Questions tagged [ffprobe]
ffprobe is the file analyzer of ffmpeg. Post at least the command used and the result of your command. Explain what was expected.
79
questions
11
votes
1
answer
3k
views
What's the difference between coded width and width in FFprobe
Pretty much the title, what's the difference between coded width (or coded height) and width (or height) in FFprobe, why are they sometimes different and which is the right one?
width=1920
height=...
- 305
10
votes
2
answers
8k
views
How to determine video stream size
I want to determine stream size(not the video size) and using the following ffprobe command to make this work
ffprobe -v error -count_packets -select_streams a:0 -show_entries stream=size ...
- 417
8
votes
1
answer
10k
views
How do I check if a h264 video contains b-frames?
I'm using ffprobe right now but I don't if it supports showing whether the video contains b-frames and what could be the syntax. Can I do this with ffprobe and so, how, or is there any other free ...
- 369
6
votes
1
answer
16k
views
ffprobe show_entries with an entry name that uses a semicolon
I'm probing a video file to get some basic information. For example, the following uses the show_entries flag to specify the necessary data.
> ffprobe -v error -show_entries format=size,duration:...
- 163
6
votes
2
answers
27k
views
ffmpeg : Extract metadata
I would like to extract meta data from a MP3 file. This is going into a script, and I therefore want to do it from the command line. Since I have already installed ffmpeg, I thought I could use it for ...
- 671
4
votes
2
answers
4k
views
ffprobe returns codec_type=video for images and text files
I have a directory with many files of different types and want to find out the codec of each video file. This works well with this command:
$ ffprobe -v error -select_streams v -show_entries stream=...
3
votes
1
answer
2k
views
FFprobe - Is it possible to get the "seeked position" of a video stream without re-encoding it?
I have the following command:
ffmpeg -f f32le -ar 44100 -channels 2 -i pipe:0 -ss 3 -i input.mp4 -y -f mp4 -map 0:a -map 1:v -c:v copy -use_editlist 0 output.mp4
When copying the video stream ...
- 79
3
votes
1
answer
5k
views
ffprobe count video and audio streams / tracks
So I have the following video example
Stream #0:0(jpn): Video: h264 (High 10), yuv420p10le(progressive), 1920x1036 [SAR 1:1 DAR 480:259], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
...
- 295
3
votes
1
answer
3k
views
Why does ffprobe report an incorrect number of frames?
I have a small video file which ffprobe describes as:-
Input #0, avi, from 'sample.avi':
Metadata:
encoder : Lavf55.12.100
Duration: 00:00:35.00, start: 0.000000, bitrate: 546 kb/s
Stream #0:0: ...
- 51
3
votes
0
answers
921
views
Why is the first frame timestamp 0.066667 and not 0?
I have a stream of TGA files created on disk and I programmaticaly build a h264 video using the x264vfw codec. Options CRT 23, medium preset, Fast Decode, keyint 30 (video is 60 fps), no cut scenes, ...
- 43
2
votes
2
answers
2k
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 ...
- 146
2
votes
1
answer
1k
views
ffmpeg - Skip file if the bitrate is lower than certain amount
I use ffmpeg to encode some videos I downloaded from various streaming sites to hevc. In windows I use a batch file to convert these files.
FOR /F "tokens=*" %%G IN ('dir /b *.mp4') DO ...
- 35
2
votes
2
answers
294
views
Finding an exe from any hard drive and setting it as a variable
I have a way to find an exe file from any drive without needing to play with %path%, but I need it set as a path-to-file variable, not just displayed.
for %i in (a b c d e f g h i j k l m n o p q r s ...
- 303
2
votes
1
answer
2k
views
How to get duration of webm video file when duration is not explicitly defined
I have a segment of a webm file with an incomplete header, I want to cut this segment down to 10 seconds by trimming x seconds off the front of the file, however I am unable to use the -sseof tag ...
2
votes
1
answer
338
views
Unable to extract duration info using ffprobe, commas in filenames are messing up my for loop
This here batch script creates a list of files from %folder% using %wildcards%, then creates a mirrored directory on drive c: containing a txt version of each file like every file.mkv.txt, which ...
- 303
2
votes
1
answer
13k
views
How to convert raw PCM data to a valid WAV file with ffmpeg?
I run this command: ffmpeg -f f32le -i pipe:0 -f wav pipe:1
ffmpeg version 4.1-tessus https://evermeet.cx/ffmpeg/ Copyright (c) 2000-2018 the FFmpeg developers
built with Apple LLVM version 10.0.0 (...
- 79
2
votes
1
answer
332
views
How to extract the timestamp (PTS) from the specific frame?
My input is a ts file. And I'm trying to use FFmpeg to extract the timestamp (PTS) from the specific frame index. I have tried the following command ( I have replaced the [FRAME_INDEX] with 5), but it ...
- 21
2
votes
1
answer
727
views
How to quickly determine positions in video?
How can I quickly determine positions in a video? For example, I have a video file and it looks like this.
I want to crop the video and get the part in the black box as a new video using ffmpeg. But ...
- 491
2
votes
0
answers
940
views
ffprobe reading wrong frame rate, any workarounds besides MediaInfo?
I want to check the frame rate of many videos to double it. I use ffprobe to get r_frame_rate which is evaluated to a decimal, then fed into ffmpeg as rscale -r {2*fps}, or into mkvmerge as 0:{2*fps}...
- 146
2
votes
0
answers
1k
views
Retrieving per-frame time difference from ffmpeg/ffprobe
I am attempting to reconstruct velocity information of an object from iPhone videos, and so I am interested in determining the time difference between frames. From what I understand, iPhone (HEVC ...
- 21
2
votes
0
answers
2k
views
FFMPEG split a video into multiple scenes/shot videos
I want to use FFMPEG (or ffprobe) to split a video into multiple shot videos/scenes (scene1.mp4 to sceneX.mp4, each a separate video). So whenever there is a scene change, it should cut it. What is ...
user608414
2
votes
1
answer
3k
views
How to frame accurately cut a video with ffmpeg?
I have a video. Here is it's ffprobe output:
> ffprobe 7347-00009\ kliksa.mp4
ffprobe version 2.6.1 Copyright (c) 2007-2015 the FFmpeg developers
built with Apple LLVM version 6.1.0 (clang-602.0....
- 121
1
vote
1
answer
2k
views
Interpreting the output of ffprobe for a WAV stream
tl;dr: What does ([1][0][0][0] / 0x0001) mean?
ffprobe test.wav produces:
ffprobe version 3.3.3 Copyright (c) 2007-2017 the FFmpeg developers
built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
...
- 245
1
vote
1
answer
2k
views
FFMPEG extracting unreasonable number of I-frames
ffmpeg version git-2014-01-14-abcde
ffprobe -show_frames a.mp4 | grep pict_type=I | wc identifies 142 I-frames.
ffmpeg -i a.mp4 -filter:v select='eq(pict_type\,I)' I.%03d.png generates thousands of ...
- 41
1
vote
1
answer
440
views
How to query media file metadata using ffprobe, e.g., track number?
I want a single command to retrieve track number (or other metadata) from an audio file using ffprobe.
- 129
1
vote
1
answer
545
views
Why different frame count on ffprobe?
Question
I use ffmpeg. Why are the frame counts different between A_COMAND and B_COMAND?
sample_gif
A_COMAND:
$ ffmpeg -i ./for_sample.gif -vf mpdecimate,setpts=N/FRAME_RATE/TB ./tmp/%1d.png
can ...
- 11
1
vote
1
answer
209
views
Using ffprobe to get count of audio streams in mp4 file
I am looking for a way to get a count of the number of audio streams in mp4 files. Among some big long threads (mostly pre-2019 dated) on using ffprobe for this I found the following command:
ffprobe ...
1
vote
1
answer
767
views
FFMPEG - ffprobe stuck after reaching h264 step on window server
I am using Xabe/ffmpeg in c# to forward a stream from a camera ip to an api clients.
On local: everything works fine.
On the api server (where the conversion is done), targeting the same camera: I ...
- 23
1
vote
1
answer
494
views
Escape % for ffprobe in batch (-read_intervals)
Maybe it will be a ridiculous question...
I've been looking around for 3 hours how to get the batch to run the ffprobe command without randomly expanding % inside the -read_intervals command.
Batch:
...
- 31
1
vote
1
answer
8k
views
Where should I put FFMPEG? [closed]
I have installed ffmpeg and ffprobe, but they just appeared in my downloads folder. I should put them somewhere useful.
I am using macOS Sierra
What is the recommended place to put such downloads? I ...
- 111
1
vote
0
answers
43
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 ...
- 1,785
1
vote
0
answers
28
views
Determine format of uncompressed ZIP file with ffprobe
I am working on a project where I need to handle ZIP archives that contain media files. Specifically, I have two files, video1.hevc and video2.mp4. For testing purposes, I created two ZIP archives ...
- 23
1
vote
0
answers
89
views
ffplay cannot play aac and mp4a (which is aac audio in an mp4 file) and ffprobe segfaults when given a file with aac audio [closed]
When I try to play a file with aac audio in ffplay, I get the following error: https://drive.google.com/file/d/1M1oCITTuaLMsLo0bs6lGbw9mZTzdwwBB/view?usp=sharing
Also, when I do ffprobe sample-1.aac, ...
1
vote
0
answers
1k
views
Why does ffprobe print N/A for stream=duration?
I have a webm video file with two streams (video and audio):
$ ffprobe -i input.webm -show_streams -v quiet
[STREAM]
index=0
codec_name=vp8
codec_long_name=On2 VP8
profile=0
codec_type=video
...
- 603
1
vote
0
answers
240
views
Why the discrepancies between ffprobe and mediainfo.DLL? [closed]
I wrote some logic to compare information from ffprobe vs. MediaInfo.DLL. Observations and questions:
A) Most of the differences were small variations in the lesser significant digits of various ...
- 136
1
vote
0
answers
736
views
`ffprobe` is 12 times slower than `metaflac`. How to speed up `ffprobe`?
On a small FLAC folder of 1593 files, ffprobe takes over 12 times longer to run than metaflac. How to speed up the single-threaded performance of ffprobe?
I tried to tell ffprobe to do the same and ...
- 11
1
vote
1
answer
2k
views
ffmpeg | How can I get the keyframes of a video sorted by time and position and save them to a text file?
I'm new to this and I don't really understand a lot of things yet.
The following command tells me which line the video keyframe is on:
ffprobe -select_streams v -show_frames -show_entries frame=...
- 11
1
vote
0
answers
1k
views
ffmpeg - make video skippable/seekable
I have downloaded a few lectures from my uni website but they look like they can not be seeked/skipped properly either by clicking on a specific timestamp on my video player or by skipping forward by ...
1
vote
1
answer
982
views
How to use video filters (cropdetect) with ffprobe
Checking the ffprobe docs apparently there is an option to use cropdetect with it. I am already aware that I could do this with ffmpeg like:
ffmpeg -ss 900 -i "foo.mkv" -vframes 100 -vf ...
- 369
1
vote
1
answer
1k
views
ffprobe missing title tag with mp4 files
I have an mp4 file with a video stream and an audio stream. The audio stream has a title that is shown both by VLC and by Mediainfo.
If I open this file (or any other mp4 file with audio track titles) ...
- 11
1
vote
1
answer
2k
views
Getting video information for a list of files output as a csv or text file
I am looking for a tool or method where I can cycle through a list of files/links and output some information or metadata in text format like this:
Name Resolution FPS Video ...
- 111
1
vote
1
answer
435
views
Offset ffprobe when outputting frame data
I've successfully managed to extract OCR data from frames using ffprobe with the following command:
ffprobe -loglevel quiet -hide_banner -select_streams v:0 -show_entries frame_tags=lavfi.ocr.text -f ...
- 11
1
vote
0
answers
1k
views
FFPROBE returns that all I-Frames are IDR frames (KEYFRAME=1) in a TS file
Running
ffprobe -v quiet -print_format json -show_format -show_frames -show_streams -unit -select_streams v "D:\CH621.ts" > "D:\CH621.ts.json" -skip_frame nointra
Result shows that all 6 I-FRAMES ...
- 11
0
votes
1
answer
1k
views
FFProbe output timebase only
When running ffprobe, it displays a lot more data than I need. I've already included the -hide_banner flag and its helped clean it up, but more specifically I only need the tbn
Is there a way to limit ...
0
votes
1
answer
1k
views
How to check if an mov file has video
Is there an ffprobe command I can run to see if an mov file that I have is audio-only or contains video as well? I have various mov files, some of which are audio dubs and some of which are full ...
- 259
0
votes
2
answers
399
views
How to get SHA1 of first 4096 bytes of an mp4 file or stream?
I am trying to use command line tools to match the hash value that Plex.app computes for movie files (apparently, it's an SHA1 hash of the first block (4k) of a movie instead of the entire movie).
I ...
- 415
0
votes
2
answers
2k
views
Using variables with bc: syntax error
The original problem
This may be more of a bc or bash question than an FFmpeg one, although I would also appreciate being able to prevent ffprobe from printing carriage returns after its output.
In a ...
- 12.8k
0
votes
2
answers
290
views
Trimming a H265 video using FFmpeg and getting this error: “Unable to find a suitable output format for 'output.h265' output.h265: Invalid argument”
I am using below FFmpeg command for cutting/trimming H265 video for specific time interval. But I am getting this error:
"Unable to find a suitable output format for 'output.h265' output.h265: ...
0
votes
1
answer
126
views
ffmpeg streaming UDP port is closed
I'm trying to use ffmpeg in order to transcode RTSP stream from CCTV to HLS stream so it could be accessed through a web server.
ffmpeg used to stream video from CCTV with following command
$ ffmpeg -...
0
votes
1
answer
542
views
What does start value mean in ffprobe output?
What does start value mean in the ffprobe output?
For example: Duration: 00:00:36.60, start: 0.066733, bitrate: 0 kb/s
Someone explain to me what the value mean, and how ffprobe calculated?
- 35