Reference: https://www.bluebill.net/timestamps.html
Install Pre-Requisits
Install ffmpeg, coreutils and jq.
brew install ffmpeg brew install coreutils brew install jq
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
./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
./correctTime.sh DIVE_2_1_GH010089.MP4 --update
Verify Creation Time
./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:
ffmpeg -I <MOVIE> -c copy -metadata creation_time=2023-06-13-23:12:11.000000Z <OUTPUT>
Add Timestamp to Video
./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
...
#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
ffprobe -loglevel 0 -print_format json -show_format -show_streams "${INPUT}" | jq -r .format.tags.creation_time
{
"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": 0,
"karaoke": 0,
"forced": 0,
"hearing_impaired": 0,
"visual_impaired": 0,
"clean_effects": 0,
"attached_pic": 0,
"timed_thumbnails": 0
},
"tags": {
"creation_time": "2023-07-16T15:22:49.000000Z",
"language": "eng",
"handler_name": "Core Media Audio"
}
},
{
"index": 1,
"codec_name": "h264",
"codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
"profile": "High",
"codec_type": "video",
"codec_time_base": "1001/120000",
"codec_tag_string": "avc1",
"codec_tag": "0x31637661",
"width": 1280,
"height": 720,
"coded_width": 1280,
"coded_height": 720,
"has_b_frames": 0,
"sample_aspect_ratio": "1:1",
"display_aspect_ratio": "16:9",
"pix_fmt": "yuv420p",
"level": 32,
"color_range": "tv",
"color_space": "bt709",
"color_transfer": "bt709",
"color_primaries": "bt709",
"chroma_location": "left",
"field_order": "progressive",
"refs": 1,
"is_avc": "true",
"nal_length_size": "4",
"r_frame_rate": "60000/1001",
"avg_frame_rate": "60000/1001",
"time_base": "1/60000",
"start_pts": 0,
"start_time": "0.000000",
"duration_ts": 44016973,
"duration": "733.616217",
"bit_rate": "8069838",
"bits_per_raw_sample": "8",
"nb_frames": "43973",
"disposition": {
"default": 1,
"dub": 0,
"original": 0,
"comment": 0,
"lyrics": 0,
"karaoke": 0,
"forced": 0,
"hearing_impaired": 0,
"visual_impaired": 0,
"clean_effects": 0,
"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 |
|---|---|
This script extracts the creation_time, removes the timezone and assigns the local timezone. It then converts this back to UTC and write it back to the video. This fixes issue with GoPro Videos. | |
| Adds Timestamp in the top right hand corner of the video. | |
Sets the time to the local time specified and stores in the video as UTC. USAGE: ./setTime.sh video.mp4 '2012-01-01T12:01:01' |