after merging the video and audio files output file only get half size of the original video file.
@echo off
mkdir "Output_Files"
for %%a in (*.mp4) do (
ffmpeg -i "%%a" -i "%%~na.m4a" -map 0:v:0 -map 1:a:0 -c copy "Output_Files%%~na.mp4"
)
pause
ffmpeg version 2026-05-21-git-0857141823-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers
built with gcc 16.1.0 (Rev2, Built by MSYS2 project)
configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-cairo --enable-fontconfig --enable-iconv --enable-gnutls --enable-lcms2 --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-libdvdnav --enable-libdvdread --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libopenjpeg --enable-libquirc --enable-libuavs3d --enable-libxevd --enable-libzvbi --enable-liboapv --enable-libqrencode --enable-librav1e --enable-libsvtav1 --enable-libvvenc --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxeve --enable-libxvid --enable-libaom --enable-libjxl --enable-libsvtjpegxs --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-openal --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-liblc3 --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint --enable-whisper
libavutil 60. 31.100 / 60. 31.100
libavcodec 62. 34.100 / 62. 34.100
libavformat 62. 18.100 / 62. 18.100
libavdevice 62. 4.100 / 62. 4.100
libavfilter 11. 17.100 / 11. 17.100
libswscale 9. 7.100 / 9. 7.100
libswresample 6. 4.100 / 6. 4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '【珠江台】夜倾情2016合集【粤语中字】(P22).mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41iso5
encoder : Lavf59.27.100
description : Bilibili VXCode Swarm Transcoder v1.3.17
Duration: 00:29:30.18, start: 0.179000, bitrate: 162 kb/s
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 480x360 [SAR 1:1 DAR 4:3], 923 kb/s, 15 fps, 15 tbr, 16k tbn, start 0.179000 (default)
Metadata:
handler_name : Bento4 Video Handler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '【珠江台】夜倾情2016合集【粤语中字】(P22).m4a':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41iso5
encoder : Lavf59.27.100
description : Bilibili VXCode Swarm Transcoder v1.3.17
Duration: 00:29:30.15, start: 0.000000, bitrate: 65 kb/s
Stream #1:0[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 65 kb/s (default)
Metadata:
handler_name : Bento4 Sound Handler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #1:0 -> #0:1 (copy)
Output #0, mp4, to 'Output_Files【珠江台】夜倾情2016合集【粤语中字】(P22).mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41iso5
description : Bilibili VXCode Swarm Transcoder v1.3.17
encoder : Lavf62.18.100
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 480x360 [SAR 1:1 DAR 4:3], q=2-31, 923 kb/s, 15 fps, 15 tbr, 16k tbn (default)
Metadata:
handler_name : Bento4 Video Handler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 65 kb/s (default)
Metadata:
handler_name : Bento4 Sound Handler
Press [q] to stop, [?] for help
[h264 @ 0000020e92c70000] Invalid NAL unit size (314254598 > 6385).
[h264 @ 0000020e92c70000] missing picture in access unit with size 6389
[h264 @ 0000020e92c70000] Invalid NAL unit size (288526104 > 2408).
[h264 @ 0000020e92c70000] missing picture in access unit with size 2412
[h264 @ 0000020e92c70000] Invalid NAL unit size (-596616027 > 999).
[h264 @ 0000020e92c70000] missing picture in access unit with size 1003
[h264 @ 0000020e92c70000] Invalid NAL unit size (-908716415 > 506).
[h264 @ 0000020e92c70000] missing picture in access unit with size 510
[h264 @ 0000020e92c70000] Invalid NAL unit size (4035886 > 462).
[h264 @ 0000020e92c70000] missing picture in access unit with size 466
[h264 @ 0000020e92c70000] Invalid NAL unit size (1243982494 > 1175).
[h264 @ 0000020e92c70000] missing picture in access unit with size 1179
[h264 @ 0000020e92c70000] Invalid NAL unit size (1735481119 > 437).
[h264 @ 0000020e92c70000] missing picture in access unit with size 441
[h264 @ 0000020e92c70000] Invalid NAL unit size (2051958947 > 614).
[h264 @ 0000020e92c70000] missing picture in access unit with size 618
[h264 @ 0000020e92c70000] Invalid NAL unit size (2080973440 > 6127).
[h264 @ 0000020e92c70000] missing picture in access unit with size 6131
[h264 @ 0000020e92c70000] Invalid NAL unit size (-2142327796 > 2252).
[h264 @ 0000020e92c70000] missing picture in access unit with size 2256
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1449590271 > 959).
[h264 @ 0000020e92c70000] missing picture in access unit with size 963
[h264 @ 0000020e92c70000] Invalid NAL unit size (253579972 > 356).
[h264 @ 0000020e92c70000] missing picture in access unit with size 360
[h264 @ 0000020e92c70000] Invalid NAL unit size (1110301800 > 363).
[h264 @ 0000020e92c70000] missing picture in access unit with size 367
[h264 @ 0000020e92c70000] Invalid NAL unit size (1564453288 > 1214).
[h264 @ 0000020e92c70000] missing picture in access unit with size 1218
[h264 @ 0000020e92c70000] Invalid NAL unit size (-417330385 > 627).
[h264 @ 0000020e92c70000] missing picture in access unit with size 631
[h264 @ 0000020e92c70000] Invalid NAL unit size (-348005604 > 379).
[h264 @ 0000020e92c70000] missing picture in access unit with size 383
[h264 @ 0000020e92c70000] Invalid NAL unit size (159303022 > 6584).
[h264 @ 0000020e92c70000] missing picture in access unit with size 6588
[h264 @ 0000020e92c70000] Invalid NAL unit size (1786479369 > 2718).
[h264 @ 0000020e92c70000] missing picture in access unit with size 2722
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1615957761 > 858).
[h264 @ 0000020e92c70000] missing picture in access unit with size 862
[h264 @ 0000020e92c70000] Invalid NAL unit size (84090739 > 290).
[h264 @ 0000020e92c70000] missing picture in access unit with size 294
[h264 @ 0000020e92c70000] Invalid NAL unit size (-851760970 > 446).
[h264 @ 0000020e92c70000] missing picture in access unit with size 450
[h264 @ 0000020e92c70000] Invalid NAL unit size (2114152962 > 619).
[h264 @ 0000020e92c70000] missing picture in access unit with size 623
[h264 @ 0000020e92c70000] Invalid NAL unit size (621487811 > 365).
[h264 @ 0000020e92c70000] missing picture in access unit with size 369
[h264 @ 0000020e92c70000] Invalid NAL unit size (-2082399180 > 148).
[h264 @ 0000020e92c70000] missing picture in access unit with size 152
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1335870322 > 3667).
[h264 @ 0000020e92c70000] missing picture in access unit with size 3671
[h264 @ 0000020e92c70000] Invalid NAL unit size (-725575777 > 794).
[h264 @ 0000020e92c70000] missing picture in access unit with size 798
[h264 @ 0000020e92c70000] Invalid NAL unit size (1563913225 > 386).
[h264 @ 0000020e92c70000] missing picture in access unit with size 390
[h264 @ 0000020e92c70000] Invalid NAL unit size (104524166 > 174).
[h264 @ 0000020e92c70000] missing picture in access unit with size 178
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1832303166 > 120).
[h264 @ 0000020e92c70000] missing picture in access unit with size 124
[h264 @ 0000020e92c70000] Invalid NAL unit size (744867826 > 271).
[h264 @ 0000020e92c70000] missing picture in access unit with size 275
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1938757397 > 145).
[h264 @ 0000020e92c70000] missing picture in access unit with size 149
[h264 @ 0000020e92c70000] Invalid NAL unit size (1926361588 > 49).
[h264 @ 0000020e92c70000] missing picture in access unit with size 53
[h264 @ 0000020e92c70000] Invalid NAL unit size (-68973419 > 3687).
[h264 @ 0000020e92c70000] missing picture in access unit with size 3691
[h264 @ 0000020e92c70000] Invalid NAL unit size (-719699771 > 437).
[h264 @ 0000020e92c70000] missing picture in access unit with size 441
[h264 @ 0000020e92c70000] Invalid NAL unit size (-399073370 > 107).
[h264 @ 0000020e92c70000] missing picture in access unit with size 111
[h264 @ 0000020e92c70000] Invalid NAL unit size (-980120013 > 53).
[h264 @ 0000020e92c70000] missing picture in access unit with size 57
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1226507507 > 90).
[h264 @ 0000020e92c70000] missing picture in access unit with size 94
[h264 @ 0000020e92c70000] Invalid NAL unit size (19094337 > 439).
[h264 @ 0000020e92c70000] missing picture in access unit with size 443
[h264 @ 0000020e92c70000] Invalid NAL unit size (1741100965 > 111).
[h264 @ 0000020e92c70000] missing picture in access unit with size 115
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1603089438 > 194).
[h264 @ 0000020e92c70000] missing picture in access unit with size 198
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1165964212 > 3348).
[h264 @ 0000020e92c70000] missing picture in access unit with size 3352
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1790705839 > 1775).
[h264 @ 0000020e92c70000] missing picture in access unit with size 1779
[h264 @ 0000020e92c70000] Invalid NAL unit size (455294222 > 905).
[h264 @ 0000020e92c70000] missing picture in access unit with size 909
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1041272059 > 461).
[h264 @ 0000020e92c70000] missing picture in access unit with size 465
[h264 @ 0000020e92c70000] Invalid NAL unit size (1193962076 > 567).
[h264 @ 0000020e92c70000] missing picture in access unit with size 571
[h264 @ 0000020e92c70000] Invalid NAL unit size (-328338129 > 805).
[h264 @ 0000020e92c70000] missing picture in access unit with size 809
[h264 @ 0000020e92c70000] Invalid NAL unit size (1335369138 > 331).
[h264 @ 0000020e92c70000] missing picture in access unit with size 335
[h264 @ 0000020e92c70000] Invalid NAL unit size (380992915 > 476).
[h264 @ 0000020e92c70000] missing picture in access unit with size 480
[h264 @ 0000020e92c70000] Invalid NAL unit size (890856934 > 4458).
[h264 @ 0000020e92c70000] missing picture in access unit with size 4462
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1209845677 > 2257).
[h264 @ 0000020e92c70000] missing picture in access unit with size 2261
[h264 @ 0000020e92c70000] Invalid NAL unit size (1867231781 > 1108).
[h264 @ 0000020e92c70000] missing picture in access unit with size 1112
[h264 @ 0000020e92c70000] Invalid NAL unit size (-592099684 > 610).
[h264 @ 0000020e92c70000] missing picture in access unit with size 614
[h264 @ 0000020e92c70000] Invalid NAL unit size (1704536792 > 445).
[h264 @ 0000020e92c70000] missing picture in access unit with size 449
[h264 @ 0000020e92c70000] Invalid NAL unit size (476303377 > 999).
[h264 @ 0000020e92c70000] missing picture in access unit with size 1003
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1664359742 > 446).
[h264 @ 0000020e92c70000] missing picture in access unit with size 450
[h264 @ 0000020e92c70000] Invalid NAL unit size (-20908849 > 447).
[h264 @ 0000020e92c70000] missing picture in access unit with size 451
[h264 @ 0000020e92c70000] Invalid NAL unit size (1773170545 > 5416).
[h264 @ 0000020e92c70000] missing picture in access unit with size 5420
[h264 @ 0000020e92c70000] Invalid NAL unit size (1571766700 > 1494).
[h264 @ 0000020e92c70000] missing picture in access unit with size 1498
[h264 @ 0000020e92c70000] Invalid NAL unit size (928829194 > 974).
[h264 @ 0000020e92c70000] missing picture in access unit with size 978
[h264 @ 0000020e92c70000] Invalid NAL unit size (-73962209 > 480).
[h264 @ 0000020e92c70000] missing picture in access unit with size 484
[h264 @ 0000020e92c70000] Invalid NAL unit size (-515996446 > 327).
[h264 @ 0000020e92c70000] missing picture in access unit with size 331
[h264 @ 0000020e92c70000] Invalid NAL unit size (310974686 > 565).
[h264 @ 0000020e92c70000] missing picture in access unit with size 569
[h264 @ 0000020e92c70000] Invalid NAL unit size (-2081443294 > 318).
[h264 @ 0000020e92c70000] missing picture in access unit with size 322
[h264 @ 0000020e92c70000] Invalid NAL unit size (1723713189 > 218).
[h264 @ 0000020e92c70000] missing picture in access unit with size 222
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1804900832 > 2638).
[h264 @ 0000020e92c70000] missing picture in access unit with size 2642
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1867047709 > 865).
[h264 @ 0000020e92c70000] missing picture in access unit with size 869
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1422387358 > 267).
[h264 @ 0000020e92c70000] missing picture in access unit with size 271
[h264 @ 0000020e92c70000] Invalid NAL unit size (-2087826604 > 190).
[h264 @ 0000020e92c70000] missing picture in access unit with size 194
[h264 @ 0000020e92c70000] Invalid NAL unit size (837639188 > 123).
[h264 @ 0000020e92c70000] missing picture in access unit with size 127
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1394097468 > 272).
[h264 @ 0000020e92c70000] missing picture in access unit with size 276
[h264 @ 0000020e92c70000] Invalid NAL unit size (-1817022354 > 126).
[h264 @ 0000020e92c70000] missing picture in access unit with size 130
[h264 @ 0000020e92c70000] Invalid NAL unit size (1326627301 > 240).
[h264 @ 0000020e92c70000] missing picture in access unit with size 244
[h264 @ 0000020e92c70000] Invalid NAL unit size (437021827 > 2392).
[h264 @ 0000020e92c70000] missing picture in access unit with size 2396
[h264 @ 0000020e92c70000] Invalid NAL unit size (-114169564 > 614).
[h264 @ 0000020e92c70000] missing picture in access unit with size 618
[out#0/mp4 @ 0000020e90bca8c0] video:3901KiB audio:13829KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 2.053651%
frame= 2325 fps=0.0 q=-1.0 Lsize= 18094KiB time=00:29:30.14 bitrate= 83.7kbits/s speed=3.9e+03x elapsed=0:00:00.45
請按任意鍵繼續 . . .
