I have tried debugging it using GDB.
I found that it returns -12 as err over here in libavformat/utils.c
if (!ic) {
err = AVERROR(ENOMEM);
goto fail;
}
I am not exactly sure what does it mean by -12.
However it still moves forward i.e. it does not go to fail and it actually
fails at
if (ic->iformat->read_header) {
err = ic->iformat->read_header(ic, ap);
if (err < 0)
goto fail;
}
It gets -1 in read_header.
Can anyone guide me to correctly set this up ?
Thank You
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Kulti
Sent: 28/09/2010 4:32 PM
To: Libav* user questions and discussions
Subject: Re: [libav-user] av_open_input_stream Failing
Hm... I compare your code with my and found only one difference:
+ ByteIOCtx.is_streamed = 1;
On Tue, Sep 28, 2010 at 2:25 PM, Linux V <[email protected]> wrote:
> Thank you for help again.
>
> I changed the buffer size and made sure that it returns same size in
> read_data()
>
> Still I get -1 in av_open_input_stream and no information even after I
> set log level as AV_LOG_VERBOSE
>
> Any help would be greatly appreciated
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Kulti
> Sent: 27/09/2010 11:25 PM
> To: Libav* user questions and discussions
> Subject: Re: [libav-user] av_open_input_stream Failing
>
> On Mon, Sep 27, 2010 at 9:19 PM, Linux V <[email protected]> wrote:
>
> > Thank you for the help.
> >
> > I have added
> >
> > av_log_set_callback(my_log_callback);
> > av_log_set_level(AV_LOG_VERBOSE);
> >
> > At top of the program and added this function
> >
> > void my_log_callback(void *ptr, int level, const char *fmt, va_list
> > vargs) { if (level > av_log_get_level())
> > return;
> > vprintf(fmt, vargs);
> > }
> >
> > It still does not output any line of log.
> >
> > I am getting return value of -1 from av_open_input_stream
> >
> > Sorry for being novice here, I understand that this is pretty basic
> >
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]] On Behalf Of Mike Edenfield
> > Sent: 27/09/2010 8:54 PM
> > To: [email protected]
> > Subject: Re: [libav-user] av_open_input_stream Failing
> >
> > On 9/27/2010 10:52 AM, Linux V wrote:
> >
> > > I am not sure what is wrong here, probably I am supposed to use
> > > different code/method for ASF ? Is there any way I can get more
> > > information debug information on how it is failing?
> >
> > 1. The negative return values for the FFmpeg functions are
> > meaningful (most likely a value from libavutil/error.h); check the
> > libavformat source code to see what they represent.
> >
> > 2. You can get more debugging information from FFmpeg using
> > something
> like:
> >
> > av_log_set_callback(my_log_callback);
> > av_log_set_level(AV_LOG_DEBUG);
> >
> > void my_log_callback(void *ptr, int level, const char *fmt, va_list
> > vargs) {
> > if (level > av_log_get_level())
> > return;
> >
> > vprintf(fmt, vargs);
> > }
> > _______________________________________________
> > libav-user mailing list
> > [email protected]
> > https://lists.mplayerhq.hu/mailman/listinfo/libav-user
> >
> > _______________________________________________
> > libav-user mailing list
> > [email protected]
> > https://lists.mplayerhq.hu/mailman/listinfo/libav-user
> >
>
> As I remember, read_data() should be return the same size, as received
> in third parameter. Check it.
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