Thanks for the suggestion, but the command leads to the same error, I already had:
Stream map '' matches no streams. To ignore this, add a trailing '?' to the map. Failed to set value '0:a' for option 'map': Invalid argument Regarding "you cannot STORE raw h264 video (without reencode) in mp4 container": If I omit the audio, then I can use "-map 0:0 -codec:v copy" and the result is a useable MP4 (without audio). But the audio must be somewhere in the file, otherwise the HQCAM converter tool wouldn't be able to access it. -----Ursprüngliche Nachricht----- Von: ffmpeg-user <ffmpeg-user-boun...@ffmpeg.org> Im Auftrag von BloodMan Gesendet: Montag, 14. April 2025 14:49 An: ffmpeg-user@ffmpeg.org Betreff: Re: [FFmpeg-user] Hidden audio in H264 - wrapped_avframe Hello, And IMO should not work. .h264 is video only stream in general. Does not contain audio so searching or encoding audio will not succeed. BUT: I do not work with wrapped_avframe, but you may try: ffmpeg -i file.h264 -hide_banner -loglevel warning -err_detect ignore_err -dn -sn -map 0:v -map 0:a -f fifo -pix_fmt yuv420p -c:v libx264 -preset veryfast -profile:v high -level 41 -crf 16 -tune film -c:a aac -b:a 160k -ac 2 -ar 48000 -shortest -y -f mp4 output.mp4 Why? you cannot STORE raw h264 video (without reencode) in mp4 container - so you should reencode first (just like audio). Hope it helps. W dniu 2025-04-14 o 13:57, Hans Schuell (GiraOne) pisze: [cut] > > ffmpeg -i file.h264 -hide_banner -loglevel warning -err_detect > ignore_err -dn -sn -map 0:0 -codec:v copy -map 0:1 -filter:a > aresample=osr=8000:ochl=mono -codec:a aac -b:a 64k -shortest file.mp4 > > it doesn't work. It leads to -- Pozdrawiam, blood...@gmail.com _______________________________________________ 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 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".
