Quick answer: An hour of mono WAV at 24-bit 48 kHz is about 520 MB per speaker, and a video podcast is several GB per camera. Send guests a file request link from Share Large Video Files so they upload their local recording without an account; send the multitrack to your editor with one link (up to 20 GB); and share the finished MP3 or video for review with Client review.
Files podcasters send, and how big they get
| File | Format | Typical size |
|---|---|---|
| 1 hour mono WAV, 24-bit 48 kHz (one speaker) | WAV | about 520 MB |
| 1 hour stereo WAV, 24-bit 48 kHz | WAV | about 1 GB |
| Finished episode, 1 hour MP3 at 128 kbps | MP3 | about 58 MB |
| Video podcast, 1 hour 4K phone camera | MP4, MOV | about 10 GB per camera |
| Video podcast, 1 hour 4K camera at 100 Mbps | MP4 | about 44 GB per camera |
Audio: 48,000 samples × 3 bytes × 3,600 s = 518 MB for one mono hour. MP3: 128 kbps × 3,600 s ÷ 8 = 57.6 MB.
Can it go by email or chat?
Can you send an hour of one speaker's WAV (about 518 MB) as an attachment?
| App | Limit | Fits? |
|---|---|---|
| Gmail | 25 MB per email | No, send a link |
| Outlook.com | 20 to 25 MB per email | No, send a link |
| WhatsApp (document) | 2 GB per file | Yes |
| Telegram | 2 GB per file | Yes |
| Facebook Messenger | 100 MB per file | No, send a link |
| Discord (free) | 20 MB per file | No, send a link |
| Slack | 1 GB per file | Yes |
| WeTransfer (free) | 3 GB per transfer | Yes |
| Share Large Video Files | 20 GB per transfer | Send the link anywhere |
Limits from our file size limits by app table, checked against each service's help pages.
A workflow that works
- Before recording, create a Request files link and send it to the guest with a note: record locally in WAV, keep recording until you say stop.
- After the call, the guest opens the link and uploads the file, no account needed. It arrives with you as a normal transfer.
- Send all tracks to your editor in one zipped transfer, with Email me when it's downloaded on.
- The editor sends the cut back with Client review; for video podcasts you comment at the exact second.
Recommended options
| Option (under More options) | Setting | Why |
|---|---|---|
| Request files | One link per episode | Guests upload recordings without an account |
| Email me when it's downloaded | On | Know the editor has the tracks |
| Client review | On for edits | Timed notes on video cuts, and an approval |
| Available from | Release time (press or Patreon early access) | Episode opens at the announced time |
Set these once, press Save current next to Preset, and reuse the same options for every episode with one tap.
Local recordings in sync
Ask every speaker to start recording before the call starts and clap once at the beginning: the clap lines the tracks up in the edit. Keep recordings in WAV until the final mix; export MP3 only for publishing.
Frequently asked questions
How do I get my guest's recording?
Send them a file request link. They upload the file after the call, with no account, and it arrives with you in full quality.
How big is an hour of podcast audio?
About 520 MB as 24-bit 48 kHz mono WAV per speaker, and about 58 MB as a 128 kbps MP3.
Can I send video podcast files?
Yes, up to 20 GB per transfer. An hour of 4K is about 10 GB from a phone and more from a camera, so upload on a fast connection.
Should I send MP3 to my editor?
No. Send WAV; MP3 is lossy and each re-encode loses quality. MP3 is for the published episode.
Ready to send?
Drop your files, get a link, done. Free up to 20 GB — no account needed.
Send files free