# FFmpeg: what changed from 8 to 9

- Product: FFmpeg (https://whatsnew.fyi/product/ffmpeg)
- Vendor: FFmpeg
- Range: changelog entries numbered after 8.1.2 up to and including 9.0.1, stable releases only
- Entries below: 2 releases (newest first)
- Resolved: 8 is 8.1.2 and 9 is 9.0.1, the newest stable release of each major we track
- Carrying security changes: 0 · CVEs mentioned: 0 · Mentioning breaking changes: 0 · Removing or deprecating something: 0
- Page: https://whatsnew.fyi/product/ffmpeg/compare/8...9

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

## What changed (11 changes, grouped by kind)

### Fixed

#### 9.0.1 (2026-08-12) — summarized from commit messages

- Line boundary checks for >8 bits content in avfilter/vf_bwdif.
- Printf specifier in avformat/shared.
- Missing padding bits handling in avcodec/cbs_lcevc.
- Overflow in swscale fast bilinear edge handling.
- Named input channel validation in avfilter/af_pan.
- Error recovery in avcodec/dolby_e when parse_mantissas runs out of bits.
- Zero-channel track rejection in avformat/scd.
- Buffer size handling in avformat/librist.
- Stream count and system header buffer size validation in avformat/mpegenc.
- HVC NAL array count overflow rejection in avformat/hevc, negative fragment index rejection in avformat/dashdec, RTP payload buffer overflow rejection in avformat/rtpenc_vc2hq, OBU size handling in avformat/rtpenc_av1, CRLF injection in avformat/gopher, ICCP and EXIF chunk reading in avformat/webp_anim_dec, crossfade bounding in avfilter/afir, pixel format negotiation in avfilter/spectrumsynth, PES payload size management in avformat/mpegts, LJ92 packet boundary handling in avformat/mlv, and multithread chunk decoding in avcodec/lcldec.
- Pixel format negotiation in avfilter/spectrumsynth for both inputs.

_One release carries no categorized changes yet: 9.0._

## Release notes

### 9.0.1 — n9.0.1

- Date: 2026-08-12
- Version: 9.0.1
- Original notes: https://github.com/FFmpeg/FFmpeg/releases/tag/n9.0.1
- Permalink: https://whatsnew.fyi/product/ffmpeg/releases/9.0.1
- Labels: Machine-generated from commit messages — the vendor published no release notes

- **fixed** — Line boundary checks for >8 bits content in avfilter/vf_bwdif.
- **fixed** — Printf specifier in avformat/shared.
- **fixed** — Missing padding bits handling in avcodec/cbs_lcevc.
- **fixed** — Overflow in swscale fast bilinear edge handling.
- **fixed** — Named input channel validation in avfilter/af_pan.
- **fixed** — Error recovery in avcodec/dolby_e when parse_mantissas runs out of bits.
- **fixed** — Zero-channel track rejection in avformat/scd.
- **fixed** — Buffer size handling in avformat/librist.
- **fixed** — Stream count and system header buffer size validation in avformat/mpegenc.
- **fixed** — HVC NAL array count overflow rejection in avformat/hevc, negative fragment index rejection in avformat/dashdec, RTP payload buffer overflow rejection in avformat/rtpenc_vc2hq, OBU size handling in avformat/rtpenc_av1, CRLF injection in avformat/gopher, ICCP and EXIF chunk reading in avformat/webp_anim_dec, crossfade bounding in avfilter/afir, pixel format negotiation in avfilter/spectrumsynth, PES payload size management in avformat/mpegts, LJ92 packet boundary handling in avformat/mlv, and multithread chunk decoding in avcodec/lcldec.
- **fixed** — Pixel format negotiation in avfilter/spectrumsynth for both inputs.

### 9.0 — n9.0

- Date: 2026-08-03
- Version: 9.0
- Original notes: https://github.com/FFmpeg/FFmpeg/releases/tag/n9.0
- Permalink: https://whatsnew.fyi/product/ffmpeg/releases/9.0