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Note MP4 does not support PCM sound, you must create MOV in this case:

>ffmpeg.exe -r 30 -i recovered.h264 -i recovered.aac -bsf:a aac_adtstoasc -c:v copy -c:a copy recovered.mp4 To recreate the MP4/MOV file from the streams (recovered.h264 and recovered.aac). Step 3: Use any other utility (Yamb or ffmpeg for example) Probably you need to add a specific option (look at instructions from step 1). Note: Files 'video.hdr' and 'audio.hdr' must be exist. >recover_mp4.exe bad.mp4 recovered.h264 recovered.aac Step 2: Recover streams from the corrupted file, for example It will create files 'video.hdr' and 'audio.hdr' in the current directory and print instructions (ffmpeg options, etc.). Step 1: Use any good previous file with the same resolution and bitrate to generate the header files, for example ext use generic templates for any other camcorder or smartphone drim5 use DRIMeV HEVC/H.265 templates (Samsung NX1/NX500 camcorder) drim use DRIMeIII templates (Samsung NX1000 camcorder) ambarella use Ambarella templates (ignore GoPro4 specific data). gopro4 use Ambarella templates and detect GoPro4 specific data.

avcxmax ignore AVC NAL units (non IDR) with the size above than bytes avcidrmax ignore AVC NAL units (IDR) with the size above than bytes start read from position (ignore mdat atom) Supported audio formats: AAC, ADPCM (Intel), MP3, PCM (LE, BE, float), RAW Supported video formats: AVC/H.264, HEVC/H.265 You may got the unfinalized file in case of damaging camcorder during recording or such. This utility can recover video and audio streams from unfinalized MP4/MOV/3GP files without (or empty) header.