diff --git a/doc/faq.texi b/doc/faq.texi index ef111c70e5..ff35c898dc 100644 --- a/doc/faq.texi +++ b/doc/faq.texi @@ -311,18 +311,18 @@ invoking ffmpeg with several @option{-i} options. For audio, to put all channels together in a single stream (example: two mono streams into one stereo stream): this is sometimes called to @emph{merge} them, and can be done using the -@url{https://ffmpeg.org/ffmpeg-filters.html#amerge, @code{amerge}} filter. +@url{ffmpeg-filters.html#amerge, @code{amerge}} filter. @item For audio, to play one on top of the other: this is called to @emph{mix} them, and can be done by first merging them into a single stream and then -using the @url{https://ffmpeg.org/ffmpeg-filters.html#pan, @code{pan}} filter to mix +using the @url{ffmpeg-filters.html#pan, @code{pan}} filter to mix the channels at will. @item For video, to display both together, side by side or one on top of a part of the other; it can be done using the -@url{https://ffmpeg.org/ffmpeg-filters.html#overlay, @code{overlay}} video filter. +@url{ffmpeg-filters.html#overlay, @code{overlay}} video filter. @end itemize @@ -333,19 +333,19 @@ There are several solutions, depending on the exact circumstances. @subsection Concatenating using the concat @emph{filter} -FFmpeg has a @url{https://ffmpeg.org/ffmpeg-filters.html#concat, +FFmpeg has a @url{ffmpeg-filters.html#concat, @code{concat}} filter designed specifically for that, with examples in the documentation. This operation is recommended if you need to re-encode. @subsection Concatenating using the concat @emph{demuxer} -FFmpeg has a @url{https://www.ffmpeg.org/ffmpeg-formats.html#concat, +FFmpeg has a @url{ffmpeg-formats.html#concat, @code{concat}} demuxer which you can use when you want to avoid a re-encode and your format doesn't support file level concatenation. @subsection Concatenating using the concat @emph{protocol} (file level) -FFmpeg has a @url{https://ffmpeg.org/ffmpeg-protocols.html#concat, +FFmpeg has a @url{ffmpeg-protocols.html#concat, @code{concat}} protocol designed specifically for that, with examples in the documentation. @@ -485,7 +485,7 @@ scaling adjusts the SAR to keep the DAR constant. If you want to stretch, or “unstretch”, the image, you need to override the information with the -@url{https://ffmpeg.org/ffmpeg-filters.html#setdar_002c-setsar, @code{setdar or setsar filters}}. +@url{ffmpeg-filters.html#setdar_002c-setsar, @code{setdar or setsar filters}}. Do not forget to examine carefully the original video to check whether the stretching comes from the image or from the aspect ratio information.