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fluent-ffmpeg display_aspect_ratio not changing
26 juin 2022, par juanmacHi everyone i'm trying to resize width and height of certain input with fluent ffmpeg to 768x1366 (basically to show it in vertical mode), so i have to also change its display_aspect_ratio which i happen to know is 0.562225476.
The issue here is that, according to fluent-ffmpeg doc, if i set a fix size, it wont change the aspect ratio, but it wont work either if I use
?to automatic mode. This is my code :

ffmpeg({source: req.file.path}) 
 .withFps(30)
 .toFormat('mp4')
 .size("768x?")
 .aspect(0.562225476)


Console command :

ffmpeg -i tmp/video.mp4 -y -r 30 -filter:v scale=w=768:h=1366 -f mp4 ./src/internal/media/video.mp4

So when i check the display_aspect_ratio with
ffprobeit's still 4:3 (as source file).

If I do not add the
.aspect()option, the command is exactly the same...so it's not considering it.

I've also tried :


ffmpeg({source: req.file.path}) 
 .withFps(30)
 .toFormat('mp4')
 .size('768x1366')
 .addOptions('-vf setdar=0.562225476')


And command here ends up being
ffmpeg -i tmp/video.mp4 -y -r 30 -filter:v scale=w=768:h=1366 -f mp4 -vf setdar=0.562225476 ./src/internal/media/video.mp4, so it seemed ok, but when I check with ffprobe it did not apply width and height changes.

The command I really need is some kind of :
ffmpeg -i video.mp4 -vf scale=768:1766,"setdar=0.562225476" video2.mp4which changes both, widthXheight and display_aspect_ratio

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ffmpeg - recorded video stream is not displayed in vlc media player
2 janvier 2024, par DeThe92I am trying to record an RTSP video stream from a Techage IP camera on my home network. I am using ffmpeg on my Raspberry Pi to do this and want to save the recorded video and audio data. My problem is that there seems to be video data coming through, but when I try to download the recorded file, there is only an audio stream, no video is displayed.


I try :


> ffmpeg -y -rtsp_transport tcp -re -i "rtsp://:554/user=admin&password=&channel=0&stream=0.sdp" -c copy -t 2 "output.avi"


The result output is :


ffmpeg version git-2016-07-02-0c6bedc Copyright (c) 2000-2016 the FFmpeg developers
 built with gcc 8 (Raspbian 8.3.0-6+rpi1)
 configuration: --extra-ldflags=-latomic --arch=armel --target-os=linux --enable-gpl --enable-omx --enable-omx-rpi --enable-libx264 --enable-nonfree
 libavutil 55. 28.100 / 55. 28.100
 libavcodec 57. 48.101 / 57. 48.101
 libavformat 57. 41.100 / 57. 41.100
 libavdevice 57. 0.102 / 57. 0.102
 libavfilter 6. 47.100 / 6. 47.100
 libswscale 4. 1.100 / 4. 1.100
 libswresample 2. 1.100 / 2. 1.100
 libpostproc 54. 0.100 / 54. 0.100
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, rtsp, from 'rtsp://192.168.178.60:554/user=admin&password=&channel=0&stream=0.sdp':
 Metadata:
 title : RTSP Session
 Duration: N/A, start: 0.000000, bitrate: N/A
 Stream #0:0: Video: hevc (Main), yuvj420p(pc), 3840x2160, 10 fps, 10 tbr, 90k tbn, 10 tbc
 Stream #0:1: Audio: pcm_alaw, 8000 Hz, 1 channels, s16, 64 kb/s
[avi @ 0x1c4a1a0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
 Last message repeated 1 times
Output #0, avi, to 'a0.avi':
 Metadata:
 INAM : RTSP Session
 ISFT : Lavf57.41.100
 Stream #0:0: Video: hevc, yuvj420p(pc), 3840x2160, q=2-31, 10 fps, 10 tbr, 20 tbn, 20 tbc
 Stream #0:1: Audio: pcm_alaw ([6][0][0][0] / 0x0006), 8000 Hz, mono, 64 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[avi @ 0x1c4a1a0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
frame= 3 fps=0.0 q=-1.0 size= 220kB time=00:00:00.60 bitrate=3002.0kbits/s speed=1.1
frame= 10 fps=9.9 q=-1.0 size= 303kB time=00:00:01.12 bitrate=2214.9kbits/s speed=1.1
frame= 15 fps=9.9 q=-1.0 size= 367kB time=00:00:01.60 bitrate=1878.5kbits/s speed=1.0
frame= 20 fps=9.9 q=-1.0 size= 431kB time=00:00:02.00 bitrate=1766.1kbits/s speed=0.9
frame= 20 fps=9.1 q=-1.0 Lsize= 433kB time=00:00:02.00 bitrate=1774.5kbits/s speed=0.908x
video:406kB audio:16kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.827832%


Does someone has any idea what could be wrong ? Thanks in advance.


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aarch64/vvc : Add apply_bdof
3 décembre 2024, par Zhao Zhiliaarch64/vvc : Add apply_bdof
Test on rpi 5 with gcc 12 :
apply_bdof_8_8x16_c : 7315.2 ( 1.00x)
apply_bdof_8_8x16_neon : 1876.8 ( 3.90x)
apply_bdof_8_16x8_c : 7170.5 ( 1.00x)
apply_bdof_8_16x8_neon : 1752.8 ( 4.09x)
apply_bdof_8_16x16_c : 14695.2 ( 1.00x)
apply_bdof_8_16x16_neon : 3490.5 ( 4.21x)
apply_bdof_10_8x16_c : 7371.5 ( 1.00x)
apply_bdof_10_8x16_neon : 1863.8 ( 3.96x)
apply_bdof_10_16x8_c : 7172.0 ( 1.00x)
apply_bdof_10_16x8_neon : 1766.0 ( 4.06x)
apply_bdof_10_16x16_c : 14551.5 ( 1.00x)
apply_bdof_10_16x16_neon : 3576.0 ( 4.07x)
apply_bdof_12_8x16_c : 7236.5 ( 1.00x)
apply_bdof_12_8x16_neon : 1863.8 ( 3.88x)
apply_bdof_12_16x8_c : 7316.5 ( 1.00x)
apply_bdof_12_16x8_neon : 1758.8 ( 4.16x)
apply_bdof_12_16x16_c : 14691.2 ( 1.00x)
apply_bdof_12_16x16_neon : 3480.5 ( 4.22x)
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