Unanswered Questions
2,998 questions with no upvoted or accepted answers
19
votes
0
answers
9k
views
Extracting Opus from WebM losslessly with FFmpeg or MKVToolNix
I have come across a strange problem when remuxing Opus audio stream from WebM to another container like ogg or opus.
Running the output files through a spectrum analyzer clearly shows that there is ...
CommunityBot
- 1
11
votes
1
answer
6k
views
Combine/concatenate multiple MP4 files, making each file into a chapter
I am looking to use handbrake to combine 43 short mp4 files into one larger file. However, I want to ensure that the start of each file is recognized as a chapter. I'd be using vlc to play the file.
CommunityBot
- 1
10
votes
1
answer
4k
views
How can I compress video by taking advantage of its static content?
I have an HD video that is a presentation, so it consists mostly of still images. It's a 50 minute, 200MB MP4 file, downloaded from YouTube.
Is there a way to take advantage of the static nature of ...
CommunityBot
- 1
9
votes
0
answers
4k
views
Injecting 360 video metadata with ffmpeg
I'm working on a library that injects/embeds/writes metadata into a .mp4 file to allow the video to be displayed correctly as a 360 video. The input file is a standard .mp4 file in the equirectangular ...
- 1
9
votes
0
answers
3k
views
Trying to remove 1152 samples, but the queue is empty
I am streaming mp3 files,using this command :
ffmpeg -re -i 'INPUT.mp3' -map_metadata -1 -map 0:0 URL
I create a loop which stream files,and there is no problem with reviving stream,just from server ...
- 193
8
votes
0
answers
14k
views
How to utilize all cores on high-end CPUs using ffmpeg
I have a high-end HPE ProLiant DL325 G10 server with an AMD EPYC 7401P 24-core/48-thread CPU, 128GB DDR4 RAM, and a Intel P4800x PCIe NVMe. I tried to run ffmpeg to convert a video (MKV) to MP4 for ...
- 81
8
votes
1
answer
885
views
IE will not seek audio/webm file
I'm trying to create a WebM audio file that will play back and seek in all browsers using the HTML5 <audio> tag and MIME type audio/webm. I've found workarounds to get this to work in all ...
- 4,750
7
votes
0
answers
11k
views
ffmpeg: "moov atom not found" on a seemingly valid file
GoPro cameras cut up video in 4GB MP4 files.
Attempting to merge them with ffmpeg 4.4.1 like so:
ls GH017642.MP4 GH027642.MP4 | while read line; do echo "file '$line'"; done | ffmpeg -...
- 363
7
votes
1
answer
4k
views
How to copy unsupported data streams with ffmpeg?
Briefing
I have some .wmv files (actually, my full batch file deals with multiple filetypes) with weird data streams that are needed for an external program to recognize them.
I'm trying to remove ...
CommunityBot
- 1
6
votes
0
answers
218
views
How to correct Hindi text rendering when using FFmpeg?
I have a FFmpeg script to add some Hindi text to the MP4 video file.
The FFmpeg command looks like this
ffmpeg -i template_video.mp4 -filter_complex "drawtext=text='नमस्कार जी मैं हूँ':fontfile=...
- 161
6
votes
0
answers
3k
views
Android TCP error failed to resolve host name from static library
I'm using ffmpeg on android and i have encountered and error, that does not occur when i'm using the library on my linux VM.
I'm using FFmpeg Static Builds, from here.
I am using the stable 3.1.5 ...
- 1
6
votes
1
answer
3k
views
Convert png sequence to x264 with ffmpeg
I am trying to convert a series of pngs into an mp4 video. I am using ffmpeg, and want to encode the video with the H.264 codec. Using the command
ffmpeg -y -r 30 -b 1800k -i _tmp%04d.png -vcodec ...
CommunityBot
- 1
6
votes
0
answers
8k
views
Stream video with FFMPEG, "Output file does not contain any stream"
I would like to stream an H.264 encoded elementary stream wrapped in RTP headers to a port using FFMPEG.
I have tried the following command lines to no avail...
ffmpeg -i 1080p_1.h264 -f rtp -vcodec ...
- 230k
5
votes
0
answers
519
views
It is possible to use QTGMC deinterlacing with FFmpeg?
I'am using the media-autobuild_suite (on Windows). This tutorial describes how to install and use QTGMC with AviSynth+. My question is can one use FFmpeg only to deinterlace video files with QTGMC?
...
- 127
5
votes
0
answers
4k
views
Using ffmpeg, is it possible to convert a blu-ray folder to a MKV file and add chapter titles in one go?
From time to time, I have to convert the files which are referenced by a playlist from a blu-ray disc to a MKV file. I normally use ffmpeg under Windows in a command line like the following:
"C:\...
- 1,835