All Questions
123
questions
0
votes
0
answers
33
views
How can I add background box to words in ASS subtitle format?
I want to add a background box to the word being spoken, I have tried different ASS subtitle tags but none seems to output my requirement. Which tags can be used to achieve that?
I was trying ...
- 121
0
votes
0
answers
29
views
ffmpeg -c:s dvdsub continues processing after writing the outuput
When running
ffmpeg -y -t 20 -i test-in.ts -c:s dvdsub test-out.mp4
ffmpeg continues to use CPU after writing the 20 seconds of output.
Observed with versions 6.1.1 and 7.0.
There is no such problem ...
- 11
1
vote
0
answers
100
views
How to extract subtitle timestamps using ffprobe (not working as expected)?
I am trying to extract subtitle timestamps from a M2TS file using ffprobe. This does not work as expected. The M2TS file is known to contain 1001 subtitles in track 4, but I am getting about 4000 ...
- 1,835
0
votes
1
answer
173
views
Change subtitle font size with ffmpeg
I’m able to change the FontName when hardcoding subtitles with ffmpeg:
ffmpeg -y -i temp.mp4 -vf subtitles=subtitles.srt:force_style='FontName=Roboto-Condensed-Bold' output.mp4
but unable to change ...
- 137
1
vote
0
answers
49
views
Generating ffmpeg command to mux in subtitles matching the style of VLC
I am trying to mux in subtitles with ffmpeg, but I am having trouble getting the desired style and output with a reference point being VLC's standard format of showing subtitles matching the look of ...
- 11
0
votes
1
answer
208
views
How to convert multiple .VTT segments to one single .VTT file or subtitle file?
I have a list of .VTT segments from a bunch of URLs for a stream looking like these (the total amount of segments is much higher):
https://drod24s.akamaized.net/all/clear/none/d9/...
- 11
0
votes
0
answers
152
views
Disable subtitles by default in a MP4 file using FFmpeg
Is there a way to disable (not to remove) subtitles by default using FFmpeg, I tried:
ffmpeg -i input.mkv -map 0:0 -map 0:1 -map 0:2 -c:v copy -c:a copy -c:s mov_text -disposition:s:s:0 0 output.mp4
...
- 205
2
votes
1
answer
122
views
I cannot seem to add subtitles to MP4 using FFmpeg
I have a video called test_video.mp4 downloaded from YouTube
This is the information of the video obtained by running ffmpeg -i test_video.mp4:
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test_video.mp4'...
- 205
0
votes
0
answers
138
views
How to extract subtitle from usm file
I would like to extract subtitle.txt from usm file, I tried use ffmpeg but it show unspuported file. Hexedit show that file has txt extension. Ffmpeg support demux cri usm file, but I cant figure out ...
0
votes
1
answer
176
views
FFmpeg: How to encoding h264 mkv files in h265 mkv and keep the 2 subtitles streams?
I've lots of mkv files in h264 format with 2 languages of subtitle, and I'm trying to convert them in h265 (with cuda) and keep the 2 subtitles streams.
I've tried that:
ffmpeg -i "xxx.mkv" -...
- 11
3
votes
1
answer
304
views
How to escape file path for burned-in text-based subtitles with FFmpeg?
I'm trying to burn text-based subtitles into a video using ffmpeg, via the command line option -vf followed by subtitles=(filename):si=(subtitle index). I need this to work for both Windows and macOS.
...
- 165
1
vote
1
answer
128
views
Unexpected output when using FFMPEG to add multiple English Subtitles to MP4 file
I am trying to soft-encode 3 subtitle files into my film.
I extracted the subtitles from the DVD using ByteCopy
I am using this command to add the files:
ffmpeg -i BloodDiamond.mp4 -i ...
0
votes
0
answers
160
views
ffmpeg fails to detect subtitles
Just encoding an episode of Game of Thrones, Season 5, Episode 6 - Unbowed Unbent Unbroken. First copy to a temporary file, and thats whats fails to detect all subtitles. Here is an example that works,...
- 11
0
votes
1
answer
227
views
Does 'force_style' work with 'subtitles=video.mkv' for FFMPEG?
I am using this script to encode an burn in subtiles for an entire folder:
for filepath in newFiles:
video = os.path.basename(filepath)
videoName = os.path.splitext(video)[0]
newFile = '%s....
1
vote
0
answers
338
views
How to add multiple audio and subtitle tracks to video?
I'm trying to add an audio track and three subtitle tracks to a video file with already one audio track, but can't get it to work. How does it work (on Linux in case it isn't obvious)?
The subtitle ...
- 145
0
votes
0
answers
334
views
Is there any ffmpeg option to rescale too fast/slow subtitles?
I found subtitles to an old movie but no one fits to it correctly. I found a delay option like:
ffmpeg -itsoffset 2 -i subtitles.srt -c copy subtitles_delayed.srt
which could fit it at current frame, ...
- 129
1
vote
0
answers
653
views
Metadata for closed captioned subtitles
I have a video file (mp4.mp4) and two subtitle files (cc.srt and sub.srt).
Both subtitle files are in English but the first one has sound effects "[gasps]" and "[coughs]".
If I add ...
- 111
0
votes
1
answer
292
views
How to combine these two FFmpeg commands into one command?
I'm using ffmpeg to modify multiple .mp4 files.
First I use this command to change the default language from eng to fr.
ffmpeg.exe -i "imput 1.mp4" -map 0 -c copy -disposition:a:0 0 -...
- 1
1
vote
0
answers
426
views
ffmpeg subtitles does not copy text, only timestamps when converting ass to srt
I've been trying to convert an mkv to mp4 without loosing subtitles, however nothing has worked so far. I've narrowed it down to some sort of bug (I think). I can extract the subtitles from the mkv to ...
- 21
1
vote
1
answer
3k
views
Unable to find a suitable output format for 'copy' copy: Invalid argument - ffmpeg Error
I'm trying to get the video and first voice channel with converted AAC. Also trying to add a subtitle.
The command I've used is:
ffmpeg -i yourmkv.mkv -i yoursubtitles.srt -map 0:v -map 0:a -map 1:s -...
- 623
0
votes
0
answers
880
views
Set default subtitle language based on language code (eng, spa, etc.), not the stream specifier
I batch downloaded videos from a channel, but the subtitle languages available for each video are not consistent. Is there a way to set a default subtitle using the language code (e.g. eng, spa, fra, ...
- 1
0
votes
0
answers
521
views
ffmpeg/ffprobe won't detect the language of a WEBvtt (subtitles) file
A WEBvtt subtitle file starts with a few header lines, and one of them indicates the language:
WEBVTT
Kind: captions
Language: en
00:00:09.977 --> 00:00:11.563
I'd like you to take
a look at this ...
- 1,629
1
vote
1
answer
8k
views
How can I extract a subtitle in "HDMV PGS" format from a video with FFmpeg?
I'm trying to extract a subtitle in "HDMV PGS" format embedded in a video with this command ffmpeg -i Movie.mkv -map 0:s:0 subs.srt from an answer on Super User command, but it gives the ...
- 11
2
votes
0
answers
75
views
Huge video duration after PGS subtitles burn onto video
i'm trying to burn subtitles onto video stream and something weird happens.
This is my video file before the process:
ffprobe version N-107936-gf99d15cca0-20220829 Copyright (c) 2007-2022 the FFmpeg ...
- 21
1
vote
1
answer
3k
views
How to add metadata to subtitle?
I'm trying to add language metadata to existing external .ass subtitles, but it doesn't seem to work. I'm using ffmpeg -i input.ass -map 0 "-metadata:s:s:0" "language=eng" "-...
- 11
2
votes
2
answers
2k
views
How to make youtube-dl (yt-dlp) generate subtitles properly and not duplicate the text?
I'm using yt-dlp to download some videos, and I've told it to embed the subtitles. This seems to work, except it's generating subtitles in the most horrible way by duplicating the text.
For example, ...
- 21
0
votes
0
answers
3k
views
How can I force a subtitle track to be set as active on an MP4 video?
I'm converting .mkv's to mp4 and it's working, however the issue is that when I open the .mp4, the subtitle track is disabled by default.
I have to manually select it as such:
How can I make it so ...
- 1
2
votes
2
answers
3k
views
ffprobe OCR of a subtitle stream
I have some video files containing HDMV PGS subtitles, and I need to convert them to subrip (or other text subtitles). I know that I can ffmpeg demux the video file to extract .sup and on the fly ...
- 143
0
votes
0
answers
214
views
FFMPEG: boost video volume but preserve subtitles
Using as input video files that contain subtitle streams, currently I use this command to boost volume while copying video:
ffmpeg -i input_file -vcodec copy -af "volume=10.0dB" ...
- 1
0
votes
1
answer
2k
views
FFMpeg Softsub ass to mp4 using custom font
Requirement
I'm trying to add an ass subtitle file to a mp4 video. I want the text to use system/custom fonts and have a certain position.
My test
This is an example of my ass file:
[Script Info]
...
- 223
-1
votes
2
answers
5k
views
How to convert audio/video file to SRT?
I want to convert audio/video file to SRT. I've tried these commands:
ffmpeg -i sample.mp4 sample.srt
ffmpeg -threads 4 -i sample.mp4 -vn -an -codec:s:0.2 srt sample.srt
But then I learned that it ...
- 369
0
votes
2
answers
2k
views
How to convert text-based subtitles to image-based subtitles?
I want to convert an ass type subtitle track into a dvd_subtitle type track.
I know I can't simply ask ffmpeg to convert it with -c:s dvd_subtitle, but there must be another simple way, since video ...
- 115
1
vote
0
answers
274
views
How to hard code / embed subtitles of videos inside a folder with FFMPEG
Lets say I have folder A with lots of videos that have TX3G subtitles
Some videos don't have any subtitles
So I need a windows command to process all videos inside this folder and embed / hard code ...
- 783
3
votes
1
answer
4k
views
Extracting QuickTime mov_text subtitles with ffmpeg
I have a .mov file that has mov_text-formatted subtitle tracks that were created using the old (now deprecated) QuickTime 7 Pro's "Text Track" feature. This is what ffmpeg -i myfile.mov ...
- 201
3
votes
1
answer
3k
views
Extracting DVB_subtitles with ffmpeg fails with empty file / nothing encoded
These are the streams contained:
Stream #0:0[0x247]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #...
- 31
0
votes
1
answer
1k
views
ffmpeg adding subtitles with options
Hi I'm having trouble adding options to subtitles: I can only add 1 attribute.
ffmpeg -i "video.mp4" -vf 'subtitles=subtitles.srt:force_style=Fontname=Z003,PrimaryColour=&HCCFF0000' -y &...
2
votes
1
answer
1k
views
Use ffmpeg to convert .mkv to .mp4 while retaining hard-embedded subs
I'm trying to convert an mkv video into mp4 while keeping the hard-embedded subs. Extra information is below - does anyone know which command I should use to make this work?
So far I've tried these ...
- 21
3
votes
1
answer
2k
views
how to embed RTL subtitles in a video (hebrew, arabic, ...) with the correct language directionality?
I try to hard-code subtitles in a video, by re-encoding the video with the subtitles as graphics (and NOT as an additional stream).
The subtitles are in Hebrew / Arabic.
(All texts are UTF-8 encoded. ...
- 1,533
0
votes
1
answer
2k
views
ffmpeg: mkv to mp4 with subtitles hardcoded
I don't understand something. I'm trying this:
ffmpeg -i input.mkv -map 0:0 -map 0:2 -map 0:3 -vf subtitles=input.mkv output.mp4
But I have this error:
Automatic encoder selection failed for output ...
0
votes
1
answer
416
views
ffmpeg subtitles filter input pad error
What am I doing wrong? I'm trying to make this work for a couple of hours now. I know it has something to do with the subtitles filter but couldn't figure it out.
If I run a sample command, such as ...
- 123
2
votes
0
answers
640
views
Subtitles misaligned/missing when cutting video using ffmpeg
TL;DR: After cutting a video with ffmpeg, subtitles are invisible in VLC player even though there is a subtitle stream.
I have an MP4 file of a TV recording of a movie and I want to cut off the parts ...
- 141
1
vote
1
answer
1k
views
FFmpeg: Issues muxing/copying ASS subtitle streams from one MKV source with another MKV, causes 33secs of missing subtitle at the beginning
Hey first time posting,
But I really tried to look all around for a solution, even tried a couple of options that worked for me before for a similar issue with WebVTT from another solution [here].
...
- 11
2
votes
1
answer
5k
views
How do I copy a specific subtitle track, by language, with FFmpeg?
I have a video file with 30+ subtitles from which I want to save only the English subtitle track.
Input #0, matroska,webm, from 'Galaxy.mkv':
Metadata:
title : Galaxy.720p.WEBRip.x264-...
- 333
4
votes
0
answers
759
views
Change the speed of subtitles in an srt file
I have a set of videos that were recorded at 25 fps. That was the original speed of the video and I want to keep it that way. The video and audio work fine.
I have a corresponding set of subtitle ...
- 141
0
votes
0
answers
630
views
ffmpeg: adding subtitles (.srt) to MKV only adds first subtitle frame
I am trying to add a separate .srt file to an existing MKV container using ffmpeg:
> ffmpeg -i 'input.mkv' -fix_sub_duration -i 'subtitles.srt' -map 0 -c copy -map 1 -c:s:1 srt 'output.mkv'
I am ...
0
votes
1
answer
612
views
How can I fix Error: "No usable fontconfig configuration file found, using fallback." in a WIN10 when I try hardsub a SRT in a MP4?
I trying to burn a subtitle on video but no way to get this.
Already create a bin fonts\fonts.conf in everywhere but seems not working right.
But the same code works on another computer.
Someone can ...
1
vote
1
answer
10k
views
Why is FFmpeg suddenly throwing “Segmentation fault: 11” errors and creating output files with only “ftypisomisomiso2avc1mp4freemdat” as content?
I am running FFmpeg version 4.3.1 — as installed via Homebrew — on macOS Catalina (10.15.7). And this morning I was running a standard FFmpeg command to I use merge MP4 and SRT subtitles:
ffmpeg -y -i ...
- 56k
5
votes
1
answer
2k
views
resize/change aspect ratio of PGS subtitles with ffmpeg
i have some blu-ray rips that i have re-encoded. they were letterboxed and so now have resolutions of 1920x816, 1920x804, etc. and this has caused some issues with the subtitles.
in some video players ...
- 51
1
vote
2
answers
873
views
I would like to re-pack MKV files while keeping ALL subtitles
I have been using MakeMKV to rip DVDs to my hard drive. This program works OK, but produces very inefficient files. Resulting video files from Blu-Rays are typically 35GB or more. I would like to use ...
- 21
4
votes
3
answers
8k
views
How can ffmpeg extract dvd_subtitles to separate file?
How can I extract dvd_subtitles from an .mkv file using ffmpeg into a separate file like a .sub or .idx? Or both?
Thank you for your help/advice.
