Release mp4forge 0.8.0 with mux and streaming media support

Release `mp4forge` 0.8.0.

Added the feature-gated mux surface with sync/async library APIs, a sync CLI route, flat and fragmented MP4 writing, split init/media output, destination update-or-create behavior, broad path-first import coverage, direct-ingest inspection, sample readers, and elementary sample rewrite/export helpers.

Expanded typed box/sample-entry support, divide/probe media coverage, examples, retained fixtures, tests, and fuzz targets. Improved supported streaming decrypt rewrite paths and refreshed affected top-level `sidx` data after clear-output rewrites.

Updated release-facing docs and metadata for `0.8.0`, and removed deprecated `dump` shorthands in favor of explicit `-full` options.

Author: bakgio

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -13,7 +13,7 @@ body:
     attributes:
       label: mp4forge Version
       description: Which version are you using?
-      placeholder: "0.7.0"
+      placeholder: "0.8.0"
     validations:
       required: true
 

CHANGELOG.md

@@ -1,3 +1,39 @@
+# 0.8.0 (May 26, 2026)
+
+- Added the feature-gated mux release surface, including `MuxRequest`, path-first
+  `MuxTrackSpec` parsing with selector suffixes, flat and fragmented output layout selection,
+  segment or fragment duration modes, sync `mux_to_path`, `mux_into_path`, and
+  `mux_fragmented_to_paths` helpers, Tokio async companions behind `mux` plus `async`, and the
+  sync-only `mux` CLI route
+- Added real MP4 mux writing for both flat and fragmented layouts on one shared mux event graph,
+  with deterministic payload planning, chunk interleaving, duration-based chunking, sync-aligned
+  fragment or segment boundaries, split init/media fragmented outputs, destination update or
+  create-new behavior, preserved flat destination metadata where supported, and explicit
+  validation for unsupported duration-mode or fragmented multi-video requests
+- Added broad mux import coverage for MP4 track import with retained sample-entry bytes, selected
+  AVI, MPEG-PS, MPEG-TS, DASH, NHML, NHNT, SAF, and VobSub-style inputs, plus demux-backed
+  elementary or containerized audio, video, text, subtitle, image, raw-video, and PCM families
+  across the public path-first request shape
+- Added `mp4forge::mux::inspect`, `mp4forge::mux::sample_reader`, and
+  `mp4forge::mux::rewrite` helpers for direct-ingest reporting, packet-focused exports,
+  one-sample-at-a-time seekable or progressive reading, and elementary sample rewrite/export
+  flows for AVC, HEVC, VVC, AV1, AAC ADTS, and MHAS data
+- Expanded typed box and sample-entry coverage needed by the mux, probe, divide, and rewrite
+  paths, including additional DTS, Dolby, IAMF, FLAC, MPEG-H, PCM, uncompressed-visual,
+  codec-configuration, timing, and metadata structures
+- Broadened `divide` and probe behavior for more video and audio sample-entry families while
+  keeping the existing validation-first workflow for unsupported fragmented output shapes
+- Reworked file-backed decrypt rewrite execution to use streaming root rewrite plans for the
+  supported sync and async surfaces, refreshed affected top-level `sidx` data after clear-output
+  rewrites, and kept progress-enabled decrypt surfaces byte-aligned with their non-progress
+  companions
+- Added mux-focused examples, expanded retained fixture coverage, moved test output helpers onto
+  auto-cleaned temporary paths, and added fuzz targets for mux demuxing, sample rewrites, async
+  API parity, decrypt byte-surface parity, extra box roundtrips, bit I/O boundaries, and `sidx`
+  plan application
+- Removed the deprecated `dump` command `-mdat` and `-free` shorthand options; use
+  `-full mdat` or `-full free,skip` explicitly instead
+
 # 0.7.0 (April 28, 2026)
 
 - Added the feature-gated decryption release surface across sync library helpers, Tokio async

Cargo.toml

@@ -1,11 +1,11 @@
 [package]
 name = "mp4forge"
-version = "0.7.0"
+version = "0.8.0"
 edition = "2024"
 rust-version = "1.88"
 authors = ["bakgio"]
 license = "MIT OR Apache-2.0"
-description = "Rust library and CLI for inspecting, probing, extracting, and rewriting MP4 box structures"
+description = "Rust library and CLI for inspecting, probing, extracting, muxing, and rewriting MP4 structures"
 repository = "https://github.com/bakgio/mp4forge"
 readme = "README.md"
 keywords = ["mp4", "isobmff", "parser", "video", "cli"]
@@ -20,14 +20,17 @@ rustdoc-args = ["--cfg", "docsrs"]
 default = []
 async = ["dep:tokio"]
 decrypt = ["dep:aes"]
+mux = []
 serde = ["dep:serde"]
 
 [dependencies]
 aes = { version = "0.8", optional = true }
+miniz_oxide = "0.8"
 serde = { version = "1", features = ["derive"], optional = true }
 terminal_size = "0.4"
 tokio = { version = "1.52.1", features = ["fs", "io-util", "rt", "rt-multi-thread", "macros"], optional = true }
 
 [dev-dependencies]
 aes = "0.8"
 serde_json = "1"
+tempfile = "3"

README.md

@@ -1,7 +1,7 @@
 <p align="center">
   <h1 align="center">mp4forge</h1>
   <p align="center">
-    Rust library and CLI for inspecting, extracting, probing, and rewriting MP4 box structures.
+    Rust library and CLI for inspecting, extracting, probing, muxing, and rewriting MP4 structures.
   </p>
   <p align="center">
     <a href="https://crates.io/crates/mp4forge"><img src="https://img.shields.io/crates/v/mp4forge.svg" alt="Crates.io"></a>
@@ -21,20 +21,22 @@
 - Thin typed path-based helpers and byte-slice convenience wrappers for common extraction, rewrite, and probe flows
 - Fragmented top-level `sidx` analysis, planning, and rewrite APIs for supported layouts
 - Feature-gated decryption APIs and a sync-only `decrypt` CLI for the supported protected MP4 families
-- Built-in CLI for `decrypt`, `dump`, `extract`, `probe`, `psshdump`, `edit`, and `divide`
+- Built-in CLI for `decrypt`, `divide`, `dump`, `edit`, `extract`, `mux`, `probe`, and `psshdump`
 - Shared-fixture coverage for regular MP4, fragmented MP4, encrypted init segments, QuickTime-style metadata cases, and derived real codec fixtures for additional codec-family coverage
 
 ## Installation
 
 ```toml
 [dependencies]
-mp4forge = "0.7.0"
+mp4forge = "0.8.0"
 
 # With optional features:
-# mp4forge = { version = "0.7.0", features = ["async"] }
-# mp4forge = { version = "0.7.0", features = ["decrypt"] }
-# mp4forge = { version = "0.7.0", features = ["decrypt", "async"] }
-# mp4forge = { version = "0.7.0", features = ["serde"] }
+# mp4forge = { version = "0.8.0", features = ["async"] }
+# mp4forge = { version = "0.8.0", features = ["decrypt"] }
+# mp4forge = { version = "0.8.0", features = ["decrypt", "async"] }
+# mp4forge = { version = "0.8.0", features = ["mux"] }
+# mp4forge = { version = "0.8.0", features = ["mux", "async"] }
+# mp4forge = { version = "0.8.0", features = ["serde"] }
 ```
 
 Install the CLI from crates.io:
@@ -68,6 +70,14 @@ feature flags:
   IPMP ACBC and ACGK OD-track movies, and the retained IAEC protected-movie path. When combined
   with `async`, it also enables the additive file-backed Tokio async decrypt companions, while the
   CLI remains on the synchronous path.
+- `mux`: enables the additive mux task surface and the retained low-level helpers underneath it.
+  The library path covers the narrow public `MuxRequest` model with repeated track specs plus
+  optional `segment_duration` or `fragment_duration`, real `ftyp`/`moov`/`mdat` writing for sync
+  callers, additive async real-container writing when combined with `async`, internal chunk and
+  duration coordination on one mux event graph, the retained low-level seekable and progressive
+  payload assembly helpers, and one-sample-at-a-time seekable or progressive readers. It also 
+  enables the sync-only `mux` CLI route for one output MP4 built from repeated 
+  path-first `--track` inputs.
 - `serde`: derives `Serialize` and `Deserialize` for the reusable public report structs under
   `mp4forge::cli::probe` and `mp4forge::cli::dump`, along with their nested public codec-detail,
   media-characteristics, `FieldValue`, and `FourCc` data. This is intended for library-side report
@@ -85,6 +95,7 @@ COMMAND:
   dump         display the MP4 box tree
   edit         rewrite selected boxes
   extract      extract raw boxes by type or path
+  mux          merge one video track plus audio, text, and subtitle tracks into one MP4
   psshdump     summarize pssh boxes
   probe        summarize an MP4 file
 ```
@@ -94,9 +105,37 @@ sync-only, accepts repeated `--key ID:KEY`, optional `--fragments-info FILE`, an
 `--show-progress`, and reuses the same library decryption surface that backs the feature-gated
 sync and async APIs.
 
-`divide` currently targets fragmented inputs with up to one AVC video track and one MP4A audio
-track, including encrypted wrappers that preserve those original sample-entry formats. Pass
-`-validate` when you want the same probe-driven layout checks without creating any output files.
+`mux` is available when the crate is built with `--features mux`. The CLI route stays sync-only
+and accepts repeated `--track` inputs, one required positional output path, and at most one of
+`--segment_duration` or `--fragment_duration`. The current public `--track` grammar is path-first:
+`PATH` imports one raw source or every supported track from one MP4 source, while
+`PATH#video`, `PATH#audio`, `PATH#audio:N`, `PATH#text`, `PATH#text:N`, and `PATH#track:ID`
+select one specific track from a containerized source. The landed path-only auto-detection
+currently covers MP4, supported AVI audio streams plus H.263/JPEG/PNG/MPEG-4 Part 2/H.264/AVC1 video streams, supported
+MPEG-PS MPEG audio streams plus LPCM audio plus MPEG-4 Part 2/H.264/H.265/VVC video streams, supported MPEG-TS
+MPEG audio streams plus AAC LATM/MHAS plus AC-3/E-AC-3/AC-4/DTS/TrueHD audio plus MPEG-2/AV1/AVS3/MPEG-4 Part 2/H.264/H.265/VVC video streams, AAC
+ADTS, MP3, AC-3, E-AC-3, AC-4, AMR, AMR-WB, QCP voice audio, DTS core audio, AAC LATM, Dolby
+TrueHD, leading-sync MHAS MPEG-H, IAMF, H.263 elementary video, MPEG-2 elementary video, MPEG-4 Part 2 elementary video,
+H.264 Annex B, H.265 Annex B, VVC Annex B, raw AV1 OBU, raw AV1 Annex B, IVF-backed AV1, IVF-backed VP8, IVF-backed VP9,
+JPEG still images, PNG still images, WAVE/AIFF/AIFC PCM, native FLAC, Ogg-backed FLAC,
+Ogg-backed Opus, Ogg-backed Vorbis, Ogg-backed Speex, Ogg-backed Theora, and CAF-backed ALAC.
+Broader DTS-family
+sample-entry variants remain supported through MP4 track import, and the broader demux-backed
+path-only families continue to move over behind the same public shape.
+MP4-track merges continue to cover the broader registered sample-entry families because they
+preserve encoded sample-entry bytes from the source file, and mixed video/audio/text/subtitle jobs
+retain imported handler names and languages on the real MP4 path. The matching sync and async
+library entry points use the same `MuxRequest` surface, while the retained lower-level mux helpers
+remain available separately when you need staged planning or payload-copy behavior without the
+task-level request layer. The public `mp4forge::mux::sample_reader` helpers can also expose stable
+text or subtitle track identity when you construct them with companion `MuxTrackConfig` values.
+
+`divide` currently targets fragmented inputs with up to one video track from AVC, HEVC, Dolby
+Vision on HEVC, AV1, VP8, or VP9 and one audio track from MP4A-based audio, Opus, AC-3,
+E-AC-3, AC-4, ALAC, DTS-family entries, FLAC, IAMF, MPEG-H, or PCM, including encrypted wrappers
+that preserve those original sample-entry formats. Subtitle and text tracks remain unsupported in
+the current divide output model. Pass `-validate` when you want the same probe-driven layout
+checks without creating any output files.
 
 `dump` defaults to the existing human-readable tree view. Pass `-format json` or `-format yaml` for
 deterministic structured tree export with stable `payload_fields` for supported boxes; `-full` and
@@ -124,8 +163,9 @@ per-chunk, bitrate, and IDR aggregation, or use `mp4forge::probe::ProbeOptions`
 when you need the same control programmatically.
 
 > See the [`examples/`](./examples) directory for the crate's low-level and high-level API usage
-> patterns, including the feature-gated decrypt example and the Tokio-based async library example
-> behind the optional `async` feature.
+> patterns, including the feature-gated decrypt example, the feature-gated real-mux and
+> mux/sample-reader examples, and the Tokio-based async library example behind the optional
+> `async` feature.
 
 ## License
 

examples/inspect_mux_boundaries.rs

@@ -0,0 +1,29 @@
+#[cfg(feature = "mux")]
+fn main() {
+    use mp4forge::mux::{MuxInterleavePolicy, MuxStagedMediaItem, plan_staged_media_items};
+
+    let plan = plan_staged_media_items(
+        vec![
+            MuxStagedMediaItem::new(0, 1, 0, 1024, 4096, 2048).with_sync_sample(true),
+            MuxStagedMediaItem::new(1, 2, 512, 512, 2048, 1024),
+        ],
+        MuxInterleavePolicy::DecodeTime,
+    )
+    .unwrap();
+
+    for item in plan.planned_items() {
+        println!(
+            "track {} decode [{}..{}) output [{}..{})",
+            item.staged().track_id(),
+            item.staged().decode_time(),
+            item.decode_end_time(),
+            item.output_offset(),
+            item.output_end_offset()
+        );
+    }
+}
+
+#[cfg(not(feature = "mux"))]
+fn main() {
+    eprintln!("enable the `mux` feature to run this example");
+}

examples/mux_fragment_duration.rs

@@ -0,0 +1,38 @@
+#[cfg(feature = "mux")]
+#[path = "support/mux_example_support.rs"]
+mod mux_example_support;
+
+#[cfg(feature = "mux")]
+use std::error::Error;
+
+#[cfg(feature = "mux")]
+use mp4forge::mux::{
+    MuxDurationMode, MuxMp4TrackSelector, MuxOutputLayout, MuxRequest, MuxTrackSpec, mux_to_path,
+};
+
+#[cfg(feature = "mux")]
+fn main() -> Result<(), Box<dyn Error>> {
+    let audio_input = mux_example_support::build_audio_input_file(
+        "example-fragment-audio",
+        mux_example_support::fourcc("dash"),
+        "mp4a",
+        &[b"one", b"two", b"three"],
+    );
+    let output_path = mux_example_support::write_temp_file("example-fragment-output", "mp4", &[]);
+
+    let request = MuxRequest::new(vec![MuxTrackSpec::mp4(
+        &audio_input,
+        MuxMp4TrackSelector::Audio { occurrence: 1 },
+    )])
+    .with_output_layout(MuxOutputLayout::Fragmented)
+    .with_duration_mode(MuxDurationMode::Fragment { seconds: 0.05 });
+
+    mux_to_path(&request, &output_path)?;
+    println!("wrote {}", output_path.display());
+    Ok(())
+}
+
+#[cfg(not(feature = "mux"))]
+fn main() {
+    eprintln!("Enable the `mux` feature to run this example.");
+}

examples/mux_raw_tracks.rs

@@ -0,0 +1,38 @@
+#[cfg(feature = "mux")]
+#[path = "support/mux_example_support.rs"]
+mod mux_example_support;
+
+#[cfg(feature = "mux")]
+use std::error::Error;
+
+#[cfg(feature = "mux")]
+use mp4forge::mux::{MuxRequest, MuxTrackSpec, mux_to_path};
+
+#[cfg(feature = "mux")]
+fn main() -> Result<(), Box<dyn Error>> {
+    let audio_input = mux_example_support::write_test_flac_file("example-raw-audio", b"flac-frame");
+    let first_video_frame = mux_example_support::build_test_av1_sequence_header_obu(640, 360);
+    let second_video_frame = mux_example_support::build_test_av1_sequence_header_obu(640, 360);
+    let video_input = mux_example_support::write_test_av1_ivf_file(
+        "example-raw-video",
+        640,
+        360,
+        &[0, 1],
+        &[&first_video_frame, &second_video_frame],
+    );
+    let output_path = mux_example_support::write_temp_file("example-raw-output", "mp4", &[]);
+
+    let request = MuxRequest::new(vec![
+        MuxTrackSpec::path(&audio_input),
+        MuxTrackSpec::path(&video_input),
+    ]);
+
+    mux_to_path(&request, &output_path)?;
+    println!("wrote {}", output_path.display());
+    Ok(())
+}
+
+#[cfg(not(feature = "mux"))]
+fn main() {
+    eprintln!("Enable the `mux` feature to run this example.");
+}

examples/mux_segment_duration.rs

@@ -0,0 +1,38 @@
+#[cfg(feature = "mux")]
+#[path = "support/mux_example_support.rs"]
+mod mux_example_support;
+
+#[cfg(feature = "mux")]
+use std::error::Error;
+
+#[cfg(feature = "mux")]
+use mp4forge::mux::{
+    MuxDurationMode, MuxMp4TrackSelector, MuxOutputLayout, MuxRequest, MuxTrackSpec, mux_to_path,
+};
+
+#[cfg(feature = "mux")]
+fn main() -> Result<(), Box<dyn Error>> {
+    let audio_input = mux_example_support::build_audio_input_file(
+        "example-segment-audio",
+        mux_example_support::fourcc("dash"),
+        "mp4a",
+        &[b"one", b"two", b"three"],
+    );
+    let output_path = mux_example_support::write_temp_file("example-segment-output", "mp4", &[]);
+
+    let request = MuxRequest::new(vec![MuxTrackSpec::mp4(
+        &audio_input,
+        MuxMp4TrackSelector::Audio { occurrence: 1 },
+    )])
+    .with_output_layout(MuxOutputLayout::Fragmented)
+    .with_duration_mode(MuxDurationMode::Segment { seconds: 0.05 });
+
+    mux_to_path(&request, &output_path)?;
+    println!("wrote {}", output_path.display());
+    Ok(())
+}
+
+#[cfg(not(feature = "mux"))]
+fn main() {
+    eprintln!("Enable the `mux` feature to run this example.");
+}

examples/mux_subtitle_tracks.rs

@@ -0,0 +1,48 @@
+#[cfg(feature = "mux")]
+#[path = "support/mux_example_support.rs"]
+mod mux_example_support;
+
+#[cfg(feature = "mux")]
+use std::error::Error;
+
+#[cfg(feature = "mux")]
+use mp4forge::mux::{MuxMp4TrackSelector, MuxRequest, MuxTrackSpec, mux_to_path};
+
+#[cfg(feature = "mux")]
+fn main() -> Result<(), Box<dyn Error>> {
+    let video_input = mux_example_support::build_video_input_file(
+        "example-subtitle-video",
+        mux_example_support::fourcc("isom"),
+        "avc1",
+        &[b"video"],
+    );
+    let audio_input = mux_example_support::build_audio_input_file_with_timing(
+        "example-subtitle-audio",
+        mux_example_support::fourcc("dash"),
+        "mp4a",
+        1_000,
+        1_000,
+        &[b"aud"],
+    );
+    let text_input = mux_example_support::build_text_input_file(
+        "example-subtitle-text",
+        mux_example_support::fourcc("mp42"),
+    );
+    let output_path = mux_example_support::write_temp_file("example-subtitle-output", "mp4", &[]);
+
+    let request = MuxRequest::new(vec![
+        MuxTrackSpec::mp4(&video_input, MuxMp4TrackSelector::Video),
+        MuxTrackSpec::mp4(&audio_input, MuxMp4TrackSelector::Audio { occurrence: 1 }),
+        MuxTrackSpec::mp4(&text_input, MuxMp4TrackSelector::Text { occurrence: 1 }),
+        MuxTrackSpec::mp4(&text_input, MuxMp4TrackSelector::Text { occurrence: 2 }),
+    ]);
+
+    mux_to_path(&request, &output_path)?;
+    println!("wrote {}", output_path.display());
+    Ok(())
+}
+
+#[cfg(not(feature = "mux"))]
+fn main() {
+    eprintln!("Enable the `mux` feature to run this example.");
+}