16 December

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

• 04:07
  FFmpeg to Shoutcast - Right URL syntax - trianglestream Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream mp3 audio to a shoutcast server. I'm able to do that with icecast servers but the same syntax apparently can't work for shoutcast ones. The main issues is: i have an hostname(IP), a port and a password. Stop. With icecast i use icecast://username:passⓐhost:ip/mount. But, for shoutcast, where do i have to put the password in a stream url? I tried a few things like: http://passⓐhost:port or http://host:port/pass but they did not work. Is anybody able to do this? Thank you! :) P.S. Here is the command i run for stream to Icecast: ffmpeg -f alsa -i pulse -c:a libmp3lame (...) -- http://pass@host:port, http://host:port/pass

15 December

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

• 21:44
  Record multiple RTSP streams into a single file - John Newest 'ffmpeg' Questions - Stack Overflow
  I need to record 4 RTSP streams into a single file. Streams must be placed into the video in this way: ---------- ---------- | | | | STREAM 1 | STREAM 2 | | | | |----------|----------| | | | | STREAM 3 | STREAM 4 | | | | ---------- ---------- I need to synchronize these live streams with about ~1 second accuracy. This is challenging because streams have variable framerate (FPS). I have tried ffmpeg but streams are not synchronized. Here is the code: ffmpeg \\ -i "rtsp://IP-ADDRESS/cam/realmonitor?channel=1&subtype=00" \\ -i "rtsp://IP-ADDRESS/live?real_stream" \\ -i (...) -- vlc, openRTSP, OpenCV
• 18:41
  FFMPEG images to video outputs junk - GreatCorn Newest 'ffmpeg' Questions - Stack Overflow
  I'm very new to using FFMPEG and I'm trying to make an image sequence into a video. However, none of my attempts were succesful. I first tried 825x480 .pngs which resulted in and then 512x512 .jpgs, pretty much the same result. I tried a few codes like ffmpeg -framerate 24 -i img%03d.png output.mp4, ffmpeg -r 1/5 -framerate 24 -i img%03d.png -c:v libx264 -vf -pix_fmt yuv420p output.mp4 and etc. I just don't really understand what I'm supposed to do to prevent (...)
• 18:29
  Vcpkg building FFmpeg with libxml2 - Subestima Newest 'ffmpeg' Questions - Stack Overflow
  First off all im a newbie in this area so if im asking something really stupid or non sense im sorry in advance, so lets get right to the point... im trying to add features to the ffmpeg, and by what i know i have to modify CONTROL file and portfile.cmake but as it seems its not enough i dont understand the errors and i cant get more info about this in the internet so if you could give me some info how to do it properly it would allready mean a lot to me! i will leave the portions of code and error file **portfile.cmake:** if("libxml2" IN_LIST FEATURES) set(OPTIONS "$OPTIONS (...)
• 16:38
  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. So far I have the code below, this will trim 2 seconds from the end of every video that is in de same folder as the .bat file. It will put the new videos inside of a folder called 'new files'. The problem is that the length of the video is not trimmed. Only audio and video. So the last 2 seconds will just be the last frame and no audio. for %%a in ("*.mp4") do ffmpeg -i "%%a" -filter_complex (...)
• 16:32
  How do I stop ffmpeg from spamming itself when I auto restart? - billy61300 Newest 'ffmpeg' Questions - Stack Overflow
  const fs = require("fs"); const express = require("express"); const app = express(); const path = require("path"); const ffmpeg = require("fluent-ffmpeg"); const md5 = require("md5"); const readline = require("readline"); const formidable = require("formidable"); const dir = "Custom/Dir"; const thumb = __dirname + "/thumb"; const ph = __dirname + "/placeholder"; app.use("/serve", express.static(dir)); app.use("/thumb", express.static(thumb)); app.use("/ph", express.static(ph)); const list = []; const listThumb = []; process.on("uncaughtException", (err) => console.log("Caught Exception: (...)
• 15:56
  Python FFmpeg: Unable to set audio stream language - Cryptonaut Newest 'ffmpeg' Questions - Stack Overflow
  I'm using this Python library to programmatically generate a .MOV using a single .WAV (pcm_s24le - 24 bit - 48000 Hz) as input. I've already asked a few questions relating to other aspects of my video pipeline, seen here and here. All I'm trying to do is assign the eng language tag to a single audio stream in the .MOV output. Here's my code: audio = ffmpeg.input(input_audio) output = ffmpeg.output(audio, output_audio, acodec='copy', audio_bitrate=bitrate, metadata='s:a:0 language=eng') output.run() The .MOV output this generates displays the following via FFprobe: Stream #0:0: Audio: (...) -- this Python library
• 15:06
  google speech to text errors out (grpc invalid deadline NaN) - jamescharlesworth Newest 'ffmpeg' Questions - Stack Overflow
  I have a ffmpeg script that cuts an audio file into a short 5 second clip, however after I cut the file, calling the google speech recognize command errors out. Creating a clip - full code link: const uri = 'http://traffic.libsyn.com/joeroganexp/p1400.mp3?dest-id=19997'; const command = ffmpeg(got.stream(uri)); command .seek(0) .duration(5) .audioBitrate(128) .format('mp3') ... which works fine and creates ./clip2.mp3. I then take that file and upload it to speech to text api and it times out (script here. When I put timeout and maxRetries argument I can get the actual error: Error: 2 (...) -- full code link, ./clip2.mp3, here, , clip2.mp3, here, seek command of my ffmpeg script
• 15:44
  Python FFmpeg: Unable to set audio output language - Cryptonaut Newest 'ffmpeg' Questions - Stack Overflow
  I'm using this Python library to programmatically generate a .MOV using a single .WAV (pcm_s24le - 24 bit - 48000 Hz) as input. I've already asked a few questions relating to other aspects of my video pipeline, seen here and here. All I'm trying to do is assign the eng language tag to a single audio stream in the .MOV output. Here's my code: audio = ffmpeg.input(input_audio) output = ffmpeg.output(audio, output_audio, acodec='copy', audio_bitrate=bitrate, metadata='s:a:0 language=eng') output.run() The .MOV output this generates displays the following via FFprobe: Stream #0:0: Audio: (...) -- this Python library
• 13:40
  How to combine The video and audio files in ffmpeg-python - Isaac Wassouf Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to combine a video(with no sound) and its separate audio file I've tried ffmpeg ffmpeg -i video.mp4 -i audio.mp4 -c copy output.mp4 and it works fine. i'm trying to achieve the same output from ffmpeg-python but with no luck. Any help on how to do this?
• 12:00
  Encode video frame by frame using FFmpeg - Lauren Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to encode a WebRTC video. WebRTC provides this method ⓐOverride public void onFrame(VideoFrame frame) //FFmpeg command Each VideoFrame is YUV420 and provides information about rotation(integer), timestamp(long), width and height(https://github.com/webrtc-uwp/webrtc/blob/master/sdk/android/api/org/webrtc/VideoFrame.java). Is it possible to use the above event-method to encode the Video using FFmpeg? Obviously, video frames would be provided dynamically maybe that's an (...) -- https://github.com/webrtc-uwp/webrtc/blob/master/sdk/android/api/org/webrtc/VideoFrame.java
• 11:41
  Python FFmpeg: Single static image coupled with audio outputs massive file size - Cryptonaut Newest 'ffmpeg' Questions - Stack Overflow
  I'm using this Python library to programmatically generate a video using a single static image (.PNG - 3.05 MB - 1920 x 1080) and an audio track (.WAV - pcm_s24le (24 bit) - 48000 Hz - 34.6 MB) as input. I'm using this technique to speed up the video generation process. However, the final file size of output_video_final is 2.33 GB. Considering my input file sizes (.PNG - 3.05 MB / .WAV - 34.6 MB), why is the final .MOV output so large? Here's my code: ''' Generate .MOV using static image as input ''' image = ffmpeg.input(input_image, loop='1', t='00:00:1', framerate='24000/1001', (...) -- this Python library
• 11:31
  stream mp4 file with ffmpeg from a specific time of video - Reza Torkaman Ahmadi Newest 'ffmpeg' Questions - Stack Overflow
  I Want to stream a video file (.mp4) from a differnt starting time. For example I want to stream test.mkv file from minute like 00:02:30 of test.mkv video. So when I stream it to rtmp server, the video is started from 00:02:30 of movie not start. Note: I don't want to wait for that long, I want to start from that moment right after i pressed enter on ffmpeg command, So answers like using cronjob are not useful. Here is the ffmpeg command i'm using: ffmpeg -i test.mkv -pix_fmt yuv420p -vsync 1 -threads 0 -vcodec libx264 -r 30 -g 60 -sc_threshold 0 -b:v 512k -bufsize 640k -maxrate 640k (...)
• 08:25
  ffprobe output video: png - mofei Newest 'ffmpeg' Questions - Stack Overflow
  ffprobe is telling me that my video file is a png. [png_pipe ⓐ 0x7f9ece003c00] Stream #0: not enough frames to estimate rate; consider increasing probesize Input #0, png_pipe, from '1.ts': Duration: N/A, bitrate: N/A Stream #0:0: Video: png, rgb24(pc), 1x1 [SAR 3779:3779 DAR 1:1], 25 tbr, 25 tbn, 25 tbc I'm a little bit confused, as it plays fine as a ts or mpeg file. But when I run ffmpeg -y -i in.ts -acodec copy -vcodec copy out.mp4 the command completes fine, but I end up with a file that can't be played. I get an alert that says "The operation could not be completed" from (...) --
• 05:04
  FFMPEGmediametadataretriever not getting all frames from video - Zain Aftab Newest 'ffmpeg' Questions - Stack Overflow
  I am developing an application that takes a local video file and extracts its frames and write on disk. I am using ffmpegmediametadataretriever to extract frames from videos. I have done the following code retriever.setDataSource(activity, uri); Log.e("duration -> ", retriever.extractMetadata(FFmpegMediaMetadataRetriever.METADATA_KEY_DURATION)); long duration = Long.parseLong(retriever.extractMetadata(FFmpegMediaMetadataRetriever.METADATA_KEY_DURATION)); int everyNFrame = 1; double frameRate = (...) -- ffmpegmediametadataretriever
• 03:20
  FFMPEG: How to encode for seekable video at high key frame interval - Johnny Slack Newest 'ffmpeg' Questions - Stack Overflow
  I'm looking for an ffmpeg comand that's best used if I'm controlling a video to mouse control on "requestAnimationFrame". Basically, it needs to be fast-seeking and encoded at a high key frame interval. I can't seem to nail down what parameters aid in fast-seeking and high key frames. thanks! Johnny
• 02:58
  ffmpeg x264 CPU core scaling - alex416 Newest 'ffmpeg' Questions - Stack Overflow
  Does anyone have any experence with this type of thing? Currently using a Ryzen 7 8c/16T CPU, and using a program called BES. Using 10% CPU, is almost no slower at transcoding from mkv to mp4 (both x264, i know i can just copy them) than using 100% cpu on all 16 threads. So, Since this is the case, What is the ideal core count for libx264? I mean, Does the same type of thing happen with 32 threads? Or 8 threads, etc. -- BES
• 00:49
  Python: How to decode a mp3 chunk into PCM samples? - Bendzko Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to catch chunks of an mp3 webstream and decoding them into PCM samples for signal processing. I tried to catch the audio via requests and io.BytesIO to save the data as .wav file. I have to convert the mp3 data to wav data, but I don't know how. (My goal is not to record a .wav file, i am just doing this to test the algorithm.) I found the pymedia lib, but it is very old (last commit in 2006), using python 2.7 and for me not installable. Maybe it is possible with ffmpeg-python, but I have just seen examples using files as input and output. Here's my code: import requests (...)
• 00:37
  Remove sequentially duplicate frames when using FFmpeg - metlira Newest 'ffmpeg' Questions - Stack Overflow
  Is there any way to detect duplicate frames within the video using ffmpeg? I tried -vf flag with select=gt(scene\\,0.xxx) for scene change. But, it did not work for my case.