Chapter 6: Flashback Recording - Your Personal Time Machine

Imagine this scenario: You're in an important Zoom meeting, fully engaged in the conversation, when suddenly your colleague says something profound—something you absolutely need to capture. You fumble for the record button, but by the time you start recording, that brilliant moment is already gone. The key insight, the perfect quote, the crucial decision... lost forever.

Or imagine: Your child says their first word during a video call with grandparents. Everyone is amazed, but you weren't recording. You try to get them to say it again, but the moment has passed.

This is exactly the problem Flashback solves. It's SeaMeet's most unique and powerful feature—a time machine that lets you capture moments from the past.

What is Flashback Recording?

Flashback is SeaMeet's ability to record moments that already happened—up to 2 minutes in the past—without you pressing the record button in advance.

Think of it like a security camera: Security cameras record continuously, overwriting old footage after a set time. If something happens, you can look back at the recording even though you didn't know in advance that you needed to record.

Flashback works the same way, but for your computer audio and video.

The Core Concept: The Ring Buffer

To understand Flashback, you need to understand one key concept: the ring buffer.

What is a Ring Buffer?

Imagine a cassette tape with a very specific behavior:

Normal cassette tape:

Records until it's full
Then stops
You have to flip it or put in a new tape

Ring buffer cassette tape:

Records continuously
When it reaches the end, it automatically records over the beginning
Always maintains the last X minutes (whatever you configured)
Never stops, never fills up

Analogy: The Moving Window

Think of Flashback like looking through a moving train window:

The landscape constantly scrolls by
You can see the last mile you've traveled
But once scenery passes behind you, it disappears
The window always shows "the last mile"

Flashback's buffer is that "window"—it always contains the last 30 seconds (or whatever duration you chose) of audio/video.

How the Ring Buffer Works in Practice

Let's say you set Flashback to a 30-second buffer:

Timeline of events:

Time:     0s    10s    20s    30s    40s    50s    60s
          │      │      │      │      │      │      │
Buffer:   [AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA]
                           ↓
          After 30 seconds, the buffer is full
          
Time continues: 60s    70s    80s    90s
                │      │      │      │
Buffer:   [AAAAAAAABBBBBBBBBBBBBBBBBBBBBBBB]
           Old → Being overwritten → New
           
At 90 seconds: The buffer contains seconds 60-90
               (The first 30 seconds are gone)

What this means:

The buffer is always recording
It keeps only the most recent 30 seconds
Old content is automatically deleted to make room for new content
When you press "Record," SeaMeet grabs the current buffer + starts recording

Flashback vs. Normal Recording

Let's compare how a normal recording works versus Flashback:

Normal Recording

Scenario: Something important happens at 2:00 PM

1:55 PM - You think: "I should record this meeting"
1:56 PM - You click "Record" button
1:57 PM - Recording starts
2:00 PM - Important thing happens ✓ CAPTURED

Result: You captured it because you planned ahead

The problem: You had to know in advance that something important was coming.

Flashback Recording

Scenario: Something important happens at 2:00 PM

1:30 PM - You enable Flashback (30s buffer)
1:30-2:00 PM - Buffer fills up, continuously recording
2:00 PM - Important thing happens
2:00 PM - You think: "Oh! I need to record that!"
2:00 PM - You click "Record"
          ↓
          SeaMeet grabs the last 30 seconds from buffer
          (1:59:30 - 2:00:00)
          +
          Starts recording from now forward
          (2:00:00 onwards)
          
Result: Recording contains 1:59:30 - 2:00:30
        ✓ You got the important moment even though you 
          didn't press record until AFTER it happened!

The magic: You can press record AFTER the important moment, and still capture it!

Two Types of Flashback

SeaMeet offers two Flashback modes: Audio-only and Video + Audio.

Audio Flashback (AUDIO_ONLY)

What it records: Just audio (microphone, system audio, or both) Buffer duration: 30 seconds (fixed) Memory usage: ~30-50 MB of RAM Indicator: ⏪ icon or "FLASHBACK 30S"

Best for:

Recording meetings
Capturing voice conversations
When you only need audio
Lower memory usage

When to use:

Zoom/Teams meetings
Phone calls
Any audio-only situation
When your computer has limited RAM

Visual states:

Gray: Flashback off
Amber/Yellow: Buffer filling up
Green: Buffer full, ready to record

Video Flashback (VIDEO_FULLSCREEN)

What it records: Video of your screen + audio Buffer duration: Configurable (10s, 30s, 60s, 90s, or 120s) Memory usage: 50-600 MB depending on duration and quality Indicator: 🎥 icon or "FLASHBACK 10S/30S/60S/90S/120S"

Best for:

Capturing important screen moments
Recording video calls
Capturing unexpected visual events
Gaming highlights

When to use:

When you need to see what happened
Video presentations
Screen sharing sessions
Any visual content

Configuration options:

10 seconds (~50 MB RAM)
30 seconds (~150 MB RAM) - default
60 seconds (~300 MB RAM)
90 seconds (~450 MB RAM)
120 seconds (~600 MB RAM)

Which duration to choose:

10 seconds: Fastest fill, least memory, good for quick reactions
30 seconds: Best balance (default recommendation)
60-120 seconds: More safety buffer, but uses significant RAM

How to Enable and Use Flashback

Let's walk through using Flashback step-by-step.

Step 1: Enable Flashback

Method 1: Through the Top Navigation

Look for the Flashback button in the top bar (⏪ icon)
Click it to cycle through modes:
- OFF → AUDIO ONLY → VIDEO → OFF
Stop on your desired mode

Method 2: Through Settings

Click ⚙️ Settings
Go to "Flashback" section
Select mode:
- Off
- Audio only
- Screen (video)
Set buffer duration (for video mode)
Click Apply

Visual indicator in top bar:

OFF:     [⏪] or "FLASHBACK: OFF" (gray)
AUDIO:   [⏪] or "FLASHBACK 30S" (amber when filling, green when ready)
VIDEO:   [🎥] or "FLASHBACK 30S" (amber when filling, green when ready)

Step 2: Wait for the Buffer to Fill

After enabling Flashback, there's a brief waiting period:

For Audio Flashback:

Takes about 27 seconds to reach "ready" state
Status shows "Filling buffer..." or amber color
Once 90% full, turns green and says "Ready"

For Video Flashback:

Takes 90% of your configured duration to be ready
- 10s buffer: ~9 seconds to fill
- 30s buffer: ~27 seconds to fill
- 60s buffer: ~54 seconds to fill
- etc.
Shows progress indicator or "Buffering..."
Turns green when ready

Why you need to wait: The buffer needs to fill up with actual content before it's useful. An empty buffer can't give you past moments!

The indicator colors:

Gray: Flashback is disabled
Amber/Yellow: Buffer is filling (not ready yet)
Green: Buffer is full and ready

Step 3: Press Record When You Need It

When something important happens:

Press the Record button 🔴 (or use keyboard shortcut)
SeaMeet immediately:
- Captures the current buffer (the last 30 seconds or whatever you configured)
- Starts recording from that moment forward
- Combines them into one seamless file
Keep recording until you're done
Press Stop ⏹️ when finished

What happens in the file:

[Buffer content: last 30 seconds] + [New recording from now on]
          ↓
    One continuous file!

Example:

Buffer contains: 1:59:30 - 2:00:00 (last 30 seconds)
You press Record at 2:00:00
Recording continues: 2:00:00 - 2:05:00
Final file: 1:59:30 - 2:05:00 (5 minutes 30 seconds total)
You captured 30 seconds of "past" + 5 minutes of "present"

Step 4: The Flashback Continues

Here's the beautiful part: After you stop recording, Flashback keeps running!

This means:

You can make multiple recordings with Flashback
Each one captures a different moment from the past
The buffer keeps filling continuously
You're always ready for the next important moment

Example workflow:

9:00 AM - Enable Audio Flashback
9:00 AM - Buffer starts filling
9:01 AM - Buffer ready (green)

10:15 AM - Important comment made
10:15 AM - Press Record
10:15 AM - Flashback captures 30s before + records forward
10:20 AM - Stop recording
          → File saved: "Flashback_Meeting_101501.webm"
          → Flashback continues running!

10:45 AM - Another important moment
10:45 AM - Press Record again
10:45 AM - Flashback captures different 30s before + records forward
10:50 AM - Stop recording
          → File saved: "Flashback_Meeting_104501.webm"
          → Flashback still running!

One buffer, multiple captures!

Memory Usage Explained

Flashback uses your computer's RAM (memory) to store the buffer. Understanding this helps you use Flashback effectively without slowing down your computer.

How Much RAM Does Flashback Use?

Audio Flashback (30 seconds):

~30-50 MB of RAM
Very lightweight
Won't affect most computers

Video Flashback (varies by duration):

Duration	Approximate RAM Usage	Use Case
10 seconds	~50 MB	Minimal impact, quick reactions
30 seconds	~150 MB	Balanced (recommended)
60 seconds	~300 MB	More safety, moderate impact
90 seconds	~450 MB	Extended buffer, higher impact
120 seconds	~600 MB	Maximum buffer, significant impact

What affects memory usage:

Screen resolution: 4K uses more than 1080p
Frame rate: 60fps uses more than 30fps
Quality setting: Higher quality = more memory
Content complexity: Moving video uses more than static screens

Checking Your Available Memory

Before enabling Video Flashback with long durations, check your RAM:

Windows:

Press Ctrl+Shift+Esc (opens Task Manager)
Click "Performance" tab
Look at "Memory" section
Check "Available" amount

Mac:

Open Activity Monitor (from Applications > Utilities)
Click "Memory" tab
Look at "Memory Pressure" graph
Check how much is "Free"

Rule of thumb:

8 GB total RAM: Use 10-30 second buffer
16 GB total RAM: Can use 30-60 second buffer comfortably
32 GB+ total RAM: Can use any duration

Low-Memory Mode

If you're concerned about memory usage:

Enable Low-Memory Mode:

Go to Settings ⚙️
Find "Flashback Settings"
Enable "Low-Memory Mode"

What it does:

Automatically reduces video quality if memory gets tight
Monitors RAM usage
Warns you if Flashback is using too much memory
Helps prevent system slowdown

When to use it:

On computers with 8 GB RAM or less
When running other memory-intensive apps
If you notice your computer slowing down

Practical Use Cases and Scenarios

Let's explore real-world scenarios where Flashback shines.

Scenario 1: The Missed Meeting Moment

The situation: You're in a long strategy meeting. Your mind wanders for just a moment, and you hear your boss say, "...and that's why we're going with Plan B. Any objections?"

Wait, what? What was Plan B? You missed the explanation!

Without Flashback:

You awkwardly ask them to repeat
Or you miss crucial context
Or you interrupt the flow

With Flashback:

You enabled Audio Flashback when you joined the meeting
The buffer has been quietly recording
You press Record immediately
SeaMeet captures the last 30 seconds (including the Plan B explanation)
You now have a recording of what you missed
You can review it after the meeting

Result: You captured the important moment even though you weren't paying attention when it happened!

Scenario 2: The Unexpected Customer Call

The situation: You're working when the phone rings. It's an angry customer with a complex problem. They start explaining the issue, but you're scrambling to open your case management system and find a pen.

By the time you're ready to take notes, they've already explained half the problem.

Without Flashback:

"Can you repeat that?"
Customer gets frustrated
You miss important details

With Flashback:

You have Audio Flashback always enabled during work hours
When the call comes in, press Record
Flashback captures the beginning of the call
You have the entire conversation recorded
You can focus on helping the customer instead of frantic note-taking

Result: Better customer service, accurate records, less stress.

Scenario 3: The Gaming Highlight

The situation: You're playing an intense game. You pull off an incredible combo—something you've never done before. Your friends are amazed. You want to save this moment.

But by the time you think to start recording, the moment has passed.

Without Flashback:

Try to recreate the moment (and fail)
Or just tell the story without proof
The highlight is lost

With Video Flashback:

You enable Video Flashback (30s or 60s) before playing
You play normally (Flashback is always buffering)
You hit the incredible combo
Immediately press Record
Flashback captures the gameplay leading up to the combo
You record the reaction and aftermath

Result: You have a video of the entire sequence, not just the aftermath!

Scenario 4: The Important Decision

The situation: You're in a video call with your lawyer discussing a contract. They say, "Now, this clause here is really important because..." and explain the implications.

You want to make absolutely sure you understand, and you want to reference this explanation later.

Without Flashback:

Try to take notes quickly
Miss nuances in the explanation
Can't review it later

With Flashback:

Enable Audio Flashback at the start of the call
When they get to the important part, press Record
Flashback captures the explanation from the beginning
You have the complete explanation recorded
Can review it later, share with your partner, etc.

Result: Complete, accurate record of important legal advice.

Scenario 5: The Webinar Wonder

The situation: You're watching an educational webinar. The presenter says something profound—an insight that perfectly solves a problem you've been struggling with.

You want to capture this wisdom, but the webinar is still going.

Without Flashback:

Try to remember it
Or take notes and hope you capture the nuance
Or stop listening while you try to start recording

With Flashback:

Enable Audio Flashback when webinar starts
When you hear the profound insight, press Record
Flashback captures the buildup and the insight itself
Continue listening to the webinar
Stop recording when you've captured what you need

Result: You have the key insight recorded, and you didn't miss the rest of the webinar!

Flashback Settings and Configuration

Let's explore all the Flashback settings and how to configure them optimally.

Accessing Flashback Settings

Method 1: Quick Toggle (Top Bar)

Click the Flashback button to cycle through modes
Fast for quick changes

Method 2: Settings Menu

Click ⚙️ Settings
Navigate to "Flashback" section
More detailed configuration options

Flashback Mode Options

Mode: OFF

No buffer running
No memory usage
Normal recording only

Mode: AUDIO_ONLY

30-second audio buffer
~30-50 MB RAM usage
Captures microphone and/or system audio
Good for meetings and calls

Mode: VIDEO_FULLSCREEN

10-120 second configurable buffer
50-600 MB RAM usage depending on duration
Captures screen video + audio
Good for visual content and gaming

Buffer Duration (Video Mode Only)

Available options:

10 seconds:

Uses ~50 MB RAM
Good for: Quick reactions, gaming highlights
Trade-off: Short window, but fills fast

30 seconds (Recommended):

Uses ~150 MB RAM
Good for: Most use cases, meetings, general use
Trade-off: Best balance of safety and memory

60 seconds:

Uses ~300 MB RAM
Good for: When you need more reaction time
Trade-off: Uses more memory, takes longer to fill

90 seconds:

Uses ~450 MB RAM
Good for: Extended safety window
Trade-off: Significant memory usage

120 seconds:

Uses ~600 MB RAM
Good for: Maximum protection
Trade-off: High memory usage, very long fill time

Which to choose:

Default/First time: 30 seconds
Limited RAM: 10 seconds
Gaming/Action: 30-60 seconds
Presentations/Slow-paced: 30 seconds
Maximum safety: 60-120 seconds (if you have RAM)

Auto-Start Buffer

Setting: "Auto-start Buffer" Options:

Off: You must manually enable Flashback each time
Audio: Automatically starts Audio Flashback when SeaMeet launches
Screen: Automatically starts Video Flashback when SeaMeet launches

When to use auto-start:

Use "Audio" if you use Flashback frequently for meetings
Use "Screen" if you often capture screen moments
Use "Off" if you want to control when it's active
Use "Off" if you're concerned about memory usage

Privacy consideration: With auto-start enabled, Flashback begins recording as soon as SeaMeet opens. Make sure this aligns with your privacy preferences.

Low-Memory Mode

Setting: "Low-Memory Mode" Toggle: On/Off

What it does:

Monitors available RAM
Automatically reduces video quality if memory runs low
Warns you if Flashback is using too much memory
Prevents system slowdowns

When to enable:

Computers with 8 GB RAM or less
When running multiple applications
If you notice performance issues
When using long buffer durations (60s+)

The Technical Magic (Simplified)

For the curious, here's a simplified explanation of how Flashback works technically.

The "Hijack" Pattern

When Flashback is enabled and you press Record, SeaMeet uses a clever technique:

Step 1: The Buffer

Flashback creates a MediaRecorder (the browser's recording engine)
It continuously records to a buffer in RAM
Old data is discarded, new data is added
The MediaRecorder runs the whole time

Step 2: When You Press Record Instead of starting a NEW recorder:

SeaMeet "hijacks" the existing one
It captures all the buffered chunks
It attaches these to the beginning of your new recording
It continues using the same MediaRecorder

Step 3: The Result You get a single continuous file:

Beginning: The buffered "past" content
Middle: The transition point (seamless)
End: Your new "present" recording

Why this is brilliant:

No file concatenation (no glitches at the join)
Same codec and settings throughout
Single WebM file with consistent headers
Works reliably in most players

The Phase 1 Limitation: Current implementation (Phase 1) has minor limitations:

Possible tiny timestamp jump at the merge point
Duplicate WebM headers (doesn't affect playback in most players)
These will be fixed in Phase 2 with webm-muxer library

Does it matter? For 90% of use cases, no. The files play perfectly in:

✓ VLC Media Player
✓ Chrome/Edge/Firefox
✓ Most modern players

Only very strict players might notice the minor discontinuities.

Troubleshooting Flashback Issues

"The buffer won't fill / stays at 0%"

Possible causes:

Flashback is disabled - Check that it's set to Audio or Video, not Off
No audio source - Make sure microphone or system audio is enabled
Memory issue - Computer may have insufficient RAM
Permission problem - Recording permissions not granted

Solutions:

Toggle Flashback off and back on
Check that audio is being detected (look for waveform activity)
Check available RAM
Restart SeaMeet
Check permissions in system settings

"Flashback button is grayed out / can't enable"

Possible causes:

Video mode conflicts - Already recording video
Resource limitations - Not enough RAM
Permissions - Missing screen recording permission

Solutions:

Stop any active recording first
Check available memory
Grant screen recording permissions (Mac: System Preferences)
Restart SeaMeet

"The recording doesn't include the buffer / missing the past"

Possible causes:

Pressed Record before buffer was ready - Wait for green/ready indicator
Buffer wasn't filling - Check Flashback was actually enabled
Switched modes - Changing from Audio to Video discards the buffer
Buffer too short - 10 seconds may not capture what you expected

Solutions:

Wait for buffer to show "Ready" or green color
Verify Flashback is enabled (not Off)
Use longer buffer duration
Don't switch modes while buffer is filling

"My computer is slow with Flashback enabled"

Possible causes:

Insufficient RAM - Video buffer using too much memory
Long buffer duration - 120s buffer on 8GB system
4K screen - High resolution uses more memory
Other apps - Too many programs running

Solutions:

Enable Low-Memory Mode
Reduce buffer duration (try 30s or 10s)
Lower video quality settings
Close other applications
Use Audio Flashback instead of Video

"Flashback stopped working after I switched modes"

This is normal! When you switch modes (Audio ↔ Video), SeaMeet discards the old buffer to prevent problems:

Audio and Video buffers are incompatible
You can't mix them in one file
The system starts fresh with a new buffer

Solution: Wait for the new buffer to fill (30-60 seconds) before relying on it.

"I see duplicate content / weird jump in the recording"

This is a known Phase 1 limitation.

The transition between buffered content and new recording can have:

Minor timestamp discontinuity
Tiny overlap or gap
Duplicate headers (invisible in playback)

Does it matter?

Most players handle it fine
VLC, Chrome, modern players: no problem
Only strict/old players might notice

Fixed in Phase 2: Future updates will use webm-muxer for perfect merging.

Best Practices for Flashback

General Tips

1. Enable Flashback Early

Turn it on when you start your work session
Let it fill while you're doing other things
Don't wait until you think you need it

2. Use Audio Flashback as Default

Lower memory usage
Good for most situations
Enable Video Flashback only when needed

3. Keep an Eye on the Indicator

Gray = Off (not recording)
Amber = Filling (not ready yet)
Green = Ready (can capture past)

4. Choose Buffer Duration Wisely

More isn't always better
30 seconds is the sweet spot for most users
Longer buffers = more memory = slower computer

5. Don't Rely on Flashback Alone

Flashback is for "catching" moments
For planned recordings, start recording normally
Use Flashback as a safety net, not your main strategy

Memory Management

If you have 8 GB RAM:

Stick with Audio Flashback (30s)
Or Video Flashback 10s
Enable Low-Memory Mode
Close browser tabs while recording

If you have 16 GB RAM:

Audio Flashback: any duration
Video Flashback: up to 60s comfortably
Can use other apps simultaneously

If you have 32 GB+ RAM:

Use any settings you want
Video Flashback up to 120s
No major concerns

Privacy Considerations

Flashback is always recording when enabled:

Remember it's capturing everything
Don't say/do things you wouldn't want recorded
Disable when not needed
Files are stored locally (not cloud)

Auto-start considerations:

With auto-start, recording begins immediately
Make sure this aligns with your privacy needs
Good for work computers
Consider manual start for personal use

Comparing Flashback to Cloud Recording Bots

You might wonder: "How is this different from Otter.ai, Fireflies, or other meeting recording tools?"

Cloud Recording Bots (Otter, Fireflies, etc.)

How they work:

Join your meeting as a participant
Record the meeting from "inside"
Upload to cloud for transcription
Start recording when they join

Limitations:

❌ Can only record from when they join
❌ Can't capture the first few minutes if you forget to invite them
❌ Requires internet connection
❌ Audio quality depends on meeting audio
❌ Privacy concerns (data goes to cloud)
❌ Monthly subscription fees

SeaMeet Flashback

How it works:

Records locally on your computer
Continuously buffers in the background
Captures moments from before you started
Combines past + present seamlessly

Advantages:

✅ Can capture moments before you press record
✅ Works offline (no internet needed)
✅ Direct audio source (higher quality)
✅ Local only (complete privacy)
✅ No subscription fees
✅ Captures both sides of conversation perfectly

The key difference: Cloud bots are like a guest arriving late to a party—they can only see what's happening after they arrive.

Flashback is like having a security camera always running—you can look back at what happened before you decided to check the footage.

Summary: Why Flashback is Revolutionary

Flashback solves a fundamental problem in recording: You can't know in advance what moments will be important.

Traditional recording:

Requires planning ahead
You must start recording BEFORE the moment
Misses spontaneous, unexpected moments

Flashback recording:

No planning required
Captures moments AFTER they happen
Always ready for the unexpected
Never miss an important moment again

It's the difference between:

"I wish I had recorded that"
"I'm glad I captured that"

Quick Start Guide

┌─────────────────────────────────────────────────────────────┐
│              FLASHBACK QUICK START                          │
├─────────────────────────────────────────────────────────────┤
│                                                             │
│  1. ENABLE FLASHBACK                                        │
│     • Click ⏪ button in top bar, OR                        │
│     • Go to Settings → Flashback                            │
│     • Choose: OFF / AUDIO / VIDEO                           │
│                                                             │
│  2. WAIT FOR READY                                          │
│     • Amber = Filling (wait ~27 seconds)                    │
│     • Green = Ready (can capture past)                      │
│                                                             │
│  3. WHEN SOMETHING IMPORTANT HAPPENS                        │
│     • Press Record 🔴                                        │
│     • Flashback grabs the buffer (past)                     │
│     • Continues recording (present)                         │
│                                                             │
│  4. STOP WHEN DONE                                          │
│     • Press Stop ⏹️                                          │
│     • File contains: Past + Present seamlessly              │
│                                                             │
│  MEMORY USAGE:                                              │
│  • Audio (30s): ~30-50 MB RAM                               │
│  • Video (30s): ~150 MB RAM                                 │
│  • Video (10s): ~50 MB RAM                                  │
│  • Video (120s): ~600 MB RAM                                │
│                                                             │
│  RECOMMENDED:                                               │
│  • Start with Audio Flashback (30s)                         │
│  • Use Video Flashback for visual content                   │
│  • 30-second buffer is best for most users                  │
│                                                             │
└─────────────────────────────────────────────────────────────┘

Last updated: 2026-02-01 Part of the SeaMeet User Manual Previous: Chapter 5 - Understanding File Formats Next: Chapter 7 - Auto-Detection