Opened 10 years ago
Last modified 7 months ago
#4209 open defect
GPS coordinates location and other iOS metadata in MOV are not copied to output MP4
Reported by: | elmimmo | Owned by: | |
---|---|---|---|
Priority: | normal | Component: | avformat |
Version: | git-master | Keywords: | mov |
Cc: | tvolkert, Avi Alkalay, genuinefafa@gmail.com, tim.ffmpeg@vanwerkhoven.org | Blocked By: | |
Blocking: | Reproduced by developer: | yes | |
Analyzed by developer: | no |
Description
Summary of the bug:
Certain metadata in MOV files recorded with iOS devices, such as GPS location, is lost when converting to MP4.
ffmpeg does state in its log that the output file will contain such metadata, but such is not the case as identified with ffprobe and exiftool.
Some of the metadata present in the input MOV that is missing in the output MP4, according to ffprobe:
- make ("Apple")
- encoder
- location (GPS latitude/longitude/altitude coordinates)
- model (the iPhone/iPad/iPod model)
exiftool identifies some more:
- camera identifier ("Back" or "Front")
- Software Version (iOS version)
This happens irrespective of input video/audio being transcoded or just repackaged.
How to reproduce:
% ffmpeg -i INPUT.mov -map_metadata 0 -c copy OUTPUT.mp4 ffmpeg version 2.5.2 Copyright (c) 2000-2014 the FFmpeg developers built on Dec 26 2014 21:55:58 with Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn) configuration: --prefix=/usr/local/Cellar/ffmpeg/2.5.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libxvid --enable-libvo-aacenc --enable-vda libavutil 54. 15.100 / 54. 15.100 libavcodec 56. 13.100 / 56. 13.100 libavformat 56. 15.102 / 56. 15.102 libavdevice 56. 3.100 / 56. 3.100 libavfilter 5. 2.103 / 5. 2.103 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'INPUT.mov': Metadata: major_brand : qt minor_version : 0 compatible_brands: qt creation_time : 2014-12-26 20:54:22 model : iPhone 4 model-spa : iPhone 4 encoder : 7.1.1 encoder-spa : 7.1.1 date : 2014-12-26T21:54:22+0100 date-spa : 2014-12-26T21:54:22+0100 location : +41.4082+002.1852+027.119/ location-spa : +41.4082+002.1852+027.119/ make : Apple make-spa : Apple Duration: 00:00:01.07, start: 0.000000, bitrate: 11694 kb/s Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720, 11890 kb/s, 24 fps, 24 tbr, 600 tbn, 1200 tbc (default) Metadata: rotate : 90 creation_time : 2014-12-26 20:54:22 handler_name : Core Media Data Handler encoder : H.264 Side data: displaymatrix: rotation of -90.00 degrees Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 62 kb/s (default) Metadata: creation_time : 2014-12-26 20:54:22 handler_name : Core Media Data Handler Output #0, mp4, to 'OUTPUT.mp4': Metadata: major_brand : qt minor_version : 0 compatible_brands: qt creation_time : 2014-12-26 20:54:22 model : iPhone 4 model-spa : iPhone 4 make-spa : Apple encoder : Lavf56.15.102 date : 2014-12-26T21:54:22+0100 date-spa : 2014-12-26T21:54:22+0100 location : +41.4082+002.1852+027.119/ location-spa : +41.4082+002.1852+027.119/ make : Apple Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=2-31, 11890 kb/s, 24 fps, 19200 tbn, 600 tbc (default) Metadata: rotate : 90 creation_time : 2014-12-26 20:54:22 handler_name : Core Media Data Handler encoder : H.264 Side data: displaymatrix: rotation of -90.00 degrees Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, mono, 62 kb/s (default) Metadata: creation_time : 2014-12-26 20:54:22 handler_name : Core Media Data Handler Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1 -> #0:1 (copy) Press [q] to stop, [?] for help frame= 25 fps=0.0 q=-1.0 Lsize= 1522kB time=00:00:01.06 bitrate=11673.4kbits/s video:1512kB audio:8kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.123020%
Attachments (8)
Change History (35)
by , 10 years ago
Attachment: | ffprobe.INPUT.mov.log added |
---|
by , 10 years ago
comment:1 by , 10 years ago
Component: | undetermined → ffmpeg |
---|---|
Reproduced by developer: | set |
Version: | unspecified → git-master |
ffmpeg does copy over the individual jpeg metadata
when you use ffmpeg -i file.jpg -c copy new.jpg
it appears ffmpeg output is lying when it says it will copy the metadata.
looks like rotation is copied, create date is copied.
comment:2 by , 9 years ago
Any chance for this to be fixed ?
Tags that are missing on videos are Create Date, GPS-related tags, video orientation, manufacturer and model, camera used (front or back).
by , 9 years ago
Attachment: | exiftool-output.json added |
---|
Output of 'exiftool -j' on a video file recorded on an iPhone
comment:4 by , 9 years ago
Cc: | added |
---|---|
Component: | ffmpeg → avformat |
Keywords: | mov added |
Is there any indication that the location ("\251xyz") atom is supported in isom (mp4)?
Do you have a mp4 file that shows location?
comment:5 by , 9 years ago
I'll try to attach an mp4 that has location that was taken with my Nexus 6 phone (file upload just failed, but I'll try again). My old Moto X produced similar mp4s. ffprobe produces the following:
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2015-07-22 15:30:16
location : +40.7920-73.8864/
location-eng : +40.7920-73.8864/
Duration: 00:00:01.05, start: 0.000000, bitrate: 14029 kb/s
Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 11705 kb/s, SAR 1:1 DAR 16:9, 29.99 fps, 30 tbr, 90k tbn, 180k tbc (default)
Metadata:
creation_time : 2015-07-22 15:30:16
handler_name : VideoHandle
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 96 kb/s (default)
Metadata:
creation_time : 2015-07-22 15:30:16
handler_name : SoundHandle
Note that that appears to *not* be using the "\251xyz" atom, but instead the "location" and "location-eng" atoms...
I also found other code that handles the extraction of the "\251xyz" atom, in case that validates its existence... https://code.google.com/p/android-source-browsing/source/browse/media/libstagefright/MPEG4Extractor.cpp?repo=platform--frameworks--base&name=ics-mr1&r=4d7bc65538c7cd9fbb1fbbcf22d1da47fcee1219#1141
by , 9 years ago
Attachment: | has-location.mp4 added |
---|
Nexus 6 sample video with location info attached
comment:6 by , 9 years ago
Would there be any issue just passing through any metadata tags (including custom tags) found when using the -map_metadata? Then if the caller put invalid metadata tags in there and produced an unsupported mp4 file, it's their error (not the library's), and we don't have to enumerate the supported tags in code.
comment:7 by , 9 years ago
The existing comments in movenc.c indicate that some applications have issues with random tags in isom files but imo feel free to send a patch.
comment:8 by , 9 years ago
Here is a video recorded on my iPhone 5S that has geolocation embedded: http://avi.alkalay.net/clipboard/iPhone5S.m4v
I want to add more tracks to the video while cloning it and not losing the metadata:
ffmpeg -i iPhone5S.m4v -acodec copy -vcodec copy {parameters to add subtitles} iPhone5S.subtitled.m4v
Metadata would be maker and model, geo, orientation etc cited above.
comment:9 by , 9 years ago
Status: | new → open |
---|
by , 9 years ago
Attachment: | 0001-Add-xyz-atom-for-3gp-and-mp4-files-not-just-mov-file.patch added |
---|
comment:10 by , 9 years ago
comment:11 by , 9 years ago
Patches on the bug tracker are often forgotten and is not suitable for proper reviews. Patches should be sent to the ffmpeg-devel mailing list:
comment:13 by , 7 years ago
Hi,
sadly this does not meet the "other iOS metadata" part of the bug description.
I also want to stress that this does concern ALL metadata tags from other devices / operating systems as well (e.g. the "com.android.version" on android devices which should also be kept for reference)!
comment:14 by , 6 years ago
Cc: | added |
---|
I found that none of the Quicktime metadata is being copied either, losing GPS (and such) is not a good way to encode for archiving... :-/
follow-up: 16 comment:15 by , 6 years ago
Adding -movflags use_metadata_tags
will allow you to add and carry over custom metadata. ff* tools, at least, will show these tags in the output.
comment:16 by , 6 years ago
Replying to Gyan:
Adding
-movflags use_metadata_tags
will allow you to add and carry over custom metadata. ff* tools, at least, will show these tags in the output.
I just tested
%ffmpeg% -benchmark -i %input% -movflags use_metadata_tags -map_metadata 0:g -c:v libx264 -crf %video-encode% -c:a aac %output%
%ffmpeg%
points to ffmpeg static 4.0 on Windows 10
it did not copy
com.apple.quicktime.location.I : +40.6195-074.1643+005.201/ com.apple.quicktime.make : Apple com.apple.quicktime.model : iPhone 7 com.apple.quicktime.software : 12.1.1 com.apple.quicktime.creationda : 2018-11-21T16:47:56-0500
into output.
comment:17 by , 6 years ago
Works here with INPUT.mov attached above. Share full log and input file.
comment:18 by , 6 years ago
Well, I did some testing, no trouble by using ffprobe
. It does show as it should (information from source is copied to destination);
what I don't understand is why mpc-hc (media player home cinema) does show in file->properties->mediainfo with the source .mov
and not the created .mp4
. Is it possible that ffmpeg is not sticking to specifications and ffprobe either?
It might be a mpc-hc issue... :-/
comment:19 by , 6 years ago
The muxer, when adding these non-standard metadata, does so under a child mdta
box which these other apps bypass. I'll look into writing it at top-level udta
, when I can.
comment:21 by , 6 years ago
I just tested with ffmpeg version 4.0.3 with an iPhone X HEVC video.
Command was simply:
ffmpeg -i IMG_9988.MOV -movflags use_metadata_tags -c copy aaaa.mov
I can see the original metadata on target file (GPS, model etc) with ffprobe:
com.apple.quicktime.creationdate: 2018-11-28T17:47:53-0200 com.apple.quicktime.location.ISO6709: -23.5424-046.6576/ com.apple.quicktime.make: Apple com.apple.quicktime.model: iPhone X com.apple.quicktime.software: 12.1
But Apple stack doesn't show metadata on target file. Here is a screenshot showing on left the source and target on right:
I can provide sample video files if needed.
comment:22 by , 5 years ago
This seems to be the issue - when you load the input and output files using AVFoundation
(as AVAsset
) and read the metadata, here is the difference:
Input:
[...] <AVMetadataItem: 0x7fb602ef1ce0, identifier=mdta/com.apple.quicktime.location.ISO6709, keySpace=mdta, key class = __NSCFString, key=com.apple.quicktime.location.ISO6709, commonKey=location, extendedLanguageTag=(null), dataType=com.apple.metadata.datatype.UTF-8, time={INVALID}, duration={INVALID}, startDate=(null), extras={ dataType = 1; dataTypeNamespace = "com.apple.quicktime.mdta"; }, value class=__NSCFString, value=+XX.6405-YY.8118+371.450/> [...]
Output file:
[...] <AVMetadataItem: 0x7ff2d5217a50, identifier=itsk/%00%00%00%05, keySpace=itsk, key class = __NSCFNumber, key=, commonKey=(null), extendedLanguageTag=(null), dataType=com.apple.metadata.datatype.UTF-8, time={INVALID}, duration={INVALID}, startDate=(null), extras={ dataType = 1; dataTypeNamespace = "com.apple.itunes"; }, value class=__NSCFString, value=+XX.6405-YY.8118+371.450/> [...]
Key differences:
- identifier is set to
itsk/%00%00%00%05
(as it's the fifth metadata item), instead of copying the input identifiermdta/com.apple.quicktime.location.ISO6709
- namespace is set to
com.apple.itunes
instead ofcom.apple.quicktime.mdta
It is very likely that Apple requires the metadata items to be in the correct namespace, with the right identifier. I am not sure what is the exact issue as searching through FFmpeg source code, I can't find itsk
or com.apple.itunes
, so I am assuming that these get generated by AVFoundation
if the correct value cannot be read...
comment:23 by , 5 years ago
Cc: | added |
---|
Any updates on this? When inspecting the video with exiftool, in my case the hierarchy of metadata is different. Could this be it? iOS stores GPS in Movie.Meta
while FFmpeg stores this in Movie.UserData.Meta
.
Setup
ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
Exiftool version: 11.65
Original metadata
(GPS / datetime redacted)
exiftool -v <filename> Movie (SubDirectory) --> + [Movie directory] [...stuff...] | UserData (SubDirectory) --> | Unknown_free = | Meta (SubDirectory) --> | + [Meta directory] | | Handler (SubDirectory) --> | | + [BinaryData directory, 26 bytes] | | | HandlerClass = | | | HandlerType = mdta | | | HandlerVendorID = | | | HandlerDescription = | | Keys (SubDirectory) --> | | + [Keys directory] | | | Added ItemList Tag 1.1 = location.ISO6709 | | | Added ItemList Tag 1.2 = make | | | Added ItemList Tag 1.3 = model | | | Added ItemList Tag 1.4 = software | | | Added ItemList Tag 1.5 = creationdate | | ItemList (SubDirectory) --> | | + [ItemList directory] | | | GPSCoordinates = +12.3456+001.2345+001.234/ | | | Make = Apple | | | Model = iPhone 6s | | | Software = 13.1.3 | | | CreationDate = 2019-11-02T01:23:45+0000 | | Free = | Unknown_free = trex....... trex.... trex...v. trex...v.
Modified metadata
ffmpeg -i IMG_5585-orig.MOV -c:v libx264 -movflags use_metadata_tags -c:a libfdk_aac IMG_5585-orig.MOV-x264_aac.mp4
(GPS / datetime redacted)
exiftool -v <filename> Movie (SubDirectory) --> + [Movie directory] [...stuff...] | UserData (SubDirectory) --> | + [UserData directory] | | Meta (SubDirectory) --> | | + [Meta directory] | | | Handler (SubDirectory) --> | | | + [BinaryData directory, 25 bytes] | | | | HandlerClass = | | | | HandlerType = mdta | | | | HandlerVendorID = | | | | HandlerDescription = | | | Keys (SubDirectory) --> | | | + [Keys directory] | | | | Added ItemList Tag 1.1 = major_brand (Unknown) | | | | Added ItemList Tag 1.2 = minor_version (Unknown) | | | | Added ItemList Tag 1.3 = compatible_brands (Unknown) | | | | Added ItemList Tag 1.4 = creationdate | | | | Added ItemList Tag 1.5 = location.ISO6709 | | | | Added ItemList Tag 1.6 = make | | | | Added ItemList Tag 1.7 = model | | | | Added ItemList Tag 1.8 = software | | | | Added ItemList Tag 1.9 = encoder (Unknown) | | | ItemList (SubDirectory) --> | | | + [ItemList directory] | | | | MajorBrand = qt | | | | MinorVersion = 0 | | | | CompatibleBrands = qt | | | | CreationDate = 2019-11-02T01:23:45+0000 | | | | GPSCoordinates = +12.3456+001.2345+001.234/ | | | | Make = Apple | | | | Model = iPhone 6s | | | | Software = 13.1.3 | | | | Encoder = Lavf58.29.100
comment:24 by , 5 years ago
This issue is similar to https://trac.ffmpeg.org/ticket/6193, which also lists a manual work-around using mp4extract
from https://www.bento4.com
comment:25 by , 20 months ago
I faced the same issue as some users reported here: iOS doesn't show the location if media files were created by FFmpeg. After some analysis independently of TimvW1984, I've found where FFmpeg and iOS put their metadata tags:
FFmpeg: moov/udta/meta
iOS: moov/meta
so FFmpeg uses the improper location of the meta
tag as already suggested by TimvW1984.
Furthermore, Apple's QuickTime specification [1] defines the correct location for the metadata tag:
Within a QuickTime file, metadata can be stored within a movie atom (‘moov’), a track atom (‘trak’) or a media atom (‘mdia’). Only one metadata atom is allowed for each location.
The current FFmpeg doesn't follow this specification and writes meta
inside the udta
atom[2].
From this, I can conclude: that is the cause why location metadata is not recognized by Apple's software.
[1]: https://developer.apple.com/library/archive/documentation/QuickTime/QTFF/Metadata/Metadata.html
[2]: https://git.ffmpeg.org/gitweb/ffmpeg.git/blob/refs/heads/release/5.0:/libavformat/movenc.c#l4054
comment:26 by , 7 months ago
ffmpeg does not correctly preserve Keys
tags in movie metadata.
The problem is that the Keys
tags are embedded in UserData
atom which Apple's apps do not display.
https://exiftool.org/forum/index.php?topic=15418.msg82847#msg82847
ffmpeg6 -i input.mp4 -c copy -movflags use_metadata_tags -map_metadata 0 output.mp4 ffmpeg version 6.1.1 Copyright (c) 2000-2023 the FFmpeg developers built with Apple clang version 15.0.0 (clang-1500.1.0.2.5) configuration: --cc=/usr/bin/clang --datadir=/opt/local/libexec/ffmpeg6/share/data --docdir=/opt/local/libexec/ffmpeg6/share/doc --progs-suffix=6 --prefix=/opt/local/libexec/ffmpeg6 --enable-audiotoolbox --disable-indev=jack --disable-libjack --disable-libopencore-amrnb --disable-libopencore-amrwb --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --disable-metal --disable-outdev=xv --enable-opencl --enable-sdl2 --disable-securetransport --enable-videotoolbox --disable-xlib --enable-avfilter --enable-fontconfig --enable-gnutls --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libfribidi --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libzimg --enable-libzvbi --enable-lzma --enable-shared --enable-pthreads --enable-swscale --enable-zlib --enable-libaom --enable-libsvtav1 --arch=x86_64 --enable-x86asm --enable-gpl --enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxvid --enable-postproc libavutil 58. 29.100 / 58. 29.100 libavcodec 60. 31.102 / 60. 31.102 libavformat 60. 16.100 / 60. 16.100 libavdevice 60. 3.100 / 60. 3.100 libavfilter 9. 12.100 / 9. 12.100 libswscale 7. 5.100 / 7. 5.100 libswresample 4. 12.100 / 4. 12.100 libpostproc 57. 3.100 / 57. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4': Metadata: major_brand : mp42 minor_version : 1 compatible_brands: isommp41mp42 creation_time : 2005-05-05T09:05:05.000000Z com.apple.quicktime.author: Author com.apple.quicktime.creationdate: 2005-05-05T12:05:05+0300 com.apple.quicktime.description: Description com.apple.quicktime.displayname: DisplayName com.apple.quicktime.encoder: Final Cut Pro 10.7 com.apple.quicktime.keywords: Keywords 1,Keywords 2 com.apple.quicktime.location.ISO6709: -36.6101-066.91515+119.900/ com.apple.quicktime.location.name: LocationName com.apple.quicktime.rating.user: 3 com.apple.quicktime.title: Title Duration: 00:00:04.00, start: 0.000000, bitrate: 2594 kb/s Stream #0:0[0x1](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 133 kb/s (default) Metadata: handler_name : Core Media Audio vendor_id : [0][0][0][0] Stream #0:1[0x2](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 2452 kb/s, 25 fps, 25 tbr, 25k tbn (default) Metadata: handler_name : Core Media Video vendor_id : [0][0][0][0] Output #0, mp4, to 'output.mp4': Metadata: major_brand : mp42 minor_version : 1 compatible_brands: isommp41mp42 creation_time : 2005-05-05T09:05:05.000000Z com.apple.quicktime.author: Author com.apple.quicktime.creationdate: 2005-05-05T12:05:05+0300 com.apple.quicktime.description: Description com.apple.quicktime.displayname: DisplayName com.apple.quicktime.encoder: Final Cut Pro 10.7 com.apple.quicktime.keywords: Keywords 1,Keywords 2 com.apple.quicktime.location.ISO6709: -36.6101-066.91515+119.900/ com.apple.quicktime.location.name: LocationName com.apple.quicktime.rating.user: 3 com.apple.quicktime.title: Title encoder : Lavf60.16.100 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 2452 kb/s, 25 fps, 25 tbr, 25k tbn (default) Metadata: handler_name : Core Media Video vendor_id : [0][0][0][0] Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 133 kb/s (default) Metadata: handler_name : Core Media Audio vendor_id : [0][0][0][0] Stream mapping: Stream #0:1 -> #0:0 (copy) Stream #0:0 -> #0:1 (copy) Press [q] to stop, [?] for help [out#0/mp4 @ 0x7faf4dc16900] video:1197kB audio:66kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.366865% size= 1268kB time=00:00:03.98 bitrate=2604.6kbits/s speed= 914x
output.mp4 has Keys
tags embedded in UserData
atom which Apple's apps do not display. exiftool -G5 switch reveals that difference (with -G1 the output seems identical):
exiftool -a -G5 -s -n -Keys:All . ======== ./input.mp4 [MOV-Movie-Meta-Keys] Author : Author [MOV-Movie-Meta-Keys] CreationDate : 2005:05:05 12:05:05+03:00 [MOV-Movie-Meta-Keys] Description : Description [MOV-Movie-Meta-Keys] DisplayName : DisplayName [MOV-Movie-Meta-Keys] Encoder : Final Cut Pro 10.7 [MOV-Movie-Meta-Keys] Keywords : Keywords 1,Keywords 2 [MOV-Movie-Meta-Keys] GPSCoordinates : -36.6101 -66.91515 119.9 [MOV-Movie-Meta-Keys] LocationName : LocationName [MOV-Movie-Meta-Keys] UserRating : 3 [MOV-Movie-Meta-Keys] Title : Title ======== ./output.mp4 [MOV-Movie-UserData-Meta-Keys] MajorBrand : mp42 [MOV-Movie-UserData-Meta-Keys] MinorVersion : 1 [MOV-Movie-UserData-Meta-Keys] CompatibleBrands : isommp41mp42 [MOV-Movie-UserData-Meta-Keys] CreationTime : 2005:05:05 09:05:05.000000Z [MOV-Movie-UserData-Meta-Keys] Author : Author [MOV-Movie-UserData-Meta-Keys] CreationDate : 2005:05:05 12:05:05+03:00 [MOV-Movie-UserData-Meta-Keys] Description : Description [MOV-Movie-UserData-Meta-Keys] DisplayName : DisplayName [MOV-Movie-UserData-Meta-Keys] Encoder : Final Cut Pro 10.7 [MOV-Movie-UserData-Meta-Keys] Keywords : Keywords 1,Keywords 2 [MOV-Movie-UserData-Meta-Keys] GPSCoordinates : -36.6101 -66.91515 119.9 [MOV-Movie-UserData-Meta-Keys] LocationName : LocationName [MOV-Movie-UserData-Meta-Keys] UserRating : 3 [MOV-Movie-UserData-Meta-Keys] Title : Title [MOV-Movie-UserData-Meta-Keys] Encoder : Lavf60.16.100
That can be fixed by rebuilding Keys
tags with exiftool:
exiftool -m -overwrite_original -api LargeFileSupport=1 -Keys:All= -tagsFromFile @ -Keys:All output.mp4 1 image files updated exiftool -a -G5 -s -n -Keys:All . ======== ./input.mp4 [MOV-Movie-Meta-Keys] Author : Author [MOV-Movie-Meta-Keys] CreationDate : 2005:05:05 12:05:05+03:00 [MOV-Movie-Meta-Keys] Description : Description [MOV-Movie-Meta-Keys] DisplayName : DisplayName [MOV-Movie-Meta-Keys] Encoder : Final Cut Pro 10.7 [MOV-Movie-Meta-Keys] Keywords : Keywords 1,Keywords 2 [MOV-Movie-Meta-Keys] GPSCoordinates : -36.6101 -66.91515 119.9 [MOV-Movie-Meta-Keys] LocationName : LocationName [MOV-Movie-Meta-Keys] UserRating : 3 [MOV-Movie-Meta-Keys] Title : Title ======== ./output.mp4 [MOV-Movie-Meta-Keys] Author : Author [MOV-Movie-Meta-Keys] CompatibleBrands : isommp41mp42 [MOV-Movie-Meta-Keys] CreationTime : 2005:05:05 09:05:05.000000Z [MOV-Movie-Meta-Keys] CreationDate : 2005:05:05 12:05:05+03:00 [MOV-Movie-Meta-Keys] Description : Description [MOV-Movie-Meta-Keys] DisplayName : DisplayName [MOV-Movie-Meta-Keys] Encoder : Lavf60.16.100 [MOV-Movie-Meta-Keys] Keywords : Keywords 1,Keywords 2 [MOV-Movie-Meta-Keys] GPSCoordinates : -36.6101 -66.91515 119.9 [MOV-Movie-Meta-Keys] LocationName : LocationName [MOV-Movie-Meta-Keys] MajorBrand : mp42 [MOV-Movie-Meta-Keys] MinorVersion : 1 [MOV-Movie-Meta-Keys] UserRating : 3 [MOV-Movie-Meta-Keys] Title : Title
After that Apple's apps can read Keys
tags also in the ouput.mp4
comment:27 by , 7 months ago
In fact, ffmpeg copies Keys
, UserData
and ItemList
tags to the same Keys
tags embedded in UserData
atom tags that Apple's apps do not display.
For example, ffmpeg copies Keys
, UserData
and ItemList
GPS coordinate tags about the same way:
ffmpeg6 -i input.mp4 -c copy -movflags use_metadata_tags -map_metadata 0 output.mp4 ffmpeg version 6.1.1 Copyright (c) 2000-2023 the FFmpeg developers built with Apple clang version 15.0.0 (clang-1500.1.0.2.5) configuration: --cc=/usr/bin/clang --datadir=/opt/local/libexec/ffmpeg6/share/data --docdir=/opt/local/libexec/ffmpeg6/share/doc --progs-suffix=6 --prefix=/opt/local/libexec/ffmpeg6 --enable-audiotoolbox --disable-indev=jack --disable-libjack --disable-libopencore-amrnb --disable-libopencore-amrwb --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --disable-metal --disable-outdev=xv --enable-opencl --enable-sdl2 --disable-securetransport --enable-videotoolbox --disable-xlib --enable-avfilter --enable-fontconfig --enable-gnutls --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libfribidi --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libzimg --enable-libzvbi --enable-lzma --enable-shared --enable-pthreads --enable-swscale --enable-zlib --enable-libaom --enable-libsvtav1 --arch=x86_64 --enable-x86asm --enable-gpl --enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxvid --enable-postproc libavutil 58. 29.100 / 58. 29.100 libavcodec 60. 31.102 / 60. 31.102 libavformat 60. 16.100 / 60. 16.100 libavdevice 60. 3.100 / 60. 3.100 libavfilter 9. 12.100 / 9. 12.100 libswscale 7. 5.100 / 7. 5.100 libswresample 4. 12.100 / 4. 12.100 libpostproc 57. 3.100 / 57. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4': Metadata: major_brand : mp42 minor_version : 1 compatible_brands: isommp41mp42 creation_time : 2005-05-05T09:05:05.000000Z location : -36.6101-066.91515+119.900/ location-eng : -36.6101-066.91515+119.900/ com.apple.quicktime.location.ISO6709: -36.6101-066.91515+119.900/ Duration: 00:00:04.00, start: 0.000000, bitrate: 2593 kb/s Stream #0:0[0x1](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 133 kb/s (default) Metadata: handler_name : Core Media Audio vendor_id : [0][0][0][0] Stream #0:1[0x2](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 2452 kb/s, 25 fps, 25 tbr, 25k tbn (default) Metadata: handler_name : Core Media Video vendor_id : [0][0][0][0] Output #0, mp4, to 'output.mp4': Metadata: major_brand : mp42 minor_version : 1 compatible_brands: isommp41mp42 creation_time : 2005-05-05T09:05:05.000000Z location : -36.6101-066.91515+119.900/ location-eng : -36.6101-066.91515+119.900/ com.apple.quicktime.location.ISO6709: -36.6101-066.91515+119.900/ encoder : Lavf60.16.100 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 2452 kb/s, 25 fps, 25 tbr, 25k tbn (default) Metadata: handler_name : Core Media Video vendor_id : [0][0][0][0] Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 133 kb/s (default) Metadata: handler_name : Core Media Audio vendor_id : [0][0][0][0] Stream mapping: Stream #0:1 -> #0:0 (copy) Stream #0:0 -> #0:1 (copy) Press [q] to stop, [?] for help [out#0/mp4 @ 0x7f85f801f4c0] video:1197kB audio:66kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.329143% size= 1268kB time=00:00:03.98 bitrate=2603.7kbits/s speed=1.26e+03x
Keys
, UserData
and ItemList
are all copied to Keys
tags embedded in UserData
atom 'MOV-Movie-UserData-Meta-Keys'
which Apple's apps do not display. exiftool -G5 switch reveals that difference (output grouped as Keys-UserData-ItemList
):
exiftool -a -G5 -s -n -api LargeFileSupport=1 -Keys:All -UserData:All -ItemList:All . ======== ./input.mp4 [MOV-Movie-Meta-Keys] GPSCoordinates : -36.6101 -66.91515 119.9 [MOV-Movie-UserData] GPSCoordinates : -36.6101 -66.91515 119.9 [MOV-Movie-UserData-Meta-ItemList] GPSCoordinates: -36.6101 -66.91515 119.9 ======== ./output.mp4 [MOV-Movie-UserData-Meta-Keys] GPSCoordinates : -36.6101 -66.91515 119.9 [MOV-Movie-UserData-Meta-Keys] Location : -36.6101-066.91515+119.900/ [MOV-Movie-UserData-Meta-Keys] Location-eng : -36.6101-066.91515+119.900/ [MOV-Movie-UserData] LocationInformation : (none) Role=shooting Lat=-36.61009 Lon=-66.91515 Alt=119.90 Body=earth Notes= [MOV-Movie-UserData-Meta-Keys] Location : -36.6101-066.91515+119.900/ [MOV-Movie-UserData] LocationInformation : (none) Role=shooting Lat=-36.61009 Lon=-66.91515 Alt=119.90 Body=earth Notes=
The same with exiftool G1 switch. ffmpeg adds those extra lines for UserData
and ItemList
GPS:
exiftool -a -G1 -s -n -api LargeFileSupport=1 -Keys:All -UserData:All -ItemList:All . ======== ./input.mp4 [Keys] GPSCoordinates : -36.6101 -66.91515 119.9 [UserData] GPSCoordinates : -36.6101 -66.91515 119.9 [ItemList] GPSCoordinates : -36.6101 -66.91515 119.9 ======== ./output.mp4 [Keys] GPSCoordinates : -36.6101 -66.91515 119.9 [Keys] Location : -36.6101-066.91515+119.900/ [Keys] Location-eng : -36.6101-066.91515+119.900/ [UserData] LocationInformation : (none) Role=shooting Lat=-36.61009 Lon=-66.91515 Alt=119.90 Body=earth Notes= [Keys] Location : -36.6101-066.91515+119.900/ [UserData] LocationInformation : (none) Role=shooting Lat=-36.61009 Lon=-66.91515 Alt=119.90 Body=earth Notes=
p.s. Notice that Keys
tags are actually stored inside the ItemList
, so deleting the ItemList
group as a block (i.e. -ItemList:All=
) also deletes Keys tags. Instead, to preserve Keys
tags the ItemList
tags may be deleted individually with -QuickTime:ItemList:All=
.
https://exiftool.org/forum/index.php?topic=14491.msg78100#msg78100
ffprobe output of INPUT.mov