I'm trying to create an MP4 video with ffmpeg using JPEG2000 images as frames.
It works when the JPEG2000 is 8bpp, but I need it to work for at least 12 bits (ideally 12, but could be 16). The images are grayscale.
This is the command I'm using:
ffmpeg.exe -i imagen.jp2 video1.mp4
If I try to use -pix_fmt it says it's not supported by the encoder (it doesn't matter which format I use).
Some sample images can be found here:
http://ioingresodemanda.com/jp2.rar
I could also use any other tool, it doesn't need to be ffmpeg.
UPDATE: Adding ffmpeg output - http://pastebin.com/NyY3vgpz
Thanks in advance
If you are ok with mp4 file having a different video format the following will work
ffmpeg -strict -2 -i 12bit.jp2 -vcodec libx264 -an out.mp4
ffmpeg -strict -2 -i 12bit.jp2 -vcodec mpeg4 -an out.mp4
ffmpeg doesn't support 12-bit color. Most of the H264 profiles only support 8-bit color; a few support 10-bit, and only the super-obscure lossless Hi444PP profile supports 14-bit color. The x264 encoder does support some of the profiles with 10-bit color, but that's as far as it goes, and you have to explicitly enable it using the --bit-depth option:
http://git.videolan.org/?p=x264.git;a=commit;h=d058f37d9af8fc425fa0626695a190eb3aa032af
As noted in the commit, you may also want to keep in mind that "very few H.264 decoders support >8 bit depth currently".
Related
I'm trying upload a video exported by windows video editor to tiktok. It's a .mp4 file, and while it does upload, it isn't "TikTok'd", meaning, it only takes up the middle of screen. I was wondering what the ffmpeg command would be to output a video to TikToks specs.
Here's how it currently looks.
And here's how I want it to look.
Use the crop filter to convert horizontal to vertical video:
ffmpeg -i input.mp4 -vf "crop=ih*(9/16):ih" -crf 21 -c:a copy output.mp4
This will make it 9:16 aspect ratio.
-crf controls quality. See FFmpeg Wiki: H.264. 18-23 should be a good enough for a TikTok video.
Audio is stream copied (-c:a copy). If you get an error because your audio isn't compatible with MP4 then remove -c:a copy and AAC will be automatically used instead.
I am currently using ffmpeg to convert a custom container media format to mp4. It is straightforward to dump all the h.264 frames to one file and the aac audio to another. Then I can combine the two and create an mp4 file with ffmpeg.
The problem is that the video source isn't always perfect. From time to time frames are dropped or late etc. This causes an A/V sync issue since the pts is generated using a constant rate by ffmpeg. The source format I am using has the PTS value but I cant figure out a way to pass it to ffmpeg with the raw h.264 frames.
I suppose it would be possible to create a demuxer for the custom format, but it seems like a lot effort. I looked into ffmpeg's .nut container format thinking that I might be able to convert from the custom container to .nut first. Unfortunately it seems more complex than it looks on the surface.
It seems like there should be an easy way to pass a frame and its PTS value to ffmpeg, but I haven't come across it yet. Any help would be appreciated.
Here is the ffmpeg command I am using
ffmpeg -f s16le -ac 1 -ar 48k -i source.audio -framerate 20 -i source.video -c:a aac -b:a 64k -r 20 -c:v h264_nvenc -rc:v vbr_hq -cq:v 19 -n out.mp4
I'm trying to play some videos from my external hard drive onto my TV. However, it seems Planar 4:2:0 YUV 10 bit LE is too demanding for my TV. The video codec for my videos are h264. I have some other videos that are h264 and are able to run on my TV. When I open them on VLC, their decoded format is blank. The problem just occurs when the decoded format is YUV 10-bit.
I'm not too familiar with ffmpeg and I'm not sure what commands I need or if it's possible to change the decoded format.
Basic command to get 8-bit standard YUV 4:2:0 is
ffmpeg -i in.mp4 -map 0 -c copy -c:v libx264 -pix_fmt yuv420p +movflags +faststart out.mp4
i want convert video from any format to mp4. so i am using command:
ffmpeg -i ttt.mp4 -vcodec copy -acodec copy test.mp4
this is working perftectly but now i also add scale in this -s 320:240.
There also many other command for convert LIKE :
ffmpeg -i inputfile.avi -s 320x240 outputfile.avi
but after convert by this command video not play in html5 player
BUT this is not working so tell me in my command how i add scale;
So please provide me solution for this .
Thanks in advance.
You have several problems:
In your command, you have -vcodec copy you cannot scale video without reencoding.
In the command you randomly found on the Internet, they are using AVI, which is not HTML5-compatible.
What you should do is:
ffmpeg -i INPUT -s 320x240 -acodec copy OUT.mp4
Adding to Timothy_G:
Video copy will ignore the video filter chain of ffmpeg, so no scaling is available (man ffmpeg is a great source of information that you will not find on Google). Notice that once you start decoding-filtering-encoding (i.e., no copy) the process will be much slower (x100 time slower or even more). The libx264 is recommended if you want compatibility with all browsers.
$ ffmpeg -i INPUT -s 320x240 -threads 4 -c:a copy -c:v libx264 OUT.mp4
vp9 will provide nearly 50% extra bandwidth saving, but only for supported browsers (Firefox/Chrome), and the encoding will much slower compared to libx264 (that itself is much slower that v:c copy):
$ ffmpeg -i INPUT -s 320x240 -c:a copy -c:v vp9 OUT.webm
Notice that there is a set of formats (containers) accepted by browsers (most admit mp4, some also webm, ...) and for each format there is a set of audio/video codecs accepted. For example you can use mp3 or aac with an mp4 file (container), but not with webm files.
http://en.wikipedia.org/wiki/HTML5_video#Supported_video_formats
I have a raw YUV video file that I want to do some basic editing to in Adobe CS6 Premiere, but it won't recognize the file. I thought to use ffmpeg to convert it to something Premiere would take in, but I want this to be lossless because afterwards I will need it in YUV format again. I thought of avi, mov, and prores but I can't seem to figure out the proper command line to ffmpeg and how to ensure it is lossless.
Thanks for your help.
Yes, this is possible. It is normal that you can't open that raw video file since it is just raw data in one giant file, without any headers. So Adobe Premiere doesn't know what the size is, what framerate ect.
First make sure you downloaded the FFmpeg command line tool. Then after installing you can start converting by running a command with parameters. There are some parameters you have to fill in yourself before starting to convert:
What type of the YUV pixel format are you using? The most common format is YUV4:2:0 planar 8-bit (YUV420p). You can type ffmpeg -pix_fmts to get a list of all available formats.
What is the framerate? In my example I will use -r 25 fps.
What encoder do you want to use? The libx264 (H.264) encoder is a great one for lossless compression.
What is your framesize? In my example I will use -s 1920x1080
Then we get this command to do your compression.
ffmpeg -f rawvideo -vcodec rawvideo -s 1920x1080 -r 25 -pix_fmt yuv420p -i inputfile.yuv -c:v libx264 -preset ultrafast -qp 0 output.mp4
A little explanation of all other parameters:
With -f rawvideo you set the input format to a raw video container
With -vcodec rawvideo you set the input file as not compressed
With -i inputfile.yuv you set your input file
With -c:v libx264 you set the encoder to encode the video to libx264.
The -preset ultrafast setting is only speeding up the compression so your file size will be bigger than setting it to veryslow.
With -qp 0 you set the maximum quality. 0 is best, 51 is worst quality in our example.
Then output.mp4 is your new container to store your data in.
After you are done in Adobe Premiere, you can convert it back to a YUV file by inverting allmost all parameters. FFmpeg recognizes what's inside the mp4 container, so you don't need to provide parameters for the input.
ffmpeg -i input.mp4 -f rawvideo -vcodec rawvideo -pix_fmt yuv420p -s 1920x1080 -r 25 rawvideo.yuv