많은 mp4 파일을 webm으로 변환하려고합니다. 그래서 다음 명령을 실행합니다. 나는 ffmpeg로 비슷한 명령을 시도했다.avconv mp4 to webm libvorbis 버퍼 오버플로
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
creation_time : 1970-01-01 00:00:00
encoder : Lavf52.32.0
Duration: 00:01:02.90, start: 0.000000, bitrate: 1649 kb/s
Stream #0.0(und): Video: mpeg4 (Simple Profile), yuv420p, 640x480 [PAR 4:3 DAR 16:9], 1492 kb/s, PAR 853:640 DAR 853:480, 23.94 fps, 30 tbr, 30 tbn, 30 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
Stream #0.1(und): Audio: aac, 44100 Hz, stereo, s16, 152 kb/s
Metadata:
creation_time : 1970-01-01 00:00:00
[buffer @ 0x1232600] w:640 h:480 pixfmt:yuv420p
[scale @ 0x123c300] w:640 h:480 fmt:yuv420p -> w:1280 h:720 fmt:yuv420p flags:0x4
[libvpx @ 0x1256d60] v1.0.0
Output #0, webm, to 'output.webm':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
creation_time : 1970-01-01 00:00:00
encoder : Lavf53.21.0
Stream #0.0(und): Video: libvpx, yuv420p, 1280x720 [PAR 2559:2560 DAR 853:480], q=11-51, pass 2, 3900 kb/s, 1k tbn, 30 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
Stream #0.1(und): Audio: libvorbis, 44100 Hz, stereo, s16, 152 kb/s
Metadata:
creation_time : 1970-01-01 00:00:00
Stream mapping:
Stream #0:0 -> #0:0 (mpeg4 -> libvpx)
Stream #0:1 -> #0:1 (aac -> libvorbis)
Press ctrl-c to stop encoding
[libvorbis @ 0x1221240] libvorbis: buffer overflow.Audio encoding failed
공지 좋은 오류 :에
avconv -i input.mp4 -threads 8 -s 1280x720 -pre libvpx-720p -b 3900k -pass 2 -acodec libvorbis -b:a 128k -ac 2 -f webm -y output/webm
결과. libvorbis의 버퍼 오버 플로우.
어떤 도움이 필요합니까? 대체 전환 명령?
UPDATE는
첫 번째 패스는 다음과 같습니다
avconv -i input.mp4 -threads 8 -s 1280x720 -pre libvpx-720p -b 3900k -pass 1 -an -f webm -y output.webm
감사합니다!