All Questions
18
questions
0
votes
0
answers
146
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 ...
1
vote
0
answers
160
views
Can FFMPEG extract still images from video based on video "SMPTE timecode" hh:mm:ss:ff?
Is there any way to extract still images from video based on video "own SMPTE" timecode? (hour:minute:second:frame) as seen in the "Timecode Handler" recognized by ffmpeg.
I would ...
- 11
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
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
1
vote
2
answers
135
views
Extracting audio from mp4 has less bitrate
I'm using ffmpeg -i input.mp4 -c:a copy -vn -sn output.m4a
to extract audio from an mp4 file. However, when I open the mp4 in Spek, it shows 255kbps AAC and the extracted file is only 200kbps.
Also, ...
- 11
2
votes
1
answer
431
views
FFMPEG How to extract a variable number of audio streams?
I'm trying to make a small batch file that extracts all audio streams when dragging a video onto it.
ffmpeg.exe -i "%1" -map 0:a? -c:a copy "%1~extracted.aac"
But this seems to be overwriting the ...
- 33
7
votes
3
answers
6k
views
ffmpeg extract pictures from several selected time points
I have a videofile and like to extract a single image from (about 1500) specific timepoints.(expl. -ss 00:50, ss 00:67, ss: 01:70 ...)
Is there a way to do this? I tried out to use this command:
...
- 71
2
votes
1
answer
106
views
FFMPEG Same Commands?
Is there any difference between these two commands for extracting audio from a video?
ffmpeg -i input.mp4 -c copy -map 0:a output.wav
ffmpeg -i input.mp4 -vn -acodec copy output.wav
- 350
8
votes
2
answers
21k
views
How to extract lossless image from video with FFmpeg?
I have a 5s fps25 mp4 video and I use the following command to extract jpg images from the video
ffmpeg -i input.mp4 -r 1 -q:v 1 output_%01d.jpg
The images are extracted successfully, but jpg files ...
- 225
2
votes
1
answer
14k
views
Force ffmpeg to use 100% of CPU
I'm using ffmpeg to extract frames from video, but the process is so slow. Looking at CPU usage I see that ffmpeg use only 50% of my CPU. I've tried also to add -threads 4, but it seems it doesn't ...
- 579
6
votes
3
answers
7k
views
FFMPEG: extract audio with exact frame length of video
For a digital cinema package I need to extract the audio track (.wav, 48000 kHz, 16-bit) from QuickTime movies (in this case with Prores or Photo-JPEG codec). The catch is that the duration of the ...
- 131
0
votes
2
answers
1k
views
Getting value from file using Windows Batch scripting
Using Windows Batch scripting, I want to get the max_volume value (-2.9 in the following example) from a ffmpeg output written to a log file:
[Parsed_volumedetect_0 @ 0000000005428b20] n_samples: ...
- 3
5
votes
2
answers
7k
views
Extract video frames display time and frame number
I would like to extract each frame and its display time. The purpose will be to later compare the output between two videos (reference/original video and the transmitted video) and see what frames are ...
- 51
1
vote
1
answer
443
views
How do I extract parts of a video with a specific aspect ratio with ffmpeg or mencoder?
I've got some recordings from TV. The movies are all in 4:3 but the advertisement is in 16:9. My input format is a mpeg 2 transport stream. I would like to convert my movies to mp4 with h264 video and ...
91
votes
7
answers
183k
views
How to extract subtitle from video using ffmpeg?
I am trying to extract subtitle from video as .srt file, I used the following command:
ffmpeg -i mytestmovie.mkv -vn -an -codec:s:0.1 srt sub.srt
But, I got an error as Unrecognized option codec:s:0:...
- 921