10 septembre

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

• 06:35
  Concat videos too slow using Python MoviePY - Mathematics Newest 'ffmpeg' Questions - Stack Overflow
  I am joining 50s or more videos of 1,2,3 minutes using MoviePY but it's giving me 20 hours, even though I have 64 GB of ram, i7 and GTX 670, not top of range yet reasonable. Is there anyway I can speed this process up ? padding = 10 # padding option video_clips = [VideoFileClip(video_dir + video) for video in os.listdir(video_dir)] video_fx_list = [video_clips[0]] idx = video_clips[0].duration - padding for video in video_clips[1:]: video_fx_list.append(video.set_start(idx).crossfadein(padding)) idx += video.duration - (...) --
• 01:54
  Twilio Real-Time Media Streaming to WebSocket Receives Only Noise Instead of Speech - dannym25 Newest 'ffmpeg' Questions - Stack Overflow
  I'm setting up a Twilio Voice call with real-time media streaming to a WebSocket server for speech-to-text processing using Google Cloud Speech-to-Text. The connection is established successfully, and I receive a continuous stream of audio data from Twilio. However, when I play back the received audio, all I hear is a rapid clicking/jackhammering noise instead of the actual speech spoken during the call. Setup: Twilio sends inbound audio to my WebSocket server. WebSocket receives and saves the raw mulaw-encoded audio data from Twilio. The audio is processed via (...)

9 septembre

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

• 14:30
  FFmpeg Subtitle Filter Failing to Correctly Render Complex Tamil Characters [closed] - mohamed haleem Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to burn subtitles into a video using FFmpeg. The subtitles are for a video in the Tamil language, and the source is an .srt file. The issue I'm facing is with FFmpeg's font rendering for complex, multi-part characters. In the Tamil script, certain consonant-vowel combinations are represented by a base consonant character followed by a vowel sign. The rendering engine is supposed to combine these into a single glyph. However, FFmpeg is rendering them as two separate, unjoined characters. For example, the character for ku is being displayed as the consonant (...)

8 septembre

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

• 22:17
  How do I bundle ffmpeg with my PyInstaller --onefile executable correctly? - user31448173 Newest 'ffmpeg' Questions - Stack Overflow
  I’ve been struggling for a while to package my Python script with PyInstaller into a standalone executable, but the main blocker seems to be getting ffmpeg and yt_dlp bundled and accessible in the final build. My Goal I want a true standalone executable created with PyInstaller (--onefile) that includes ffmpeg so that it works out-of-the-box on any machine, without requiring users to install ffmpeg or set up environment variables. Question How can I properly bundle ffmpeg into my PyInstaller build? Has anyone successfully bundled ffmpeg with --onefile and can share (...)
• 20:59
  ffmpeg not working after update to Mavericks - Hudson Buddy Newest 'ffmpeg' Questions - Stack Overflow
  After recently updating to Mavericks 10.9.5, my installation of ffmpeg has been bugging out Error: dyld: Library not loaded: /usr/local/lib/libx264.142.dylib Referenced from: /usr/local/bin/ffmpeg Reason: image not found Trace/BPT trap: 5 Any thoughts? I'm not very familar with manual compiling and I installed ffmpeg through Homebrew. I tried uninstalling and doing: brew install ffmpeg --HEAD brew install ffmpeg --build-from-source but it spits back a ./configure error ==> ./configure (...)
• 05:50
  FFmpeg libmp3lame conversion from WhatsApp .opus causes buzzing noise during silence - cbdeveloper Newest 'ffmpeg' Questions - Stack Overflow
  I've tried several different ffmpeg using libmp3lame param combinations to successfully convert a whatsapp.opus (recorded in WhatsApp) audio file into mp3, but I always end up with crackling, buzzing weird noises during moments of silence. In my use case, it's a simple audio of voice, not music. While the person is speaking, it seems fine. The issue always seems to happen during silence. Original audio is clean. ffmpeg('./whatsapp.opus') .audioCodec('libmp3lame') .audioBitrate('48k') .audioChannels(1)  (...)

7 septembre

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

• 21:47
  Rounded corners in subtitle (Advanced Substation Alpha [.ass]) - Leander Mihm Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to have rounded corners with the BorderStyle 4 in .ass (Advanced Substation Alpha)? I only found out that the BorderStyle 4 exists, because I was looking at this stackoverflow. Is there any good and complete documentation of the Advanced Substation Alpha format? I'm currently using the following configuration: BorderStyle=4 Outline=10 --

6 septembre

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

• 20:04
  ffmpeg, stretch audio to x seconds - Max Doumit Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to make an audio file be exactly x second. So far i tried using the atempo filter by doing the following calculation Audio length / desired length = atempo. But this is not accurate, and I am having to tweak the tempo manually to get it to an exact fit. Are there any other solutions to get this work ? Or am I doing this incorrectly? My original file is a wav file, and my output in an mp3 Here is a sample command ffmpeg -i input.wav -codec:a libmp3lame -filter:a "atempo=0.9992323" -b:a 320K output.mp3 UPDATE: I was able to (...)
• 12:24
  import moviepy error issue with python3.9+ and matplotlib on latest MacOS M1 - Arya Keni Newest 'ffmpeg' Questions - Stack Overflow
  For python 3.9+ there seems to be an error when I import moviepy after a pip install for moviepy with the correct command as per docs. I am trying an alternative to save animated plots from matplotlib from .gif format to .mp4 format, but matplotlib on MacOS (M1 chip) supports only .gif due to a lack of the "FFMpeg" process (which stays unresolved after pip installs as well). Any clue what to do here?
• 12:23
  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.m3u8) 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 some encoder which was not actually used for any stream. The windows batch command: ffmpeg (...)
• 12:18
  AWS Lambda failed to resolve hostname in child_process spawn - warly Newest 'ffmpeg' Questions - Stack Overflow
  i'm trying to get ffmpeg working in AWS Lambda reading from and writing to S3. I crawled through dozens of aws documentations, stackoverflow questions and blog posts. All do it slightly different, but in the end none of them worked for me. So I hope to find help here :) I sticked to the tutorial from InPlainEnglish: https://plainenglish.io/community/automated-video-processing-with-aws-lambda-and-ffmpeg-2834b7 The ffprobe command does work, so ffmpeg is callable. But when calling ffmpeg within a child_process.spawn command i get the error Failed to resolve hostname (...) -- https://plainenglish.io/community/automated-video-processing-with-aws-lambda-and-ffmpeg-2834b7

5 septembre

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

• 07:30
  ffmpeg libx264: whats the difference between crf and profile and preset in terms of quality (bitrate) - Santhosh Newest 'ffmpeg' Questions - Stack Overflow
  In ffmpeg while encoding with libx264 i came across crf, profile and preset Whats the difference between them in terms bitrate. And if i am using all the three, will they conflict among each other or which one will be effective.
• 06:55
  Getting "unable to decode APP fields" while playing USB webcam stream through ffplay - Syed Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to play USB Webcam stream(not sure in which format it is..) using ffplay in windows. I can see the video without any issue, But I am keep getting below error in console. ffplay.exe -f dshow -i video="Logitech HD Webcam C615" -loglevel debug [mjpeg ⓐ97a118cc80] unable to decode APP fields: Invalid data found when processing input check logs for more details Do I really need to worry about this error? Or any filter that I need to provide in command to get ride of this error . Note: I tried to save stream to a file using (...) -- check logs for more details

4 septembre

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

• 08:38
  ffmpeg: fisheye -> rectilinear conversion with remap_opencl: green tinted output [closed] - thinkfat Newest 'ffmpeg' Questions - Stack Overflow
  I'm having a bit of a problem converting a fisheye video from an Insta360 camera to rectilinear. I know how to do it with the v360 filter but obviously it's slow, just barely realtime. I'm trying to set up a filter chain that uses remap_opencl and vaapi to keep everyhing in hw frames. I did succeed, technically, but the output video has a green tint, which hints that there is some pixel format related issue. The whole thing is on Linux, (openSUSE Tumbleweed if thats of any interest), a KabyLake platform with Intel HD 620 GPU. Using the NEO OpenCL driver from Intel (...)

3 septembre

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

• 12:41
  How to multiply and rename one image to n-times in ffmpeg? - LookAndSee Newest 'ffmpeg' Questions - Stack Overflow
  For making a video I want to multiply one image of a folder e.g. for 30fps and 30sec to 900 times with an uprising index. How can I copy one image n-times and rename it with ffmpeg? How I did it by now: mark all Ctrl+C and Ctrl+V/ mark all Copy + Paste 2-4-8-16-32-64-128-256-576-1152 I did numbering with total commander "multi-rename-tool" I like to do it with a loop-function in ffmpeg but I have no (...)

2 septembre

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

• 20:00
  Unable to stream video file from MediaMTX media server to browser via WebRTC - thegreatjedi Newest 'ffmpeg' Questions - Stack Overflow
  I took over a repository at work. It's a working demo comprising a web server which receives video and camera feeds from a media server (built from the rtsp-simple-server Docker image) via a RTSP relay server and streams the feeds to the client, all deployed via Docker Compose. I'm trying to switch over to use WebRTC instead. rtsp-simple-server has upgraded into MediaMTX since the time the demo was created 2 years ago. This is the relevant section of the updated Docker Compose configuration: media-server: image: bluenviron/mediamtx:latest-ffmpeg expose:  (...) -- MediaMTX
• 18:01
  FFMPEG mpegts rtsp streaming [closed] - Steve Newest 'ffmpeg' Questions - Stack Overflow
  Using ffmpeg I can send a stream to my rtsp server like so: ffmpeg -re -i input.ts -map 0 -c copy -f rtsp rtsp://localhost:8554/push/mystream This .ts file contains metadata (KLV specifically). When streaming to rtsp via ffmpeg it sends the server an ANNOUNCE that shows two media descriptors - one for the h264 video and the KLV data in the container. My server does not support this. It needs a single media descriptor. I'm able to produce a single containerized rtsp communication/ rtp payloads with gstreamer. The SDP has a single media descriptor RTP/AVP 33 and (...)
• 13:28
  How to concatenate images into a video with ffmpeg [closed] - JosefLitos Newest 'ffmpeg' Questions - Stack Overflow
  No matter what method for concatenation I use, the result always contains only the first two images as soon as I specify the output framerate (-r). Some methods don't work at all. Examples: Broken even without the output framerate: ffmpeg -hide_banner -v error -framerate 2 \\ -i 0.jpg -i 1.jpg -i 2.jpg -i 3.jpg \\ -filter_complex '[0:v][1:v][2:v][3:v]concat=n=4:v=1:a=0' \\ -r 2 /tmp/test.mp4 ↑↑ For 3 images I can add -loop 1 before the last input and then cut the output to match the time, but 4 images are impossible. Works only without (...)

31 août

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

• 17:32
  Add, remove and tune filters on running ffmpeg [closed] - Turmund Newest 'ffmpeg' Questions - Stack Overflow
  Preface I have been fiddling around with ffmpeg and ffplay using command line adding and tuning filters and effects. It quickly becomes rather tiresome to start playback with some audio file stop modify command back to 1. When for example fine-tuning noise reduction or adding effects and equalizer. I have played around with using zmq to tune filters by executing commands in a different terminal, but this also becomes somewhat cumbersome. I want some interface where I can add, remove and tune filters during runtime / while listening to the (...) -- API example for audio decoding and filtering
• 02:52
  Problem using ffmpeg to remove silence at beginning of audio file [closed] - José A. Newest 'ffmpeg' Questions - Stack Overflow
  I am working with some mp3 audio files and sometimes find it necessary to remove the silence at the beginning of them. By searching with google, the AI suggested that I use the following ffmpeg command, which I decided to try: ffmpeg -i input.mp3 -af silenceremove=start_periods=1:start_duration=1:start_threshold=-60dB output.mp3 For some reason, however, the audio is cut off in the attempt to remove the silence at the beginning. Might anyone know what could be wrong? I am including a link to one of the audio files that I am trying to trim below to make it easier to test the (...) -- Preface to “The Great Controversy”

30 août

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

• 13:53
  Bash script to recursive find and convert movies - Jacco Newest 'ffmpeg' Questions - Stack Overflow
  in my large movie collection I would like to search for movies with the primary (first) audio track with DTS coding to be converted to Dolby. My problem would be the first track I think. My current bash script will list any movie containing a DTS track, but does not specify which track. #!/bin/bash # My message to create DTS list find /home/Movies -name '*.mkv' | while read f do if mediainfo "$f" | grep A_DTS; then echo $f fi done After that I would like to run this command ffmpeg -i $f -map 0:v -map 0:a:0 -map 0:a -map 0:s (...)

29 août

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

• 16:00
  Preserving alpha when re-encoding VP8/VP9 WebM in FFmpeg without specifying input codec [closed] - mstyura Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to understand why re-encoding a VP8 or VP9 WebM with alpha channel produces black pixels instead of preserving transparency. I simplified the problem to re-encoding VP8 with alpha to VP9 with alpha: ffmpeg -i video-vp8-with-alpha.webm -c:v libvpx-vp9 video-vp8-with-alpha-bad.webm The output loses the alpha channel. ffprobe shows: Input #0, matroska,webm, from 'video-vp8-with-alpha-bad.webm': Metadata: ENCODER : Lavf62.1.103 Duration: 00:00:03.07, start: 0.017000, bitrate: 152 kb/s Stream #0:0: Video: vp9 (Profile 0), (...) -- 0828a3b636, BtbN/FFmpeg-Builds
• 01:23
  I want to add a watermark using ffmpeg's cuda, but every time I try the filter in the configuration, the filter doesn't work [closed] - Maeve Newest 'ffmpeg' Questions - Stack Overflow
  AVFilterGraph* filter_graph = avfilter_graph_alloc(); char filter_desc[2048]; snprintf(filter_desc, sizeof(filter_desc), "buffer=video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:frame_rate=%d/%d[in];" "color=color=blackⓐ0:size=200x50[bg];" "[bg]drawtext=text='%s':" "fontfile='%s':" "fontsize=24:" "fontcolor=whiteⓐ0.8:" "box=1:" "boxcolor=blackⓐ0.5:" "x=10:y=10[watermark_text];" "[watermark_text]hwupload_cuda[watermark];" "[in][watermark]overlay_cuda=x=10:y=10[out];"  (...)
• 09:17
  Using FFmpegFrameRecorder using bytedeco/javavc, joining together specific parts of a video causes audio and image to fall out of sync - Tomer Shahar Newest 'ffmpeg' Questions - Stack Overflow
  I am taking a video file representing a live stream vod of several ours, I am trying to create an output file that is a few minutes of highlights taken from different parts of the video (that I let the streamer choose). I want to preserve quality as much as possible. For the most part this works, but with every jump to a new section in the VOD, I'm noticing a bigger and bigger gap forming between audio and video, falling out of sync in the output. I notice that some vods have imperfect framerate (59.998 or something of that sort) but I have been trying to adjust it in my (...)

28 août

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

• 15:10
  FFMPEG overlay:enable removing video from screen? [closed] - Harold Obasi Newest 'ffmpeg' Questions - Stack Overflow
  i am working on a filter that shows each video on a screen based on which video's turn it is in this case the screen is 1080x1920 (for tik tok, short form content etc) with a black background, and this is the filter i have so far turns (time ranges each video should be present on screen) v0: (0 - 5), (10 - 15) v1: (5 - 10) ffmpeg -i video1.mp4 -i video2.mp4 -i audio.mp3 -filter_complex " [0:v]scale=1080:-1[v0]; [1:v]scale=1080:-1[v1]; color=size=1080x1920:color=black[bg]; [v0][v1]overlay=x=0:y=100:enable='between(t,5,10)'[base];
• 13:20
  Why use the custom ffmpeg cuda filter to add watermarks, but it always crashes and cannot be used, how to fix it? - Maeve Newest 'ffmpeg' Questions - Stack Overflow
  AVFilterGraph* filter_graph = avfilter_graph_alloc(); char filter_desc[2048]; snprintf(filter_desc, sizeof(filter_desc), "buffer=video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:frame_rate=%d/%d[in];" "color=color=blackⓐ0:size=200x50[bg];" "[bg]drawtext=text='%s':" "fontfile='%s':" "fontsize=24:" "fontcolor=whiteⓐ0.8:" "box=1:" "boxcolor=blackⓐ0.5:" "x=10:y=10[watermark_text];" "[watermark_text]hwupload_cuda[watermark];" "[in][watermark]overlay_cuda=x=10:y=10[out];"  (...)

27 août

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

• 16:38
  react vite ffmpeg how to resolve worker module returning 404 - pmkob Newest 'ffmpeg' Questions - Stack Overflow
  I have imported the js, wasm, and worker modules into my project https://unpkg.com/ⓐffmpeg/coreⓐ0.12.6/dist/esm/ffmpeg-core.js https://unpkg.com/ⓐffmpeg/coreⓐ0.12.6/dist/esm/ffmpeg-core.wasm https://unpkg.com/ⓐffmpeg/core-mtⓐ0.12.2/dist/esm/ffmpeg-core.worker.js and upon calling the function that the load is in, i get the error in the worker module Request URL: http://localhost:3000/node_modules/.vite/deps/worker.js?worker_file&type=module Status Code: 404 Not Found Referrer Policy: strict-origin-when-cross-origin In order to resolve this (...) -- https://unpkg.com/@ffmpeg/core@0.12.6/dist/esm/ffmpeg-core.js, https://unpkg.com/@ffmpeg/core@0.12.6/dist/esm/ffmpeg-core.wasm, https://unpkg.com/@ffmpeg/core-mt@0.12.2/dist/esm/ffmpeg-core.worker.js, https://github.com/ffmpegwasm/ffmpeg.wasm/issues/532
• 15:01
  GStreamer vs FFmpeg [closed] - user1129474 Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to record a Video with the OpenCV Framework and would like to save it into an Matroska(mkv) Container together with some additional data streams. First I thought using FFmpeg is the way to go. But while looking into the OpenCV Source code and searching on the web I found GStreamer. Because the documentation in GStreamer is much better than the FFmpeg documentation I would prefer using this Framework. In my understanding GStreamer is primarily used for Streaming, but could also recode and mux video data. Is there any disadvantage when using GStreamer (...)

26 août

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

• 15:31
  ValueError: No valid stream found in input file. Is -1 of the desired media type? - Haozhe Xie Newest 'ffmpeg' Questions - Stack Overflow
  While using torchcodec with the following code import torchcodec file_path = "/path/to/episode_000000.mp4" x = torchcodec.decoders.VideoDecoder(file_path, seek_mode="approximate") I got the following error: [rank0]: File "/home/hzxie/Development/vla/utils/datasets.py", line 202, in _get_video_bytes [rank0]: x = torchcodec.decoders.VideoDecoder(vbytes) [rank0]: File "/home/hzxie/Applications/miniconda3/envs/lerobot/lib/python3.10/site-packages/torchcodec/decoders/_video_decoder.py", line 98, in __init__ [rank0]: core.add_video_stream( [rank0]: File (...)

25 août

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

• 12:47
  Make gif (ffmpeg) using MOST RECENT 7 jpg files in a directory - Brad Sullivan Newest 'ffmpeg' Questions - Stack Overflow
  I have a bash script which runs on a cron, to take screenshots of my cctv 1x per day to do an annual timelapse. It all works, and I get a YTD sofar.gif of the very first screenshot to the very last screenshot -- which is now quite long. I wanted to add a line to make last7days.gif so I could get a shorter weekly gif etc. I have searched this site and the web and can list the newest 7 files in terminal using: ls -1t | head -n 9 | tail -n 7 (this removes the .gif and .mov which are modified last) but I do not know how to make that vertical list of 7 filenames into a variable to (...)
• 07:32
  Streaming Local Video file as RTSP and publish to a port - Gary Lu Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to setup a single docker that can stream local file as rtsp to a port. Meaning, within the docker there will be some local videos publish as rtsp to a port of that docker. Then externally, I can fetch the stream from rtsp://:/mystream I tried looking into rtsp-simple-server, but it does not seem to have the option of local file streaming, rather it requires first set up a docker server then using ffmpeg to publish video to that server. Is there a way to achieve the wanted single docker RTSP stream server? There is another response of building a docker (...)

24 août

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

• 22:46
  OpenCV VideoWriter using ffmpeg with "Could not open codec 'libx264'" Error [closed] - user2262504 Newest 'ffmpeg' Questions - Stack Overflow
  I want write Mat images into video using VideoWriter on Ubuntu 12.04. But when constructing VideoWriter, errors came out. It seems that OpenCV invoke ffmpeg API using default parameters and ffmpeg invoke x264 using its default parameters. Then these setting is broken for libx264. Thus the "Could not open codec 'libx264'" error. Anyone has ideas to solve this problem? More specifically: anyone knows where and how OpenCV invoke ffmpeg API? how to change ffmpeg default settings using code, hopefull, can be easily embeded into OpenCV? will changes of (...)
• 18:54
  Hikvision NVR video conversion ffmpeg [closed] - astralmaster Newest 'ffmpeg' Questions - Stack Overflow
  I have a Hikvision NVR that stores security camera footage that I need to display on a website. I know that Hikvision uses proprietary H.264 codec that makes it impossible to play (coherently) in popular video players, like VLC, unless you install that codec everywhere you play it. My plan was to transcode the video using ffmpeg to regular H.264 codec and AAC for audio but the produced file has the same issues as the original - no audio when playing and very disruptive video. So the question is, does ffmpeg support encoding from Hikvision video/audio codecs? Or perhaps (...) -- https://www.dropbox.com/s/9ccptsuiqk2ntsv/1.zip?dl=0
• 23:00
  Converting DAV to MP4 and OGG - mackowiakp Newest 'ffmpeg' Questions - Stack Overflow
  I want to prepare WEB page containing films from security camera recorders. Each recorder transmit video files in DAV format so each film is converted to MP4 format by script, using such syntax: ffmpeg -y -i movie.dav -vcodec libx264 -crf 24 movie.mp4 So I included in HTMLv5 code such entry: It works correctly with Chrome but not with Firefox. For proper work in FF it is necessary add link to OGG file. So correct HTMLv5 syntax for both browsers should look like this: Can anybody help (...)
• 16:32
  Use internal video time in the filename [closed] - FlumeRS Newest 'ffmpeg' Questions - Stack Overflow
  when I use -vf drawtext="text='%e:t*1000'", I am able to see the timestamp exported in each image generated by ffmpeg. Instead of (or maybe, In addition to) having this inside the image, can I also export this in the filename that the jpg is being exported to?
• 11:38
  Use internal video time in the filename (for programming) [closed] - FlumeRS Newest 'ffmpeg' Questions - Stack Overflow
  FAO: Moderators. Please do not close questions on ffmpeg because this is a suite often used in AI programming (python et al) for analysing video images. when I use -vf drawtext="text='%e:t*1000'", I am able to see the timestamp exported in each image generated by ffmpeg. Instead of (or maybe, In addition to) having this inside the image, can I also export this in the filename that the jpg is being exported to?

23 août

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

• 11:39
  Relation between lineSize, width, height in FFMPEG - pseudo_teetotaler Newest 'ffmpeg' Questions - Stack Overflow
  I am confused between linesize, height, width in AVFrame. As per my understanding, linesize is the strides, which ideally should be the width of the image, right ? However, the value of width and linesize are not matching. AVFrame pFrame; cout<<"PFrame Linesize :"<data.linesize[0]<width< Output : PFrame Linesize : 64 PFrame width : 12 My frame is of dimension 12*12. According to answers to this post, linesize should be same as width. But I am unable to understand why they are different (...)
• 10:43
  Set matplotlib video animation size (1920x1080) - David Ferris Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to create a matplotlib animation that is 1920x1080. The following animation generated is (1152x648), which is the right ratio but too small. I know that I can do this after the fact with ffmpeg, but I'd like to avoid re-encoding if possible. y = my_data fig = plt.figure(figsize=(16,9)) def ani(i): # Animation Code animator = FuncAnimation(fig, ani, frames=y.shape[0]) # Can't figure out what extra_args to set here ffmpeg_writer = FFMpegWriter(fps=y.shape[0]/sound.duration_seconds, extra_args=['-scale', (...)

22 août

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

• 05:59
  how to upscale video max dimensions which fit within target size using ffmpeg? [closed] - bguiz Newest 'ffmpeg' Questions - Stack Overflow
  I'm using the following ffmpeg command to crop off the top N pixels from the input video, and replace it with a black padding: INVID="" OUTVID="" ffmpeg \\ -y \\ -i "$INVID" \\ -vf "crop=iw:ih-30:0:30,pad=iw:ih:0:0:black" \\ "$OUTVID" ffprobe "$OUTVID" In the ffprobe output, I can see the dimensions of the output video. However, the dimensions of the output video is entirely dependent on the dimensions of input video. In some cases, my input video are in odd sizes, and I wish to scale them up to a particular set of (...)
• 08:12
  Converting mkv files to mp4 with ffmpeg-python [closed] - myth0s Newest 'ffmpeg' Questions - Stack Overflow
  I have a lot of .mkv files that I'm trying to convert to .mp4, so I decided to try and program a solution in python. After a few hours, trying to figure out how to copy the subfolders too, I gave up on it and decided to stick with converting individual subfolders, and then copying them over to another directory. I've made a simple script, that should convert .mkv files that are in the same folder as the script. However, I keep getting this error: FileNotFoundError: [WinError 2] The system cannot find the file specified Here's my code: import (...)

21 août

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

• 14:00
  How to Terminate a Process Normally Created using ProcessBuilder - Bilal Ahmed Yaseen Newest 'ffmpeg' Questions - Stack Overflow
  I am creating Processes using ProcessBuilder in my Java Application. The created process executes some FFMPEG commands which actually copy the RTSP streams in specified destination media file. ProcessBuilder builder = new ProcessBuilder("ffmpeg", "-i", RTSP_URL, "-f", fileFormat, destFilePath); Process processToExecute = builder.start(); I want to close the process before it completes its execution. So, If I run this FFMPEG command directly in windows CMD and then press 'CTRL+C' after 5 seconds then process get terminates with status '2'. And I (...)
• 06:48
  Can moviepy render via GPU, using something like FFMPEG? - Shenhav Mor Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on something that concatenate videos and adds some titles on through moviepy. As I saw on the web and on my on pc moviepy works on the CPU and takes a lot of time to save(render) a movie. Is there a way to improve the speed by running the writing of moviepy on GPU? Like using FFmpeg or something like this? I didn't find an answer to that on the web, so I hope that some of you can help me. I tried using thread=4 and thread=16 but they are still very very slow and didn't change much. My CPU is very strong (i7 10700k), but still, rendering on (...)

20 août

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

• 14:05
  Flutter Android release crash with ffmpeg_kit_flutter_new: Bad JNI version returned from JNI_OnLoad in libffmpegkit_abidetect.so (debug works) [closed] - Muhammad Rakha Almasah Newest 'ffmpeg' Questions - Stack Overflow
  Problem My Flutter app crashes only in release when the FFmpegKit plugin is registered. The app runs fine in debug on the same devices. The crash happens before my UI shows up, during plugin registration. Error (release logcat) On Samsung SM-A105G (Android 11, API 30, 32-bit device): E/AndroidRuntime: FATAL EXCEPTION: main java.lang.Error: FFmpegKit failed to start on brand: samsung, model: SM-A105G, device: a10, api level: 30, abis: armeabi-v7a armeabi, 32bit abis: armeabi-v7a armeabi, 64bit abis: . at (...)
• 02:52
  ffmpeg - How to determine if -movflags faststart is enabled? PHP - IIIOXIII Newest 'ffmpeg' Questions - Stack Overflow
  While I am able to encode an mp4 file which I can play on my local windows machine, I am having trouble encoding files to mp4 which are readable when streaming by safari, etc. After a bit of reading, I believe my issue is that I must move the metadata from the end of the file to the beginning in order for the converted mp4 files to be streamable. To that end, I am trying to find out if the build of ffmpeg that I am currently using is able to use the -movflags faststart option through php - as my current outputted mp4 files are not working when streamed (...)

19 août

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

• 14:05
  Unable to find a suitable output format for 'ffmpeg' - ffmpeg: Invalid argument [closed] - Alvydas Juodikis Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to work through a tutorial I found online that converts an RTSP URL to a HSL stream. Upon executing the command on ubuntu 20.04, I get the following error: "[NULL ⓐ 0x55985b9bab80] Unable to find a suitable output format for 'ffmpeg' ffmpeg: Invalid argument" These were my commands: ffmpeg -v info \\ -i \\ -c:v copy -c:a copy -bufsize 1835k -pix_fmt yuv420p \\ -flags -global_header \\ ffmpeg -hls_time 10 -hls_list_size 6 -hls_wrap 10 \\ ffmpeg -start_number 1 Home/Documents/ffmpegsolution/video.m3u8 (The example said that I (...) -- https://www.thewebblinders.in/programming/article/rtsp-streaming-on-a-web-browser-6069

18 août

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

• 01:03
  Trouble saving matplotlib animation with ffmpeg [closed] - kevinkayaks Newest 'ffmpeg' Questions - Stack Overflow
  I installed ffmpeg and would like to save an animation. My code is #evo is the dataset composed of sequence of images evo = np.load('bed_evolution_3000iter_2.npy') fig = plt.figure(figsize=(15,15*2*width/length)) # make axesimage object # the vmin and vmax here are very important to get the color map correct im = plt.imshow(np.transpose(evo[0]), cmap=plt.get_cmap('jet'), vmin=0, vmax=1300) cbar_ax = fig.add_axes([0.85, 0.15, 0.05, 0.7]) fig.colorbar(im, cax=cbar_ax) fig.subplots_adjust(right=0.8) def (...) --

16 août

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

• 19:07
  FFMPEG: recode all audio streams while keeping originals [closed] - Olirav Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to add an additional set of audio tracks into some video files, as part of an automated process. I would like to keep all the original audio tracks and have a second re-coded copy. What I have been using is: ffmpeg -i file -map 0:v -codec:v copy -map 0:a -codec:a copy -map 0:a:0 -codec:a:0 aac -strict experimental ...(Bitrate, filters etc all with :a:0) -map 0:s -codec:s copy output file However, I can't work out how to change this to handle input files that have multiple audio tracks as it will only convert the first. If I (...)
• 00:31
  How to specify start and end frames when making a video with ffmpeg [closed] - supercool Newest 'ffmpeg' Questions - Stack Overflow
  I am working with python in a jupyter notebook, and I am trying to use ffmpeg to specify the start and end images and convert several images from a folder into a single video. I have a folder, 'images', with the images inside labeled, 'image0', 'image1', 'image2', etc. I would like to specify the start and end images in my video. For example, I would like to be able to make the video using 'image100', to 'image200'. Right now, I have: !/home/jovyan/ffmpeg-dir/ffmpeg -i /home/jovyan/images/image%d.bmp -frames:v 1000 (...)

14 août

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

• 10:16
  Unable to import audio on python using ffmpeg [closed] - Calebe Piacentini Newest 'ffmpeg' Questions - Stack Overflow
  I'm running my code on a VM, so I can't add it to my path. I want to do: audio = AudioSegment.from_mp3(path_mp3) audio.export(path_wav, format="wav") I keep getting: FileNotFoundError: [WinError 2] The system cannot find the file specified I tried GPT (and Claude, and Deepseek, etc....) and looking at other questions here posted, without sucess. I know I must have ffpmeg. I have download it and added the .exe at both my script folder (such as suggested elsewhere) and also tried adding the option directly to AudioSegmenter, as (...)
• 10:12
  very low latency streaming with ffmpeg using a webcam [closed] - userDtrm Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to configure ffmpeg to do a real-time video streaming using a webcam. The ffmpeg encoder command I use is as follows. ffmpeg -f v4l2 -input_format yuyv422 -s 640x480 -i /dev/video0 -c:v libx264 -profile:v baseline -trellis 0 -subq 1 -level 32 -preset superfast -tune zerolatency -me_method epzs -crf 30 -threads 0 -bufsize 1 -refs 4 -coder 0 -b_strategy 0 -bf 0 -sc_threshold 0 -x264-params vbv-maxrate=2000:slice-max-size=1500:keyint=30:min-keyint=10: -pix_fmt yuv420p -an -f mpegts udp://192.168.1.8:5001 The ffplay command used to display the video (...)
• 14:16
  How to convert an AIFF file to an mp3 on Macos? [closed] - Richard Newest 'ffmpeg' Questions - Stack Overflow
  I just burned a CD to my macbook pro. The files are in AIFF. I would like them in a "websafe" format.
• 07:17
  How To Convert MP4 Video File into FLV Format Using FFMPEG [closed] - nipul_tech Newest 'ffmpeg' Questions - Stack Overflow
  I have to convert an MP4 Video File into FLV format using FFMPEG which I received from different mobile device. I found most of the stuff to convert flv video into mp4 and all. Can any body help me out to convert mp4 format into flv using FFMPEG. I am using a Windows 7 64bit machine.
• 10:10
  How to write a video stream to a server? - The Mask Newest 'ffmpeg' Questions - Stack Overflow
  Recently been playing with FFmpeg and it's powerful abilities. Working on a cool project where I'm trying to create a live video stream using FFmpeg. The client (reactJs) and server (nodeJS) are connected via web-socket. The client sends the byte packets to server and the server then spawns an FFmpeg process and serve it to an nginx server. Client(live-stream.js): const stream = await navigator.mediaDevices.getUserMedia( video: true, audio: true, ); videoRef.current.srcObject = stream; const ingestUrl = `ws://localhost:8081/ws` const (...)
• 10:06
  How can i mux H264 stream into MP4 file via libavformat - Brian Newest 'ffmpeg' Questions - Stack Overflow
  I want to realize an application that firstly decode a multi-media file(such as test.mp4 file, video codec id is H264), get a video stream and an audio stream, then make some different in the audio stream, at last encode the video stream (use libx264) and audio stream into a result file (result.mp4). To promote the efficiency, I omitted the decode and encode of video stream, i get the video packet via function av_read_frame, then output it directly into the result file via function av_write_frame. But there is no picture in the output file, and the size of output file is fairly (...)

13 août

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

• 00:48
  Bash script having custom functions not running under systemd service - nightcrawler Newest 'ffmpeg' Questions - Stack Overflow
  I have this script to get images from a webcam & process them via RKNN NPU #!/bin/bash # Define the temporary directory for images TEMP_DIR="/media/32GB/pics" # Define the resize/letterbox option RESIZE_OPTION="letterbox" # or "letterbox" depending on your requirement # Define the output image path pattern OUTPUT_IMAGE_PATH="/media/32GB/processed_pics/%Y-%m-%d_%H-%M-%S_processed.jpg" # Define the path to the rknn_yolov5_demo_Linux binar BINARY_PATH="$HOME/ezrknn-toolkit2/rknpu2/examples/rknn_yolov5_demo/install/rknn_yolov5_demo_Linux" # (...)

12 août

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

• 11:11
  ffmpeg - convert image sequence to video with reversed order [closed] - 0__ Newest 'ffmpeg' Questions - Stack Overflow
  Looking at the docs, it is not apparent to me whether ffmpeg would allow me to convert an image sequence to a video in reverse order, for example using this sequence: frame-1000.jpg frame-999.jpg frame-998.jpg ... frame-1.jpg Is it possible to give a "step direction" for the frame indices? -- the docs

11 août

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

• 16:52
  How to finalize LL-DASH stream MPD file using Shaka Packager [closed] - Arjit Newest 'ffmpeg' Questions - Stack Overflow
  I'm using Shaka Packager with FFmpeg piping to produce LL-DASH live streams from an NGINX-RTMP input. Streaming works fine, but when the publisher stops streaming, Shaka Player continuously trying to fetch & throws 404 errors for segment files that don’t exist. For example, if the last segment is 29.m4s, the player still tries to fetch: GET http://localhost:8080/dash/stream/480p_30.m4s 404 (Not Found) GET http://localhost:8080/dash/stream/720p_31.m4s 404 (Not Found) Even though the stream ended at segment 29. Shaka-packager: "$SHAKA_PACKAGER_BIN" (...)

10 août

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

• 21:39
  How to insert background video using ffmpeg [closed] - user3714098 Newest 'ffmpeg' Questions - Stack Overflow
  I have a video.mp4 (640x360) and image.jpg (1280x720). I want to make image.jpg as a background of video.mp4 using ffmpeg: --