libdrm | libdrm fork for open-source NVIDIA Tegra driver | GPU library
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libdrm fork for open-source NVIDIA Tegra driver
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QUESTION
I received a .raw
frame format (here is a sample) which contains the raw pixel values of a frame. And I've been told I can convert it to an image (.bmp or .png) using FFMpeg
using following command. However, when trying, it doesn't work.
ANSWER
Answered 2021-Jun-03 at 19:32Updated Answer
Now that we know the correct size and format, we can do the conversion easily with ImageMagick:
QUESTION
2 FFMPEG process
(1) generating a ffmpeg x11grab to a .mp4 (2) take the .mp4 and restream it simultaneously to multiple rtmp endpoints
ISSUE the generated file in (1) have this error "moov atom not found"
This is the command that generate (1) :
...ANSWER
Answered 2021-Jun-02 at 03:01With those changes, I'm able to acheive 3 to 4 stable delay ;)
LINE 79 of
I REPLACED
QUESTION
I am trying to add xfade
filter and the command is working but audio of second video is missing in output video.
command is -
...ANSWER
Answered 2021-May-27 at 21:54You didn't tell ffmpeg what to do with the audio so it just picked the audio from the first input (see stream selection).
Because you are using xfade you probably want to use acrossfade as shown in Merging multiple video files with ffmpeg and xfade filter:
QUESTION
I have 10 yuv input and each yuv is a frame of WxH (ip0_WxH.yuv, ip1_WxH.yuv, ..., ip9_WxH.yuv)
I need to concatenate all 10 to create a final yuv output with all 10 frames in this.
Option 1:
I used below link to do so. But final yuv output is not proper from frame number 2 onwards. Only first frame looks good. From frame number 2, the buffer address of chroma and luma has may be some wrong indexing and hence the display of the picture is wrong.
...ANSWER
Answered 2021-May-26 at 19:05Try different yuvformat.
As you are using yuv. So use either yuv422p
or yuv420p
depends upon your input yuv type.
Try this :
QUESTION
My objective is to play a 4 video montage of different duration, and loop all the videos until the duration of the longest video. However I couldn't figure out how to do this.
The duration of each of the inputs is:
- input1 (Duration: 00:00:00.24)
- input2 (Duration: 00:00:01.98)
- input3 (Duration: 00:00:04.02)
- input0 (Duration: 00:00:04.02)
The following code produces a video with duration equal to that of input1:
...ANSWER
Answered 2021-Apr-27 at 21:35My objective is to play a 4 video montage of different duration, and loop all the videos until the duration of the longest video. However I couldn't figure out how to do this.
Add -stream_loop -1
before each input except the longest input.
One of my confusion is; when i swap the location of
-stream_loop -1
and-i input0.mp4
, my output video has the duration ofinput2
.
You're using shortest=1
in xfade. With -stream_loop -1
before input0.mp4
the shortest input becomes input2 (Duration: 00:00:01.98).
QUESTION
I was trying to download specific timestamps from youtube using youtube-dl
as mentioned as mentioned here in the comments
ANSWER
Answered 2021-Mar-31 at 04:17Your ffmpeg version is too old. You need at least v4.0.
QUESTION
I'm trying to do video stream via RTMP to Instagram with FFMPEG
I'm able to do it to facebook and twitter, but instagram is an other beast...
when I create a live broadcast in instafeed or yellowduck I get a stream key
when I do this
...ANSWER
Answered 2021-Mar-19 at 23:58Wrap the output in quotes:
QUESTION
I want to merge mp3 files into one file using this command :
...ANSWER
Answered 2021-Mar-24 at 19:06You inputs are not actually MP3. These are actually WAV files named as MP3. So you can't use -c copy
. You can't copy pcm_s16le ("WAV") into MP3, so that's why you got the Invalid audio stream
error.
The concat protocol is almost useless. Use the concat demuxer or the concat filter. It doesn't matter which one you use in this case, so use whichever is more convenient for you.
concat demuxerMake
input.txt
containing:
QUESTION
I am trying to convert some mkv
videos with hevc
codec to avi
format. For this I run the following command:
ANSWER
Answered 2021-Mar-11 at 14:36AVI is not meant to be used with HEVC.
Use a modern output container format such as MP4, MOV, or MKV.
A workaround is to add the -vtag hvc1
output option.
QUESTION
I'm recording two stream by ffmpeg with this command:
...ANSWER
Answered 2021-Feb-27 at 09:11You should update your ffmpeg
. Apparently you installed it by default in ubuntu like this:
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