Actually i am trying to compress raw video to MPEG-4 AVC/H.264 BD-compatible High Profile / Level 4.1 video.I am using ffmpeg.
ffmpeg -threads 2 -f rawvideo -pix_fmt bgr24 -re -s 720x576 -i - -threads 2 -vcodec libx264 -deinterlace -s 720x576 -coder 1 -flags +loop -cmp +chroma -partitions -parti8x8-parti4x4-partp8x8-partb8x8 -me_method dia -subq 1 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -b_strategy 1 -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -bf 3 -refs 1 -directpred 1 -trellis 0 -flags2 +bpyramid-mixed_refs+wpred-dct8x8+fastpskip-mbtree -wpredp 0 -b 3000k -g 300 -an -f flv -y -
it works (output video is 21MB for 1min) while using -f mp4 error shows (muxer does not seekabe output) any one help me. Is it right way to get it ah?
Thank you very much.
Actually the error message is correct.
If I understand the command line correctly, you want to do STDOUT. This is impossible for mp4, as mp4 is a file format which can't be written without seeking afterwards and updating the header/footer.
So change to mpegts or something else that can be written via a pipe.
Alternatively give the filename of the output file, then ffmpeg can write a mp4 file.
Related
hope someone could help me with this. Kinda new with ffmpeg and a bit stumped.
Given an input of a set of numbered images in a folder, I want to generate a video with each image shown for 60 seconds. I would love to use a default transition between each images.
The following code, correctly generates an mp4 without transitions:
ffmpeg -framerate 1/60 -pattern_type glob -i "*.png" -vcodec libx264 \
-pix_fmt yuv420p -r 30 -threads 4 -crf 25 -refs 1 -bf 0 -coder 0 -g 25 \
-keyint_min 15 -movflags +faststart no_audio_output.mp4
But when I try to add a default transition (supported in the version of ffmpeg I'm using that is the 5.1):
ffmpeg -framerate 1/60 -pattern_type glob -i "WC*.png" -filter_complex
xfade=transition=circleopen:duration=5:offset=55 -vcodec libx264 \
-pix_fmt yuv420p -r 30 -threads 4 -crf 25 -refs 1 -bf 0 -coder 0 -g 25 \
-keyint_min 15 -movflags +faststart no_audio_output.mp4
I have as error:
Cannot find a matching stream for unlabeled input pad 1 on filter Parsed_xfade_0
I googled a lot but still the solution is unclear. All the examples I found have been designed to deal with a slideshow/input with a define number of pieces while in my case the folder could contain any number of images.
Thanks all for your help!
I'm trying to get multiple snapshots of a single input file using Input Seeking.
I want to seek to different keyframes and save each to different output images.
I can use this using multiple calls:
ffmpeg -ss 280 -i sample.mp4 -aspect 1.7777777777778 -vframes 1 -qmax 9 -qmin 8 -bt 10000000 -y -pix_fmt yuv420p out1.jpg
ffmpeg -ss 300 -i sample.mp4 -aspect 1.7777777777778 -vframes 1 -qmax 9 -qmin 8 -bt 10000000 -y -pix_fmt yuv420p out2.jpg
ffmpeg -ss 302 -i sample.mp4 -aspect 1.7777777777778 -vframes 1 -qmax 9 -qmin 8 -bt 10000000 -y -pix_fmt yuv420p out3.jpg
Unfortunately I have to call ffmpeg programmatically using exec. Is there a way to batch process the tasks above? It has to use input seeking. Thanks.
i'm trying to play movie by convert to hls stream.
I convert movie to hls by ffmpeg using this command:
nice -n 19 /usr/bin/ffmpeg -y -i 9e36f618-5775-40ba-b045-66fd16badc3e.mkv -vf 'movie=/home/thanhtv/data/bitbucket/php/ps/public/img/default/phimsobiz.png [logo]; [in][logo] overlay=5:10' -flags -global_header -f segment -segment_format mpeg_ts -segment_list ./9e36f618-5775-40ba-b045-66fd16badc3e.m3u8 -r 22 -maxrate 2M -bufsize 1M -segment_time 20 -threads 12 -vcodec libx264 -acodec aac -refs 6 -coder 1 -sc_threshold 40 -flags +loop -me_range 16 -subq 7 -i_qfactor 0.71 -qcomp 0.6 -qdiff 4 -trellis 1 ./9e36f618-5775-40ba-b045-66fd16badc3e%09d.ts
but when i play it using hls js (this one) i get an error:
hls.js:5051 Uncaught DOMException: Failed to read the 'buffered' property from 'SourceBuffer': This SourceBuffer has been removed from the parent media source.
at r.onSBUpdateEnd (https://phimso.biz/assets/js/hls.js:5051:50)
with similar command i got another video play, but this one doesn't. I don't know why. Can any one help me please.
here is the movie
and here is the page i'm trying to play that movie (in hls of course)
https://phimso.biz/admin/test
(my english quite bad, so please forgive me if i made some grammar error)
I have a C++ application that records audio from my default input device, encodes it in AAC format and writes to a .aac file. I want to use HTTP Live Streaming to live stream this AAC file. According to this question, I have to create a FFMPEG script to split my audio file into several .ts files.
# bitrate, width, and height, you may want to change this
BR=512k
WIDTH=432
HEIGHT=240
input=${1}
# strip off the file extension
output=$(echo ${input} | sed 's/\..*//' )
# works for most videos
ffmpeg -y -i ${input} -f mpegts -acodec libmp3lame -ar 48000 -ab 64k -s ${WIDTH}x${HEIGHT} -vcodec libx264 -b ${BR} -flags +loop -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 -subq 7 -trellis 0 -refs 0 -coder 0 -me_range 16 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -bt 200k -maxrate ${BR} -bufsize ${BR} -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 30 -qmax 51 -qdiff 4 -level 30 -aspect ${WIDTH}:${HEIGHT} -g 30 -async 2 ${output}-iphone.ts
(It is slightly different in my case because I only work with audio)
Can I do so programmatically in C++ and if so, do I have to use a third-part library or does macOS provide native functions to do so ?
No, you don’t have to split it (you can put byte offsets into the m3u8) and no you don’t need to us a ts. HLS supports .aac files. Yes you can programmatically make an m3u8 without a library. C++ or literally any other programming language is capable.
I want to convert an avi file to 3gp with codec as mpeg4 simple profile level 0.But i am not able to do it with ffmpeg,it gives this error-Requested output format ‘-vcodec’ is not a suitable output format.how to fix this help!thanks in advance
note - the input avi is 720x480 generated from bmp images using ffmpeg with codec ffv1.the output 3gp should be of mpeg4 simple profile level 0
Original from: http://forum.videohelp.com/threads/322328-libfaac-encoding-with-ffmpeg
This worked for me:
tools/ffmpeg/./ffmpeg -i debug/assets/videos/sample_iPod.mp4 -acodec libvo_aacenc -vcodec libx264 debug/assets/videos/sample_iPod.3gp
Try this.. Hope this will help you
ffmpeg -i input.AVI -acodec libfaac -ab 128k -ar 44100 -s 704x400 -r 20 -vcodec libx264 -b 256000 -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 -me_method umh -subq 5 -trellis 1 -refs 2 -bf 1 -coder 1 -me_range 16 -g 300 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -bt 256000 -maxrate 4M -bufsize 4M -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -level 21 output.3gp
this will convert your avi to 3gp. Try different formats as input and output file as per your need
NOTE :- Change parameters as per your need like 'level'
You can try this:
ffmpeg -y -i test.mpeg -r 20 -s 352x288 -b 400k -acodec aac -strict experimental -ac 1 -ar 8000 -ab 24k test.3gp
Following code is working fine:
ffmpeg -y -i test.mpeg -r 20 -s 352x288 -b 400k -acodec aac -strict experimental -ac 1 -ar 8000 -ab 24k test.3gp
The guy wants it in mpeg4 codec not x264.
Here's how:
ffmpeg.exe -i input.avi -acodec libvo_aacenc -ab 64k -vcodec mpeg4 -s 320x240 -b:v 400k -r 23.976 output.3gp
In some phones 320x240 may seem stretchy, in that case use 320x180 instead