Is it possible to support OBS publish HEVC stream over rtmp ?

[cochiachang]

Description

Note that SRS already has HEVC over SRT/HLS/HTTP-TS/WebRTC support, see #465

1. SRS Version: 6.0.10

2. SRS Log:

[2023-03-13 19:13:35.025][INFO][4274][52f90744] RTMP client ip=172.16.50.225:52391, fd=83
[2023-03-13 19:13:35.028][INFO][4274][52f90744] simple handshake success.
[2023-03-13 19:13:35.029][INFO][4274][52f90744] connect app, tcUrl=rtmp://172.16.46.87/live, pageUrl=, swfUrl=rtmp://172.16.46.87/live, schema=rtmp, vhost=172.16.46.87, port=1935, app=live, args=null
[2023-03-13 19:13:35.029][INFO][4274][52f90744] protocol in.buffer=0, in.ack=0, out.ack=0, in.chunk=4096, out.chunk=128
[2023-03-13 19:13:35.103][INFO][4274][52f90744] client identified, type=fmle-publish, vhost=172.16.46.87, app=live, stream=test, param=, duration=0ms
[2023-03-13 19:13:35.103][INFO][4274][52f90744] connected stream, tcUrl=rtmp://172.16.46.87/live, pageUrl=, swfUrl=rtmp://172.16.46.87/live, schema=rtmp, vhost=__defaultVhost__, port=1935, app=live, stream=test, param=, args=null
[2023-03-13 19:13:35.103][INFO][4274][52f90744] source url=/live/test, ip=172.16.50.225, cache=1/2500, is_edge=0, source_id=/im03rm66
[2023-03-13 19:13:35.161][INFO][4274][52f90744] RTC bridge from RTMP, rtmp2rtc=0, keep_bframe=0, merge_nalus=0
[2023-03-13 19:13:35.162][INFO][4274][52f90744] hls: win=60000ms, frag=10000ms, prefix=, path=./objs/nginx/html, m3u8=[app]/[stream].m3u8, ts=[app]/[stream]-[seq].ts, aof=2.00, floor=0, clean=1, waitk=1, dispose=0ms, dts_directly=1
[2023-03-13 19:13:35.162][INFO][4274][52f90744] ignore disabled exec for vhost=__defaultVhost__
[2023-03-13 19:13:35.162][INFO][4274][52f90744] start publish mr=0/350, p1stpt=20000, pnt=5000, tcp_nodelay=0
[2023-03-13 19:13:35.208][INFO][4274][52f90744] got metadata, width=800, height=450, vcodec=7, acodec=10
[2023-03-13 19:13:35.530][INFO][4274][52f90744] 7B audio sh, codec(10, profile=LC, 2channels, 0kbps, 48000HZ), flv(16bits, 2channels, 44100HZ)

3. SRS Config:

same as hevc.flv.conf

Replay

Step 1: Publish stream from OBS v29.0.2, and select encoder QuickSync HEVC

Step 2: Start Streaming to SRS server

Step 3: SRS console can see this stream but can not get stream type, and can not play

Expect

I can see HEVC format video in srs v6.0.10 from publish stream by ffmpeg, but can not see stream if publish from OBS, and I can publish HEVC format by OBS to youtube, and it is normal.
I expect to use OBS to stream in SRS should also be able to play.

[winlinvip]

Make sense! Could you please join the discord and we need some help from you, about the environment setup.

[flying1314]

OBS will support AV1、HEVC over RTMP, see this PR, it has been merged, and will be released in OBS 29.1
obsproject/obs-studio#8522

[winlinvip]

@flying1314 Thanks.

obsproject/obs-studio#8522
Enable AV1, HEVC via RTMP to YouTube #8522

Please note that OBS also support RTMP HEVC in OBS 29.1, so SRS will also follow this standard.

Video FourCC
AV1 = { 'a', 'v', '0', '1' } 
VP9 = { 'v', 'p', '0', '9' } 
HEVC = { 'h', 'v', 'c', '1' }

Captured by wireshark is here: obs-hevc-rtmp-29.1.pcapng.zip

SRS will support OBS 29.1 to push HEVC via RTMP, please note that previous verisoned OBS is not supported.

Note: Old versions of OBS supported HEVC via RTMP but with bugs, the codecid is duplicated to AVC.

[wsy]

Hi @winlinvip ,
I'm using OBS30.1.2 to stream over RTMP.
I tried both SRS 5.x and SRS 6.x with both Docker(Ubuntu) and Windows. With all four combinations, I cannot stream QSV HEVC nor NVEnc HEVC.

Is there anything I can do to see what went wrong?

[Docteh]

I got odd errors with OBS 29.0.2, and so I blindly accepted upgrade to OBS 30.2.0 this version works.

publishing with RTMP, NVENC on GTX1080

[wsy]

I got odd errors with OBS 29.0.2, and so I blindly accepted upgrade to OBS 30.2.0 this version works.

publishing with RTMP, NVENC on GTX1080

Hi @Docteh ,
I upgraded to OBS30.2.0, and I still cannot use HEVC, nor NVEnc. I have i7 6700k with RTX2080.
Can you please share you detailed configuration?

I tried with OBS30.1.2 and OBS30.2.0, the results are the same:

Codec	SRS5.exe	SRS6.exe	SRS5Docker	SRS6Docker
CPU x264	Work	Work	Work	Work
QSV H264	Work	Work	Work	Work
QSV HEVC	No	No	No	No
NVEnc H264	No	No	No	No
NVEnc HEVC	No	No	No	No

In the console log of SRS, there's nothing but regular CPU usage report.

[Docteh]

Not sure what sort of detail you need. When I connect with OBS I see this pop up in the log. The CPU usage updates can cause it to scroll past quickly

This is what OBS is told under Output

For config on SRS 6.x I am using http.ts.live.conf

[wsy]

Not sure what sort of detail you need. When I connect with OBS I see this pop up in the log. The CPU usage updates can cause it to scroll past quickly

This is what OBS is told under Output

For config on SRS 6.x I am using http.ts.live.conf

Hi,
Thanks for your information.
I tried 'http.ts.live.conf' and OBS configuration such as 'CQP' instead of 'VBR', but still no luck.

As of the 'CPU Update' log, it's a 2-line log and it's generated every five seconds. So nothing would slip away.

[Docteh]

So what does the SRS log show on your end? If its not showing even an RTMP connection, its likely that the problem is within OBS, or maybe a firewall

The mere act of a TCP connection on port 1935, via something like OBS or telnet seems to print something to the log

[2024-07-20 14:48:58.166][INFO][1387][n796b84f] RTMP client ip=127.0.0.1:55166, fd=9

[wsy]

If its not showing even an RTMP connection, its likely that the problem is within OBS, or maybe a firewall

I don't think it's firewall problem. Because I can stream with Intel QSV and H264.

[2024-07-20 14:48:58.166][INFO][1387][n796b84f] RTMP client ip=127.0.0.1:55166, fd=9

I will try to find the log file instead of the console log and see if there's anything related to tcp connection.

[wsy]

Hi Docteh,
Thanks for your idea. I re-checked my network configuration. It's indeed networking problem.
I can now stream with NVEnc or HEVC. Thanks a lot.