# srs v6.0-b0 — Release v6.0-b0

- Product: srs (https://whatsnew.fyi/product/srs)
- Vendor: ossrs
- Date: 2025-08-12
- Version: v6.0-b0
- Original notes: https://github.com/ossrs/srs/releases/tag/v6.0-b0
- Permalink: https://whatsnew.fyi/product/srs/releases/v6.0-b0

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'.

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- **fixed** — Fix audio/video synchronization issues in WebRTC recordings for MP4 DVR
- **fixed** — Fix heap-use-after-free crash during stream unmount in HTTP-FLV
- **added** — Allow Forward to be configured with environment variables
- **fixed** — Fix H.264 B-frame detection logic to comply with specification
- **fixed** — Fix loop transcoding bug
- **fixed** — Use extended timestamp as delta when chunk fmt=1/2 in RTMP

If you would like to support SRS, please consider contributing to our [OpenCollective](https://opencollective.com/srs-server).

* v6.0, 2025-08-12, Merge [#4230](https://github.com/ossrs/srs/pull/4230): MP4 DVR: Fix audio/video synchronization issues in WebRTC recordings. v6.0.172 (#4230)
* v6.0, 2025-08-11, Merge [#4432](https://github.com/ossrs/srs/pull/4432): AI: HTTP-FLV: Fix heap-use-after-free crash during stream unmount. v6.0.171 (#4432)
* v6.0, 2025-07-28, Merge [#4245](https://github.com/ossrs/srs/pull/4245): Allow Forward to be configured with Env Var. v6.0.170 (#4245)
* v6.0, 2025-07-10, Merge [#4414](https://github.com/ossrs/srs/pull/4414): Fix H.264 B-frame detection logic to comply with specification. v6.0.169 (#4414)
* v6.0, 2025-06-04, Merge [#4325](https://github.com/ossrs/srs/pull/4325): fix bug: loop transcoding #3516. v6.0.168 (#4325)
* v6.0, 2025-05-29, Merge [#4356](https://github.com/ossrs/srs/pull/4356): RTMP: Use extended timestamp as delta when chunk fmt=1/2. v6.0.167 (#4356)

##### Resource
* Source: 1e818c5c0183fb5f1069476e27222391 [srs-server-6.0-b0.tar.gz](https://github.com/ossrs/srs/releases/download/v6.0-b0/srs-server-6.0-b0.tar.gz)
* Binary: 06d4520b211af9346e4b63d9e3e2441d [SRS-CentOS7-x86_64-6.0-b0.zip](https://github.com/ossrs/srs/releases/download/v6.0-b0/SRS-CentOS7-x86_64-6.0-b0.zip)
* Binary: 881d4501b667b5b67c7164d50b66798b [SRS-Windows-x86_64-6.0-b0-setup.exe](https://github.com/ossrs/srs/releases/download/v6.0-b0/SRS-Windows-x86_64-6.0-b0-setup.exe)

##### Resource Mirror: gitee.com
* Source: 1e818c5c0183fb5f1069476e27222391 [srs-server-6.0-b0.tar.gz](https://gitee.com/ossrs/srs/releases/download/v6.0-b0/srs-server-6.0-b0.tar.gz)
* Binary: 06d4520b211af9346e4b63d9e3e2441d [SRS-CentOS7-x86_64-6.0-b0.zip](https://gitee.com/ossrs/srs/releases/download/v6.0-b0/SRS-CentOS7-x86_64-6.0-b0.zip)
* Binary: 881d4501b667b5b67c7164d50b66798b [SRS-Windows-x86_64-6.0-b0-setup.exe](https://gitee.com/ossrs/srs/releases/download/v6.0-b0/SRS-Windows-x86_64-6.0-b0-setup.exe)

##### Docker
* [docker pull ossrs/srs:6](https://ossrs.io/lts/en-us/docs/v6/doc/getting-started)
* [docker pull ossrs/srs:v6.0-b0](https://ossrs.io/lts/en-us/docs/v6/doc/getting-started)
* [docker pull ossrs/srs:6.0.172](https://ossrs.io/lts/en-us/docs/v6/doc/getting-started)

##### Docker Mirror: aliyun.com
* [docker pull registry.cn-hangzhou.aliyuncs.com/ossrs/srs:6](https://ossrs.net/lts/zh-cn/docs/v6/doc/getting-started)
* [docker pull registry.cn-hangzhou.aliyuncs.com/ossrs/srs:v6.0-b0](https://ossrs.net/lts/zh-cn/docs/v6/doc/getting-started)
* [docker pull registry.cn-hangzhou.aliyuncs.com/ossrs/srs:6.0.172](https://ossrs.net/lts/zh-cn/docs/v6/doc/getting-started)

##### Doc: ossrs.io
* [Getting Started](https://ossrs.io/lts/en-us/docs/v6/doc/getting-started)
* [Wiki home](https://ossrs.io/lts/en-us/docs/v6/doc/introduction)
* [FAQ](https://ossrs.io/lts/en-us/faq), [Features](https://github.com/ossrs/srs/blob/8e573644c198c41da196fd7116cd5f1b1ba1a452/trunk/doc/Features.md#features) or [ChangeLogs](https://github.com/ossrs/srs/blob/8e573644c198c41da196fd7116cd5f1b1ba1a452/trunk/doc/CHANGELOG.md#changelog)

##### Doc: ossrs.net
* [快速入门](https://ossrs.net/lts/zh-cn/docs/v6/doc/getting-started)
* [中文Wiki首页](https://ossrs.net/lts/zh-cn/docs/v6/doc/introduction)
* [中文FAQ](https://ossrs.net/lts/zh-cn/faq), [功能列表](https://github.com/ossrs/srs/blob/8e573644c198c41da196fd7116cd5f1b1ba1a452/trunk/doc/Features.md#features) 或 [修订历史](https://github.com/ossrs/srs/blob/8e573644c198c41da196fd7116cd5f1b1ba1a452/trunk/doc/CHANGELOG.md#changelog)