[FFmpeg-user] libcamera_android build fix?
diff --git a/libavdevice/android_camera.c b/libavdevice/android_camera.c index 602b59047d..c981985f10 100644 --- a/libavdevice/android_camera.c +++ b/libavdevice/android_camera.c @@ -648,8 +648,8 @@ static int add_display_matrix(AVFormatContext *avctx, AVStream *st) av_display_matrix_flip(display_matrix, 1, 0); } -side_data = av_packet_side_data_new(>codecpar->side_data, ->codecpar->nb_side_data, +side_data = av_packet_side_data_new(>codecpar->coded_side_data, + >codecpar->nb_coded_side_data, AV_PKT_DATA_DISPLAYMATRIX, sizeof(display_matrix), 0); something like this. but it still does not work from console configure: ./configure --enable-jni --enable-mediacodec --enable-neon --target-os=android --disable-outdevs --disable-indev=xcbgrab run: ./ffmpeg -pixel_format nv12 -loglevel trace -f android_camera -camera_index 1 -input_queue_size 5 -video_size 1280x720 -i 0:0 -c:v libx264 -g 30 -b:v 980k -r 30 -s 1280x720 -b:a 28k 11test.mp4 it just sits here doing nothing, I guess waiting for application window? [android_camera @ 0xb471aebc64d0] Android camera capture session is active. I found similar question at https://www.mail-archive.com/ffmpeg-user@ffmpeg.org/msg21783.html and this explanation of camera api: https://www.sisik.eu/blog/android/ndk/camera ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] Decode ac3 from multichannel USB input
Hi, I have a RME Digiface USB as input to my Mac. This has 32 SPDIF input channels, of which the first two have an ac3 signal and the others are not used. I have been trying to isolate and decode one of the ac3 channels to its six separate PCM channels but without success. For example, as one of the many attempts, I tried: ffmpeg -acodec ac3 -f avfoundation -capture_raw_data true -i :1 \ -map_channel 0.0.0, \ -af 'pan=5.1|c0=c0|c1=-|c2=FC|c3=LFE|c4=BL|c5=BR' \ output.wav Can someone help me with this? - Fred ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] MP4-Video does not play audio on Android 8; audio stream size tagged wrong
Am 25.10.23 um 06:50 schrieb Classic SSG Enjoyer: Use Opus. Opus delievers better audio quality than AAC/Vorbis On Tue, 24 Oct, 2023, 11:01 pm Ferdi Scholten, wrote: Hi, Vorbis audio is officially not supported by the mp4 container specifications. Matroska does not have this problem as it supports almost all known codecs. These are the audio codecs that are in the mp4 specifications: AAC, ALS, SLS, MP3, MP2, MP1, CELP, HVXC, TTSI, SAOL, Apple Lossless, FLAC, Opus Others can be muxed in, but most players will not support playing those. Much thanks for this valuable information. Because I want to add several audio streams to a MP4 video, I'm looking for an audio codec, with optimal compression. As AAC in my context needs 128 kb/s, but Vorbis only 90 kb/s, I thought, it was a good choice. Which audio codec you would suggest, which has a wide range of compatibility, except AAC? Maybe Opus? For the video I want to use HEVC. Is there a possibility to encode AAC_HE with FFmpeg and would it make sense? -Ulf For good compression and good quality you should use Opus, it delivers (much) better audio quality than any variant of AAC let alone Vorbis for the same bitrate. when you don't specify a bitrate, libopus uses 95 kb/s as default for stereo audio. -Ferdi Thanks to Ferdi and Classic. Yes, Opus plays well on Android and iPhone. -Ulf ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] ffmpeg git and makeinfo 7.1 error?
I am trying to build new ffmpeg on my aarch64 termux installation. pulled git long time ago, now tried to integrate libxcam filter (without libxcam installed for now) but I think I run into unrelated build error: makeinfo: error parsing ./doc/t2h.pm: Undefined subroutine ::Config::set_from_init_file called at ./doc/t2h.pm line 24. using makeinfo --version texi2any (GNU texinfo) 7.1 as packaged by termux. configure line was ./configure --enable-jni --enable-mediacodec --enable-neon --target-os=android --disable-devices git log set at base a4877f1ec11e0327684eda37b15bc1ccb16f9ace and just-compiled (with "make ffmpeg" after docs build err) ffmpeg says: ~/ffmpeg $ ./ffmpeg -h ffmpeg version N-112509-g265b40e489 Copyright (c) 2000-2023 the FFmpeg developers built with clang version 17.0.3 configuration: --enable-jni --enable-mediacodec --enable-neon --target-os=android --disable-devices libavutil 58. 27.100 / 58. 27.100 libavcodec 60. 30.102 / 60. 30.102 libavformat60. 15.100 / 60. 15.100 libavdevice60. 2.101 / 60. 2.101 libavfilter 9. 11.100 / 9. 11.100 libswscale 7. 4.100 / 7. 4.100 libswresample 4. 11.100 / 4. 11.100 libxcam filter at patchwork: https://patchwork.ffmpeg.org/project/ffmpeg/patch/20200731145710.114479-1-wei.z...@intel.com/#56952 I just added const keyword to libavfilter/allfilters.c change, like in other cases ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] MKV to MP4
I'm trying to remux MKV as MP4. In the process, I want to remove the rounding errors that were introduced by MKV so that the video is 24/1.001fps CFR once again with proper PTSs & DTSs and 1/9 time base. When I do that, audio & video are out of sync. Does anyone know how to do this? I'd be really grateful. Regards -- Mark. PS: Since I wrote this I may have stumbled on a partial answer. I'd like your experiences with that partial answer. The partial answer is to add only this bit stream filter: -bsf:v setts=time_base=1/9 and to NOT add either :pts=... or :dts=... As I wrote, I stumbled on it through a fortuitous mistake. It seems to work, even for videos that completely lack PTSs & DTSs. Comments? Please. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
