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Android-FFmpeg adding subtitle to mp4 video does not work
7 septembre 2022, par ebdaa appI am trying to add srt file to a mp4 video using android mobile-ffmpeg , the code works with no error but the generated video does not contain the subtitle


here is the code :


String cmd = "-i " + videoPath + " -vf subtitles=\"" + subtitlePath + ":force_style='Alignment=10,Fontsize=18'\" " + OutputVideoPath;
 FFmpeg.executeAsync(cmd, new ExecuteCallback() {
 @Override
 public void apply(final long executionId, final int returnCode) {
 if (returnCode == RETURN_CODE_SUCCESS) {
 } else {
 
 }
 }
 });


here are the logs


I/mobile-ffmpeg: ffmpeg version v4.4-dev-416
 Copyright (c) 2000-2020 the FFmpeg developers
I/mobile-ffmpeg: built with Android (6454773 based on r365631c2) clang version 9.0.8 (https://android.googlesource.com/toolchain/llvm-project 98c855489587874b2a325e7a516b99d838599c6f) (based on LLVM 9.0.8svn)
 configuration: --cross-prefix=arm-linux-androideabi- --sysroot=/files/android-sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm/neon/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=armv7-a --cpu=armv7-a --cc=armv7a-linux-androideabi24-clang --cxx=armv7a-linux-androideabi24-clang++ --extra-libs='-L/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm/neon/cpu-features/lib -lndk_compat' --target-os=android --enable-neon --enable-asm --enable-inline-asm --build-suffix=_neon --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --enable-shared --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-openssl --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-static --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gmp --enable-gnutls --enable-libmp3lame --enable-libass --enable-iconv --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libxml2 --enable-libopencore-amrnb --enable-libshine --enable-libspeex --enable-libwavpack --enable-libkvazaar --enable-libilbc --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libaom --enable-libtwolame --disable-sdl2 --enable-libvo-amrwbenc --enable-zlib --enable-mediacodec
I/mobile-ffmpeg: libavutil 56. 55.100 / 56. 55.100
 libavcodec 58. 96.100 / 58. 96.100
I/mobile-ffmpeg: libavformat 58. 48.100 / 58. 48.100
 libavdevice 58. 11.101 / 58. 11.101
 libavfilter 7. 87.100 / 7. 87.100
 libswscale 5. 8.100 / 5. 8.100
I/mobile-ffmpeg: libswresample 3. 8.100 / 3. 8.100
I/mobile-ffmpeg: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Download/7b85de4d-6af2-4eea-be9d-0d13c7f7819f/001001.mp4':
 Metadata:
 major_brand : 
I/mobile-ffmpeg: isom
 minor_version : 
I/mobile-ffmpeg: 512
 compatible_brands: 
I/mobile-ffmpeg: isomiso2mp41
I/mobile-ffmpeg: encoder : 
 Lavf58.48.100
I/mobile-ffmpeg: Duration: 
 00:00:29.60
 , start: 
I/mobile-ffmpeg: 0.000000
 , bitrate: 
 466 kb/s
I/mobile-ffmpeg: Stream #0:0
 (und)
I/mobile-ffmpeg: : Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 640x480 [SAR 1:2 DAR 2:3], 336 kb/s
 , 
 5 fps, 
I/mobile-ffmpeg: 5 tbr, 
 10240 tbn, 
 5 tbc
I/mobile-ffmpeg: (default)
I/mobile-ffmpeg: Metadata:
 handler_name : 
 VideoHandler
I/mobile-ffmpeg: Stream #0:1
I/mobile-ffmpeg: (und)
 : Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s
 (default)
I/mobile-ffmpeg: Metadata:
I/mobile-ffmpeg: handler_name : 
 SoundHandler
W/mobile-ffmpeg: Codec AVOption preset (Configuration preset) specified for output file #0 (/storage/emulated/0/Download/QuranYaser/7b85de4d-6af2-4eea-be9d-0d13c7f7819f/001001_sub.mp4) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
I/mobile-ffmpeg: Stream mapping:
I/mobile-ffmpeg: Stream #0:0 -> #0:0
I/mobile-ffmpeg: (mpeg4 (native) -> mpeg4 (native))
I/mobile-ffmpeg: Stream #0:1 -> #0:1
 (aac (native) -> aac (native))
I/mobile-ffmpeg: Press [q] to stop, [?] for help
 frame= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbits/s speed=N/A 
I/mobile-ffmpeg: [Parsed_subtitles_0 @ 0xf35ee820] Shaper: FriBidi 1.0.9 (SIMPLE)
I/mobile-ffmpeg: [Parsed_subtitles_0 @ 0xf35ee820] 
W/mobile-ffmpeg: [Parsed_subtitles_0 @ 0xf35ee820] No usable fontconfig configuration file found, using fallback.
 [Parsed_subtitles_0 @ 0xf35ee820] 
I/mobile-ffmpeg: [Parsed_subtitles_0 @ 0xf35ee820] Using font provider fontconfig
 [Parsed_subtitles_0 @ 0xf35ee820] 
W/mobile-ffmpeg: [graph 0 input from stream 0:0 @ 0xf35ee880] sws_param option is deprecated and ignored
I/mobile-ffmpeg: Output #0, mp4, to '/storage/emulated/0/Download/QuranYaser/7b85de4d-6af2-4eea-be9d-0d13c7f7819f/001001_sub.mp4':
I/mobile-ffmpeg: Metadata:
 major_brand : 
 isom
I/mobile-ffmpeg: minor_version : 
 512
I/mobile-ffmpeg: compatible_brands: 
I/mobile-ffmpeg: isomiso2mp41
 encoder : 
I/mobile-ffmpeg: Lavf58.48.100
 Stream #0:0
I/mobile-ffmpeg: (und)
 : Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 640x480 [SAR 1:2 DAR 2:3], q=2-31, 200 kb/s
 , 
I/mobile-ffmpeg: 5 fps, 
I/mobile-ffmpeg: 10240 tbn, 
 5 tbc
I/mobile-ffmpeg: (default)
 Metadata:
I/mobile-ffmpeg: handler_name : 
 VideoHandler
 encoder : 
I/mobile-ffmpeg: Lavc58.96.100 mpeg4
 Side data:
I/mobile-ffmpeg: 
 cpb: 
 bitrate max/min/avg: 0/0/200000 buffer size: 0 
 vbv_delay: N/A
I/mobile-ffmpeg: Stream #0:1
 (und)
I/mobile-ffmpeg: : Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s
 (default)
 Metadata:
I/mobile-ffmpeg: handler_name : 
 SoundHandler
I/mobile-ffmpeg: encoder : 
 Lavc58.96.100 aac
I/mobile-ffmpeg: frame= 11 fps=0.0 q=2.0 size= 0kB time=00:00:03.59 bitrate= 0.1kbits/s speed=7.16x 
I/mobile-ffmpeg: frame= 30 fps= 30 q=2.0 size= 256kB time=00:00:07.47 bitrate= 280.5kbits/s speed=7.44x 
I/mobile-ffmpeg: frame= 50 fps= 33 q=2.0 size= 512kB time=00:00:11.54 bitrate= 363.5kbits/s speed=7.67x 
I/mobile-ffmpeg: frame= 71 fps= 35 q=2.0 size= 768kB time=00:00:15.71 bitrate= 400.2kbits/s speed=7.83x 
I/mobile-ffmpeg: frame= 92 fps= 37 q=2.0 size= 1024kB time=00:00:19.78 bitrate= 424.0kbits/s speed=7.88x 
I/mobile-ffmpeg: frame= 110 fps= 36 q=2.0 size= 1280kB time=00:00:23.38 bitrate= 448.5kbits/s speed=7.75x 
I/mobile-ffmpeg: frame= 128 fps= 36 q=2.0 size= 1280kB time=00:00:27.12 bitrate= 386.6kbits/s speed=7.71x 
I/mobile-ffmpeg: frame= 148 fps= 38 q=8.4 Lsize= 1697kB time=00:00:29.40 bitrate= 472.9kbits/s speed=7.56x 
 video:1225kB audio:462kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 
I/mobile-ffmpeg: 0.559634%
I/mobile-ffmpeg: [aac @ 0xbe48c800] Qavg: 163.999


here is a sample of srt file I am trying to merge :


1
00:00:00,000 --> 00:00:03,326
 Text 1

2
00:00:03,326 --> 00:00:09,962
 Text 2

3
00:00:09,962 --> 00:00:16,160
 Text 3

4
00:00:16,160 --> 00:00:22,223
 Text 4


any idea why the generated video does not contain the subtitle ?


Update


Based on below comment , I changed my code to use the latest ffmpeg-kit version , here is the new code


String cmd = "-i " + videoPath + " -vf subtitles=\"" + subtitlePAth + ":force_style='Alignment=10,Fontsize=18\" " + 
 outputVideoPath;

 FFmpegKit.executeAsync(cmd, new FFmpegSessionCompleteCallback() {

 @Override
 public void apply(FFmpegSession session) {

 }
 }, new LogCallback() {

 @Override
 public void apply(com.arthenica.ffmpegkit.Log log) {


 }
 }, new StatisticsCallback() {

 @Override
 public void apply(Statistics statistics) { 

 }
 });`


and here is the updated log


ffmpeg version v4.5-dev-3393-g30322ebe3c Copyright (c) 2000-2021 the FFmpeg developers
 built with Android (7155654, based on r399163b1) clang version 11.0.5 (https://android.googlesource.com/toolchain/llvm-project 87f1315dfbea7c137aa2e6d362dbb457e388158d)
 configuration: --cross-prefix=arm-linux-androideabi- --sysroot=/files/android-sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/storage/light/projects/ffmpeg-kit/prebuilt/android-arm-neon/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=armv7-a --cpu=armv7-a --target-os=android --enable-neon --enable-asm --enable-inline-asm --build-suffix=_neon --ar=arm-linux-androideabi-ar --cc=armv7a-linux-androideabi24-clang --cxx=armv7a-linux-androideabi24-clang++ --ranlib=arm-linux-androideabi-ranlib --strip=arm-linux-androideabi-strip --nm=arm-linux-androideabi-nm --extra-libs='-L/storage/light/projects/ffmpeg-kit/prebuilt/android-arm-neon/cpu-features/lib -lndk_compat' --disable-autodetect --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --disable-static --enable-shared --enable-pthreads --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gmp --enable-gnutls --enable-libmp3lame --enable-libass --enable-iconv --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libxml2 --enable-libopencore-amrnb --enable-libshine --enable-libspeex --enable-libdav1d --enable-libkvazaar --enable-libilbc --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libtwolame --disable-sdl2 --enable-libvo-amrwbenc --enable-libzimg --disable-openssl --enable-zlib --enable-mediacodec
 libavutil 57. 13.100 / 57. 13.100
 libavcodec 59. 15.102 / 59. 15.102
 libavformat 59. 10.100 / 59. 10.100
 libavdevice 59. 1.100 / 59. 1.100
 libavfilter 8. 21.100 / 8. 21.100
 libswscale 6. 1.102 / 6. 1.102
 libswresample 4. 0.100 / 4. 0.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Download/7b85de4d-6af2-4eea-be9d-0d13c7f7819f/001001.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2mp41
 encoder : Lavf59.10.100
 Duration: 00:00:29.60, start: 0.000000, bitrate: 467 kb/s
 Stream #0:0[0x1](und): Video: mpeg4 (mp4v / 0x7634706D), yuv420p(tv, bt470bg/bt709/bt709), 640x480 [SAR 1:2 DAR 2:3], 336 kb/s, 5 fps, 5 tbr, 10240 tbn (default)
 Metadata:
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 Stream #0:1[0x2](und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 129 kb/s (default)
 Metadata:
 handler_name : SoundHandler
 vendor_id : [0][0][0][0]
 [mpeg4 @ 0xbacc1080] The "sub_text_format" option is deprecated: Deprecated, does nothing
 [aac @ 0xbacc1400] The "sub_text_format" option is deprecated: Deprecated, does nothing
 Stream mapping:
 Stream #0:0 -> #0:0 (mpeg4 (native) -> mpeg4 (native))
 Stream #0:1 -> #0:1 (aac (native) -> aac (native))
 Press [q] to stop, [?] for help
 [Parsed_subtitles_0 @ 0xf35141e0] libass API version: 0x1502000[Parsed_subtitles_0 @ 0xf35141e0] 
 [Parsed_subtitles_0 @ 0xf35141e0] libass source: commit: 0.15.2-0-gc967a5a3d9ec0d36af1148b3fdf2f307a21dd122[Parsed_subtitles_0 @ 0xf35141e0] 
 [Parsed_subtitles_0 @ 0xf35141e0] Shaper: FriBidi 1.0.11 (SIMPLE) HarfBuzz-ng 3.2.0 (COMPLEX)[Parsed_subtitles_0 @ 0xf35141e0] 
 [Parsed_subtitles_0 @ 0xf35141e0] No usable fontconfig configuration file found, using fallback.[Parsed_subtitles_0 @ 0xf35141e0] 
 [Parsed_subtitles_0 @ 0xf35141e0] Using font provider fontconfig[Parsed_subtitles_0 @ 0xf35141e0] 
 [Parsed_subtitles_0 @ 0xf35141e0] fontselect: failed to find any fallback with glyph 0x0 for font: (Arial, 400, 0)[Parsed_subtitles_0 @ 0xf35141e0] 
 Output #0, mp4, to '/storage/emulated/0/Download/7b85de4d-6af2-4eea-be9d-0d13c7f7819f/001001_sub5.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2mp41
 encoder : Lavf59.10.100
 Stream #0:0(und): Video: mpeg4 (mp4v / 0x7634706D), yuv420p(tv, bt470bg/bt709/bt709, progressive), 640x480 [SAR 1:2 DAR 2:3], q=2-31, 200 kb/s, 5 fps, 10240 tbn (default)
 Metadata:
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 encoder : Lavc59.15.102 mpeg4
 Side data:
 cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
 Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 handler_name : SoundHandler
 vendor_id : [0][0][0][0]
 encoder : Lavc59.15.102 aac
 frame= 1 fps=0.0 q=5.7 size= 0kB time=00:00:01.55 bitrate= 0.2kbits/s speed= 2.4x 
 frame= 10 fps=8.7 q=2.0 size= 0kB time=00:00:03.50 bitrate= 0.1kbits/s speed=3.04x 
 frame= 20 fps= 12 q=2.0 size= 0kB time=00:00:05.36 bitrate= 0.1kbits/s speed=3.24x 
 frame= 32 fps= 15 q=2.0 size= 256kB time=00:00:07.87 bitrate= 266.5kbits/s speed=3.65x 
 frame= 45 fps= 17 q=2.0 size= 256kB time=00:00:10.49 bitrate= 199.8kbits/s speed=3.95x 
 frame= 58 fps= 18 q=2.0 size= 512kB time=00:00:12.97 bitrate= 323.2kbits/s speed=4.11x 
 frame= 69 fps= 19 q=2.0 size= 768kB time=00:00:15.23 bitrate= 413.1kbits/s speed=4.16x 
 frame= 81 fps= 19 q=2.0 size= 768kB time=00:00:17.60 bitrate= 357.5kbits/s speed=4.23x 
 frame= 92 fps= 20 q=2.0 size= 1024kB time=00:00:19.85 bitrate= 422.6kbits/s speed=4.26x 
 frame= 102 fps= 20 q=2.0 size= 1024kB time=00:00:21.89 bitrate= 383.1kbits/s speed=4.24x 
 frame= 115 fps= 20 q=2.0 size= 1280kB time=00:00:24.40 bitrate= 429.7kbits/s speed=4.31x 
 frame= 126 fps= 20 q=2.0 size= 1280kB time=00:00:26.67 bitrate= 393.0kbits/s speed=4.32x 
 frame= 139 fps= 21 q=2.0 size= 1536kB time=00:00:29.28 bitrate= 429.8kbits/s speed=4.39x 
 frame= 148 fps= 22 q=8.4 Lsize= 1701kB time=00:00:29.40 bitrate= 473.9kbits/s speed=4.34x 
 video:1225kB audio:466kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.561835%
 [aac @ 0xbacc2200] Qavg: 482.514


-
No video steam played with the ffmpeg script from avi to mp4 on Centos 8.2/ffmpeg 8 [duplicate]
27 septembre 2020, par user27240The mp4 file that was transformed from the avi file with the script below running on Centos 8.2/ffmpeg gcc 8 does not play video stream and it only play audio on chrome/edge/firefox/opera and Windows10.
Could anyone please help me out ?


for i in /var/www/html/xxxxx/xxxxx/479.AVI; do ffmpeg -i "$i" -pix_fmt yuv420p -movflags +faststart -ss 0.03 "/var/www/html/xxxxx/xxxxx/$(basename "$i" .avi).mp4"; done

The log for the ffmpeg transform script :


peg -i "$i" -pix_fmt yuv420p -movflags +faststart -ss 0.03 "/var/www/html/xxxxx/xxxxx/$(basename "$i" .avi).mp4"; done
ffmpeg version N-99260-g6401a5d4b8 Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 8 (GCC)
 configuration: --disable-x86asm
 libavutil 56. 59.100 / 56. 59.100
 libavcodec 58.106.100 / 58.106.100
 libavformat 58. 58.100 / 58. 58.100
 libavdevice 58. 11.102 / 58. 11.102
 libavfilter 7. 87.100 / 7. 87.100
 libswscale 5. 8.100 / 5. 8.100
 libswresample 3. 8.100 / 3. 8.100
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, avi, from '/var/www/html/xxxxx/xxxxx/479.AVI':
 Metadata:
 creation_time : 1980-01-01 00:00:18
 encoder : CanonMVI06
 Duration: 00:00:04.63, start: 0.000000, bitrate: 15522 kb/s
 Stream #0:0: Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj422p(pc, bt470 bg/unknown/unknown), 640x480, 14916 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
 Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono, s16, 705 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (mjpeg (native) -> mpeg4 (native))
 Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[swscaler @ 0x37e3c80] deprecated pixel format used, make sure you did set range correctly
Output #0, mp4, to '/var/www/html/xxxxx/xxxxx/479.AVI.mp4':
 Metadata:
 encoder : Lavf58.58.100
 Stream #0:0: Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 640x480, q=2-31, 200 kb/s, 30 fps, 65521 tbn, 30 tbc
 Metadata:
 encoder : Lavc58.106.100 mpeg4
 Side data:
 cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
 Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 k b/s
 Metadata:
 encoder : Lavc58.106.100 aac
frame= 61 fps=0.0 q=24.8 size= 0kB time=00:00:02.90 bitrate= 0.1kbits/ frame= 126 fps=125 q=31.0 size= 256kB time=00:00:04.55 bitrate= 460.9kbits/ [mp4 @ 0x376e700] Starting second pass: moving the moov atom to the beginning of the file
frame= 138 fps=125 q=31.0 Lsize= 379kB time=00:00:04.62 bitrate= 671.2kbits /s speed=4.17x
video:335kB audio:38kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.401716%
[aac @ 0x377d2c0] Qavg: 2088.382


ffmpeg version :


ffmpeg version N-99260-g6401a5d4b8 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 8 (GCC)
configuration: --disable-x86asm
libavutil 56. 59.100 / 56. 59.100
libavcodec 58.106.100 / 58.106.100
libavformat 58. 58.100 / 58. 58.100
libavdevice 58. 11.102 / 58. 11.102
libavfilter 7. 87.100 / 7. 87.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100


CentOS version :

CentOS Linux release 8.2.2004 (Core)

Clinet OS :

Windows10

Browsers :

Chrome, Edge, Firefox, Opera

ffprobe -loglevel error :


[root@xxxxxxx xxxxxxx]# ffprobe -loglevel error -show_streams 479.AVI.mp4 
[STREAM]
index=0
codec_name=mpeg4
codec_long_name=MPEG-4 part 2
profile=Simple Profile
codec_type=video
codec_time_base=2184/65521
codec_tag_string=mp4v
codec_tag=0x7634706d
width=640
height=480
coded_width=640
coded_height=480
closed_captions=0
has_b_frames=0
sample_aspect_ratio=1:1
display_aspect_ratio=4:3
pix_fmt=yuv420p
level=1
color_range=unknown
color_space=unknown
color_transfer=unknown
color_primaries=unknown
chroma_location=left
field_order=unknown
timecode=N/A
refs=1
quarter_sample=false
divx_packed=false
id=N/A
r_frame_rate=65521/2184
avg_frame_rate=65521/2184
time_base=1/65521
start_pts=0
start_time=0.000000
duration_ts=301392
duration=4.599930
bit_rate=596840
max_bit_rate=596840
bits_per_raw_sample=N/A
nb_frames=138
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=1
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
TAG:language=und
TAG:handler_name=VideoHandler
[/STREAM]
[STREAM]
index=1
codec_name=aac
codec_long_name=AAC (Advanced Audio Coding)
profile=LC
codec_type=audio
codec_time_base=1/44100
codec_tag_string=mp4a
codec_tag=0x6134706d
sample_fmt=fltp
sample_rate=44100
channels=1
channel_layout=mono
bits_per_sample=0
id=N/A
r_frame_rate=0/0
avg_frame_rate=0/0
time_base=1/44100
start_pts=0
start_time=0.000000
duration_ts=202992
duration=4.602993
bit_rate=67677
max_bit_rate=69000
bits_per_raw_sample=N/A
nb_frames=200
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=1
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
TAG:language=und
TAG:handler_name=SoundHandler
[/STREAM]


-
How can I capture simple video input with audio from a capture device
17 décembre 2020, par Geoff SweetI'm using ffmpeg on Arch linux and trying to convert some old video to digital. The setup is pretty straightforward and if I connect to the capture device with VLC I get the video and audio just fine. So now I want to capture that with ffmpeg and write it to a file so I can edit it and clean it up. I'm only so-so familiar with ffmpeg and I've been digging through the man pages and here is where I am at.


This command captures perfect audio, but no video :


ffmpeg -f alsa -ac 2 -i front:CARD=Capture,DEV=0 out.mpeg


This command captures perfect video ;


ffmpeg -f video4linux2 -i /dev/video0 out.mpeg


captures the video signal great, but with no audio. So combining them together should give me :


ffmpeg -y -f alsa -ac 2 -i front:CARD=Capture,DEV=0 -f video4linux2 -i /dev/video0 out.mpeg


But that command kinda falls on it's face. I get the audio, but no video :


ffmpeg -y -f alsa -ac 2 -i front:CARD=Capture,DEV=0 -f video4linux2 -i /dev/video0 out.mpeg
ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 10.2.0 (GCC)
 configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-amf --enable-avisynth --enable-cuda-llvm --enable-lto --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librav1e --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-shared --enable-version3
 libavutil 56. 51.100 / 56. 51.100
 libavcodec 58. 91.100 / 58. 91.100
 libavformat 58. 45.100 / 58. 45.100
 libavdevice 58. 10.100 / 58. 10.100
 libavfilter 7. 85.100 / 7. 85.100
 libswscale 5. 7.100 / 5. 7.100
 libswresample 3. 7.100 / 3. 7.100
 libpostproc 55. 7.100 / 55. 7.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, alsa, from 'front:CARD=Capture,DEV=0':
 Duration: N/A, start: 1608093176.894565, bitrate: 1536 kb/s
 Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
[video4linux2,v4l2 @ 0x56248fe0ab80] Dequeued v4l2 buffer contains corrupted data (0 bytes).
Input #1, video4linux2,v4l2, from '/dev/video0':
 Duration: N/A, start: 0.000000, bitrate: 995328 kb/s
 Stream #1:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 1920x1080, 995328 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
Stream mapping:
 Stream #1:0 -> #0:0 (rawvideo (native) -> mpeg1video (native))
 Stream #0:0 -> #0:1 (pcm_s16le (native) -> mp2 (native))
Press [q] to stop, [?] for help
[video4linux2,v4l2 @ 0x56248fe0ab80] Dequeued v4l2 buffer contains corrupted data (0 bytes).
 Last message repeated 30 times
[alsa @ 0x56248fdb3840] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
[mpeg @ 0x56248fe0dfc0] VBV buffer size not set, using default size of 230KB
If you want the mpeg file to be compliant to some specification
Like DVD, VCD or others, make sure you set the correct buffer size
Output #0, mpeg, to 'out.mpeg':
 Metadata:
 encoder : Lavf58.45.100
 Stream #0:0: Video: mpeg1video, yuv420p(progressive), 1920x1080, q=2-31, 200 kb/s, 30 fps, 90k tbn, 30 tbc
 Metadata:
 encoder : Lavc58.91.100 mpeg1video
 Side data:
 cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
 Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
 Metadata:
 encoder : Lavc58.91.100 mp2
frame= 2 fps=0.0 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=2.0 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=1.3 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=1.0 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.8 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.7 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.6 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.5 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.4 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.4 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.4 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.3 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.3 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.3 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.3 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.2 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.2 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.2 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.2 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.2 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.2 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.2 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.2 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.2 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.2 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.2 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/sframe= 2 fps=0.1 q=3.2 size= 0kB time=01:48:49.26 bitrate= 0.0kbits/s[video4linux2,v4l2 @ 0x56248fe0ab80] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=0 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=2020 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=4061 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=6102 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=8143 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=10184 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=12225 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=14266 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=16307 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=18348 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=20389 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=22430 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=24471 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=26512 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=28553 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=30594 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=32635 size=36451
[mpeg @ 0x56248fe0dfc0] buffer underflow st=0 bufi=34676 size=36451
frame= 2 fps=0.1 q=2.0 Lsize= 1470kB time=01:48:49.30 bitrate= 1.8kbits/s speed= 221x 
video:63kB audio:1388kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.314351%
Exiting normally, received signal 2.


what I would ideally like is just a fairly raw 2ch stereo "dump" of what comes through the capture card.


As always, I super appreciate any advice


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