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H264 vs PNG

H264 vs PNG

A detailed comparison of H.264 Raw Stream and PNG Image — file size, quality, compatibility, and which format to choose for your workflow.

Convert H264 → PNG
H264

H.264 Raw Stream

Video Files

H.264 raw stream is an elementary bitstream containing only the video data encoded with the H.264/AVC codec without any container. It is commonly used as an intermediate format in video processing pipelines and for hardware encoder output.

About H264 files
PNG

PNG Image

Raster & Vector Images

PNG is a lossless image format that supports transparency. It is ideal for graphics, logos, screenshots, and any image where preserving exact pixel data is important.

About PNG files

Strengths Comparison

H264 Strengths

  • Universal hardware decode on every device since ~2010.
  • 40-50% smaller than MPEG-2 at equal quality.
  • Mature ecosystem with dozens of encoders (x264 is the open-source gold standard).
  • Every browser, phone, TV, and car infotainment supports H.264.
  • Supports everything from 144p vertical phone video to 8K HDR masters.

PNG Strengths

  • Lossless compression — every save preserves the original pixels perfectly.
  • Full 8-bit alpha channel for smooth transparency.
  • Excellent for text, UI screenshots, logos, and line art.
  • Royalty-free and an ISO standard (ISO/IEC 15948).
  • Supports 16-bit color depth for high-fidelity work.

Limitations

H264 Limitations

  • Patent-encumbered — encoding royalties apply for commercial use.
  • 30-50% larger than H.265/AV1 at equivalent quality.
  • Raw .h264 bytestreams have no timecode — containers (MP4/MKV) add that.
  • High profiles decode slowly on pre-2010 hardware.

PNG Limitations

  • Much larger than JPEG for photographs (no perceptual compression).
  • No native animation in most software (APNG support is inconsistent).
  • No CMYK support — web and screen only, not print.
  • Metadata capabilities are less rich than JPEG's EXIF.

Technical Specifications

Specification H264 PNG
MIME type video/h264 image/png
Extensions .h264, .264, .avc (raw bytestream) —
Standard ITU-T Rec. H.264 / ISO/IEC 14496-10 (AVC) ISO/IEC 15948:2004
Typical containers MP4, MKV, MOV, TS, FLV —
Profiles Baseline, Main, High, High 10, High 4:2:2, High 4:4:4 —
Compression — Lossless — DEFLATE (zlib)
Color depth — 1, 2, 4, 8 or 16 bits per channel
Max dimensions — 2^31 − 1 pixels per side (2.1 billion)
Transparency — Full 8-bit alpha channel

Typical File Sizes

H264

  • 1080p 30fps @ 5 Mbps (1 min) ~37 MB
  • 4K 60fps @ 35 Mbps (1 min) ~260 MB
  • HD streaming (1 hour, 6 Mbps) ~2.7 GB

PNG

  • Icon or small logo 2–20 KB
  • UI screenshot (1920×1080) 200–800 KB
  • High-res photo (12 MP) 10–30 MB
  • Print-ready illustration 5–50 MB

Ready to convert?

Convert between H264 and PNG online, free, and without installing anything. Encrypted upload, automatic deletion after 2 hours.

Convert H264 to PNG

Frequently Asked Questions

H264 (H.264 Raw Stream) is a video container format that bundles one or more video streams, audio tracks, and optional subtitles into a single file. The container format determines how metadata is organised and which codecs can live inside; the visual quality itself depends on the codec (H.264, H.265, VP9, AV1) rather than the H264 wrapper. It is part of the video files family.

PNG (Portable Network Graphics) is a lossless raster image format created in 1996 as a patent-free alternative to GIF. It supports transparency, making it ideal for logos, icons, and web graphics.

VLC, MPV and PotPlayer play nearly every H264 file on desktop. Browser support varies: modern Chromium, Firefox and Safari play common containers via the HTML5 <video> tag, but niche H264 variants may fail. If a device refuses your H264, convert to MP4 with our H264 to MP4 converter for universal playback.

PNG files open natively in all modern operating systems, web browsers, and image editors including Photoshop, GIMP, Paint.NET, and Canva.

Upload your H264 to KaijuConverter and pick MP4, MOV, MKV, WebM, or any other target. Our pipeline uses FFmpeg under the hood and stream-copies when codecs are compatible (no quality loss) or transcodes at high-quality defaults otherwise. Conversion runs server-side; both files delete within two hours.

Only when the target requires re-encoding. If the codecs inside H264 match what the target container supports, FFmpeg stream-copies the streams and the output is bit-identical to the source. Transcoding uses transparent quality defaults (CRF 20–23 H.264) and produces output indistinguishable from the original at normal viewing distance.