to allow the OpenGL creation of two planes (NV12) as two textures for GLSL pixel shader colour conversion and more on route to display. Is this the fastest route using the two frameworks? Native QSV via dx9 + HLSL is much faster. I've seen some OpenCL extensions for surface mapping. Any pointers are interesting (...) -- Intel Quick Sync Video (QSV)
• 03:57
  Batch file not running, only individual command runs - Rajiv Sukhla Newest 'ffmpeg' Questions - Stack Overflow
  I have a batch file of the following code cd C:\\xampp\\htdocs\\Projects\\videos\\images_compare_english && ffmpeg -framerate .25 -i img-%02d.jpg -i music.mp3 -c:v libx264 -preset veryslow -crf 0 -c:a copy -shortest compare_english\\output.mp4 The above code has two commands which is separated by &&, means the second command will run only after the execution of the first. But it is not running. I am basically combining some images with music. But it is not working. However entering manually one command at a time works. Can anybody help me, what is the problem with command (...)
• 03:55
  I want the mp4 file shooting date to be the xml file name - re6 Newest 'ffmpeg' Questions - Stack Overflow
  In Windows 10 environment, I would like to change the name of both “file with extension mp4” and “file with extension xml” to the shooting date of mp4 file. C0001.MP4 C0001M01.XML C0002.MP4 C0002M01.XML Specifically, I want to change the file name as follows. 2019-10-23_13-10-32.MP4 2019-10-23_13-10-32.XML 2019-10-23_13-10-49.MP4 2019-10-23_13-10-49.XML I tried to think that using the ext option would give me the expected result, but I didn't get the expected result. First time C:\\Users\\user>exiftool "-FileName Second time C:\\Users\\user>exiftool (...)