I'm trying to use ffmpeg to cut out part of an avi file.
I know similar questions have been asked before, but i've trawled through loads of other posts and I can't see where I'm going wrong.
The command line args i'm using to test on a 7 second video is:
-ss 00:00:01 -t 00:00:01 -i "C:\recordings\2013-09-11\Camera 1\Camera 1_2013-09-11_22-23-43.avi" -vcodec copy -acodec copy "I:\clip2.avi"
The output is:
ffmpeg version N-56254-gb7bd688 Copyright (c) 2000-2013 the FFmpeg developers built on Sep 12 2013 21:00:14 with gcc 4.7.3 (GCC) configuration:
--enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 43.100 / 52. 43.100
libavcodec 55. 31.101 / 55. 31.101
libavformat 55. 16.102 / 55. 16.102
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 84.100 / 3. 84.100
libswscale 2. 5.100 / 2. 5.100
libswresample 0. 17.103 / 0. 17.103
libpostproc 52. 3.100 / 52. 3.100
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, avi, from 'C:\recordings\2013-09-11\Camera 1\Camera 1_2013-09-11_22-23-43.avi':
Duration: 00:00:07.03, start: 0.000000, bitrate: 787 kb/s
Stream #0:0: Video: msmpeg4v3 (DIV3 / 0x33564944), yuv420p, 800x448, 30 fps, 30 tbr, 30 tbn, 30 tbc
Stream #0:1: Audio: adpcm_ms ([2][0][0][0] / 0x0002), 44100 Hz, mono, s16, 176 kb/s
Output #0, avi, to 'I:\clip2.avi':
Metadata:
ISFT : Lavf55.16.102
Stream #0:0: Video: msmpeg4v3 (DIV3 / 0x33564944), yuv420p, 800x448, q=2-31, 30 fps, 30 tbn, 30 tbc
Stream #0:1: Audio: adpcm_ms ([2][0][0][0] / 0x0002), 44100 Hz, mono, 176 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 88 fps=0.0 q=-1.0 Lsize= 226kB time=00:00:02.03 bitrate= 908.7kbits/s
video:146kB audio:66kB subtitle:0 global headers:0kB muxing overhead 6.345259%
I end up with a clip which is 3 seconds long !!!??
In the output I can see that the -ss flag is completely ignored.
Can anyone see where I'm going wrong?
Thanks
Some tips here: https://trac.ffmpeg.org/wiki/Seeking%20with%20FFmpeg
See "Fast Seeking" vs "Accurate Seeking". For accurate seeking:
-ss must come AFTER -i
I suspect your input frames fall outside any keyframes so "Fast Seeking" (-ss before -i) fails.
Also -t normally takes as its input a number of frames, I'm not sure if it accepts a timecode. Consider using -t 1 instead or -to 00:00:02 instead (note: -to, not -t).
EDIT: slhck is right regarding -t versus -vframes, see comment.
-i is for duration.
for example if you want 5 seconds video, Should write
-ss 00:00:01 -t 00:00:05 -i "C:\recordings\2013-09-11\Camera 1\Camera 1_2013-09-11_22-23-43.avi" -vcodec copy -acodec copy "I:\clip2.avi"
-ss is the offset when you write -ss 00:00:01 that Leaves to you 6 seconds
when write -t 00:00:01 that's make a video with 1 second not 3 seconds.
Just don't use codec copy command. delete "-vcodec copy -acodec copy" and try you are will get exact copy times
Related
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.
Converting more yuv frames to one yuv frame
cat *.yuv > movie.yuv
Option 2:
I tried to use FFMPEG to concatenate the yuvs together : https://trac.ffmpeg.org/wiki/Concatenate
$ cat mylist.txt
file 'ip0_WxH.yuv'
file 'ip1_WxH.yuv'
file 'ip2_WxH.yuv'
Desktop/danny$ ffmpeg -f rawvideo -f concat -safe 0 -i myfile.txt -c out.yuv
but got this error:
...
Trailing options were found on the commandline.
[IMGUTILS # 0x7fff4d92d720] Picture size 0x0 is invalid
[concat # 0x558b6c335900] Impossible to open 'ip0_WxH.yuv'
myfile.txt: Invalid argument
Can any one suggest the ffmpeg command to concatenate these YUVs together.
UPDATE:
As per the first answer suggested by llogan,
I used below command:
ffmpeg -f image2 -c:v rawvideo -pixel_format rgb24 -video_size 1344x968 -i ip%d_WxH.yuv output.yuv
Output
~/Desktop/danny$ ffmpeg -f image2 -c:v rawvideo -pixel_format rgb24 -video_size 1344x968 -i ip%d_WxH.yuv output.yuv
ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Input #0, image2, from ' ip%d_WxH.yuv':
Duration: 00:00:00.16, start: 0.000000, bitrate: N/A
Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1344x968, 25 fps, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> rawvideo (native))
Press [q] to stop, [?] for help
[rawvideo # 0x5623405f30c0] Invalid buffer size, packet size 2132928 < expected frame_size 3902976
Error while decoding stream #0:0: Invalid argument
[rawvideo # 0x5623405f30c0] Invalid buffer size, packet size 2132928 < expected frame_size 3902976
Error while decoding stream #0:0: Invalid argument
[rawvideo # 0x5623405f30c0] Invalid buffer size, packet size 2132928 < expected frame_size 3902976
Error while decoding stream #0:0: Invalid argument
[rawvideo # 0x5623405f30c0] Invalid buffer size, packet size 2132928 < expected frame_size 3902976
Error while decoding stream #0:0: Invalid argument
Finishing stream 0:0 without any data written to it.
Output #0, rawvideo, to 'output.yuv':
Metadata:
encoder : Lavf57.83.100
Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1344x968, q=2-31, 780595 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc57.107.100 rawvideo
frame= 0 fps=0.0 q=0.0 Lsize= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
Conversion failed!
Try different yuvformat.
As you are using yuv. So use either yuv422p or yuv420p depends upon your input yuv type.
Try this :
ffmpeg -f image2 -c:v rawvideo -pixel_format yuv420p -video_size 1344x968 -i ip%d_WxH.yuv out.yuv
I am trying to encode a video with FFMPEG x265, put it into MPEG2 TS and then stream it over UDP. Then receive on another PC and save it. Perform PSNR.
The encoding works fine, but when I try to stream I get the error:
[mpegts # 00000000050b0520] HEVC bitstream error, startcode missing, size 1436 data 00000100
Step 1- Encoding:
ffmpeg -re -i test.ts -r 25 -b:v 2500k -preset medium -c:v libx265 -x265-params crf=27 -y -f mpegts test1.ts
No error, everything fine.
Step 2- Streaming:
Start code missing.
ffmpeg -re -i test1.ts -c copy -f mpegts udp://172.18.60.47:1234
ffmpeg version N-68441-g4fa42e0 Copyright (c) 2000-2014 the FFmpeg developers
built on Dec 14 2014 22:13:03 with gcc 4.9.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnut
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --e
modplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsc
r --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zl
libavutil 54. 15.100 / 54. 15.100
libavcodec 56. 14.100 / 56. 14.100
libavformat 56. 15.105 / 56. 15.105
libavdevice 56. 3.100 / 56. 3.100
libavfilter 5. 3.101 / 5. 3.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, mpegts, from 'test1.ts':
Duration: 00:00:10.12, start: 1.480000, bitrate: 456 kb/s
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100]: Video: hevc (Main) ([36][0][0][0] / 0x0024), yuv420p(tv), 1280x720, 25 fps, 25 tbr, 90k tbn, 25 tbc
Output #0, mpegts, to 'udp://172.18.60.47:1234':
Metadata:
encoder : Lavf56.15.105
Stream #0:0: Video: hevc ([36][0][0][0] / 0x0024), yuv420p, 1280x720, q=2-31, 25 fps, 25 tbr, 90k tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
**[mpegts # 0000000004ed7320] HEVC bitstream error, startcode missing, size 2462 data 00000102**
[mpegts # 0000000004ed7320] HEVC bitstream error, startcode missing, size 302 data 00000102
[mpegts # 0000000004ed7320] HEVC bitstream error, startcode missing, size 134 data 00000100
[mpegts # 0000000004ed7320] HEVC bitstream error, startcode missing, size 149 data 00000100
[mpegts # 0000000004ed7320] HEVC bitstream error, startcode missing, size 5107 data 00000102
[mpegts # 0000000004ed7320] HEVC bitstream error, startcode missing, size 1331 data 00000102
[mpegts # 0000000004ed7320] HEVC bitstream error, startcode missing, size 341 data 00000100
frame= 8 fps=0.0 q=-1.0 Lsize= 37kB time=00:00:00.24 bitrate=1278.4kbits/s
video:34kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 9.718209%
Received signal 2: terminating.
When I do the steps above with x264 everything works fine. I can stream the video and I can receive it on the other side. Any idea what is wrong? Is this a BUG?
Commands for x264:
ffmpeg -re -i test.ts -r 25 -b:v 2500k -preset medium -c:v libx264 -x264-params crf=27 -y -f mpegts test1.ts
ffmpeg -re -i test1.ts -c copy -f mpegts udp://172.18.60.47:1234
Thanks for the help!!
BR,
Rudi
I tried to just copy (a period of time of) an AVI-Video into another newly created AVI-file using ffmpeg's copy option.
(On Windows 32-bit)
ffmpeg -i "C:\Temp\zzz\myAvi.avi" -c copy -t 00:00:10 "C:\Temp\zzz\myAviNew.avi"
Why are the pictures flipped upside-down in the resulting file ?
(Also the generated new audio is a little distorted.)
Using the same command again on the newly created file will not flip them back again - the pictures stay upside down.
Why this? Is it a bug?
Console brings the following output:
ffmpeg version N-50911-g9efcfbe Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 13 2013 21:26:48 with gcc 4.7.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libg
sm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libo
pencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-li
bschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-lib
twolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enabl
e-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 19.100 / 52. 19.100
libavcodec 55. 0.100 / 55. 0.100
libavformat 55. 0.100 / 55. 0.100
libavdevice 54. 4.100 / 54. 4.100
libavfilter 3. 45.103 / 3. 45.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[avi # 02537ba0] non-interleaved AVI
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, avi, from 'C:\Temp\zzz\Hase.avi':
Duration: 00:00:35.92, start: 0.000000, bitrate: 171375 kb/s
Stream #0:0: Video: rawvideo, bgra, 768x576, 12 tbr, 12 tbn, 12 tbc
Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16
, 1411 kb/s
Output #0, avi, to 'C:\Temp\zzz\HaseNew.avi':
Metadata:
ISFT : Lavf55.0.100
Stream #0:0: Video: rawvideo, bgra, 768x576, q=2-31, 12 tbn, 12 tbc
Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, 141
1 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 11 fps=0.0 q=-1.0 size= 19162kB time=00:00:00.91 bitrate=171242.4kbit
frame= 16 fps= 12 q=-1.0 size= 27874kB time=00:00:01.33 bitrate=171255.5kbit
...
...
...
frame= 120 fps=5.4 q=-1.0 size= 209083kB time=00:00:09.99 bitrate=171280.6kbit
frame= 121 fps=5.5 q=-1.0 Lsize= 210834kB time=00:00:10.08 bitrate=171288.2kbi
ts/s
video:209088kB audio:1723kB subtitle:0 global headers:0kB muxing overhead 0.0112
76%
C:\WINDOWS\system32>
The issue might come from your input file. The copy does exactly what it says, it copies the bitstream from your input container to an output container. When an issue arise, most of the time it is because some data has not been passed from the input to the output, (such as metadata) since video data can't be modified using copy.
Regarding your specific issue, video files can contain metadata to specify the rotation to which be played to the video player.
To add that information back to the output container, you need to add the following attribute to the ouput.
-metadata:s:v:0 rotate=180
Your initial command should look like :
ffmpeg -i "C:\Temp\zzz\myAvi.avi" -c copy -t 00:00:10 -metadata:s:v:0 rotate=180 "C:\Temp\zzz\myAviNew.avi"
The question is simple: I don't want ffmpeg to create an animated GIF from given video stream, I want separate frames, each in GIF format. But when I set output file to something like frame%09d.gif ffmpeg tends to create an animation (and stores it exactly as frame%09d.gif). The same for -f gif option.
Of course, I could save PNGs and use ImageMagic's convert utility to transform them to GIFs, but I don't want any additional invocation overhead because I'm dealing with live streams and going to crunch large amounts of data.
Here is what I do, nothing special:
ffmpeg -i http://brightcove03-f.akamaihd.net/valgbodmandag1378107345_1_300k#80362 -f gif -y frame_%09d.gif
ffmpeg version N-54643-g15cee5e Copyright (c) 2000-2013 the FFmpeg developers
built on Jul 11 2013 03:35:11 with gcc 4.7.3 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu
tls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --ena
ble-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger -
-enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-lib
vpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 39.100 / 52. 39.100
libavcodec 55. 18.102 / 55. 18.102
libavformat 55. 12.101 / 55. 12.101
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 80.100 / 3. 80.100
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
[flv # 00000000002cb700] Stream discovered after head already parsed
Input #0, flv, from 'http://brightcove03-f.akamaihd.net/valgbodmandag1378107345_1_300k#80362':
Metadata:
encoder : Lavf54.6.100
Duration: 00:00:00.00, start: 0.000000, bitrate: N/A
Stream #0:0: Video: h264 (Constrained Baseline), yuv420p, 480x270 [SAR 1:1 DAR 16:9], 25 tbr, 1k tbn, 50 tbc
Stream #0:1: Audio: aac, 44100 Hz, stereo, fltp, 128 kb/s
Stream #0:2: Data: none
[swscaler # 0000000004d051e0] No accelerated colorspace conversion found from yuv420p to bgr8.
Output #0, gif, to 'frame_%09d.gif':
Metadata:
encoder : Lavf55.12.101
Stream #0:0: Video: gif, bgr8, 480x270 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 100 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> gif)
Press [q] to stop, [?] for help
frame= 141 fps=130 q=-1.0 Lsize= 4960kB time=00:00:05.68 bitrate=7153.1kbits/s
video:5100kB audio:0kB subtitle:0 global headers:0kB muxing overhead -2.743247%
After all I get a file named "frame_%03d.gif", but instead I want to have several files "frame_001.gif", "frame_002.gif", etc.
Any ideas?
Thanks in advance.
When you use -f gif, you're forcing ffmpeg to use the GIF muxer, which writes the converted video stream into a single animated GIF file.
With recent ffmpeg:
Use this to force ffmpeg to mux every frame as a GIF to a separate file:
ffmpeg -i input -c:v gif -f image2 out%04d.gif
With ffmpeg 1.2.1 and lower:
When you leave out -f gif, ffmpeg correctly produces single images for each frame:
ffmpeg -i input output%04d.gif
If you're stuck on a version where you still have this bug (i.e. probably 2.0 and 2.1), ffmpeg doesn't follow the above syntax. Your only option here is to create PNG images instead:
ffmpeg -i input output%04d.png
And use ImageMagick to convert them:
for f in output*.png; do convert "$f" "${f%.png}.gif"; done
I'm using this command for ffmpeg:
ffmpeg -i 1.h264 -i ass1.ass -map 0 -map 1 -c copy test.mkv
The h264 file is 30 fps... the mkv plays at 25fps so it runs slow
The h264 come off my hd webcam. If i change the frame rate on the camera to 25 it works fine and 15fps wilk play at high speed. I can force the frame rate? Every if i need a different command line tool to change it that is acceptable. But if i could fix it form ffmpeg that would be ideal. I'm running the commands from vb.net.
command output
C:\Record\Normal\2013-06-27>c:\ffmpeg\bin\ffmpeg -i 1.h264 -i ass1.ass -map 0 -
map 1 -c copy test.mkv
ffmpeg version N-54207-ge59fb3f Copyright (c) 2000-2013 the FFmpeg developers
built on Jun 25 2013 21:55:00 with gcc 4.7.3 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --
enable-libxvid --enable-zlib
libavutil 52. 37.101 / 52. 37.101
libavcodec 55. 17.100 / 55. 17.100
libavformat 55. 10.100 / 55. 10.100
libavdevice 55. 2.100 / 55. 2.100
libavfilter 3. 77.101 / 3. 77.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
Input #0, h264, from '1.h264':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: h264 (Baseline), yuv420p, 1920x1088 [SAR 1:1 DAR 30:17],
25 fps, 25 tbr, 1200k tbn, 50 tbc
Input #1, ass, from 'ass1.ass':
Duration: N/A, bitrate: N/A
Stream #1:0: Subtitle: ssa
File 'test.mkv' already exists. Overwrite ? [y/N] y
Output #0, matroska, to 'test.mkv':
Metadata:
encoder : Lavf55.10.100
Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p, 1920x1088 [SAR 1:1 DA
R 30:17], q=2-31, 25 fps, 1k tbn, 1200k tbc
Stream #0:1: Subtitle: ssa
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #1:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 144 fps=0.0 q=-1.0 Lsize= 2451kB time=00:00:05.72 bitrate=3509.6kbits
/s
video:2447kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.125529%
Eg. To force the frame rate of the output file to 24 fps (-r):
ffmpeg -i input.avi -r 24 output.avi