Latest version is overshooting about scream

[IngJohEricsson]

Hi
Do you see the overshoot problem in the latest version ?

[wujin1989]

hihi
When the bandwidth is limited to 1Mbps, call getTargetBitrate to get a value much larger than 1Mbps With My MultiMedia Code .
Encoder: libx264 ABR
Try Use scream bw test tool , it's normal by limited to 1Mbps.

This case is normal or not? Scream algorithm issue or The problem of SW encoder ABR instability

[IngJohEricsson]

Hi Sorry for the delay. Based on your email I don’t know what kind of setup you are running. Is it the SCReAM BW test tool or the gstreamer plugins ? /Ingemar From: wujin1989 ***@***.***> Sent: den 11 maj 2021 10:43 To: EricssonResearch/scream ***@***.***> Cc: Ingemar Johansson S ***@***.***>; Comment ***@***.***> Subject: Re: [EricssonResearch/scream] Latest version is overshooting (#9) hihi When the bandwidth is limited to 1Mbps, call getTargetBitrate to get a value much larger than 1Mbps With My MultiMedia Code . Encoder: libx264 ABR Try Use scream bw test tool , it's normal by limited to 1Mbps. This case is normal or not? Scream algorithm issue or The problem of SW encoder ABR instability — You are receiving this because you commented. Reply to this email directly, view it on GitHub <https://protect2.fireeye.com/v1/url?k=bbb1fe45-e42ac740-bbb1bede-86959e472243-f0e9a7254223e16b&q=1&e=62984646-6a35-4135-bc8a-d8256e630f31&u=https%3A%2F%2Fgithub.com%2FEricssonResearch%2Fscream%2Fissues%2F9%23issuecomment-838085618> , or unsubscribe <https://protect2.fireeye.com/v1/url?k=d8e2a80e-8779910b-d8e2e895-86959e472243-bcf0018d063318b3&q=1&e=62984646-6a35-4135-bc8a-d8256e630f31&u=https%3A%2F%2Fgithub.com%2Fnotifications%2Funsubscribe-auth%2FACRZ2GCMLPPLVIXY6ERUQZTTNDUXXANCNFSM4DOEJPTA> . <https://github.com/notifications/beacon/ACRZ2GDHE4ZVYF6FJVAKWFTTNDUXXA5CNFSM4DOEJPTKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOGH2CX4Q.gif>

[wujin1989]

Hi

I use scream in my media client and server program, and the client sends the code stream to the server.
Client runs sender
The server runs the receiver

The client calls the getTargetBitrate() function and then sets it to the encoder. The target bitrate is normal at the beginning in fast mode, when it is close to the limited bandwidth, but it will always exceed the limited bandwidth. For example, the bandwidth is limited to 1Mbps, but the getTargetBitrate() may rush to 1.6Mbps.

This case if normal or not？

[IngJohEricsson]

Hi It is possible that the max bitrate is not configured correctly. Please see parameter list at https://github.com/EricssonResearch/scream/blob/master/code/ScreamTx.h#L135 /Ingemar From: wujin1989 ***@***.***> Sent: den 21 maj 2021 11:56 To: EricssonResearch/scream ***@***.***> Cc: Ingemar Johansson S ***@***.***>; Comment ***@***.***> Subject: Re: [EricssonResearch/scream] Latest version is overshooting (#9) Hi I use scream in my media client and server program, and the client sends the code stream to the server. Client runs sender The server runs the receiver The client calls the getTargetBitrate() function and then sets it to the encoder. The target bitrate is normal at the beginning in fast mode, when it is close to the limited bandwidth, but it will always exceed the limited bandwidth. For example, the bandwidth is limited to 1Mbps, but the getTargetBitrate() may rush to 1.6Mbps. This case if normal or not？ — You are receiving this because you commented. Reply to this email directly, view it on GitHub <https://protect2.fireeye.com/v1/url?k=775b2f46-28c01643-775b6fdd-86d2114eab2f-cc0575f6e4aecfb1&q=1&e=45dae0eb-6548-45b0-bced-441dd4c96bbb&u=https%3A%2F%2Fgithub.com%2FEricssonResearch%2Fscream%2Fissues%2F9%23issuecomment-845834052> , or unsubscribe <https://protect2.fireeye.com/v1/url?k=05714463-5aea7d66-057104f8-86d2114eab2f-0f1bd96a2b2bc1b3&q=1&e=45dae0eb-6548-45b0-bced-441dd4c96bbb&u=https%3A%2F%2Fgithub.com%2Fnotifications%2Funsubscribe-auth%2FACRZ2GDCEWDZGTDTFL44SR3TOYUZ3ANCNFSM4DOEJPTA> . <https://github.com/notifications/beacon/ACRZ2GBKRCV2UTUKSZVA7XLTOYUZ3A5CNFSM4DOEJPTKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOGJVGORA.gif>