Flag AVFMT_FLAG_IGNIDX might help.
We're using it with one of the latest libav (similar to ffmpeg) builds.
I don't
know if the flag works with ffmpeg.
In our case we are having fragmented video files, which do not contain any hint
data at all.
This makes the av_open_input_file (or avformat_open_input as it called now) a
lenghty procedure as well.
But watchout: Fast load can lead to a (first time) slow seek.
Based on my experience, an index is required for
seeking.
The first time you wish to seek, the library creates an index.
Beni
-- code --
if( mIsFastload )
{
mFormatContext = avformat_alloc_context();
mFormatContext->flags |= AVFMT_FLAG_IGNIDX;
}
avformat_open_input( &mFormatContext, mFilePath.toStdString().c_str(), NULL,
NULL )
----Ursprüngliche Nachricht----
Von: [email protected]
Datum: 03.05.2012 11:22
An: <[email protected]>
Betreff: [Libav-user]
av_open_input_file takes a while
Hi
I'm using the method avformat_open_input to load a ~2GB h264 encoded video file.
int err = avformat_open_input(&m_formatContext, path, NULL, NULL);
This takes a bit too long however, is there any
way to make it faster?
-mika
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