Does not compile

[Nv7-GitHub]

When I run the encode_video example, I get the following output when compiling:

../../audio_codec_context.go:22:13: cannot use _Ctype_long(bitrate) (type _Ctype_long) as type _Ctype_longlong in assignment
../../audio_codec_context.go:24:19: cannot use chLayout.ctype() (type _Ctype_ulong) as type _Ctype_ulonglong in assignment
../../audio_codec_context_opt.go:9:28: cannot use _Ctype_long(bitrate) (type _Ctype_long) as type _Ctype_longlong in assignment
../../audio_codec_context_opt.go:21:34: cannot use _Ctype_ulong(layout) (type _Ctype_ulong) as type _Ctype_ulonglong in assignment
../../audio_frame.go:17:19: cannot use channelLayout.ctype() (type _Ctype_ulong) as type _Ctype_ulonglong in assignment
../../audio_frame.go:51:20: cannot use _Ctype_long(pts) (type _Ctype_long) as type _Ctype_longlong in assignment
../../codec_parametes.go:111:3: cannot use parms.ChannelLayout.ctype() (type _Ctype_ulong) as type _Ctype_ulonglong in field value
../../video_codec_context.go:50:19: cannot use _Ctype_long(calculateBitrate(int(context.height), int(context.framerate.num))) (type _Ctype_long) as type _Ctype_longlong in assignment
../../video_codec_context.go:61:20: cannot use _Ctype_long(calculateBitrate(int(context.height), int(context.framerate.num))) (type _Ctype_long) as type _Ctype_longlong in assignment
../../video_codec_context_opt.go:10:29: cannot use _Ctype_long(bitrate) (type _Ctype_long) as type _Ctype_longlong in assignment
../../video_codec_context_opt.go:10:29: too many errors

I noticed that you do not use pkg-config anywhere. Maybe this is your issue? For cross-platform support, this library most likely needs the line

#cgo pkg-config: <libavutil> <libavcodec>

where you would put libavutil, libavcodec, and other libraries based on if they are needed. Example code

[alexdogonin]

sory for late reply.
what version of libavcodec do you use? how did you install it?
I have not got such a problem.

#cgo pkg-config: these instructions are are in init.go

[alexdogonin]

the latest revision of code has many errors. use the latest tag instead.

[Nv7-GitHub]

I am on macOS, maybe compiling is different? I will try using the latest tag

[alexdogonin]

I don't know. I am on linux and I can't reproduce this error. try to install ffmpeg from source.

https://github.com/FFmpeg/FFmpeg/blob/1ad554a00b4df43605cc4d74b781aec0711afc20/libavcodec%2Favcodec.h#L576 bit_rate is an int64_t field. int64_t is a long type, not longlong.