avcodec: Move STRIDE_ALIGN to internal.h

The next commit/bugfix will need it

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/mpegvideo_enc: dont use direct mode for unaligned input

Fixes Ticket3456

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
ffmpeg_opt: Check ist is valid before using it in audio_channels_map init

Fixes segfault and instead provides an error message
Fixes Ticket3465

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
swscale/x86/swscale: fix missing xmm clobbers in yuv2yuvX_sse3()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
ffmpeg: fix printing INT64_MIN pts at the end

Fixes Ticket3427

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>