FFmpeg 7.1 "Péter" is released (September 30, 2024)

[mayconhvab]

September 30th, 2024, FFmpeg 7.1 "Péter"
FFmpeg 7.1 "Péter", a new major release, is now available! A full list of changes can be found in the release changelog.

The more important highlights of the release are that the VVC decoder, merged as experimental in version 7.0, has had enough time to mature and be optimized enough to be declared as stable. The codec is starting to gain traction with broadcast standardization bodies.
Support has been added for a native AAC USAC (part of the xHE-AAC coding system) decoder, with the format starting to be adopted by streaming websites, due to its extensive volume normalization metadata.
MV-HEVC decoding is now supported. This is a stereoscopic coding tool that begun to be shipped and generated by recent phones and VR headsets.
LC-EVC decoding, an enhancement metadata layer to attempt to improve the quality of codecs, is now supported via an external library.

Support for Vulkan encoding, with H264 and HEVC was merged. This finally allows fully Vulkan-based decode-filter-encode pipelines, by having a sink for Vulkan frames, other than downloading or displaying them. The encoders have feature-parity with their VAAPI implementation counterparts. Khronos has announced that support for AV1 encoding is also coming soon to Vulkan, and FFmpeg is aiming to have day-one support.

In addition to the above, this release has had a lot of important internal work done. By far, the standout internally are the improvements made for full-range images. Previously, color range data had two paths, no negotiation, and was unreliably forwarded to filters, encoders, muxers. Work on cleaning the system up started more than 10 years ago, however this stalled due to how fragile the system was, and that breaking behaviour would be unacceptable. The new system fixes this, so now color range is forwarded correctly and consistently everywhere needed, and also laid the path for more advanced forms of negotiation.
Cropping metadata is now supported with Matroska and MP4 formats. This metadata is important not only for archival, but also with AV1, as hardware encoders require its signalling due to the codec not natively supporting one.

As usual, we recommend that users, distributors, and system integrators to upgrade unless they use current git master.


FFmpeg 7.1 "Péter"
7.1 was released on 2024-09-30. It is the latest stable FFmpeg release from the 7.1 release branch, which was cut from master on 2024-09-24.

It includes the following library versions:

libavutil 59. 39.100
libavcodec 61. 19.100
libavformat 61. 7.100
libavdevice 61. 3.100
libavfilter 10. 4.100
libswscale 8. 3.100
libswresample 5. 3.100
libpostproc 58. 3.100


4 version 7.1:
5 - Raw Captions with Time (RCWT) closed caption demuxer
6 - LC3/LC3plus decoding/encoding using external library liblc3
7 - ffmpeg CLI filtergraph chaining
8 - LC3/LC3plus demuxer and muxer
9 - pad_vaapi, drawbox_vaapi filters
10 - vf_scale supports secondary ref input and framesync options
11 - vf_scale2ref deprecated
12 - qsv_params option added for QSV encoders
13 - VVC decoder compatible with DVB test content
14 - xHE-AAC decoder
15 - removed DEC Alpha DSP and support code
16 - VVC encoding support via libvvenc
17 - perlin video source
18 - D3D12VA HEVC encoder
19 - Cropping metadata parsing and writing in Matroska and MP4/MOV de/muxers
20 - Intel QSV-accelerated VVC decoding
21 - MediaCodec AAC/AMR-NB/AMR-WB/MP3 decoding
22 - YUV colorspace negotiation for codecs and filters, obsoleting the
23 YUVJ pixel format
24 - Vulkan H.264 encoder
25 - Vulkan H.265 encoder
26 - stream specifiers in fftools can now match by stream disposition
27 - LCEVC enhancement data exporting in H.26x and MP4/ISOBMFF
28 - LCEVC filter
29 - MV-HEVC decoding

[mayconhvab]

We expect great things to come in the future for FFmpeg and that FFmpeg 7.1 will soon arrive in VLC 3.0.22 or 3.0.23 and VLC 4.0

[bossesand]

This question is not in the correct place but I cannot find a relevant fora to ask
Can any one assist I want Encode AAC for Ambisonics in AAC to support playback on a web page.

I cannot get ffmpeg 7.0.2 to encode 9 11 12 or 16 channels AAC.
It recognises a 12 channel wav file as 7.1.4 but refuses to encode it to aac.
I am not a ffmpeg guru - is both libfdk and aac LC encoders stuck in the past.

Chat GPT lies and says it can be done.
Is it a lost cause?

[Lotesdelere]

Can any one assist I want Encode AAC for Ambisonics in AAC to support playback on a web page.

I cannot get ffmpeg 7.0.2 to encode 9 11 12 or 16 channels AAC.
It recognises a 12 channel wav file as 7.1.4 but refuses to encode it to aac.
I am not a ffmpeg guru - is both libfdk and aac LC encoders stuck in the past.

I'm not sure there is a freeware AAC encoder which support that.

For instance, it looks like libfdk only supports up to 7.1:

Code: Select all

$ ffmpeg -h encoder=libfdk_aac Encoder libfdk_aac [Fraunhofer FDK AAC]: General capabilities: dr1 delay small Threading capabilities: none Supported sample rates: 96000 88200 64000 48000 44100 32000 24000 22050 16000 12000 11025 8000 Supported sample formats: s16 Supported channel layouts: mono stereo 3.0 4.0 5.0 5.1 6.1(back) 7.1(wide) 7.1 7.1(top)

Source:
https://gist.github.com/ScribbleGhost/5 ... bd6a64571c

Plus I don't know if any decoder/receiver will support such AAC format.