我花了一周的时间寻找一种简单且独立于平台的方法来将mp4文件流式传输到任何浏览器。如果浏览器不兼容,将使用渐进流(直接下载)方式。我的场景是这样的:
在浏览器incompatibility的情况下,支持
通过对苹果HLS、Adobe Flash Stream、微软平滑、RTSP和MPEG-DASH的研究,MPEG-DASH是比较合适的解决方案。但问题是MPEG-DASH迫使我将mp4文件拆分成单独的分段文件,这导致复制消耗空间来存储mp4文件,因为我必须在浏览器不兼容的情况下支持渐进流。因此,将单个mp4文件与分段的mp4文件存储在一起是不可避免的。
问题是:有没有办法在任何浏览器中以http流和渐进流的形式提供单个 mp4文件?
MPEG-DASH协议说它支持多路复用文件,但问题是dash.js不支持它。有没有其他的javascript播放器支持多路复用和单个mp4文件的字节范围请求?
欢迎提交我的场景条件的任何其他解决方案。谢谢。
发布于 2016-02-11 21:17:13
我认为所有主流浏览器都支持mp4。http://caniuse.com/#feat=mpeg4。你可以使用一个很好的旧的http服务器来传输它。只有当你需要像自适应比特率流,多语言,数字版权管理等花哨的东西时,才需要MPEG-DASH
。
如果您坚持使用MPEG-DASH
,那么只需在服务器端使用mp4box对mp4文件进行分段(只需执行一次)。结果不是多个mp4文件,而是以更适合流式传输的方式组织的单个mp4文件。
发布于 2016-02-08 03:18:22
是的,有一个解决方案。dash.js仅播放已打包的零碎mp4s。然而,来自电信Paristech的Cyril的这个项目将完成您想要的:
https://github.com/gpac/mp4box.js/
这是mp4box的js版本。它所能做的就是将你的非碎片化的mp4即时转换成媒体片段,然后这些媒体片段可以被提供给一个MSE sourceBuffer。他们有一个样例播放器,你可以复制它:
http://download.tsi.telecom-paristech.fr/gpac/mp4box.js/
干杯将会
发布于 2019-03-13 08:12:14
也许这会对你有所帮助:
#!/bin/bash
# THIS SCRIPT CONVERTS EVERY MP4 (IN THE CURRENT FOLDER AND SUBFOLDER) TO A MULTI-BITRATE VIDEO IN MP4-DASH
# For each file "videoname.mp4" it creates a folder "dash_videoname" containing a dash manifest file "stream.mpd" and subfolders containing video segments.
# Explanation:
# Validation tool:
# https://conformance.dashif.org/
# MDN reference:
# https://developer.mozilla.org/en-US/Apps/Fundamentals/Audio_and_video_delivery/Setting_up_adaptive_streaming_media_sources
# Add the following mime-types (uncommented) to .htaccess:
# AddType video/mp4 m4s
# AddType application/dash+xml mpd
# Use type="application/dash+xml"
# in html when using mp4 as fallback:
# <video data-dashjs-player loop="true" >
# <source src="/walking/walking.mpd" type="application/dash+xml">
# <source src="/walking/walking.mp4" type="video/mp4">
# </video>
# DASH.js
# https://github.com/Dash-Industry-Forum/dash.js
MYDIR=$(dirname $(readlink -f ${BASH_SOURCE[0]}))
SAVEDIR=$(pwd)
# Check programs
if [ -z "$(which ffmpeg)" ]; then
echo "Error: ffmpeg is not installed"
exit 1
fi
if [ -z "$(which MP4Box)" ]; then
echo "Error: MP4Box is not installed"
exit 1
fi
cd "$MYDIR"
TARGET_FILES=$(find ./ -maxdepth 1 -type f \( -name "*.mov" -or -name "*.mp4" \))
for f in $TARGET_FILES
do
fe=$(basename "$f") # fullname of the file
f="${fe%.*}" # name without extension
if [ ! -d "${f}" ]; then #if directory does not exist, convert
echo "Converting \"$f\" to multi-bitrate video in MPEG-DASH"
mkdir "${f}"
ffmpeg -y -i "${fe}" -c:a aac -b:a 192k -vn "${f}_audio.m4a"
ffmpeg -y -i "${fe}" -preset slow -tune film -vsync passthrough -write_tmcd 0 -an -c:v libx264 -x264opts 'keyint=25:min-keyint=25:no-scenecut' -crf 22 -maxrate 5000k -bufsize 12000k -pix_fmt yuv420p -f mp4 "${f}_5000.mp4"
ffmpeg -y -i "${fe}" -preset slow -tune film -vsync passthrough -write_tmcd 0 -an -c:v libx264 -x264opts 'keyint=25:min-keyint=25:no-scenecut' -crf 23 -maxrate 3000k -bufsize 6000k -pix_fmt yuv420p -f mp4 "${f}_3000.mp4"
ffmpeg -y -i "${fe}" -preset slow -tune film -vsync passthrough -write_tmcd 0 -an -c:v libx264 -x264opts 'keyint=25:min-keyint=25:no-scenecut' -crf 23 -maxrate 1500k -bufsize 3000k -pix_fmt yuv420p -f mp4 "${f}_1500.mp4"
ffmpeg -y -i "${fe}" -preset slow -tune film -vsync passthrough -write_tmcd 0 -an -c:v libx264 -x264opts 'keyint=25:min-keyint=25:no-scenecut' -crf 23 -maxrate 800k -bufsize 2000k -pix_fmt yuv420p -vf "scale=-2:720" -f mp4 "${f}_800.mp4"
ffmpeg -y -i "${fe}" -preset slow -tune film -vsync passthrough -write_tmcd 0 -an -c:v libx264 -x264opts 'keyint=25:min-keyint=25:no-scenecut' -crf 23 -maxrate 400k -bufsize 1000k -pix_fmt yuv420p -vf "scale=-2:540" -f mp4 "${f}_400.mp4"
# static file for ios and old browsers
ffmpeg -y -i "${fe}" -preset slow -tune film -vsync passthrough -write_tmcd 0 -c:a aac -b:a 160k -c:v libx264 -crf 23 -maxrate 2000k -bufsize 4000k -pix_fmt yuv420p -f mp4 "${f}/${f}.mp4"
rm -f ffmpeg*log*
# if audio stream does not exist, ignore it
if [ -e "${f}_audio.m4a" ]; then
MP4Box -dash-strict 2000 -rap -frag-rap -bs-switching no -profile "dashavc264:live" "${f}_5000.mp4" "${f}_3000.mp4" "${f}_1500.mp4" "${f}_800.mp4" "${f}_400.mp4" "${f}_audio.m4a" -out "${f}/${f}.mpd"
rm "${f}_5000.mp4" "${f}_3000.mp4" "${f}_1500.mp4" "${f}_800.mp4" "${f}_400.mp4" "${f}_audio.m4a"
else
MP4Box -dash-strict 2000 -rap -frag-rap -bs-switching no -profile "dashavc264:live" "${f}_5000.mp4" "${f}_3000.mp4" "${f}_1500.mp4" "${f}_800.mp4" "${f}_400.mp4" -out "${f}/${f}.mpd"
rm "${f}_5000.mp4" "${f}_3000.mp4" "${f}_1500.mp4" "${f}_800.mp4" "${f}_400.mp4"
fi
# create a jpg for poster. Use imagemagick or just save the frame directly from ffmpeg is you don't have cjpeg installed.
ffmpeg -i "${fe}" -ss 00:00:00 -vframes 1 -qscale:v 10 -n -f image2 - | cjpeg -progressive -quality 75 -outfile "${f}"/"${f}".jpg
fi
done
cd "$SAVEDIR"
https://stackoverflow.com/questions/35239044
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