ARM+FPGA开发板基于FFMPEG的网络视频播放终端——米尔NXP I.MX 8M

2023-04-13 来源：EEWORLD

ARM+FPGA开发板基于FFMPEG的网络视频播放终端——米尔NXP I.MX 8M MINI+ARTIX-7处理器开发板

本篇测评由优秀测评者“qinyunti”提供。

01.前言

米尔这款ARM+fpga开发板具备高性能的ARM MPU+多媒体能力，采用i.MX 8M Mini+Artix-7处理器，特别适合多媒体终端开发。本篇就体验搭建ffmpeg开发环境，并进行性能测试，进行视频播放，演示网络视频播放器等。

02.编译过程

交叉编译

./configure --cross-prefix=aarch64-linux-gnu- --enable-cross-compile --target-os=linux --cc=aarch64-linux-gnu-gcc --arch=arm64 --prefix=/home/lhj/opt/ffmpeg/board --enable-ffmpeg --disable-armv5te --disable-armv6 --disable-armv6t2

WARNING: aarch64-linux-gnu-pkg-config not found, library detection may fail.

make

make install

生成文件如下

•

lhj@lhj:~/FFmpeg$ tree /home/lhj/opt/ffmpeg/board/

/home/lhj/opt/ffmpeg/board/

|-- bin

| |-- ffmpeg

| `-- ffprobe

|-- include

| |-- libavcodec

| | |-- ac3_parser.h

| | |-- adts_parser.h

| | |-- avcodec.h

| | |-- avdct.h

| | |-- avfft.h

| | |-- bsf.h

| | |-- codec.h

| | |-- codec_desc.h

| | |-- codec_id.h

| | |-- codec_par.h

| | |-- d3d11va.h

| | |-- defs.h

| | |-- dirac.h

| | |-- dv_profile.h

| | |-- dxva2.h

| | |-- jni.h

| | |-- mediacodec.h

| | |-- packet.h

| | |-- qsv.h

| | |-- vdpau.h

| | |-- version.h

| | |-- version_major.h

| | |-- videotoolbox.h

| | |-- vorbis_parser.h

| | `-- xvmc.h

| |-- libavdevice

| | |-- avdevice.h

| | |-- version.h

| | `-- version_major.h

| |-- libavfilter

| | |-- avfilter.h

| | |-- buffersink.h

| | |-- buffersrc.h

| | |-- version.h

| | `-- version_major.h

| |-- libavformat

| | |-- avformat.h

| | |-- avio.h

| | |-- version.h

| | `-- version_major.h

| |-- libavutil

| | |-- adler32.h

| | |-- aes.h

| | |-- aes_ctr.h

| | |-- ambient_viewing_environment.h

| | |-- attributes.h

| | |-- audio_fifo.h

| | |-- avassert.h

| | |-- avconfig.h

| | |-- avstring.h

| | |-- avutil.h

| | |-- base64.h

| | |-- blowfish.h

| | |-- bprint.h

| | |-- bswap.h

| | |-- buffer.h

| | |-- camellia.h

| | |-- cast5.h

| | |-- channel_layout.h

| | |-- common.h

| | |-- cpu.h

| | |-- crc.h

| | |-- csp.h

| | |-- des.h

| | |-- detection_bbox.h

| | |-- dict.h

| | |-- display.h

| | |-- dovi_meta.h

| | |-- downmix_info.h

| | |-- encryption_info.h

| | |-- error.h

| | |-- eval.h

| | |-- ffversion.h

| | |-- fifo.h

| | |-- file.h

| | |-- film_grain_params.h

| | |-- frame.h

| | |-- hash.h

| | |-- hdr_dynamic_metadata.h

| | |-- hdr_dynamic_vivid_metadata.h

| | |-- hmac.h

| | |-- hwcontext.h

| | |-- hwcontext_cuda.h

| | |-- hwcontext_d3d11va.h

| | |-- hwcontext_drm.h

| | |-- hwcontext_dxva2.h

| | |-- hwcontext_mediacodec.h

| | |-- hwcontext_opencl.h

| | |-- hwcontext_qsv.h

| | |-- hwcontext_vaapi.h

| | |-- hwcontext_vdpau.h

| | |-- hwcontext_videotoolbox.h

| | |-- hwcontext_vulkan.h

| | |-- imgutils.h

| | |-- intfloat.h

| | |-- intreadwrite.h

| | |-- lfg.h

| | |-- log.h

| | |-- lzo.h

| | |-- macros.h

| | |-- mastering_display_metadata.h

| | |-- mathematics.h

| | |-- md5.h

| | |-- mem.h

| | |-- motion_vector.h

| | |-- murmur3.h

| | |-- opt.h

| | |-- parseutils.h

| | |-- pixdesc.h

| | |-- pixelutils.h

| | |-- pixfmt.h

| | |-- random_seed.h

| | |-- rational.h

| | |-- rc4.h

| | |-- replaygain.h

| | |-- ripemd.h

| | |-- samplefmt.h

| | |-- sha.h

| | |-- sha512.h

| | |-- spherical.h

| | |-- stereo3d.h

| | |-- tea.h

| | |-- threadmessage.h

| | |-- time.h

| | |-- timecode.h

| | |-- timestamp.h

| | |-- tree.h

| | |-- twofish.h

| | |-- tx.h

| | |-- uuid.h

| | |-- version.h

| | |-- video_enc_params.h

| | `-- xtea.h

| |-- libswresample

| | |-- swresample.h

| | |-- version.h

| | `-- version_major.h

| `-- libswscale

| |-- swscale.h

| |-- version.h

| `-- version_major.h

|-- lib

| |-- libavcodec.a

| |-- libavdevice.a

| |-- libavfilter.a

| |-- libavformat.a

| |-- libavutil.a

| |-- libswresample.a

| |-- libswscale.a

| `-- pkgconfig

| |-- libavcodec.pc

| |-- libavdevice.pc

| |-- libavfilter.pc

| |-- libavformat.pc

| |-- libavutil.pc

| |-- libswresample.pc

| `-- libswscale.pc

`-- share

|-- doc

| `-- ffmpeg

| |-- bootstrap.min.css

| |-- default.css

| |-- developer.html

| |-- faq.html

| |-- fate.html

| |-- ffmpeg-all.html

| |-- ffmpeg-bitstream-filters.html

| |-- ffmpeg-codecs.html

| |-- ffmpeg-devices.html

| |-- ffmpeg-filters.html

| |-- ffmpeg-formats.html

| |-- ffmpeg-protocols.html

| |-- ffmpeg-resampler.html

| |-- ffmpeg-scaler.html

| |-- ffmpeg-utils.html

| |-- ffmpeg.html

| |-- ffprobe-all.html

| |-- ffprobe.html

| |-- general.html

| |-- git-howto.html

| |-- libavcodec.html

| |-- libavdevice.html

| |-- libavfilter.html

| |-- libavformat.html

| |-- libavutil.html

| |-- libswresample.html

| |-- libswscale.html

| |-- mailing-list-faq.html

| |-- nut.html

| |-- platform.html

| `-- style.min.css

|-- ffmpeg

| |-- examples

| | |-- Makefile

| | |-- README

| | |-- avio_list_dir.c

| | |-- avio_reading.c

| | |-- decode_audio.c

| | |-- decode_video.c

| | |-- demuxing_decoding.c

| | |-- encode_audio.c

| | |-- encode_video.c

| | |-- extract_mvs.c

| | |-- filter_audio.c

| | |-- filtering_audio.c

| | |-- filtering_video.c

| | |-- http_multiclient.c

| | |-- hw_decode.c

| | |-- metadata.c

| | |-- muxing.c

| | |-- qsv_transcode.c

| | |-- qsvdec.c

| | |-- remuxing.c

| | |-- resampling_audio.c

| | |-- scaling_video.c

| | |-- transcode_aac.c

| | |-- transcoding.c

| | |-- vaapi_encode.c

| | `-- vaapi_transcode.c

| |-- ffprobe.xsd

| |-- libvpx-1080p.ffpreset

| |-- libvpx-1080p50_60.ffpreset

| |-- libvpx-360p.ffpreset

| |-- libvpx-720p.ffpreset

| `-- libvpx-720p50_60.ffpreset

`-- man

|-- man1

| |-- ffmpeg-all.1

| |-- ffmpeg-bitstream-filters.1

| |-- ffmpeg-codecs.1

| |-- ffmpeg-devices.1

| |-- ffmpeg-filters.1

| |-- ffmpeg-formats.1

| |-- ffmpeg-protocols.1

| |-- ffmpeg-resampler.1

| |-- ffmpeg-scaler.1

| |-- ffmpeg-utils.1

| |-- ffmpeg.1

| |-- ffprobe-all.1

| `-- ffprobe.1

`-- man3

|-- libavcodec.3

|-- libavdevice.3

|-- libavfilter.3

|-- libavformat.3

|-- libavutil.3

|-- libswresample.3

`-- libswscale.3

19 directories, 234 files

lhj@lhj:~/FFmpeg$

开发板上部署

将bin文件复制到windows下

cp /home/lhj/opt/ffmpeg/board/bin/* /mnt/d

将lib文件复制到windows下

cp /home/lhj/opt/ffmpeg/board/lib/* /mnt/d

再将上述lib文件*.a导入到开发板的/usr/lib目录下

将ffmpeg和ffprobe导入到~目录下

测试

chmod +x ffmpeg ffprobe

root@myd-jx8mma7:~# ./ffmpeg

built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)

configuration: --cross-prefix=aarch64-linux-gnu- --enable-cross-compile --target-os=linux --cc=aarch64-linux-gnu-gcc --arch=arm64 --prefix=/home/lhj/opt/ffmpeg/board --enable-ffmpeg --disable-armv5te --disable-armv6 --disable-armv6t2

libavutil 57. 44.100 / 57. 44.100

libavcodec 59. 60.100 / 59. 60.100

libavformat 59. 37.100 / 59. 37.100

libavdevice 59. 8.101 / 59. 8.101

libavfilter 8. 56.100 / 8. 56.100

libswscale 6. 8.112 / 6. 8.112

libswresample 4. 9.100 / 4. 9.100

Hyper fast Audio and Video encoder

usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

Use -h to get full help or, even better, run 'man ffmpeg'

root@myd-jx8mma7:~#

root@myd-jx8mma7:~# ./ffprobe

built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)

libavutil 57. 44.100 / 57. 44.100

libavcodec 59. 60.100 / 59. 60.100

libavformat 59. 37.100 / 59. 37.100

libavdevice 59. 8.101 / 59. 8.101

libavfilter 8. 56.100 / 8. 56.100

libswscale 6. 8.112 / 6. 8.112

libswresample 4. 9.100 / 4. 9.100

Simple multimedia streams analyzer

usage: ffprobe [OPTIONS] INPUT_FILE

You have to specify one input file.

Use -h to get full help or, even better, run 'man ffprobe'.

root@myd-jx8mma7:~#

性能测试

https://www.sample-videos.com/index.php#sample-mp4-video下下载测试视频改名为test.mp4

导入到开发板。

./ffmpeg -benchmark -i test.mp4 -f null -

打印如下

•

root@myd-jx8mma7:~# ffmpeg -benchmark -i test.mp4 -f null -

-sh: ffmpeg: command not found

root@myd-jx8mma7:~# ./ffmpeg -benchmark -i test.mp4 -f null -

built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)

libavutil 57. 44.100 / 57. 44.100

libavcodec 59. 60.100 / 59. 60.100

libavformat 59. 37.100 / 59. 37.100

libavdevice 59. 8.101 / 59. 8.101

libavfilter 8. 56.100 / 8. 56.100

libswscale 6. 8.112 / 6. 8.112

libswresample 4. 9.100 / 4. 9.100

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':

Metadata:

major_brand : isom

minor_version : 512

compatible_brands: isomiso2avc1mp41

creation_time : 1970-01-01T00:00:00.000000Z

encoder : Lavf53.24.2

Duration: 00:02:50.86, start: 0.000000, bitrate: 1474 kb/s

Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 1086 kb/s, 25 fps, 25 tbr, 12800 tbn (default)

Metadata:

creation_time : 1970-01-01T00:00:00.000000Z

handler_name : VideoHandler

vendor_id : [0][0][0][0]

Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 383 kb/s (default)

Metadata:

creation_time : 1970-01-01T00:00:00.000000Z

handler_name : SoundHandler

vendor_id : [0][0][0][0]

Stream mapping:

Stream #0:0 -> #0:0 (h264 (native) -> wrapped_avframe (native))

Stream #0:1 -> #0:1 (aac (native) -> pcm_s16le (native))

Press [q] to stop, [?] for help

Output #0, null, to 'pipe:':

Metadata:

major_brand : isom

minor_version : 512

compatible_brands: isomiso2avc1mp41

encoder : Lavf59.37.100

Stream #0:0(und): Video: wrapped_avframe, yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn (default)

Metadata:

creation_time : 1970-01-01T00:00:00.000000Z

handler_name : VideoHandler

vendor_id : [0][0][0][0]

encoder : Lavc59.60.100 wrapped_avframe

Stream #0:1(und): Audio: pcm_s16le, 48000 Hz, 5.1, s16, 4608 kb/s (default)

Metadata:

creation_time : 1970-01-01T00:00:00.000000Z

handler_name : SoundHandler

vendor_id : [0][0][0][0]

encoder : Lavc59.60.100 pcm_s16le

frame= 4271 fps=222 q=-0.0 Lsize=N/A time=00:02:50.83 bitrate=N/A speed=8.87x

video:2002kB audio:96108kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

bench: utime=67.061s stime=2.796s rtime=19.272s

bench: maxrss=40720kB

root@myd-jx8mma7:~#

对比在PC上的测试结果

bench: utime=8.169s

bench: maxrss=107384kB

开板上大概是PC上2.5分之一的效率。这相对对于2th Gen Intel(R) Core(TM) i5-12500H 2.50 GHz处理器切实固态硬盘的电脑来说，嵌入式开发板的性能已经算不错了，单纯针对这一点几乎可以媲美PC使用了。

03.网络视频点播终端

./ffmpeg -re -i test.mp4 -an -vcodec copy -f rtp rtp://192.168.2.100:5004

打印如下

root@myd-jx8mma7:~# ./ffmpeg -re -i test.mp4 -an -vcodec copy -f rtp rtp://192.168.2.100:5004

built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)

libavutil 57. 44.100 / 57. 44.100

libavcodec 59. 60.100 / 59. 60.100

libavformat 59. 37.100 / 59. 37.100

libavdevice 59. 8.101 / 59. 8.101

libavfilter 8. 56.100 / 8. 56.100

libswscale 6. 8.112 / 6. 8.112

libswresample 4. 9.100 / 4. 9.100

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':

Metadata:

major_brand : isom

minor_version : 512

compatible_brands: isomiso2avc1mp41

creation_time : 1970-01-01T00:00:00.000000Z

encoder : Lavf53.24.2

Duration: 00:02:50.86, start: 0.000000, bitrate: 1474 kb/s

Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 1086 kb/s, 25 fps, 25 tbr, 12800 tbn (default)

Metadata:

creation_time : 1970-01-01T00:00:00.000000Z

handler_name : VideoHandler

vendor_id : [0][0][0][0]

Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 383 kb/s (default)

Metadata:

creation_time : 1970-01-01T00:00:00.000000Z

handler_name : SoundHandler

vendor_id : [0][0][0][0]

Output #0, rtp, to 'rtp://192.168.2.100:5004':

Metadata:

major_brand : isom

minor_version : 512

compatible_brands: isomiso2avc1mp41

encoder : Lavf59.37.100

Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 1086 kb/s, 25 fps, 25 tbr, 90k tbn (default)

Metadata:

creation_time : 1970-01-01T00:00:00.000000Z

handler_name : VideoHandler

vendor_id : [0][0][0][0]

SDP:

v=0

o=- 0 0 IN IP4 127.0.0.1

s=No Name

c=IN IP4 192.168.2.100

t=0 0

a=tool:libavformat 59.37.100

m=video 5004 RTP/AVP 96