AVFormatParameters are converted into corresponding private options in
av_open_input_file/stream() compat wrappers, so accessing them from
demuxers is redundant.

Show the invalid string in the error message.

While at it also prefer "Could not" over "Couldn't", plain forms are
preferred over contractions (simplify readability, especially for non
English-savvy people).

Signed-off-by: Anton Khirnov <anton@khirnov.net>

The variable is used for containing the parsed value of framerate,
using a lexically consistent name eases readability/understanding.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

It was errouneously changed to "NTSC" by the recent merge commit.

Setting a standard is meaningful only for analog capture devices.

It's simpler and less error-prone.

Fixes some memleaks along the way.

Simplify/clarify the code logic and error reporting.

Avoid a failure with the default value of "NTSC". Not all drivers
support a standard.

Improve readability.

This will be useful in the following commit.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Done to keep ABI compatible. Otherwise this is just silly

It is pretty hopeless that other considerable projects will adopt
libavutil alone in other projects. Projects that need small footprint
are better off with more specialized libraries such as gnulib or rather
just copy the necessary parts that they need. With this in mind, nobody
is helped by having libavutil and libavcore split. In order to ease
maintenance inside and around FFmpeg and to reduce confusion where to
put common code, avcore's functionality is merged (back) to avutil.

Signed-off-by: Reinhard Tartler <siretart@tauware.de>

This also lists the objects from those two libraries as internal (by adding
the ff_ prefix) so that they can then be hidden via linker scripts.
(cherry picked from commit c6610a216e)

This also lists the objects from those two libraries as internal (by adding
the ff_ prefix) so that they can then be hidden via linker scripts.

Originally committed as revision 26225 to svn://svn.ffmpeg.org/ffmpeg/trunk

timebase value already set in the driver, and set it back in the codec
stream, rather than leaving the invalid value of 0/0.

In particular, fix ffmpeg grabbing timestamps when the timebase value
is not set through the CLI.

Originally committed as revision 26224 to svn://svn.ffmpeg.org/ffmpeg/trunk

ioctl failure in mmap_release_buffer().

Originally committed as revision 26214 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by José Miguel Gonçalves (jose DOT goncalves AT inov DOT pt)

Originally committed as revision 25159 to svn://svn.ffmpeg.org/ffmpeg/trunk

and more readable.

Originally committed as revision 25108 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25106 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 25058 to svn://svn.ffmpeg.org/ffmpeg/trunk

video4linux2 devices. This is used by Sensoray Model 2253 cards.
Patch by Pete Eberlein (pete AT sensoray DOT com)

Originally committed as revision 24759 to svn://svn.ffmpeg.org/ffmpeg/trunk

av_check_image_size() instead.

Originally committed as revision 24711 to svn://svn.ffmpeg.org/ffmpeg/trunk

of failure return the stored value rather than the current errno,
which may be overwritten by a following call to close().

Originally committed as revision 23001 to svn://svn.ffmpeg.org/ffmpeg/trunk

function. Avoids the following warning:
libavdevice/v4l2.c: In function ‘v4l2_read_header’:
libavdevice/v4l2.c:586: warning: ‘codec_id’ may be used uninitialized in this function

Originally committed as revision 22986 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22982 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22980 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22979 to svn://svn.ffmpeg.org/ffmpeg/trunk

Move check on frame size after the device is opened and after
device_try_init() is attempted. If the provided size value is 0x0,
perform a VIDIOC_G_FMT ioctl() on the device, which sets size to the
current settings.

Originally committed as revision 22971 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22966 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22963 to svn://svn.ffmpeg.org/ffmpeg/trunk

is deprecated and will be dropped at the next major bump.

Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk