Hello,
Axis Communications AB would like to contribute a packetizer and
depacketizer in avformat implementing the RTP for AV1 specification.
This is my first contribution and I have read the chapter about
submitting patches a couple of times. Nevertheless, I am sorry there are
mistakes in th
Add RTP packetizer and depacketizer according to (most)
of the official AV1 RTP specification. This enables
streaming via RTSP between ffmpeg and ffmpeg and has
also been tested to work with AV1 RTSP streams via
GStreamer.
It also adds the required SDP additions.
Signed-off-by: Chris Hodges
Hi Tristan,
On 11/25/24 18:47, Tristan Matthews via ffmpeg-devel wrote:
I haven't done an in-depth review but I tested this locally and it's working
well. I'm impressed you were able to implement the packetization without
allocating scratch buffers.
I had to rewrite it a couple of times unt
d to work with AV1 RTSP streams via
GStreamer.
It also adds the required SDP attributes for AV1.
AV1 RTP encoding is marked as experimental due to
draft specification status (courtesy of Tristan).
Change-Id: Ie7f984b97be54d86d06bc73fa97c6faa8ffabf89
Signed-off-by: Chris Hodges
---
libavformat/Ma
to (most)
of the official AV1 RTP specification. This enables
streaming via RTSP between ffmpeg and ffmpeg and has
also been tested to work with AV1 RTSP streams via
GStreamer.
It also adds the required SDP additions.
Signed-off-by: Chris Hodges
---
libavformat/Makefile | 2
Hi Tristan,
I have a draft reply ongoing the last couple of days, but I got
sidetracked with other work, sorry. Will send it out without a new patch
so we can discuss the changes and it gives me more time to look into the
issue below.
On 12/11/24 23:53, Tristan Matthews via ffmpeg-devel wrot
Hi Tristan,
thanks for taking the time reviewing.
On 12/6/24 18:39, Tristan Matthews via ffmpeg-devel wrote:
Hi (also apologies if my client mangles the inline version of the patch, it's
the first time I've tried to review an attached patch with it)...
>
+av_log(ctx, AV_LOG_DEBUG, "RTP
ded optional code for searching the sequence
header to determine the first packet for broken
AV1 encoders / parsers.
Stops depacketizing on corruption until next keyframe,
no longer prematurely issues packet on decoding if
temporal unit was not complete yet.
Signed-off-by: Chris Hodges
---
Hi there,
On 12/13/24 15:09, Tristan Matthews via ffmpeg-devel wrote:
I don't seem to be able to replay the Chimera video directly with my
local build of ffplay, get's all choppy and skips big deals of the
video. Might be an outdated libdav1d?
I still have problems with the media server and t
Fixed warning about OBU count being wrong, which can only be
determined when the number of OBUs in the header is non-zero,
not the other way round.
Signed-off-by: Chris Hodges
---
libavformat/rtpdec_av1.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat
Hi there,
On 4/13/25 17:56, Parallelc wrote:
When OBU_HAS_SIZE_FIELD is set in the OBU header, frag_obu_size remains 0.
The code used !frag_obu_size to check for unexpected fragment continuation,
which resulted in incorrect drops. Introduce expect_frag_cont to explicitly
track continuation expe
On 2/26/25 19:26, Ronald S. Bultje wrote:
Added code to support this and enabled the extra scan for the sequence
header OBU.
This is great work, thanks for the additions and LGTM after some testing.
Merged.
Thanks a lot for reviewing and valuable suggestions to all involved!
Will stay on
broken
AV1 encoders / parsers.
Stops depacketizing on corruption until next keyframe,
no longer prematurely issues packet on decoding if
temporal unit was not complete yet.
Change-Id: I90f5c5b9d577908a0d713606706b5654fde5f910
Signed-off-by: Chris Hodges
---
libavformat/Makefile | 2
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