Audio 在流#1中找不到编解码器pcm#alaw的标记,当使用ffmpeg连接2个文件时,容器中当前不支持编解码器
我正在尝试连接两个文件,第一个文件包含音频和视频,而第二个文件仅包含视频。我使用以下Audio 在流#1中找不到编解码器pcm#alaw的标记,当使用ffmpeg连接2个文件时,容器中当前不支持编解码器,audio,video,ffmpeg,codec,Audio,Video,Ffmpeg,Codec,我正在尝试连接两个文件,第一个文件包含音频和视频,而第二个文件仅包含视频。我使用以下ffmpeg命令: ffmpeg_command = ["ffmpeg", "-f", "concat", "-safe", "0", "-i", "clips_to_join.txt", "-vcodec", "copy", "-acodec", "copy", output_file_path] # output_filename = ch0X-start_time-end_time p = subproce
ffmpeg
命令:
ffmpeg_command = ["ffmpeg", "-f", "concat", "-safe", "0", "-i", "clips_to_join.txt", "-vcodec", "copy", "-acodec", "copy", output_file_path] # output_filename = ch0X-start_time-end_time
p = subprocess.Popen(ffmpeg_command)
p.communicate()
但我得到了以下错误:
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Invalid UE golomb code
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1394700] Auto-inserting h264_mp4toannexb bitstream filter
Invalid UE golomb code
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, concat, from 'clips_to_join.txt':
Duration: N/A, start: 0.000000, bitrate: 5954 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 5894 kb/s, 14.06 fps, 30 tbr, 90k tbn, 180k tbc
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: pcm_alaw (alaw / 0x77616C61), 8000 Hz, 1 channels, s16, 64 kb/s
Metadata:
handler_name : SoundHandler
[mp4 @ 0x13b16e0] Codec for stream 0 does not use global headers but container format requires global headers
[mp4 @ 0x13b16e0] Codec for stream 1 does not use global headers but container format requires global headers
[mp4 @ 0x13b16e0] Could not find tag for codec pcm_alaw in stream #1, codec not currently supported in container
Output #0, mp4, to '/path/ch1-20171109-131750-131949-101000000000-padded.mp4':
Metadata:
encoder : Lavf56.40.101
Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1920x1080, q=2-31, 5894 kb/s, 14.06 fps, 30 tbr, 90k tbn, 90k tbc
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: pcm_alaw (alaw / 0x77616C61), 8000 Hz, mono, 64 kb/s
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
容器中当前不支持编解码器
ffmpeg
不支持MP4容器中的pcm\u alaw
。将音频编码为AAC,或使用不同的输出容器格式,如MOV或MKV
将音频编码到AAC
将音频编码到FLAC,无任何损失
或输出到MOV或MKV
copy
启用仅重新多路复用和避免重新编码(如复制和粘贴)的模式。我投票结束这个问题,因为它是关于通用计算硬件和软件的。文章作者可能能够获得有关超级用户的帮助。或者,查看video.stackexchange.com。有趣的是,旧版本的ffmpeg对此没有问题。我最近更新了几年前(2017年左右)的一个版本,之前它很好地转换为mp4,但在更新之后,我发现了这个错误。
ffmpeg -i input.mov -c:v copy -c:a aac output.mp4
ffmpeg -i input.mov -c:v copy -c:a flac -strict -2 output.mp4
ffmpeg -i input.mp4 -c copy output.mkv