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Supports: WMV
.wmv clip. Batch uploads are supported — extract frames from several videos in one pass.2.100 for 2.1 seconds in) to grab one sharp still, or switch to Multiple Screenshots to sample a sequence at fixed intervals.Windows Media Video (WMV) is Microsoft's family of ASF-container video codecs — WMV 7 shipped in 1999, WMV 9 added interlaced and high-precision modes in 2003, and the WMV 9 Advanced Profile was standardized as SMPTE 421M (VC-1) in 2006. Playback support outside the Microsoft ecosystem has eroded for years: QuickTime dropped native WMV with the PowerPC-era plugin, Telestream's Flip4Mac was discontinued on 1 July 2019, and no major browser plays WMV natively. Pulling stills out as PNG is often the simplest way to preserve a frame for documents, slides, or design work that needs to outlive the source clip.
.wmv. Convert a representative frame to PNG before the clip is locked behind a player you no longer have..wmv directly into OpenCV or PIL.| Property | WMV (Windows Media Video) | PNG (Portable Network Graphics) |
|---|---|---|
| Type | Video container + codec | Still image |
| Standard | SMPTE 421M / VC-1 (WMV 9 AP, 2006) | ISO/IEC 15948:2004 |
| Container | ASF (.wmv, .asf) |
Single-image stream |
| Compression | Lossy (block-based DCT, motion-compensated) | Lossless (DEFLATE) |
| Color | 8-bit 4:2:0 (WMV 9 baseline) | 1–16 bits per channel, RGB / RGBA / grayscale / indexed |
| Transparency | None | Full 8-bit alpha channel |
| Browser playback | None native (Chrome, Firefox, Safari, Edge) | Universal — every browser since the late 1990s |
| Typical use | Streaming, camcorder recordings, Windows screen capture | UI assets, screenshots, print stills, design |
| Editability | Re-encoding loses quality each generation | Re-saving never degrades pixel data |
| Mode | Output | When to use | Tip |
|---|---|---|---|
| Specific Frame | One PNG at a chosen timestamp | Pulling a hero still, thumbnail, or evidence frame | Type the time as seconds.milliseconds (e.g., 12.500 = 12.5 s) |
| Multiple Screenshots — every N seconds | One PNG per interval | Storyboards, contact sheets, slow-changing footage | 1 frame / 5 s keeps a 5-minute clip under ~60 stills |
| Multiple Screenshots — fixed FPS | Dense sequence at chosen frame rate | Rotoscoping, ML datasets, motion studies | 24 FPS matches cinema; 30 FPS matches WMV defaults |
| Single mid-clip frame | One PNG at the midpoint | Quick preview / poster image | Use when you just need any representative frame |
The PNG is lossless — once a frame is decoded from WMV to RGB, PNG stores it bit-for-bit. The only quality loss happens during the original WMV encode (WMV is lossy, 8-bit 4:2:0), so any blocking, color banding, or chroma smearing already baked into the .wmv will be visible in the PNG. You're locking in the source quality, not improving it.
Switch to Specific Frame and type the timestamp into Time (seconds) using a decimal — 4.250 means 4 seconds and 250 milliseconds. If you only need a poster image, leave it at 0 for the first frame. For a precise frame index, divide the frame number by the clip's frame rate (frame 90 on a 30 fps clip = 3.000).
WMV is lossy and inter-frame compressed — it stores most frames as small deltas against neighbors. PNG is lossless and intra-frame, so a single 1080p PNG can easily be 1–3 MB while a heavily compressed 10-second 1080p WMV might be only 2 MB total. If size matters more than fidelity, try Convert WMV to JPG instead, or drop the Colors setting to 256 for sharp-but-flat content like UI captures.
Yes — use Multiple Screenshots and match the FPS to the clip's frame rate. A 30 fps clip with FPS set to 30 produces one PNG per source frame. Be aware that a one-minute 1080p clip yields 1,800 PNG files, often several gigabytes total — start with a shorter trim or a lower FPS for a first pass.
No. WMV has no alpha channel — only WMV 9 Image (a niche photo slideshow variant) carries any per-pixel transparency, and even that isn't a true 8-bit alpha. Standard .wmv clips decode to opaque RGB, so the PNG will be fully opaque. If you need a transparent background, you'll have to mask it after extraction in Photoshop, GIMP, or Photopea.
Match or slightly exceed the source resolution. Most WMV files are 480p, 720p, or 1080p — picking a Preset Resolution larger than the source just upscales pixels without adding detail. For web use 720P or 1080P; for slide decks 1080P is safe; for thumbnails 480P or even 240P keeps file size small. Use Resolution Percentage at 100% to preserve the original.
WMV doesn't guarantee a fixed presentation timestamp at every frame index — variable frame rate clips, B-frames, and ASF index quirks make timestamp-based seeking far more reliable than frame-number seeking. Entering seconds works on any WMV regardless of frame rate or how the file was encoded.
If you want a playable video, PNG is the wrong target — modern browsers and players don't read PNG as video. Use Convert WMV to MP4 for an H.264 file that plays in every browser and OS, or Convert WMV to GIF for a short looping animation. PNG sequences are useful as an input to After Effects, DaVinci Resolve, or Blender — not as a delivery format.
For very large WMV files, extracting a single Specific Frame is far lighter than dumping the full sequence — processing happens on our servers, so memory matters. If you hit a limit, trim the clip first or reduce Resolution Percentage before running Multiple Screenshots.