[gst-devel] About GST-FFMPEG problem
nwang at ihopen.cn
Tue Jul 19 01:54:08 CEST 2005
I develop gstreamer software ,use gst-ffmpeg-0.8.4 ,running on ARM platform and find a problem.
when play mov files , for example,
gst-launch filesrc location=/mnt/nfs/dragonballv_default.mp4 ! ffdemux_mov_mp4
will report errors that said read mov header error.
I traced in source code and find reasons:
in gst-libs/ext/ffmpeg/libavformat/utils.c function av_open_input_stream()
err = ic->iformat->read_header(ic, ap);
this line will return error.
In fact ,it calls mov_read_header.
function mov_read_header() first call atom.size = url_filesize(url_fileno(pb));
url_filesize will call seek functions in ext/ffmpeg/gstffmpegprotocol.c
Although the return value is ok and return current file pointer is OK ,
Next seek, the return data are error :The return data are 32kbytes
offset from file header !
You know ,in aviobuf.c ,the buffer size is 32k bytes so I doubt it is realtive with the
buffer operation. gst_bytestream_seek return new pos are OK ,but the data read from file are error !
32k bytes offset !
But all of these are all OK in X86 system ,only on ARM ,decode mov I found this error !
I debug one week and confused .
Please Help me !!!
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the gstreamer-devel