Quicktime Encoder help
Quicktime Encoder help
- Subject: Quicktime Encoder help
- From: aruna nagaraj <email@hidden>
- Date: Thu, 6 Aug 2009 19:10:27 +0530
Hello,
This is related to quicktime API .I had posted these queries in the
quicktime-api list but there was no response . In case some one knows
about the below in this list please let me know .
I am sending video between two applications. I am having the below
problems, please can anyone help
me with some pointers for the same:
1) I am using Sequence grabber to capture the video and using
quicktime api EncodeFrame to encode it to H264 format and then
transmit to the other end .The encoded frame has 4 to 5 NAL units and
the size of each NAL
varies . The UDP packet size should not exceed 1400 bytes . As the
other end cannot reassemble the Fragment units ( Single NAL mode), I
cannot use FU-A fragmentation for transmission of packets .
Please let me know if there is a way to control the NAL unit size in
the encoder through any of the Quicktime API's or any other means ? I
tried using the SGSetPrefereedPacketSize but still the size of the NAL
is the same .
2) Can compression sequence be used for H264 encoding ? In few of the
blogs it is suggested to use compression session for H264 encoding ,
is this correct ?Guess if sequence is used then there is a API to set
the Preferred packet size but I have not come across such a option for
session.
3) I want to capture the desktop (content sharing)and send to the
other end , please suggest how to go
about it. I have seen a sample application doing this by using openGL
.Is there any other means to do ?
Thanks in advance,
Aruna
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden