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Sur d’autres sites (4839)

  • How to concat two/many mp4 files(Mac OS X Lion 10.7.5) with different resolution, bit rate [on hold]

    3 septembre 2013, par praveen

    I have to concat different mp4 files into single mp4 file. i am using following ffmpeg command but this command is only working if both file is same(copy, or if all video property is same(codec, resolution,bitrate....) ) other wise result is unexpected video. (I am working on Mac OS X Lion 10.7.5)

    ffmpeg commad :

    ffmpeg -i images/1/output.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
    
ffmpeg -i images/1/Video2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
    
ffmpeg -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc output2.mp4

    console output :

    [mpegts @ 0x7f8c6c03d800] max_analyze_duration 5000000 reached at 5000000 microseconds
    

    
Input #0, mpegts, from 'concat:intermediate1.ts|intermediate2.ts':
    
Duration: 00:00:16.52, start: 1.400000, bitrate: 1342 kb/s
    
Program 1 
    
Metadata:
    
service_name    : Service01
    
service_provider: FFmpeg
    
Stream #0:0[0x100]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 1024x768 [SAR   1:1 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
    
Stream #0:1[0x101](und): Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 101 kb/s
    

    

    

    
Output #0, mp4, to 'output2.mp4':
    
Metadata:
    
encoder         : Lavf54.63.104
    
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1024x768 [SAR 1:1 DAR 4:3],      q=2-31, 25 fps, 90k tbn, 90k tbc
    
Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 101 kb/s
    
 Stream mapping:
    
Stream #0:0 -> #0:0 (copy)
    
Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
 frame=  586 fps=0.0 q=-1.0 Lsize=    2449kB time=00:00:20.11 bitrate= 997.4kbits/s    
    
 video:2210kB audio:225kB subtitle:0 global headers:0kB muxing overhead 0.578335%

    Please help

  • Change video resolution ffmpeg

    21 décembre 2015, par Lior

    I have videos with different resolution. I want that all of them will be in resolution of 480x320. I tried the command :

    ffmpeg -i %s_ann.mp4 -vf scale=480x320,setsar=1:1 %s_annShrink.mp4' %(dstfile,dstfile)

    but the output of the videos are files with the size of 0 kb.

    What I’m doing wrong ?

  • ffmpeg commands to concatenate different type and resolution videos into 1 video and can be played in android

    26 octobre 2015, par Aalap

    I want to concatinate 4 different videos of 4 different resolution and type into 1 video which can be played in android. I am using ffmpeg ported on android using https://github.com/guardianproject/android-ffmpeg

    So I have these 4 different types of videos
    1)

    ./ffmpeg -i 1.mp4 
    
Video: h264 (High), yuv420p, 1920x1080, 16959 kb/s, 29.85 fps, 90k tbr, 90k tbn, 180k tbc
    
Audio: aac, 48000 Hz, stereo, s16, 106 kb/s

    2)

    ffmpeg -i 2.mp4
    
Video: h264 (Constrained Baseline), yuv420p, 640x480, 3102 kb/s, 29.99 fps, 90k tbr, 90k tbn, 180k tbc
    
Audio: aac, 48000 Hz, stereo, s16, 93 kb/s

    3)

    ffmpeg -i 3.3gp
    
Video: h263, yuv420p, 1408x1152 [PAR 12:11 DAR 4:3], 2920 kb/s, 15 fps, 15 tbr, 15360 tbn, 29.97 tbc
    
Audio: amrnb, 8000 Hz, 1 channels, flt, 12 kb/s

    4)

    ffmpeg -i 4.3gp
    
Video: h264 (High), yuv420p, 352x288 [PAR 12:11 DAR 4:3], 216 kb/s, 24 fps, 24 tbr, 24 tbn, 48 tbc

    Audio : aac, 44100 Hz, stereo, s16, 92 kb/s

    So I am converting them to mpegts using following commands

    ./ffmpeg -i 1.mp4 -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 1.ts
    
./ffmpeg -i 2.mp4 -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 2.ts
    
./ffmpeg -i 3.3gp -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 3.ts
    
./ffmpeg -i 4.3gp -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 4.ts

    then concatenating the .ts files into f.ts and then creating a final .mp4 file from it using

    cat 1.ts 2.ts 3.ts 4.ts > f.ts
    
./ffmpeg -i f.ts -c copy -bsf:a aac_adtstoasc output.mp4

    But my f.ts also doesnt seem to play correctly in VLC on linux, it plays first 2 mp4’s video + audio and it plays last .3gp’s audio only.(Same for output.mp4 too) Could you please help me in figuring out what am I missing ?

    Thanks in advance

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