DV vs FLV
A detailed comparison of Digital Video and Flash Video — file size, quality, compatibility, and which format to choose for your workflow.
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Technical Specifications
| Specification | .DV | .FLV |
|---|---|---|
| MIME type | video/dv | video/x-flv |
| Extensions | .dv, .dif | .flv, .f4v |
| Standard | IEC 61834 (consumer DV); SMPTE 314M (DVCPRO) | — |
| Bitrate | 25 Mbps (DV); 50 Mbps (DVCPRO50); 100 Mbps (DVCPRO HD) | — |
| Native interface | IEEE 1394 FireWire | — |
| Video codecs | — | Sorenson Spark, VP6, H.264 (F4V) |
| Audio codecs | — | MP3, Nellymoser, AAC |
| Status | — | Deprecated since December 31, 2020 |
Strengths Comparison
.DV Strengths
- Lossless capture from tape via FireWire.
- Each frame compressed independently — editing without intermediate transcoding.
- Universal support in every pre-2010 NLE.
- Fixed 25 Mbps bitrate — predictable storage and edit performance.
.FLV Strengths
- Low overhead — the container is extremely compact.
- Designed for streaming — progressive download and seeking work well.
- Decoded natively by Flash Player on every OS for 20 years.
Limitations
.DV — Limitations
- Legacy — camcorders and tape decks are out of production.
- Large files vs modern codecs (13 GB per hour).
- Interlaced video requires deinterlacing for modern displays.
- FireWire ports disappeared from PCs around 2012 — archive-capture is a specialty now.
.FLV — Limitations
- Flash Player is dead — no modern browser can play FLV without conversion.
- Legacy codecs (Sorenson, VP6) are poorly supported in modern tooling.
- Hardware video decoders never added FLV support.
- Metadata format is primitive compared to MP4 or MKV.
- Actively harmful to use today — every major security agency has warned against Flash since 2015.
Frequently Asked Questions
DV (Digital Video) 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 DV wrapper. It is part of the video files family.
FLV (Flash Video) 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 FLV wrapper. It is part of the video files family.
VLC, MPV and PotPlayer play nearly every DV file on desktop. Browser support varies: modern Chromium, Firefox and Safari play common containers via the HTML5 <video> tag, but niche DV variants may fail. If a device refuses your DV, convert to MP4 with our DV to MP4 converter for universal playback.
VLC, MPV and PotPlayer play nearly every FLV file on desktop. Browser support varies: modern Chromium, Firefox and Safari play common containers via the HTML5 <video> tag, but niche FLV variants may fail. If a device refuses your FLV, convert to MP4 with our FLV to MP4 converter for universal playback.
Upload your DV 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 DV 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.
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