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“Encoded Mode” video device.

Brian Lee

Thu, Jan 18, 2018 10:38 PM

Hi All,

Reading the page titled “Video Device API”, (
http://www.pjsip.org/pjmedia/docs/html/group__video__device__api.htm), I
see the following statement:

Some video devices support built-in hardware video codecs, and application
can use the video device in encoded mode to make use of these hardware
codecs.

I think that this suggests that I can create a video device that provides
already encoded data, for example H264, without the need to pass it to an
encoder.

I cannot however seem to see any other mention of this in the docs, or
indeed the “encoded mode” mentioned in the statement.

Any pointers for this? I would like to avoid having a “fake” encoder that
just passes the data through.

Hi All, Reading the page titled “Video Device API”, ( http://www.pjsip.org/pjmedia/docs/html/group__video__device__api.htm), I see the following statement: Some video devices support built-in hardware video codecs, and application can use the video device in encoded mode to make use of these hardware codecs. I think that this suggests that I can create a video device that provides already encoded data, for example H264, without the need to pass it to an encoder. I cannot however seem to see any other mention of this in the docs, or indeed the “encoded mode” mentioned in the statement. Any pointers for this? I would like to avoid having a “fake” encoder that just passes the data through.

Brian Lee

Sat, Jan 20, 2018 11:45 AM

Trying to send this again since it didn’t show up the first time.

Hi All,

Reading the page titled “Video Device API”, (
http://www.pjsip.org/pjmedia/docs/html/group__video__device__api.htm), I
see the following statement:

Some video devices support built-in hardware video codecs, and application
can use the video device in encoded mode to make use of these hardware
codecs.

I think that this suggests that I can create a video device that provides
already encoded data, for example H264, without the need to pass it to an
encoder.

I cannot however seem to see any other mention of this in the docs, or
indeed the “encoded mode” mentioned in the statement.

Any pointers for this? I would like to avoid having a “fake” encoder that
just passes the data through.

Trying to send this again since it didn’t show up the first time. Hi All, Reading the page titled “Video Device API”, ( http://www.pjsip.org/pjmedia/docs/html/group__video__device__api.htm), I see the following statement: Some video devices support built-in hardware video codecs, and application can use the video device in encoded mode to make use of these hardware codecs. I think that this suggests that I can create a video device that provides already encoded data, for example H264, without the need to pass it to an encoder. I cannot however seem to see any other mention of this in the docs, or indeed the “encoded mode” mentioned in the statement. Any pointers for this? I would like to avoid having a “fake” encoder that just passes the data through.