What is a .F4M file?
F4M described Adobe HTTP Dynamic Streaming, now largely retired with Flash.
- Did you know
- F4M powered Adobe’s HDS streaming before HLS and DASH took over.
- An F4M manifest lists the codecs, resolutions and multi-bitrate streams available for a piece of HTTP Dynamic Streaming media.
- HDS playback driven by the F4M pulls down small .f4f segments, each only a few seconds long.
- What Analyser reads
- Inspect streaming manifests and video containers: HLS/DASH/Smooth Streaming/HDS manifests and playlists; pro/broadcast MXF/GXF/LXF/DV; ASF/.dvr-ms and RealMedia; DivX/F4V/Insta360/GoPro proxies/GIFV; raw elementary streams (IVF, Y4M, MPEG-1/2, H.264/H.265 SPS, AV1 OBU); MPEG program/transport and PVR/DVB recordings; Windows Recorded TV, Ogg Media, NUT; DPX/Cineon/Dahua/.yuv identified.
- Depth of analysis
- .F4M is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .F4M file
- Drag a .F4M file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.