Transcribe MP4 video — any codec, any source
MP4 is a container, not a codec. Whether your file uses H.264, HEVC, VP9, or AV1 for video and AAC, Opus, or PCM for audio, we extract the right audio track and transcribe it accurately.
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.mp4·fino a 500MB
MP4 is a container — what's inside it matters
An MP4 file is a container that can hold video encoded with H.264, H.265/HEVC, VP9, or AV1, and audio encoded with AAC, Opus, AC-3, or even uncompressed PCM. It can contain multiple audio tracks, embedded subtitles, and chapter markers. Vocova reads the MP4 container structure, selects the primary audio track, and transcribes it — regardless of what codecs were used for the video or audio streams.
Come funziona
Carica il tuo file MP4
Drag and drop any MP4 file. We parse the container to identify audio tracks — no need to know what codec was used to create the file.
- Any video codec: H.264, H.265/HEVC, VP9, AV1
- Any audio codec: AAC, Opus, AC-3, PCM
- Files up to 500 MB supported
Audio extraction and transcription
We extract the primary audio track from the MP4 container and run speech recognition. The video track is never decoded — it's the audio that matters for transcription.
- Primary audio track automatically selected
- Speaker diarization for multi-person recordings
- 100+ languages with automatic detection
Export your transcript
Review the transcript, edit names or technical terms, and export in your preferred format. SRT and VTT exports include timestamps synced to the video timeline.
- Esporta come TXT, SRT, VTT, DOCX o PDF
- SRT/VTT timestamps match the video for subtitling
- Edit text directly before downloading
Funzionalità
Container-aware processing
MP4 is a container format, not an encoding. We parse the MP4 atom structure to find audio tracks, read their codec metadata, and decode correctly — whether the audio is AAC-LC, HE-AAC, Opus, AC-3, or raw PCM.
Multiple audio track handling
Some MP4 files contain multiple audio tracks: different languages, a separate commentary track, or a mix-minus version. We select the primary track by default. If your file has multiple tracks, the default (first) track is transcribed.
Screen recording optimization
Screen recordings from OBS, macOS, and Windows often have system audio mixed with microphone input, sometimes at mismatched levels. Our speech model separates voice from system sounds (notification chimes, UI clicks, music) and focuses on the spoken content.
Zoom and meeting recording handling
Zoom's local recordings re-encode audio at a lower bitrate than the original call, and cloud recordings compress even further. This double compression degrades audio quality noticeably. Our model is trained on this kind of degraded conferencing audio.
Video codec is irrelevant
Whether your MP4 uses H.264 from 2004 or AV1 from 2024 makes no difference to transcription. We never decode the video track. A 4K ProRes MP4 and a 360p H.264 MP4 with identical audio will produce identical transcripts.
Perché scegliere Vocova
Subtitle any video without an editor
Upload your MP4, get an SRT or VTT file with timestamps already synced to the video timeline. Import it into Premiere Pro, Final Cut, DaVinci Resolve, or upload it directly to YouTube alongside the video.
Transcribe meeting recordings from any platform
Zoom, Teams, Google Meet, and Webex all export MP4 recordings. Upload them directly — even Zoom's double-compressed local recordings produce accurate transcripts because our model handles conferencing audio quality.
Extract dialogue from camera footage
DSLR and mirrorless camera footage saved as MP4 typically has high-quality audio from external microphones. Transcribe interviews, documentary footage, or event recordings without manual effort.
Turn screen recordings into documentation
Screen recordings of tutorials, demos, and presentations become written guides. System audio is filtered out so only the narrator's voice is transcribed, not button clicks or notification sounds.
Chi può trarne vantaggio
Video editors and post-production teams
Generate subtitle files from raw MP4 footage for Premiere Pro, Final Cut, or DaVinci Resolve. Skip manual subtitle entry and import AI-generated SRT files directly into your timeline.
Remote teams with meeting recordings
Convert Zoom, Teams, or Meet MP4 recordings into searchable meeting notes with speaker labels. Find who said what without scrubbing through hour-long recordings.
YouTubers and content creators
Generate accurate captions from your MP4 uploads. YouTube auto-captions are often wrong — replace them with properly timed SRT files from the actual audio.
Educators recording screen tutorials
Transcribe screen recording MP4 files into written tutorials and course materials. The transcript becomes the basis for documentation that complements the video.
Domande frequenti
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Generatore di sottotitoli
Carica audio o video e ottieni file di sottotitoli pronti all'uso
Generatore SRT
Generate spec-compliant SRT subtitles with proper formatting
Generatore VTT
Generate WebVTT subtitles for HTML5 video and HLS streaming
Inizia a trascrivere gratuitamente
Carica un file o incolla un link da YouTube, TikTok e 1.000+ piattaforme — ottieni una trascrizione accurata in pochi minuti. Nessuna carta di credito richiesta.