[FFmpeg-cvslog] doc: update to refer to avconv

Luca Barbato git at videolan.org
Sun Dec 11 01:12:48 CET 2011


ffmpeg | branch: master | Luca Barbato <lu_zero at gentoo.org> | Sat Dec 10 01:58:04 2011 +0100| [708060d7d12bcd6f3267f9dd8129f8947bcd92fd] | committer: Luca Barbato

doc: update to refer to avconv

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=708060d7d12bcd6f3267f9dd8129f8947bcd92fd
---

 doc/faq.texi |   72 ++++++++++++++++++++++++++-------------------------------
 1 files changed, 33 insertions(+), 39 deletions(-)

diff --git a/doc/faq.texi b/doc/faq.texi
index 91a380e..f3ddbbe 100644
--- a/doc/faq.texi
+++ b/doc/faq.texi
@@ -24,10 +24,10 @@ No. Windows DLLs are not portable, bloated and often slow.
 Moreover Libav strives to support all codecs natively.
 A DLL loader is not conducive to that goal.
 
- at section I cannot read this file although this format seems to be supported by ffmpeg.
+ at section I cannot read this file although this format seems to be supported by avconv.
 
-Even if ffmpeg can read the container format, it may not support all its
-codecs. Please consult the supported codec list in the ffmpeg
+Even if avconv can read the container format, it may not support all its
+codecs. Please consult the supported codec list in the avconv
 documentation.
 
 @section Which codecs are supported by Windows?
@@ -81,12 +81,6 @@ problem and an NP-hard problem...
 
 @chapter Usage
 
- at section ffmpeg does not work; what is wrong?
-
-Try a @code{make distclean} in the ffmpeg source directory before the build.
-If this does not help see our
- at uref{http://libav.org/bugreports.html, bug reporting guidelines}.
-
 @section How do I encode single pictures into movies?
 
 First, rename your pictures to follow a numerical sequence.
@@ -94,7 +88,7 @@ For example, img1.jpg, img2.jpg, img3.jpg,...
 Then you may run:
 
 @example
-  ffmpeg -f image2 -i img%d.jpg /tmp/a.mpg
+  avconv -f image2 -i img%d.jpg /tmp/a.mpg
 @end example
 
 Notice that @samp{%d} is replaced by the image number.
@@ -117,17 +111,17 @@ If you want to sequence them by oldest modified first, substitute
 Then run:
 
 @example
-  ffmpeg -f image2 -i /tmp/img%03d.jpg /tmp/a.mpg
+  avconv -f image2 -i /tmp/img%03d.jpg /tmp/a.mpg
 @end example
 
-The same logic is used for any image format that ffmpeg reads.
+The same logic is used for any image format that avconv reads.
 
 @section How do I encode movie to single pictures?
 
 Use:
 
 @example
-  ffmpeg -i movie.mpg movie%d.jpg
+  avconv -i movie.mpg movie%d.jpg
 @end example
 
 The @file{movie.mpg} used as input will be converted to
@@ -135,15 +129,15 @@ The @file{movie.mpg} used as input will be converted to
 
 Instead of relying on file format self-recognition, you may also use
 @table @option
- at item -vcodec ppm
- at item -vcodec png
- at item -vcodec mjpeg
+ at item -c:v ppm
+ at item -c:v png
+ at item -c:v mjpeg
 @end table
 to force the encoding.
 
 Applying that to the previous example:
 @example
-  ffmpeg -i movie.mpg -f image2 -vcodec mjpeg menu%d.jpg
+  avconv -i movie.mpg -f image2 -c:v mjpeg menu%d.jpg
 @end example
 
 Beware that there is no "jpeg" codec. Use "mjpeg" instead.
@@ -165,13 +159,13 @@ Try '-f image2 test%d.jpg'.
 @section Why can I not change the framerate?
 
 Some codecs, like MPEG-1/2, only allow a small number of fixed framerates.
-Choose a different codec with the -vcodec command line option.
+Choose a different codec with the -c:v command line option.
 
- at section How do I encode Xvid or DivX video with ffmpeg?
+ at section How do I encode Xvid or DivX video with avconv?
 
 Both Xvid and DivX (version 4+) are implementations of the ISO MPEG-4
 standard (note that there are many other coding formats that use this
-same standard). Thus, use '-vcodec mpeg4' to encode in these formats. The
+same standard). Thus, use '-c:v mpeg4' to encode in these formats. The
 default fourcc stored in an MPEG-4-coded file will be 'FMP4'. If you want
 a different fourcc, use the '-vtag' option. E.g., '-vtag xvid' will
 force the fourcc 'xvid' to be stored as the video fourcc rather than the
@@ -188,7 +182,7 @@ things to try: '-bf 2', '-flags qprd', '-flags mv0', '-flags skiprd'.
 but beware the '-g 100' might cause problems with some decoders.
 Things to try: '-bf 2', '-flags qprd', '-flags mv0', '-flags skiprd.
 
- at section Interlaced video looks very bad when encoded with ffmpeg, what is wrong?
+ at section Interlaced video looks very bad when encoded with avconv, what is wrong?
 
 You should use '-flags +ilme+ildct' and maybe '-flags +alt' for interlaced
 material, and try '-top 0/1' if the result looks really messed-up.
@@ -203,9 +197,9 @@ Just create an "input.avs" text file with this single line ...
 @example
   DirectShowSource("C:\path to your file\yourfile.asf")
 @end example
-... and then feed that text file to ffmpeg:
+... and then feed that text file to avconv:
 @example
-  ffmpeg -i input.avs
+  avconv -i input.avs
 @end example
 
 For ANY other help on Avisynth, please visit the
@@ -222,13 +216,13 @@ equally humble @code{copy} under Windows), and finally transcoding back to your
 format of choice.
 
 @example
-ffmpeg -i input1.avi -sameq intermediate1.mpg
-ffmpeg -i input2.avi -sameq intermediate2.mpg
+avconv -i input1.avi -same_quant intermediate1.mpg
+avconv -i input2.avi -same_quant intermediate2.mpg
 cat intermediate1.mpg intermediate2.mpg > intermediate_all.mpg
-ffmpeg -i intermediate_all.mpg -sameq output.avi
+avconv -i intermediate_all.mpg -same_quant output.avi
 @end example
 
-Notice that you should either use @code{-sameq} or set a reasonably high
+Notice that you should either use @code{-same_quant} or set a reasonably high
 bitrate for your intermediate and output files, if you want to preserve
 video quality.
 
@@ -238,10 +232,10 @@ of named pipes, should your platform support it:
 @example
 mkfifo intermediate1.mpg
 mkfifo intermediate2.mpg
-ffmpeg -i input1.avi -sameq -y intermediate1.mpg < /dev/null &
-ffmpeg -i input2.avi -sameq -y intermediate2.mpg < /dev/null &
+avconv -i input1.avi -same_quant -y intermediate1.mpg < /dev/null &
+avconv -i input2.avi -same_quant -y intermediate2.mpg < /dev/null &
 cat intermediate1.mpg intermediate2.mpg |\
-ffmpeg -f mpeg -i - -sameq -vcodec mpeg4 -acodec libmp3lame output.avi
+avconv -f mpeg -i - -same_quant -c:v mpeg4 -acodec libmp3lame output.avi
 @end example
 
 Similarly, the yuv4mpegpipe format, and the raw video, raw audio codecs also
@@ -260,15 +254,15 @@ mkfifo temp2.a
 mkfifo temp2.v
 mkfifo all.a
 mkfifo all.v
-ffmpeg -i input1.flv -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 - > temp1.a < /dev/null &
-ffmpeg -i input2.flv -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 - > temp2.a < /dev/null &
-ffmpeg -i input1.flv -an -f yuv4mpegpipe - > temp1.v < /dev/null &
-@{ ffmpeg -i input2.flv -an -f yuv4mpegpipe - < /dev/null | tail -n +2 > temp2.v ; @} &
+avconv -i input1.flv -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 - > temp1.a < /dev/null &
+avconv -i input2.flv -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 - > temp2.a < /dev/null &
+avconv -i input1.flv -an -f yuv4mpegpipe - > temp1.v < /dev/null &
+@{ avconv -i input2.flv -an -f yuv4mpegpipe - < /dev/null | tail -n +2 > temp2.v ; @} &
 cat temp1.a temp2.a > all.a &
 cat temp1.v temp2.v > all.v &
-ffmpeg -f u16le -acodec pcm_s16le -ac 2 -ar 44100 -i all.a \
+avconv -f u16le -acodec pcm_s16le -ac 2 -ar 44100 -i all.a \
        -f yuv4mpegpipe -i all.v \
-       -sameq -y output.flv
+       -same_quant -y output.flv
 rm temp[12].[av] all.[av]
 @end example
 
@@ -304,7 +298,7 @@ the silver bullet that solves this problem, feel free to shoot it at us.
 
 We strongly recommend you to move over from MSVC++ to MinGW tools.
 
- at section Can I use Libav or libavcodec under Windows?
+ at section Can I use Libav under Windows?
 
 Yes, but the Cygwin or MinGW tools @emph{must} be used to compile Libav.
 Read the @emph{Windows} section in the Libav documentation to find more
@@ -314,7 +308,7 @@ information.
 
 No. These tools are too bloated and they complicate the build.
 
- at section Why not rewrite ffmpeg in object-oriented C++?
+ at section Why not rewrite Libav in object-oriented C++?
 
 Libav is already organized in a highly modular manner and does not need to
 be rewritten in a formal object language. Further, many of the developers
@@ -327,7 +321,7 @@ Yes, as long as the code is optional and can easily and cleanly be placed
 under #if CONFIG_GPL without breaking anything. So for example a new codec
 or filter would be OK under GPL while a bug fix to LGPL code would not.
 
- at section I'm using libavcodec from within my C++ application but the linker complains about missing symbols which seem to be available.
+ at section I'm using Libav from within my C++ application but the linker complains about missing symbols which seem to be available.
 
 Libav is a pure C project, so to use the libraries within your C++ application
 you need to explicitly state that you are using a C library. You can do this by



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