Search everywhere only in this topic. Advanced Search. Classic List Threaded. Matthew Mah. How is the gmtime option used for pts? I have succeeded in using the pts option with flt to display the time in seconds since the start of the video.
It can take up to three arguments.#13. ffprobe - FFmpeg
Moritz Barsnick. Re: How is the gmtime option used for pts? Yes, that may be the same time if you are capturing from a device. You didn't supply the complete, uncut output of your command. Luckily, on superuser. What I needed to see was your versions of ffmpeg and its components. The reason for your error: Your ffmpeg version does not match with the documentation you are using.
You need to compile or grab a version which was compiled from git master to have this feature. Or wait for 2. No need to stick to releases, git master is considered stable. BTW, while I didn't get your error message, the displayed timestamp in my experiment didn't seem correct. But that may be a different issue or just me. Could you please elaborate on what you mean by using the wallclock for timestamping frames? I am postprocessing an already captured file, so I am not sure whether this would apply.
Thanks, that's exactly what I needed to know. I thought that because the commit was on the master branch, and my release was from a later date, that this would be included. I think this can be solved with the pts offset argument. Search everywhere only in this topic Advanced Search How is the gmtime option used for pts?The fontfile parameter needs to be passed the full path to the font file, and if your environment is Windows it contains a colon, so the colon needs to be escaped.
Note that in the current case, you need three backslashes, as you also need an escape related to the shell Bourne-shell. If the escaping text is complex, consider using textfile instead of text parameter:.
The most minimal fonts.
For the Unix family, especially if you intend to rely on a package manager, it will probably install the right one in the right place.
Otherwise, you can probably know by reading the fontconfig manual. If you have set up fonts. Perhaps only Windows users need to write system-wide fonts.
If you really want to write, it is better to copy from official example little by little and add to the above minimal stuff:. For the relationship between font family names and file names, for example see ImageFont Module Python Pillow examples. You can use any font as long as it is a true type font. Consider using the one included with your TexLive installation.
Not limited to this, non-Windows fonts are often stored in structured directories:. This is very painful if you have to write their full path each time you use them, so you should use fontconfig. You can write it like this:. Then, if you want to use ipaexg.
However, there seems to be no ways of batch operation, so it would be troublesome if the number of font files is large. The color to be used for drawing fonts. You might think that what should we do is color calculations as bit or bit values I thought so. The color to be used for drawing box around text. Set the color to be used for drawing border around text. The color to be used for drawing a shadow behind the drawn text. Specifying alpha affects the whole text drawing eg the color of the border.
If this is not what you want, give an alpha for each color:. Bad news. Only if you use textfileyou can use the parameter reload :. At least version 3. Use the latest 4. You can use this to create something like a video that follows an ever-changing text file, such as a log of something:.
However, it is for Japanese people. For example, you may want to change the font over time. In such cases, you can use sendcmd rather than drawtext itself.
UTCyou can append a capital letter Z Writing in Python, I tried both local : time. I don't know whether the time is stored in that format, or as a simple number such as a unix timestamp.
If you write a time in another tag, such as 'comment', it's just a string and stays the way you formatted it. Using the deprecated option -timestamp as e. There is no standard for representation of date-time across all video formats. However, ISO is most commonly used as seen in your video.
So, unless you know that, there will be uncertainty as to what the actual time is. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. What is the correct format of media creation time? Ask Question. Asked 1 year, 3 months ago. Active 1 year ago. Viewed times. Active Oldest Votes. A note about the time zone: ffmpeg interprets the input as local time, then converts it to and stores it as UTC.
I discovered this while testing by encoding to mkv, then reading metadata with ffprobe. The standard says there must not be a space before the Z, so I didn't try that. Note the Z on the end, which shows that ffmpeg thinks it's a UTC time.
Gyan Gyan But if iso is acceptable, I'll change my code. MP4s save the datetime as epoch seconds internally from UTC. It's up to the consumer app to format it for display.The code below was used to generate the video countdown timers that are available in the following playlist using ffmpeg:.
Source: bytefreaks. Skip to content. Instantly share code, notes, and snippets. Code Revisions 4 Stars 1. Embed What would you like to do? Embed Embed this gist in your website. Share Copy sharable link for this gist. Learn more about clone URLs. Download ZIP. The code below was used to generate the video countdown timers that are available in the following playlist using ffmpeg: This example will create a 3 second video, with frames per second and it will print the elapsed and remaining times using a two second accuracy.
Using the fps variable we defined the number of Frames per Second for the video. The seconds variable defined the number of seconds the duration of the video should be. The mantissaDigits variable defines how many decimal digits should be shown after the dot. We used the drawtext directive twice to write to the frames.
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This comes out that the timestamp was in hh:mm:ss:mm format, but I want it in hh:mm:ss format. So how can I achieve this goal? In order to draw Timestamp: But if you're using bash -like shell and a weak quote, " If you only want to apply one or more filters to one video stream e.
The latter is reserved for applying filters on multiple streams. Sign up to join this community. The best answers are voted up and rise to the top.
Home Questions Tags Users Unanswered. How to set pts time format when using ffmpeg filter to add timestamp Ask Question. Asked 2 years, 9 months ago. Active 1 year, 3 months ago. Viewed 7k times. I want to add timestamp of current played time to a video, so I use this: ffmpeg -i video. Sreenikethan I 5 3 3 bronze badges. Wayne Chen Wayne Chen 31 2 2 silver badges 10 10 bronze badges.
Active Oldest Votes. Gyan Gyan I'm on Windows. You probably are using the bash shell. You can try skipping the slashes between H M and S. Yeah, you are right! So the ":" has not escaped. I'm wondering how to escape ":". Thanks a lot! Do In order to draw Timestamp: But in bash But if you're using bash -like shell and a weak quote, " Note that If you only want to apply one or more filters to one video stream e. Sign up or log in Sign up using Google.
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Learn more. FFmpeg drawtext pts gmtime not working Ask Question. Asked 2 years, 2 months ago. Active 2 years, 2 months ago. Viewed times. I use this command filter on ubuntu NOTE: this is fix on windows cmd. Farzad Farzad 1, 12 12 silver badges 39 39 bronze badges.
Does it work if you run the ffmpeg command manually, unscripted in a command-line interface on your Ubuntu computer? LordNeckbeard yes. Active Oldest Votes. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.
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Creating an Elapsed Timer using FFmpeg
If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. Libav is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
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Latest commit. Detecting these functions in configure can be tricky on mingw, they are conditionally available depending on posix feature defines. If configure didn't detect them, but they still are visible at compile time due to an unrelated header defining the posix feature definesproviding the local fallback versions with a prefixed name is safer.
Latest commit c Apr 10, Libav Libav is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata. Libraries libavcodec provides implementation of a wider range of codecs. Tools avconv is a command line toolbox to manipulate, convert and stream multimedia content.
Additional small tools such as aviocatismindex and qt-faststart.