Questions tagged [metadata]

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Capture original timecode with ffmpeg from decklink

I am trying to capture tape content via a BlackMagic Decklink Quad 2, using ffmpeg. I believe the timecode is passed on through the Decklink because when capturing manually with MediaExpres the ...
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12 views

How can I export metadata from Premiere Pro

After I log my metadata (including the description and bin allocation) in Premiere Pro, I would like to export this to a table format (Excel or CSV). Is there a possibility to do this directly or via ...
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1answer
133 views

Removing Metadata Title in mp4 files

I was able to remove metadata titles in mkv files through mkvtoolnix with this code @echo off for /r %%g in (*.mkv) do ("D:\Programs\MKVToolsNix\mkvpropedit" "%%~g" --tags all:"" --delete title ) I ...
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25 views

Saving metadata per frame. What format to use?

I am building some software that does analysis of video. Each frame has metadata associated with it. We save the video so we can play it back later. We would like to be able to play it back with that ...
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1answer
55 views

How to make ffmpeg to generate NUMBER_OF_BYTES tag for every stream in file output?

Can ffmpeg count size of stream in bytes? I want to write NUMBER_OF_BYTES tag for every stream in file output on the fly. Like MKVToolNix does. Input #0, matroska,webm, from 'm:\S01E18.mkv': ...
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11 views

Generating metadata for transcoded video

I'm a software developer who's relatively new to video. Currently my company delivers transcoded video and XML metadata to our partners. We need to rebuild our system. I'm assuming that there must be ...
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1answer
157 views

Do I really need to keep CPI file from AVCHD container?

CPI files accompany MTS files in AVCHD containers created by camcorders. Various posts on video forums suggest that CPI files should be archived together with MTS files, as they contain metadata ...
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69 views

FFMpeg set language as Unknown or unspecified in a QuickTime MOV

I have to transcode with FFMpeg some video with multiple audio where various audio track are not language related, just music and so on. I would like to assing as language something like Unspecified, ...
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1answer
30 views

Software for marking AND describing places in video

When editing sport videos one of the most tedious and time consuming parts is actually watching the footage and describing where, what and what is quality of the part of the video. For now I haven't ...
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3answers
4k views

How to prevent ffmpeg from dropping metadata?

When I am simply copying a.MOV (from my iPhone) to c.MOV, ffmpeg drops a lot of metadata, (including the time and location of the video). I tried -metadata, but ffmpeg still drops the information (...
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2answers
431 views

Mi Sphere 360, where is stored the gyro data?

I bought a Xiaomi Mijia MI SPHERE 360 Camera, it has an embedded gyroscope. The iOS app allows exporting stabilized movies combining the video and gyro data. The camera records .mp4 files of the ...
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35 views

Stripping metadata sometimes doubles video, the second one without sound

I use this command for stripping metadata: ffmpeg -i input.mp4 -map_metadata -1 -c copy output.mp4 Sometimes it works fine but occasionally the result is as +----------------+----------------+ | ...
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2answers
3k views

How do I find out about the shutter speed of frames in a video?

I shot a video at 24FPS, and I want to find out what the shutter speed of each frame was. Quicktime Player and VLC's Info panels don't give me this information. Neither does exiftool. Here's exiftool'...
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777 views

H264 Remove Encoding Settings - Error FFMPEG

" Removing MP4 encoding information " I have tried the formula of interpretation but I have compared it with such an error. " Unknown bitstream filter h264_changesps " What am I supposed to do?
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1answer
124 views

How to extract and modify data rate and time scale from OpenDML (AVI) file

I'm working on a Python script to bulk transcode video files. These files will have different framerates, and one of the goals is to get them all to the same framerate, by making some intelligent ...
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0answers
248 views

Importing marker data into premiere

Premiere has an option to export markers in .csv format but I cannot find an option to import .csv marker data. How do you do this?
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1answer
729 views

Error decoding timecode using ffprobe

I'm using ffprobe to get timecode from an mxf which has DF timecode but with a non DF frame rate. I'm getting the error Drop frame is only allowed with 30000/1001 or 60000/1001 FPS. I'm running ...
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1answer
2k views

How to cutting a video and keep all format and metadata

I want to cut long videos into several smaller parts without changing any format and metadata from the original video. I used these commands ffmpeg -i input -ss 00:00:05 -t 100 -c:a copy -c:v copy ...
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1answer
1k views

Video metadata: What is “Video delay” used for?

Recently, I'm forced to fiddle with a nasty little problem with videos that have some special metadata attributes, namely "delay" or "delay_relative_to_video". There's a software videoconferencing ...
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2answers
2k views

Why does AAC have two Sampling rates?

I am working on a project that reads the meta data of video files with MediaInfo and processes the results. While testing my code with some sample files I noticed that the audio track of a .mkv file ...
11
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1answer
9k views

ffmpeg: explicitly tag h.264 as bt.601, rather than leaving unspecified?

I want to tag video as explicitly bt.601, rather than "unspecified". I know players typically choose bt.601 as the default for videos less than 1280 pixels wide, but I want to make it explicit that ...