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ffmpeg's Issues

Faster process possible?

Was anyone able to have faster porcessing with FFMPEG?
I have a bunch of GPU but it is using very little, and it is being VERY SLOW at making a video out of frames I collected.
Any insignt would be appreciated.
thanks

金山云ffmpeg对视频流按帧截图

hi,您们
麻烦确认一下,金山云FFmpeg是不是不支持对视频流进行截图的啊。
当进行截图命令:
./ffmpeg -i /root/gb_play_34020001001327000200_34020001001327000201.flv -ss 10 -y -f image2 -vframes 100 /root/imgs/img-%03d.jpg
提示:
[NULL @ 0x13682c0] Requested output format 'image2' is not a suitable output format

请问有其他解决方案么,可以支持H265视频流的截图

opencv无法打开rtmp格式的h265视频流

这个有解决办法吗
[ERROR:1] global /tmp/pip-req-build-hwenbn4e/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp (1077) open Could not find decoder for codec_id=0
[ERROR:1] global /tmp/pip-req-build-hwenbn4e/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp (1109) open VIDEOIO/FFMPEG: Failed to initialize VideoCapture

编译出错 use of undeclared identifier 'x264_bit_depth'

libavcodec/libx264.c:282:9: error: use of undeclared identifier 'x264_bit_depth'
if (x264_bit_depth > 8)
^
libavcodec/libx264.c:892:9: error: use of undeclared identifier 'x264_bit_depth'
if (x264_bit_depth == 8)
^
libavcodec/libx264.c:894:14: error: use of undeclared identifier 'x264_bit_depth'
else if (x264_bit_depth == 9)
^
libavcodec/libx264.c:896:14: error: use of undeclared identifier 'x264_bit_depth'
else if (x264_bit_depth == 10)

ffplay无法播放hevcpush的rtmp流

@fpzeng 您好,我参考《H.265 RTMP推流使用指南》上的方法,用libx265推了一个rtmp流,但ffplay播放时报错
[AVBSFContext @ 0x7fd6540b1f20] No start code is found. 0B f=0/0
rtmp://192.168.1.100/live/h265: could not find codec parameters

但若用libx264推流就没有问题。RTMP服务器我用的是nginx-rtmp-module, ffplay用的金山云ffmpeg编译的。另外,我还试了下ks-webplayer,也无法播放h265的rtmp流。请教下这该怎么解决呢?

万分感谢!

生成ffplay,ffmpeg时链接失败

LD ffplay_g
LD ffmpeg_g
Undefined symbols for architecture x86_64:
"_avpriv_dnxhd_get_frame_size", referenced from:
_dnxhd_parse in libavcodec.a(dnxhd_parser.o)
Undefined symbols for architecture x86_64:
"_avpriv_dnxhd_get_frame_size", referenced from:
_dnxhd_parse in libavcodec.a(dnxhd_parser.o)
"_ff_dnxhd_cid_table", referenced from:
_dnxhd_parse in libavcodec.a(dnxhd_parser.o)
"_ff_dnxhd_cid_table", referenced from:
_dnxhd_parse in libavcodec.a(dnxhd_parser.o)
"_ff_dnxhd_get_cid_table", referenced from:
_dnxhd_parse in libavcodec.a(dnxhd_parser.o)
"_ff_dnxhd_get_cid_table", referenced from:
_dnxhd_parse in libavcodec.a(dnxhd_parser.o)
ld: symbol(s) not found for architecture x86_64
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [ffplay_g] Error 1

use of undeclared identifier 'x264_bit_depth'

libavcodec/libx264.c:282:9: error: use of undeclared identifier 'x264_bit_depth'
if (x264_bit_depth > 8)
^
libavcodec/libx264.c:892:9: error: use of undeclared identifier 'x264_bit_depth'
if (x264_bit_depth == 8)
^
libavcodec/libx264.c:894:14: error: use of undeclared identifier 'x264_bit_depth'
else if (x264_bit_depth == 9)
^
libavcodec/libx264.c:896:14: error: use of undeclared identifier 'x264_bit_depth'
else if (x264_bit_depth == 10)
^

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