Add metadata during transcode

This commit is contained in:
Joey Hafner 2022-11-28 22:41:27 -08:00
parent 0795e52712
commit e01ce4f791
2 changed files with 25 additions and 14 deletions

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@ -4,26 +4,27 @@
- [Get Video Info with `mediainfo`](#get-video-info-with-mediainfo) - [Get Video Info with `mediainfo`](#get-video-info-with-mediainfo)
- [Get Test Image with ffmpeg](#get-test-image-with-ffmpeg) - [Get Test Image with ffmpeg](#get-test-image-with-ffmpeg)
- [Batch-ify ffmpeg Command](#batch-ify-ffmpeg-command) - [Batch-ify ffmpeg Command](#batch-ify-ffmpeg-command)
- [Add Metadata to File](#add-metadata-to-file)
- [Transcode Profiles](#transcode-profiles) - [Transcode Profiles](#transcode-profiles)
- [Original [40.3 Mb/s]](#original-403-mbs) - [Original \[40.3 Mb/s\]](#original-403-mbs)
- [Mediainfo](#mediainfo) - [Mediainfo](#mediainfo)
- [Test Image](#test-image) - [Test Image](#test-image)
- [CRF 21 [19.9 Mb/s]](#crf-21-199-mbs) - [CRF 21 \[19.9 Mb/s\]](#crf-21-199-mbs)
- [Mediainfo](#mediainfo-1) - [Mediainfo](#mediainfo-1)
- [Test Image](#test-image-1) - [Test Image](#test-image-1)
- [CRF 27 [10.3 Mb/s]](#crf-27-103-mbs) - [CRF 27 \[10.3 Mb/s\]](#crf-27-103-mbs)
- [Mediainfo](#mediainfo-2) - [Mediainfo](#mediainfo-2)
- [Test Image](#test-image-2) - [Test Image](#test-image-2)
- [1080p CRF 21 [11.9 Mb/s]](#1080p-crf-21-119-mbs) - [1080p CRF 21 \[11.9 Mb/s\]](#1080p-crf-21-119-mbs)
- [Mediainfo](#mediainfo-3) - [Mediainfo](#mediainfo-3)
- [Test Image](#test-image-3) - [Test Image](#test-image-3)
- [1080p CRF 27 [6,232 kb/s]](#1080p-crf-27-6232-kbs) - [1080p CRF 27 \[6,232 kb/s\]](#1080p-crf-27-6232-kbs)
- [Mediainfo](#mediainfo-4) - [Mediainfo](#mediainfo-4)
- [Test Image](#test-image-4) - [Test Image](#test-image-4)
- [720p CRF 21 [6,314 kb/s]](#720p-crf-21-6314-kbs) - [720p CRF 21 \[6,314 kb/s\]](#720p-crf-21-6314-kbs)
- [Mediainfo](#mediainfo-5) - [Mediainfo](#mediainfo-5)
- [Test Image](#test-image-5) - [Test Image](#test-image-5)
- [720p CRF 27 [3,305 kb/s]](#720p-crf-27-3305-kbs) - [720p CRF 27 \[3,305 kb/s\]](#720p-crf-27-3305-kbs)
- [Mediainfo](#mediainfo-6) - [Mediainfo](#mediainfo-6)
- [Test Image](#test-image-6) - [Test Image](#test-image-6)
- [Test a New Profile](#test-a-new-profile) - [Test a New Profile](#test-a-new-profile)
@ -49,6 +50,16 @@ do
done done
``` ```
# Add Metadata to File
ffmpeg can add metadata to files using the `-metadata` flag. In the profiles described below, this is used to add a comment describing the profile used to create the file (e.g. `-metadata comment="x264 720p CRF 27"`).
This comment flag is visible in Windows file details.
![File details](img/ffmpeg/File%20Details.png)
More information: [corbpie.com](https://write.corbpie.com/adding-metadata-to-a-video-or-audio-file-with-ffmpeg/).
# Transcode Profiles # Transcode Profiles
## Original [40.3 Mb/s] ## Original [40.3 Mb/s]
The pre-transcode data for the sample video. It was recorded using OBS with the following encoder settings at 1440p60: The pre-transcode data for the sample video. It was recorded using OBS with the following encoder settings at 1440p60:
@ -137,7 +148,7 @@ Alternate group : 1
![Test Image - Original](img/ffmpeg/original.png) ![Test Image - Original](img/ffmpeg/original.png)
## CRF 21 [19.9 Mb/s] ## CRF 21 [19.9 Mb/s]
`ffmpeg -i "$input" -movflags +faststart -c:v libx264 -preset slower -crf 21 "$output"` `ffmpeg -i "$input" -metadata comment="x264 CRF 21" -movflags +faststart -c:v libx264 -preset slower -crf 21 "$output"`
### Mediainfo ### Mediainfo
``` ```
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![Test Image - CRF 21](img/ffmpeg/CRF%2021.png) ![Test Image - CRF 21](img/ffmpeg/CRF%2021.png)
## CRF 27 [10.3 Mb/s] ## CRF 27 [10.3 Mb/s]
`ffmpeg -i "$input" -movflags +faststart -c:v libx264 -preset slower -crf 27 "$output"` `ffmpeg -i "$input" -metadata comment="x264 CRF 27" -movflags +faststart -c:v libx264 -preset slower -crf 27 "$output"`
### Mediainfo ### Mediainfo
``` ```
@ -272,7 +283,7 @@ mdhd_Duration : 972629
![Test Image - CRF 27](img/ffmpeg/CRF%2027.png) ![Test Image - CRF 27](img/ffmpeg/CRF%2027.png)
## 1080p CRF 21 [11.9 Mb/s] ## 1080p CRF 21 [11.9 Mb/s]
`ffmpeg -i "$input" -movflags +faststart -vf scale=1920:1080 -c:v libx264 -preset slower -crf 21 "$output"` `ffmpeg -i "$input" -metadata comment="x264 1080p CRF 21" -movflags +faststart -vf scale=1920:1080 -c:v libx264 -preset slower -crf 21 "$output"`
### Mediainfo ### Mediainfo
``` ```
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![Test Image - 1080p CRF 21](img/ffmpeg/1080p%20CRF%2021.png) ![Test Image - 1080p CRF 21](img/ffmpeg/1080p%20CRF%2021.png)
## 1080p CRF 27 [6,232 kb/s] ## 1080p CRF 27 [6,232 kb/s]
`ffmpeg -i "$input" -movflags +faststart -vf scale=1920:1080 -c:v libx264 -preset slower -crf 27 "$output"` `ffmpeg -i "$input" -metadata comment="x264 1080p CRF 27" -movflags +faststart -vf scale=1920:1080 -c:v libx264 -preset slower -crf 27 "$output"`
Our test file described in the [Get Video Info](#get-video-info-with-mediainfo) section was compressed from 40.5 Mbps (over 16m12s) to Our test file described in the [Get Video Info](#get-video-info-with-mediainfo) section was compressed from 40.5 Mbps (over 16m12s) to
### Mediainfo ### Mediainfo
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## 720p CRF 21 [6,314 kb/s] ## 720p CRF 21 [6,314 kb/s]
`ffmpeg -i "$input" -movflags +faststart -vf scale=1280:720 -c:v libx264 -preset slower -crf 21 "$output"` `ffmpeg -i "$input" -metadata comment="x264 720p CRF 21" -movflags +faststart -vf scale=1280:720 -c:v libx264 -preset slower -crf 21 "$output"`
### Mediainfo ### Mediainfo
``` ```
@ -473,7 +484,7 @@ mdhd_Duration : 972629
![Test Image - 720p CRF 21](img/ffmpeg/720p%20CRF%2021.png) ![Test Image - 720p CRF 21](img/ffmpeg/720p%20CRF%2021.png)
## 720p CRF 27 [3,305 kb/s] ## 720p CRF 27 [3,305 kb/s]
`ffmpeg -i "$input" -movflags +faststart -vf scale=1280:720 -c:v libx264 -preset slower -crf 27 "$output"` `ffmpeg -i "$input" -metadata comment="x264 720p CRF 27" -movflags +faststart -vf scale=1280:720 -c:v libx264 -preset slower -crf 27 "$output"`
### Mediainfo ### Mediainfo
``` ```

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