25 June

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

• 09:26
  Crash is happening while playing a video where my iOS app is integrated with VideoKit and mobileFFMpeg frameworks - vinay Newest 'ffmpeg' Questions - Stack Overflow
  I am using MobileFFMpeg for executing the FFmpeg commands in ios application , As I am using mobileFFMPeg for sending the live stream from ip camera to Azure server ..... And it is working fine And the problem is my application is crashing when I integrate the iOS VideoKit with this MobileFFmpeg This is the cocoapod that I have used to installed the MobileFFMpeg pod 'mobile-ffmpeg-full-gpl', '~> 4.2' MobileFFmpeg.execute("-i video.mkv -codec copy video.mp4") ---------- for executing ffmpeg commands if(avformat_find_stream_info(_avFmtCtx, opts) > This is the point where the application (...)
• 08:14
  CreateProcess fails when dshow is used in commandline - ark1974 Newest 'ffmpeg' Questions - Stack Overflow
  Trying to launch ffmpeg using CreateProcess. Issues: 1) Can't use dshow in the commandline. 2) RTMP streaming with the STDIN piped don't show the stream. Questions: 1) What are the ceveats in the commandline pertaining to CreateProcess api? 2) What's is the way round ? How can the issue be fixed? This code works: BOOL bSuccess = CreateProcess(NULL, L"ffmpeg.exe -y -loop 1 -i kites.jpg out.mp4", NULL, NULL, TRUE, CREATE_NEW_CONSOLE, NULL, NULL, &siStartInfo, &piProcInfo); CreateProcess fails when dshow is used. However it works as command line in console. BOOL bSuccess = (...)

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

• 03:08
  avformat/matroskadec: Improve read error/EOF checks I - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avformat/matroskadec: Improve read error/EOF checks I ebml_read_num had a number of flaws: 1. The check for read errors/EOF was totally wrong. E.g. an EBML number beginning with the invalid 0x00 would be considered a read error, although it is just invalid data. 2. The check for read errors/EOF was done just once, after reading the first byte of the EBML number. But errors/EOF can happen inbetween, of course, and this wasn't checked. 3. There was no way to distinguish when EOF should be an error (because the data has to be there) for which an error message should be emitted and when (...)

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

• 02:03
  PHP-FFMpeg video output is truncated - showdev Newest 'ffmpeg' Questions - Stack Overflow
  I'm using the PHP-FFMpeg library found here and code from the "Basic Usage" section. The outputted video seems to be truncated. I'm using a source video that's 28 seconds long, but the output is only 9 seconds. What's going wrong? Here, I'm checking the duration of the source video: $ffprobe = FFMpeg\\FFProbe::create(); $duration = $ffprobe ->format('test/source.mp4') ->get('duration'); 28.700000 Then generating an output video: $ffmpeg = FFMpeg\\FFMpeg::create(); $video = $ffmpeg->open('test/source.mp4'); $video->save(new FFMpeg\\Format\\Video\\X264(), 'test/export.mp4'); Then checking (...) -- here, Basic Usage
• 01:01
  How to concatenate two MP4 files using FFmpeg? - Mark L Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to concatenate two mp4 files using ffmpeg. I need this to be an automatic process hence why I chose ffmpeg. I'm converting the two files into .ts files and then concatenating them and then trying to encode that concated .ts file. The files are h264 and aac encoded and I'm hoping to keep the quality the same or as close to original as possible. ffmpeg -i part1.mp4 -vcodec copy -vbsf h264_mp4toannexb -acodec copy part1.ts ffmpeg -i part2.mp4 -vcodec copy -vbsf h264_mp4toannexb -acodec copy part2.ts cat part1.ts part2.ts > parts.ts ffmpeg -y -i parts.ts -acodec copy -ar 44100 -ab (...)
• 00:53
  Laravel Process() with FFMPEG times out for any video that is even kind of large - Hunter Newest 'ffmpeg' Questions - Stack Overflow
  I am creating an application that lets users upload video files, and once they do it will convert them all to .mp4's (it does some other things, but since this first part of the code is breaking before it gets a chance to reach the other stuff, and the process for each is pretty similar, lets just discuss this issue). Once a user submits, it gets sent to GameControllerⓐstore. Below is a code sample (the one that keeps getting sent back to me as problematic) from the controller: $process = new Process(env('APP_FFMPEG', 'ffmpeg') . ' -i ' . $fileURL . ' -f mp4 -vcodec libx264 -preset (...)

24 June

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

• 01:42
  avformat/matroskadec: Improve read error/EOF checks II - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avformat/matroskadec: Improve read error/EOF checks II This commit fixes a number of bugs: 1. There was no check that no read error/EOF occured during ebml_read_uint, ebml_read_sint and ebml_read_float. 2. ebml_read_ascii and ebml_read_binary did sometimes not forward error codes; instead they simply returned AVERROR(EIO). 3. In particular, AVERROR_EOF hasn't been used and no dedicated error message for it existed. This has been changed. In order to reduce code duplication, the new error code NEEDS_CHECKING has been introduced which makes ebml_parse check the AVIOContext's status (...)
• 01:42
  avformat/matroskadec: Improve error/EOF checks III - Andreas Rheinhardt git.videolan.org Git - ffmpeg.git/rss log
  avformat/matroskadec: Improve error/EOF checks III Up until now, when an element was skipped, it was relied upon ffio_limit to make sure that there is enough data available to skip. ffio_limit itself relies upon the availability of the file's size. As this needn't be available, the check has been refined: First one byte less than intended is skipped, then another byte is read, followed by a check of the error flags. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> [DH] (...)

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

• 23:53
  Use FFmpeg (or sox) to reduce stereo - Joschua Newest 'ffmpeg' Questions - Stack Overflow
  The ffmpeg wiki has this method to mix stereo to stereo: ffmpeg -i input.mp3 -af "pan=stereo|c0 How could I do this but reduce the volume of the right part mixed into the left and the left part mixed into the right (diagonal arrows) by 60%, while leaving the volume of both channels as is (downward arrows)? (If this could be done with sox, it be great too.) -- ffmpeg wiki,
• 23:11
  How to add background music to a video file on a specific video second? In node-fluent-ffmpeg - edpse Newest 'ffmpeg' Questions - Stack Overflow
  I have a 12sec long audio.mp3 file and video.mp4 is 60sec long. I need to insert audio.mp3 on the 40th second of the video. How to do it with node-fluent-ffmpeg?
• 22:33
  Generating thumbnails from video is very slow using ffmpeg - King Julien Newest 'ffmpeg' Questions - Stack Overflow
  I'm using react-native-ffmpeg to generate thumbnails from video. Here is the command: ffmpeg -i example.mp4 -vf fps=1/10 img%03d.jpg The problem is that it's very slow. Generating ~10 thumbnails from a 2 minutes video takes about a minute. Is there a way to make it faster? P.S. I'm testing this on android. Tried several devices (S10, oneplus, etc...) but all of them are slow.
• 21:46
  how can water mark video streaming on the fly - Mohsen Rahnamaei Newest 'ffmpeg' Questions - Stack Overflow
  I want to write something like watermark video in dynamic mode . with nginx and hls. how can I do this without storing a static file? means I want to be middleware between ts files and nginx . and when client request ts file i want to watermark on the fly. actually now I developed hls server with nginx and make all of my video ts files with ffmpeg . and prepare m3u8 file.
• 21:34
  How to add filename to drawtext in video with ffmpeg? - Duong Manh Hung Newest 'ffmpeg' Questions - Stack Overflow
  I want to display the file name in the video with drawtext . For example, I have a file list : C:\\Users\\ffmpeg code\\1.mp4 C:\\Users\\ffmpeg code\\2.mp4 ... I want 1.mp4 add text "1" into video, 2.mp4 add text "2" into video, similar to other videos. I tried : ffmpeg -i "input.*" -vf drawtext="fontfile=C\\:/Windows/Fonts/arial.ttf:fontsize=20: fontcolor=red:x=10:y=10:text=?filename?" -preset ultrafast "output.mp4" . It's hard to name each file into the drawtext (...)
• 20:19
  FFMPEG: How to create a webp preview file with 16:9 aspect ratio and no stretching - X4748 Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to create a webp file for videos to show a quick preview of them like Youtube with 16:9 aspect ratio and black/blurred background. How is that possible to make something like this using FFMPEG? This following script is what I tried and it works, But when video's w / h is smaller than 177... I get this error. Error: [Parsed_crop_5 ⓐ 000002438207c580] Invalid too big or non positive size for width '350' or height '196' FFMPEG script ffmpeg -r 16 -ss 0 -i -loop 0 -c:v libwebp -lavfi (...) --
• 20:00
  How do I execute an ffmpeg cmd to command line using C#? - TonysAlwayslost Newest 'ffmpeg' Questions - Stack Overflow
  I am having an issuing trying to get a form app on visual studio 19 to execute a cmd on command line for converting a video from mp4 to avi. I am using ffmpeg for this but everytime I compile it wont pick anything up. I have ran the argument through command line and it converts the video just fine. The path as far as I am aware is correct so I am not sure why the compiler wont pick up on any files. private void Button1_Click(object sender, EventArgs e) string cmdString = "c:\\ffmpeg\\bin"; ProcessStartInfo startInfo = new ProcessStartInfo(); startInfo.CreateNoWindow = false; (...)
• 18:05
  ffmpeg audio overlay several files - iankjqrlb Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg on windows and nginx and need to concat several small MP3 files ~3 sec each I use some code to concat ~10 files at once but I need to overlay them for a seocond each other ffmpeg -i \\"concat:$filesPath\\" -acodec copy $outputPath concat ~10 files to one please modify my command to get concated all files with overlay 1 second to each other. I mean the first file 1 sec before finish and the next one is started and when the second one 1 sec before finish the third one is started. Previous files must be played fully but with overlay with a next one. (...)
• 16:02
  Using ffmepg library for decoding H264 data [on hold] - Moufid Newest 'ffmpeg' Questions - Stack Overflow
  This is the first time I work in video processing tools. The gool is to decode h264 data and display video (or images). I found that ffmpeg library could handle those kind of issue. But the problem that I have not found: example of code using ffmpeg library to decode h264 data h264 input data to test the program with. Could you please help.
• 17:05
  How to create multi scroll image use python-ffmpeg with transition? - rinofcan Newest 'ffmpeg' Questions - Stack Overflow
  How to create multi scroll image use python-ffmpeg with transition? This is sample video. https://youtu.be/kL2JNJUPHwI Please help me -- https://youtu.be/kL2JNJUPHwI
• 17:00
  Pydub can't find ffmpeg although it's installed and in path - djaychela Newest 'ffmpeg' Questions - Stack Overflow
  I'm attempting to open some MP3 files to find their lengths (as part of a larger project). I've installed pydub and ffmpeg has been installed via brew. ffmpeg is available in my path, and typing ffmpeg in a terminal launches it successfully - the audio file I'm referencing is present and I can run ffmpeg -i on it to get information about it. The program can open and play the audio file (using pygame), so I'm sure it's not a file issue. However, attempting to open any files with AudioSegment leads to 'Couldn't find ffmpeg or avconv - defaulting to ffmpeg but may not work' being displayed, (...)
• 15:52
  Shaka Player: ignore empty AdaptationSet - Mitya Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to play DASH stream in Shaka Player. Sometimes the stream doesn't have an audio source and its manifest file contains an empty AdaptationSet entry. In this case Shaka Player returns the manifest parsing error: | DASH_EMPTY_ADAPTATION_SET | 4003 | number | The DASH Manifest contained an AdaptationSet with no Representations. | Is it possible to ignore this error somehow and play the video without audio source? Example of manifest file: Media (...)
• 17:42
  Streaming ffmpeg output directly to dispatcher - PP_Hyperion Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to play music with my discord bot and I want to use ffmpeg to specify the start of the music, which works perfectly fine, but I can only download the music with ffmpeg and then play it. I want ffmpeg to process it and then also stream it to play the music. Here is the code I use to download and then play the music: message.member.voiceChannel.join().then((con, err) => ytPlay.search_video(op, (id) => let stream = ytdl("https://www.youtube.com/watch?v=" + id, filter: "audioonly" ); let audio = fs.createWriteStream('opStream.divx'); proc = new ffmpeg( source: stream ) (...)
• 15:14
  FFMPEG Crop with side by side merge - Alan Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a shell/ffmpeg script that can show multiple files after they have been processed using different filters in a side by side / tiled way. An example of desired output would be: https://www.youtube.com/watch?v=DoPuhMRYem4. In order to create the desired output I need to crop off the right half of video1 and the left half of video2 and then join them back with [video1+video2] side by side. I have played around with a bunch of different ways of joining them, this does OK: ffmpeg -i input1.mp4 -i input2.mp4 -filter_complex " nullsrc=size=800x400 [background]; [0:v] (...) -- https://www.youtube.com/watch?v=DoPuhMRYem4
• 12:11
  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')
• 12:00
  Correct layout for FFMPEG scripts inside Powershell - Virgosh Newest 'ffmpeg' Questions - Stack Overflow
  I've found several FFMPEG scripts I want to run on Windows10 using powershell. I'm not so skilled so I can't understand why I receive some errors and what is the correct way I can launch those scripts. for example I've just grabbed this script ffmpeg -i input0 -i input1 -filter_complex \\ "[1:v][0:v]blend=all_expr=if(gt(X\\,Y*(W/H))\\,A\\,B)" output and I receive this error as both when I just paste into powershell or making a .bat file containint the code At line:1 char:53 + "[1:v][0:v]blend=all_expr=if(gt(X\\,Y*(W/H))\\,A\\,B)" output.mov + ~~~~~~~~~~ Unexpected token 'output.mov' in (...)
• 11:49
  How to reduce execution time in long video using ffmpeg - vikram Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmpeg for adding text over video and add overlay image over video in android everything works for me but it takes too long to execute command mostly in long video that more than or equals to 10 sec String imgcmd[]=new String[]"-i", inputpath ,"-i",imagepath ,"-filter_complex", "[0:v][1:v]overlay=main_w-overlay_w-10:main_h-overlay_h-10", "-codec:a", "copy",output; String[] txtcmd = new String[]"-i",""+inputpath, "-filter_complex", "drawtext=text=Vikram Dulagach:fontcolor=#000000:fontsize=54:x=533:y=503:fontfile="+"/sdcard/retro.ttf", "-y" ,""+output; I want reduce execution (...)
• 11:16
  How to enable LHLS in FFMPEG 4.1? - mehdi.r Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a low latency CMAF video stream using FFMPEG. To do so, I would like to enable the lhls option in FFMPEG in order to have the #EXT-X-PREFETCH tag written in the HLS manifest. From the FFMPEG doc : https://www.ffmpeg.org/ffmpeg-all.html Enable Low-latency HLS(LHLS). Adds #EXT-X-PREFETCH tag with current >segment’s URI. Apple doesn’t have an official spec for LHLS. Meanwhile >hls.js player folks are trying to standardize a open LHLS spec. The >draft spec is available in https://github.com/video-dev/hlsjs->rfcs/blob/lhls-spec/proposals/0001-lhls.md This option will also (...) -- https://www.ffmpeg.org/ffmpeg-all.html, https://github.com/video-dev/hlsjs-, https://ffmpeg.zeranoe.com/builds/
• 09:36
  FFMpeg Draw Text Like Animation - Zakir_SZH Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to draw text on my video using ffmpeg. Text is: "Please Wait, System Is Loading..." here is the code i used: ffmpeg -i "input.mp4" -vf drawtext="fontfile=1.ttf: \\text='Please Wait, System Is Loading...': fontcolor=0x0080FF: fontsize=48: box=1: boxcolor=whiteⓐ0.1: \\boxborderw=5: x=(w-text_w)/2: y=(h-(text_h+25))" -codec:a copy "output.mp4" that worked good, but what i like is to make the text look like animated: So, every 0.5 second it should change to following lines and loop it: Please Wait, System Is Loading. Please Wait, System Is Loading.. Please Wait, System Is (...)
• 09:26
  What are the alternatives of PHP-ffmpeg and LaravelFFMpeg repo - Sirsemy Newest 'ffmpeg' Questions - Stack Overflow
  I use Laravel and PHP. I'd convert video during streaming, and I'd like to put watermark to the video. I spent days to try to set up the pascalbaljetmedia/laravel-ffmpeg repo from GitHub and try to use PHP-ffmpeg but I couldn't. Are there any alternative for the same usage? I use Laravel 5.8 PHP 7.1 Windows 10 Wamp server Thanks for the help in advance. Edit We've used this code for call an external ffmpeg but that also haven't worked. $ffmpeg = "c:\\\\ffmpeg\\bin\\\\ffmpeg.exe"; $cmd = $ffmpeg . " -i " . $videoPath . " -i " . $watermark . " -filter_complex 'overlay' " . $saveLocation; (...)
• 07:29
  output video has black..whats wrong in this command? - vikram Newest 'ffmpeg' Questions - Stack Overflow
  i want add text over video and i am using ffmpeg android lib but edited successfully but output video shows me black screen only String addtextcommand[]="-i", inputpath, "-strict", "-2", "-vf", "drawtext=text=\\'onLine1\\': fontcolor=white", "-map", "0:a", "-codec:v", "libx264", "-codec:a", "copy",output;
• 03:30
  mp3 decoding using ffmpeg API (Header missing) - WIN Newest 'ffmpeg' Questions - Stack Overflow
  i have been trying to decode an MP3 file to pcm, using ffmpeg API, but i keep getting an error [mp3 ⓐ 0x8553020]Header missing this is the code i use : #include #include #include #ifdef HAVE_AV_CONFIG_H #undef HAVE_AV_CONFIG_H #endif #include "libavcodec/avcodec.h" #include "libavutil/mathematics.h" #define INBUF_SIZE 4096 #define AUDIO_INBUF_SIZE 20480 #define AUDIO_REFILL_THRESH 4096 static void audio_decode_example(const char *outfilename, const char *filename) AVCodec *codec; AVCodecContext *c= NULL; int out_size, len; FILE *f, *outfile; uint8_t *outbuf; uint8_t (...)