Bước 1: Nhập MP4 Tập tin bằng cách dùng nút trên hoặc bằng cách nhấn Shift và giữ.
Bước 2: Nhấn nút 'Transform' để bắt đầu quá trình biến đổi.
Bước 3: Chụp ảnh PNG các tập tin
MP4 đến PNG Câu hỏi thường gặp về chuyển đổi
How do I extract frames from a MP4 video as PNG images?
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Upload the MP4 file and the converter exposes a frame-extraction picker: every Nth frame, frames at specific timestamps, or one frame per second. Each chosen frame is encoded as a separate PNG file and bundled as a ZIP for download.
At what resolution does the extracted PNG image come out?
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Same resolution as the MP4 video — a 1080p source produces 1920×1080 PNG frames; a 4K source produces 3840×2160 PNG frames. Resize after extraction if you need smaller thumbnails.
Can I extract every frame from a MP4 file as PNG?
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Yes, but be careful with file count — a 30fps 1-minute video produces 1,800 frames. We pack them into a ZIP archive automatically. For longer clips use the "1 per second" option (60 frames) or specific timestamps.
Will the PNG images preserve the MP4 color grading?
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Yes — colour is decoded with the same matrix the source MP4 uses (BT.709 for HD, BT.2020 for 4K HDR). HDR sources are tone-mapped to SDR when extracting to PNG (PNG / JPG can't store HDR pixel ranges natively).
What is the file size of one extracted PNG frame?
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Depends on resolution and codec choice. A 1080p PNG frame is 2-5 MB; a 1080p JPG quality-85 frame is 200-500 KB. Multiply by frame count to size the ZIP — at the extreme, every-frame extraction of a 10-min 1080p video at PNG is ~50 GB.
Does the extracted PNG keep camera EXIF metadata?
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The MP4 container does not store per-frame EXIF the way a still camera does, so the PNG files come out with empty EXIF. We embed a `creation_time` field pointing at the source frame timestamp so you can re-sort the bundle.
How long does frame extraction from MP4 to PNG take?
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Frame extraction is fast — typically 20-30% of source duration on the standard pipeline. A 5-minute MP4 → PNG bundle finishes in about 1 minute regardless of frame count, because the bottleneck is the PNG encoder, not the demuxer.
Can I extract frames at specific timestamps in the MP4 video?
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Yes — the advanced option accepts a comma-separated list of timestamps (e.g. `00:01:23,00:05:00,00:10:42`) and produces one PNG file per timestamp. Useful for chapter thumbnails or scene reference shots.
Is my MP4 video private during frame extraction?
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Yes — same privacy model as every conversion. Source video and extracted frames are processed in isolated workers and deleted within minutes.
Why are my extracted PNG frames blurry?
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Almost always motion blur from the source MP4 (the camera was moving when the frame was captured). Try picking timestamps from static scenes, or extract several adjacent frames and choose the sharpest. The pipeline does not synthesize sharpness.
Does this tool support extracting one frame per scene change?
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Not in the basic flow — use the "1 per second" option as an approximation, then visually pick scene-change frames. A dedicated scene-detection extractor is on the roadmap.
Can I use the extracted PNG frames commercially?
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Yes, subject to whatever licence governs the source MP4 content. The format change adds no claim — we add no watermark and claim no licence on the PNG output.