Answers.Body: <p>If you shot video with <code>24 fps</code>, the time for 1 frame <code>is 1/24 sec</code> - this is your <em>maximum shutter speed</em>.</p>
  
  <p>In reality it may be a little shorter - about <code>1/30 sec</code>.</p>
  
  <p>In cinema film projector every frame is projected <em>twice</em> to avoid perception of blinking - so 1/48 sec is <em>not</em> a shutter speed, but the maximum time for projecting a frame.</p>
  
  <p>Smartphones' movie cameras adjust their shutter speed by light conditions <em>without your consent and awareness</em>. You may consider to use some software to control it, as <a href="https://itunes.apple.com/us/app/manual-camera-custom-exposure/id916568801?mt=8" rel="nofollow noreferrer">Manual Camera</a> from iTunes</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-08T06:39:59.413Z
Answers.Text: I know it may be shorter, but I'm trying to find out what the actual value was. For still photos, I can examine the EXIF. What's the equivalent for video? Btw, we're not talking about cinema theatres here.
Answers.UserDisplayName: Kartick Vaddadi
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-08T09:22:56.470Z
Answers.Text: Which movie camera you used? Has it different recording speeds?
Answers.UserDisplayName: MarianD
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-08T09:47:35.430Z
Answers.Text: iPhone 7 Plus. Yes, it supports different shutter speeds.
Answers.UserDisplayName: Kartick Vaddadi
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-08T10:29:31.323Z
Answers.Text: Oh, so it is not a professional movie camera. It adjusts its shutter speed by light conditions without your consent and awareness. You may consider to use some software to control it, as [Manual Camera](https://itunes.apple.com/us/app/manual-camera-custom-exposure/id916568801?mt=8) from iTunes.
Answers.UserDisplayName: MarianD
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-08T11:03:42.903Z
Answers.Text: Again, the goal isn't to control it, but merely to understand what the value used by third-party apps was.
Answers.UserDisplayName: Kartick Vaddadi
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-08T11:38:41.523Z
Answers.Text: So you have no chance - video files have metadata (something as EXIF for static pictures) but they don't contain info about shutter speed. And as I mentioned, the shutter speed is in most cases variable, it constantly adjust to light conditions.
Answers.UserDisplayName: MarianD
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-06T11:13:07.707Z
Answers.LastActivityDate: 2017-05-08T10:33:21.110Z
Answers.LastEditDate: 2017-05-08T10:33:21.110Z
Answers.UserDisplayName: MarianD
Answers.Body: <p>If the data was recorded by the camera as EXIF MetaData, Adobe Bridge would reveal the camera settings under the Metadata Panel. You may have to customize within Bridge WHICH metadata you want to look at; because there are literally hundreds, thousands, of types of EXIF data; which could or could not have been embedded; AND at times; you will find what you need hidden in a strange EXIF container. </p>
  
  <p>Simply put; if you don't see a shutter speed setting under MAIN, or CAMERA metadata; the brand camera/type, could have written it elsewhere; so show all; expand all, and scroll down to see if the data is possibly there; hidden in a collapsed field. </p>
  
  <p>If you shot the video at 24fps; you are right in thinking that it likely was recorded at 1/48 / 180 shutter. However; I would think; just based off the engineering / camera / lens type which is built onto the iPhone 7; and how I would engineer the camera to work using, which it does by default-  auto-exposure; that it would rely on aperture priority for exposure; and would thus constantly adjust your shutter speed on the fly based on it's exposure method. So if you did a constant shot from a dark area to bright area; you'd literally see an on the fly adjustment from 1/48 all the way up to 1/4000 or higher. Then aperture might kick in, as the phone as no ND filters to fall back on. </p>
  
  <p>I only add that because usually iPhone footage shot outdoors in bright sunlight looks like it was recorded at HIGH shutter (strobe effect) rather than iris down. The diameter on the lens of an iPhone 7 also would make me think they would use Aperture Priority (constant) <em>as it's practically a pin-hole camera to begin with.</em> </p>
  
  <p>Cheers!</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-09T23:01:18.657Z
Answers.LastActivityDate: 2017-05-09T23:01:18.657Z
Answers.UserDisplayName: McFlySoHigh
Body: <p>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.</p>
  
  <p>Neither does exiftool. Here's exiftool's output:</p>
  
  <pre><code>ExifTool Version Number         : 10.36
  File Name                       : 24 FPS at 480p.mov
  Directory                       : /Users/kartick/Desktop/Google Drive/Photos/Comparisons/Night Video Comparison
  File Size                       : 7.7 MB
  File Modification Date/Time     : 2017:04:18 19:55:15+05:30
  File Access Date/Time           : 2017:05:05 06:57:31+05:30
  File Inode Change Date/Time     : 2017:04:24 11:25:17+05:30
  File Permissions                : rwxr-xr-x
  File Type                       : MOV
  File Type Extension             : mov
  MIME Type                       : video/quicktime
  Major Brand                     : Apple QuickTime (.MOV/QT)
  Minor Version                   : 0.0.0
  Compatible Brands               : qt
  Movie Data Size                 : 8037178
  Movie Data Offset               : 36
  Movie Header Version            : 0
  Create Date                     : 2017:04:18 14:25:15
  Modify Date                     : 2017:04:18 14:25:38
  Time Scale                      : 600
  Duration                        : 22.75 s
  Preferred Rate                  : 1
  Preferred Volume                : 100.00%
  Preview Time                    : 0 s
  Preview Duration                : 0 s
  Poster Time                     : 0 s
  Selection Time                  : 0 s
  Selection Duration              : 0 s
  Current Time                    : 0 s
  Next Track ID                   : 3
  Track Header Version            : 0
  Track Create Date               : 2017:04:18 14:25:15
  Track Modify Date               : 2017:04:18 14:25:38
  Track ID                        : 1
  Track Duration                  : 22.75 s
  Track Layer                     : 0
  Track Volume                    : 100.00%
  Image Width                     : 640
  Image Height                    : 480
  Clean Aperture Dimensions       : 640x480
  Production Aperture Dimensions  : 640x480
  Encoded Pixels Dimensions       : 640x480
  Graphics Mode                   : ditherCopy
  Op Color                        : 32768 32768 32768
  Compressor ID                   : avc1
  Source Image Width              : 640
  Source Image Height             : 480
  X Resolution                    : 72
  Y Resolution                    : 72
  Compressor Name                 : H.264
  Bit Depth                       : 24
  Video Frame Rate                : 24.004
  Matrix Structure                : 1 0 0 0 1 0 0 0 1
  Media Header Version            : 0
  Media Create Date               : 2017:04:18 14:25:15
  Media Modify Date               : 2017:04:18 14:25:38
  Media Time Scale                : 44100
  Media Duration                  : 22.80 s
  Media Language Code             : und
  Balance                         : 0
  Handler Class                   : Data Handler
  Handler Vendor ID               : Apple
  Handler Description             : Core Media Data Handler
  Audio Format                    : mp4a
  Audio Channels                  : 1
  Audio Bits Per Sample           : 16
  Audio Sample Rate               : 44100
  Purchase File Format            : mp4a
  Handler Type                    : Metadata Tags
  Software                        : ProCamera 10.2
  Make                            : Apple
  Model                           : iPhone 7 Plus
  Avg Bitrate                     : 2.83 Mbps
  Image Size                      : 640x480
  Megapixels                      : 0.307
  Rotation                        : 0
  </code></pre>
  
  <p>I tried saving a frame to an image file in VLC, but it saved without metadata, so I couldn't figure the shutter speed out.</p>
  
  <p>I know the shutter speed is usually 1/48s (half of 1/frame rate), but this video was shot at night, so I want to check if the camera app used a longer shutter speed.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-05-05T12:18:59.250Z
Comments.Text: Could be that the camera didn't record it to the metadata.
Comments.UserDisplayName: stib
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-05-08T06:41:20.433Z
Comments.Text: Hmm... I tried five different camera apps, and exiftool didn't mention shutter speed for any of them. So is there no way to find out?
Comments.UserDisplayName: Kartick Vaddadi
Tags: <framerate><metadata>
Title: How do I find out about the shutter speed of frames in a video?
UserDisplayName: Kartick Vaddadi
ThreadText: # How do I find out about the shutter speed of frames in a video?
  
  (Asked by: username_0 on 2017-05-05)
  
  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's output:
  
  ```
  ExifTool Version Number         : 10.36
  File Name                       : 24 FPS at 480p.mov
  Directory                       : /Users/username_0/Desktop/Google Drive/Photos/Comparisons/Night Video Comparison
  File Size                       : 7.7 MB
  File Modification Date/Time     : 2017:04:18 19:55:15+05:30
  File Access Date/Time           : 2017:05:05 06:57:31+05:30
  File Inode Change Date/Time     : 2017:04:24 11:25:17+05:30
  File Permissions                : rwxr-xr-x
  File Type                       : MOV
  File Type Extension             : mov
  MIME Type                       : video/quicktime
  Major Brand                     : Apple QuickTime (.MOV/QT)
  Minor Version                   : 0.0.0
  Compatible Brands               : qt
  Movie Data Size                 : 8037178
  Movie Data Offset               : 36
  Movie Header Version            : 0
  Create Date                     : 2017:04:18 14:25:15
  Modify Date                     : 2017:04:18 14:25:38
  Time Scale                      : 600
  Duration                        : 22.75 s
  Preferred Rate                  : 1
  Preferred Volume                : 100.00%
  Preview Time                    : 0 s
  Preview Duration                : 0 s
  Poster Time                     : 0 s
  Selection Time                  : 0 s
  Selection Duration              : 0 s
  Current Time                    : 0 s
  Next Track ID                   : 3
  Track Header Version            : 0
  Track Create Date               : 2017:04:18 14:25:15
  Track Modify Date               : 2017:04:18 14:25:38
  Track ID                        : 1
  Track Duration                  : 22.75 s
  Track Layer                     : 0
  Track Volume                    : 100.00%
  Image Width                     : 640
  Image Height                    : 480
  Clean Aperture Dimensions       : 640x480
  Production Aperture Dimensions  : 640x480
  Encoded Pixels Dimensions       : 640x480
  Graphics Mode                   : ditherCopy
  Op Color                        : 32768 32768 32768
  Compressor ID                   : avc1
  Source Image Width              : 640
  Source Image Height             : 480
  X Resolution                    : 72
  Y Resolution                    : 72
  Compressor Name                 : H.264
  Bit Depth                       : 24
  Video Frame Rate                : 24.004
  Matrix Structure                : 1 0 0 0 1 0 0 0 1
  Media Header Version            : 0
  Media Create Date               : 2017:04:18 14:25:15
  Media Modify Date               : 2017:04:18 14:25:38
  Media Time Scale                : 44100
  Media Duration                  : 22.80 s
  Media Language Code             : und
  Balance                         : 0
  Handler Class                   : Data Handler
  Handler Vendor ID               : Apple
  Handler Description             : Core Media Data Handler
  Audio Format                    : mp4a
  Audio Channels                  : 1
  Audio Bits Per Sample           : 16
  Audio Sample Rate               : 44100
  Purchase File Format            : mp4a
  Handler Type                    : Metadata Tags
  Software                        : ProCamera 10.2
  Make                            : Apple
  Model                           : iPhone 7 Plus
  Avg Bitrate                     : 2.83 Mbps
  Image Size                      : 640x480
  Megapixels                      : 0.307
  Rotation                        : 0
  
  ```
  
  I tried saving a frame to an image file in VLC, but it saved without metadata, so I couldn't figure the shutter speed out.
  
  I know the shutter speed is usually 1/48s (half of 1/frame rate), but this video was shot at night, so I want to check if the camera app used a longer shutter speed.
  
  **Tags:** framerate, metadata
  
  > **Comments:**
  > **username_1**: Could be that the camera didn't record it to the metadata.  
  > **username_0**: Hmm... I tried five different camera apps, and exiftool didn't mention shutter speed for any of them. So is there no way to find out?  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_3 on 2017-05-09. Score: 2 | Accepted answer
  
  If the data was recorded by the camera as EXIF MetaData, Adobe Bridge would reveal the camera settings under the Metadata Panel. You may have to customize within Bridge WHICH metadata you want to look at; because there are literally hundreds, thousands, of types of EXIF data; which could or could not have been embedded; AND at times; you will find what you need hidden in a strange EXIF container.
  
  Simply put; if you don't see a shutter speed setting under MAIN, or CAMERA metadata; the brand camera/type, could have written it elsewhere; so show all; expand all, and scroll down to see if the data is possibly there; hidden in a collapsed field.
  
  If you shot the video at 24fps; you are right in thinking that it likely was recorded at 1/48 / 180 shutter. However; I would think; just based off the engineering / camera / lens type which is built onto the iPhone 7; and how I would engineer the camera to work using, which it does by default- auto-exposure; that it would rely on aperture priority for exposure; and would thus constantly adjust your shutter speed on the fly based on it's exposure method. So if you did a constant shot from a dark area to bright area; you'd literally see an on the fly adjustment from 1/48 all the way up to 1/4000 or higher. Then aperture might kick in, as the phone as no ND filters to fall back on.
  
  I only add that because usually iPhone footage shot outdoors in bright sunlight looks like it was recorded at HIGH shutter (strobe effect) rather than iris down. The diameter on the lens of an iPhone 7 also would make me think they would use Aperture Priority (constant) *as it's practically a pin-hole camera to begin with.*
  
  Cheers!
  
  
  ---
  
  ### Answer by username_2 on 2017-05-06. Score: 0
  
  If you shot video with `24 fps`, the time for 1 frame `is 1/24 sec` - this is your *maximum shutter speed*.
  
  In reality it may be a little shorter - about `1/30 sec`.
  
  In cinema film projector every frame is projected *twice* to avoid perception of blinking - so 1/48 sec is *not* a shutter speed, but the maximum time for projecting a frame.
  
  Smartphones' movie cameras adjust their shutter speed by light conditions *without your consent and awareness*. You may consider to use some software to control it, as [Manual Camera](https://itunes.apple.com/us/app/manual-camera-custom-exposure/id916568801?mt=8) from iTunes
  
  > **Comments:**
  > **username_0**: I know it may be shorter, but I'm trying to find out what the actual value was. For still photos, I can examine the EXIF. What's the equivalent for video? Btw, we're not talking about cinema theatres here.  
  > **username_2**: Which movie camera you used? Has it different recording speeds?  
  > **username_0**: iPhone 7 Plus. Yes, it supports different shutter speeds.  
  > **username_2**: Oh, so it is not a professional movie camera. It adjusts its shutter speed by light conditions without your consent and awareness. You may consider to use some software to control it, as [Manual Camera](https://itunes.apple.com/us/app/manual-camera-custom-exposure/id916568801?mt=8) from iTunes.  
  > **username_0**: Again, the goal isn't to control it, but merely to understand what the value used by third-party apps was.  
  > **username_2**: So you have no chance - video files have metadata (something as EXIF for static pictures) but they don't contain info about shutter speed. And as I mentioned, the shutter speed is in most cases variable, it constantly adjust to light conditions.  
  
  ---
  
  