# VideoIO, PCM Mixing And Timed Whisper Captions

DevFeed: [VideoIO, PCM Mixing And Timed Whisper Captions](<https://devfeed.tech/articles/videoio-pcm-mixing-and-timed-whisper-captions-19662.md>)

Original publisher: [Read original article](<https://www.codenameone.com/blog/videoio-audio-mixer-whisper/>)

Author: Shai Almog

Published: 2026-07-08T00:00:00Z

Content type: release

Language: en

Sources: [CodeName One](<https://devfeed.tech/sources/codename-one.md>)

Topics: [API](<https://devfeed.tech/topics/api.md>), [Whisper](<https://devfeed.tech/topics/whisper.md>), [cross-platform](<https://devfeed.tech/topics/cross-platform.md>)

Tags: [api](<https://devfeed.tech/tags/api.md>), [audio](<https://devfeed.tech/tags/audio.md>), [cross-platform](<https://devfeed.tech/tags/cross-platform.md>), [encoding](<https://devfeed.tech/tags/encoding.md>), [playback](<https://devfeed.tech/tags/playback.md>), [release](<https://devfeed.tech/tags/release.md>), [transcription](<https://devfeed.tech/tags/transcription.md>), [video](<https://devfeed.tech/tags/video.md>), [whisper](<https://devfeed.tech/tags/whisper.md>)

## AI overview

Codename One's release adds cross-platform video encoding and decoding, sample-accurate PCM mixing, and timed Whisper transcription segments with SRT and VTT subtitle output. It can encode app-rendered frames, decode exact frames and audio where supported, and package native integrations across several platforms.

## Source excerpt

Codename One can now generate and inspect real video: encode app-rendered frames, decode exact frames, mix PCM, and turn Whisper timestamps into subtitles.