Reference: https://www.bluebill.net/timestamps.html
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Fixing GoPro Video Creation Time
Install Pre-Requisits
Install ffmpeg, coreutils and jq.Check Creation Time
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./correctTime.sh DIVE_2_1_GH010089.MP4
DIVE_2_1_GH010089.MP4
Video Create Time (Zulu): 2023-06-13T19:12:11.000000Z
Video Create Time (local): 2023-06-13T15:12:11 -0400 (EDT)
--------
Video Create Time (without timezone):2023-06-13T19:12:11
Video Create Time (to local):2023-06-13T19:12:11 -0400 (EDT)
--------
Video Create Time (to UTC):2023-06-13T23:12:11.000000Z
To update the metadata use --update
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In the above output we see that the local time was recorded as Zulu time. The local time was 19:12:11.
Fix Creation Time
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./correctTime.sh DIVE_2_1_GH010089.MP4 --update |
Verify Creation Time
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./correctTime.sh DIVE_2_1_GH010089.corrected.MP4
DIVE_2_1_GH010089.corrected.MP4
Video Create Time (Zulu): 2023-06-13T23:12:11.000000Z
Video Create Time (local): 2023-06-13T19:12:11 -0400 (EDT)
--------
Video Create Time (without timezone):2023-06-13T23:12:11
Video Create Time (to local):2023-06-13T23:12:11 -0400 (EDT)
--------
Video Create Time (to UTC):2023-06-14T03:12:11.000000Z
To update the metadata use --update |
Command to Update Creation Time:
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ffmpeg -I <MOVIE> -c copy -metadata creation_time=2023-06-13-23:12:11.000000Z <OUTPUT> |
Add Timestamp to Video
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./timestamp.sh DIVE_2_1_GH010089.corrected.MP4 |
Changes to the timestamp.sh script:
- Removed -vcodec libx265
- Changed location of timestamp to top right corner
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...
#ffmpeg -i "${INPUT}" -vf drawtext="fontsize=30:fontcolor=yellow:text='%{pts\:localtime\:${EPOCH}}':x=(w-text_w) - 10:y=(h-text_h) - 10" -vcodec libx265 -crf 28 "${OUTPUT}"
ffmpeg -i "${INPUT}" -vf drawtext="fontsize=30:fontcolor=white:text='%{pts\:localtime\:${EPOCH}}':x=(w-text_w) - 10:y=10" -crf 28 "${OUTPUT}"
... |
Joining Video Files
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echo file DIVE_2_1_GH010089.corrected.MP4 > mylist.txt
echo file DIVE_2_2_GH020089.corrected.MP4 >> mylist.txt
ffmpeg -f concat -i mylist.txt -c copy output.mp4 |
Get Video File Information
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ffprobe -loglevel 0 -print_format json -show_format -show_streams "${INPUT}" | jq -r .format.tags.creation_time |
brew install ffmpeg
brew install coreutils
brew install jq |
Joining the Videos While Preserving Metadata
First create a text file (e.g. filesToMerge.txt) with all the chaptered video files that you want to merge into a single video e.g.
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file GH010097.MP4
file GH020097.MP4
file GH030097.MP4
file GH040097.MP4 |
Next, check the streams in the video files.
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ffprobe -show_format GH010097.MP4 |
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Stream #0:0[0x1](eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709, progressive), 2704x1520 [SAR 1:1 DAR 169:95], 60002 kb/s, 59.94 fps, 59.94 tbr, 60k tbn (default)
Metadata:
creation_time : 2023-08-09T17:39:29.000000Z
handler_name : GoPro AVC
vendor_id : [0][0][0][0]
encoder : GoPro AVC encoder
timecode : 17:38:25:34
Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
Metadata:
creation_time : 2023-08-09T17:39:29.000000Z
handler_name : GoPro AAC
vendor_id : [0][0][0][0]
timecode : 17:38:25:34
Stream #0:2[0x3](eng): Data: none (tmcd / 0x64636D74) (default)
Metadata:
creation_time : 2023-08-09T17:39:29.000000Z
handler_name : GoPro TCD
timecode : 17:38:25:34
Stream #0:3[0x4](eng): Data: bin_data (gpmd / 0x646D7067), 49 kb/s (default)
Metadata:
creation_time : 2023-08-09T17:39:29.000000Z
handler_name : GoPro MET
Stream #0:4[0x5](eng): Data: none (fdsc / 0x63736466), 13 kb/s (default)
Metadata:
creation_time : 2023-08-09T17:39:29.000000Z
handler_name : GoPro SOS |
The above video has 4 streams. Lets try to join streams 0,1 and 3.
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ffmpeg -f concat -safe 0 -i filesToMerge.txt -c copy -map 0:0 -map 0:1 -map 0:3 -c:v libx264 -pix_fmt yuv420p video-merged.mp4 |
Revise Scripts
Using the scripts from https://www.bluebill.net/timestamps.html
Revise timestamp.sh and correctTime.sh to use 'gdate' instead of 'date'.
See below for revised scripts.
Fixing GoPro Video Creation Time
Check Creation Time
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./correctTime.sh DIVE_2_1_GH010089.MP4
DIVE_2_1_GH010089.MP4
Video Create Time (Zulu): 2023-06-13T19:12:11.000000Z
Video Create Time (local): 2023-06-13T15:12:11 -0400 (EDT)
--------
Video Create Time (without timezone):2023-06-13T19:12:11
Video Create Time (to local):2023-06-13T19:12:11 -0400 (EDT)
--------
Video Create Time (to UTC):2023-06-13T23:12:11.000000Z
To update the metadata use --update
|
In the above output we see that the local time was recorded as Zulu time. The local time was 19:12:11.
Fix Creation Time
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./correctTime.sh DIVE_2_1_GH010089.MP4 --update |
Verify Creation Time
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./correctTime.sh DIVE_2_1_GH010089.corrected.MP4
DIVE_2_1_GH010089.corrected.MP4
Video Create Time (Zulu): 2023-06-13T23:12:11.000000Z
Video Create Time (local): 2023-06-13T19:12:11 -0400 (EDT)
--------
Video Create Time (without timezone):2023-06-13T23:12:11
Video Create Time (to local):2023-06-13T23:12:11 -0400 (EDT)
--------
Video Create Time (to UTC):2023-06-14T03:12:11.000000Z
To update the metadata use --update |
Command to Update Creation Time:
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ffmpeg -I <MOVIE> -c copy -metadata creation_time=2023-06-13-23:12:11.000000Z <OUTPUT> |
Add Timestamp to Video
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./timestamp.sh DIVE_2_1_GH010089.corrected.MP4 |
Changes to the timestamp.sh script:
- Removed -vcodec libx265
- Changed location of timestamp to top right corner
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...
#ffmpeg -i "${INPUT}" -vf drawtext="fontsize=30:fontcolor=yellow:text='%{pts\:localtime\:${EPOCH}}':x=(w-text_w) - 10:y=(h-text_h) - 10" -vcodec libx265 -crf 28 "${OUTPUT}"
ffmpeg -i "${INPUT}" -vf drawtext="fontsize=30:fontcolor=white:text='%{pts\:localtime\:${EPOCH}}':x=(w-text_w) - 10:y=10" -crf 28 "${OUTPUT}"
... |
Get Video File Information
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ffprobe -loglevel 0 -print_format json -show_format -show_streams <VIDEO_FILE> |
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{
"streams": [
{
"index |
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{ "streams": [ { "index": 0, "codec_name": "aac", "codec_long_name": "AAC (Advanced Audio Coding)", "profile": "LC", "codec_type": "audio", "codec_time_base": "1/48000", "codec_tag_string": "mp4a", "codec_tag": "0x6134706d", "sample_fmt": "fltp", "sample_rate": "48000", "channels": 2, "channel_layout": "stereo", "bits_per_sample": 0, "r_frame_rate": "0/0", "avg_frame_rate": "0/0", "time_base": "1/48000", "start_pts": 0, "start_time": "0.000000", "duration_ts": 35213578, "duration": "733.616208", "bit_rate": "119736", "max_bit_rate": "128000", "nb_frames": "34391", "disposition": { "default": 1, "dub": 0, "original": 0, "comment": 0, "lyrics"codec_name": 0"aac", "codec_long_name": "AAC (Advanced Audio Coding)"karaoke": 0, "forcedprofile": 0"LC", "hearingcodec_impairedtype": 0"audio", "visualcodec_time_impairedbase": 0"1/48000", "cleancodec_tag_effectsstring": 0"mp4a", "attachedcodec_pictag": 0"0x6134706d", "timedsample_thumbnailsfmt": 0"fltp", }"sample_rate": "48000", "tagschannels": { 2, "creationchannel_timelayout": "2023-07-16T15:22:49.000000Zstereo", "languagebits_per_sample": "eng"0, "handlerr_frame_namerate": "Core Media Audio"0/0", }"avg_frame_rate": "0/0", }, {"time_base": "1/48000", "indexstart_pts": 10, "codecstart_nametime": "h2640.000000", "codecduration_long_namets": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 1035213578, "duration": "733.616208", "profilebit_rate": "High119736", "codecmax_bit_typerate": "video128000", "codecnb_time_baseframes": "1001/12000034391", "codec_tag_stringdisposition": "avc1",{ "codec_tag "default": "0x31637661"1, "widthdub": 12800, "heightoriginal": 7200, "coded_widthcomment": 12800, "coded_height "lyrics": 7200, "has_b_frames "karaoke": 0, "sample_aspect_ratio "forced": "1:1"0, "displayhearing_aspect_ratioimpaired": "16:9"0, "pixvisual_fmtimpaired": "yuv420p"0, "level "clean_effects": 320, "colorattached_rangepic": "tv"0, "colortimed_spacethumbnails": "bt709", 0 "color_transfer": "bt709"}, "color_primariestags": "bt709", { "chromacreation_locationtime": "left2023-07-16T15:22:49.000000Z", "field_orderlanguage": "progressiveeng", "refshandler_name": 1, "Core Media Audio" "is_avc": "true", } }, "nal_length_size": "4", { "r_frame_rateindex": "60000/1001"1, "avgcodec_frame_ratename": "60000/1001h264", "timecodec_long_basename": "1/60000H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10", "start_ptsprofile": 0"High", "startcodec_timetype": "0.000000video", "durationcodec_time_tsbase": 44016973"1001/120000", "durationcodec_tag_string": "733.616217avc1", "bitcodec_ratetag": "80698380x31637661", "bits_per_raw_samplewidth": "8"1280, "nb_framesheight": "43973"720, "dispositioncoded_width": {1280, "default"coded_height": 1720, "dubhas_b_frames": 0, "originalsample_aspect_ratio": 0"1:1", "comment"display_aspect_ratio": 0"16:9", "lyrics"pix_fmt": 0"yuv420p", "karaokelevel": 032, "forced"color_range": 0"tv", "hearing_impaired"color_space": 0"bt709", "visualcolor_impairedtransfer": 0"bt709", "cleancolor_effectsprimaries": 0"bt709", "attachedchroma_piclocation": 0"left", "timedfield_thumbnailsorder": 0"progressive", "refs": }1, "tagsis_avc": {"true", "creation_time"nal_length_size": "2023-07-16T15:22:49.000000Z4", "languager_frame_rate": "und60000/1001", "handleravg_frame_namerate": "Core Media Video"60000/1001", }"time_base": "1/60000", } ], "start_pts": 0, "format": { "filenamestart_time": "Dive20.mp4000000", "nbduration_streamsts": 244016973, "nb_programs "duration": 0"733.616217", "formatbit_namerate": "mov,mp4,m4a,3gp,3g2,mj28069838", "format_long_name "bits_per_raw_sample": "QuickTime / MOV8", "startnb_timeframes": "0.00000043973", "durationdisposition": "733.616217",{ "size": "751679577", "bit_ratedefault": "8196978"1, "probe_score": 100, "tagsdub": {0, "major_brandoriginal": "mp42"0, "minor_version": "1" "comment": 0, "lyrics": 0, "compatible_brands "karaoke": "isommp41mp42"0, "creation_timeforced": "2023-07-16T15:22:49.000000Z" 0, } } } |
Scripts
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#!/usr/bin/env bash # ----------- # SPDX-License-Identifier: MIT # Copyright (c) 2022 Troy Williams # uuid"hearing_impaired": 0, = 70204dea-f8b9-11ec-a408-cbfc46763958 # author"visual_impaired": 0, = Troy Williams # email = troy.williams@bluebill.net # date"clean_effects": 0, = 2022-06-30 # ----------- # this script will add timestamps (like security cameras) to the bottom left # corner of the video. It will use the creation date as the starting point of # the timestamp counter. The output video will be re-encoded to h265 format. # NOTE: Some videos indicate they are in UTC, but in fact are not.They will need # be correct otherwise the timestamp will be incorrect. # NOTE: If the creation_time isn't set, the video will be skipped. # Usage: # $ ./timestamp.sh 20210613_191928.mp4 # loop through files in a folder: # $ for FILE in ./2022-06-28/*; do ./timestamp.sh "${FILE}"; done # $ for FILE in ./2022-06-28/*; do ./timestamp.sh "${FILE}" --over-write; done # Requirements: # JSON parser: $ sudo apt install jq # References # https://www.cyberciti.biz/faq/unix-linux-bsd-appleosx-bash-assign-variable-command-output/ # https://stackoverflow.com/questions/1955505/parsing-json-with-unix-tools # https://www.baeldung.com/linux/use-command-line-arguments-in-bash-script # https://stackoverflow.com/a/965069 # https://www.howtogeek.com/529219/how-to-parse-json-files-on-the-linux-command-line-with-jq/ # https://cameronnokes.com/blog/working-with-json-in-bash-using-jq/ # https://stackoverflow.com/questions/965053/extract-filename-and-extension-in-bash # https://ourcodeworld.com/articles/read/1484/how-to-get-the-information-and-metadata-of-a-media-file-audio-or-video-in-json-format-with-ffprobe # ffprobe -loglevel 0 -print_format json -show_format -show_streams GX013438.MP4 # ---------------- # Set the script to halt on errors set -e if [[ -z "$1" ]]; then echo "USAGE: $ 1./timestamp.sh video.mp4" exit 1 fi # Get the movie name # MOVIE=${1} # What is the full path of the movie name? INPUT=$(readlink -f "$1") # Strip longest match of */ from start filename="${INPUT##*/}" # Substring from 0 thru pos of filename dir="${INPUT:0:${#INPUT} - ${#filename}}" # Strip shortest match of . plus at least one non-dot char from end base="${filename%.[^.]*}" # Substring from len of base thru end ext="${filename:${#base} + 1}" # If we have an extension and no base, it's really the base if [[ -z "$base" && -n "$ext" ]]; then base=".$ext" ext="" fi # Create the new file name OUTPUT="${dir}"/"${base}".stamped."${ext}" # ---------- # Debugging Code # echo "MOVIE = ${MOVIE}" # echo "INPUT = ${INPUT}" # echo "filename = ${filename}" # echo "dir = ${dir}" # echo "base = ${base}" # echo "ext = ${ext}" # echo "OUTPUT = ${OUTPUT}" # ---------- # need to use raw mode `-r` in jq call to return a raw string otherwise it will # be trouble to deal with STARTDATE=$(ffprobe -loglevel 0 -print_format json -show_format -show_streams "${INPUT}" | jq -r .format.tags.creation_time) if [[ -z "${STARTDATE}" ]]; then echo "ERROR - No creation_time in metadata! ${INPUT}" exit 1 fi # Convert the date to EPOCH. This will be used to set the time for the draw text # method. EPOCH=$(date --date="${STARTDATE}" +%s) echo "Video Create Time: ${STARTDATE} (${EPOCH})" # we assume that the STARTDATE is in UTC 0000, Zulu time, GMT and that we want # to convert it to the local time on the computer. ffmpeg -i "${INPUT}" -vf drawtext="fontsize=30:fontcolor=yellow:text='%{pts\:localtime\:${EPOCH}}':x=(w-text_w) - 10:y=(h-text_h) - 10" -vcodec libx265 -crf 28 "${OUTPUT}" if [ "${3:-"invalid"}" == "--over-write" ]; then echo "Moving ${OUTPUT} -> ${INPUT}" mv "${OUTPUT}" "${INPUT}" else echo "To overwrite the existing video, use --over-write" fi | ||||||
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"attached_pic": 0,
"timed_thumbnails": 0
},
"tags": {
"creation_time": "2023-07-16T15:22:49.000000Z",
"language": "und",
"handler_name": "Core Media Video"
}
}
],
"format": {
"filename": "Dive2.mp4",
"nb_streams": 2,
"nb_programs": 0,
"format_name": "mov,mp4,m4a,3gp,3g2,mj2",
"format_long_name": "QuickTime / MOV",
"start_time": "0.000000",
"duration": "733.616217",
"size": "751679577",
"bit_rate": "8196978",
"probe_score": 100,
"tags": {
"major_brand": "mp42",
"minor_version": "1",
"compatible_brands": "isommp41mp42",
"creation_time": "2023-07-16T15:22:49.000000Z"
}
}
} |
Scripts
Script | Description |
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This script extracts the USAGE: ./correct_time.sh video.mp4 --update | |
Adds Timestamp in the top right hand corner of the video. USAGE: ./timestamp.sh video.mp4 | |
Sets the time to the local time specified and stores in the video as UTC. USAGE: ./setTime.sh video.mp4 '2023-06-13T19:23:59' --update |
References
Reference | URL |
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Add Timestamp to Videos | |
Merging Chaptered GoPro Videos Whilst Preserving Telemetry | Trek View |